@conference {16388, title = {FISH ASSEMBLAGE VARIATION AT BOAT SEINE FISHING GROUNDS}, booktitle = {12TH INTERNATIONAL CONGRESS ON THE ZOOGEOGRAPHY AND ECOLOGY OF GREECE AND ADJACENT REGIONS}, year = {2012}, month = {18 {\textendash} 22 June}, publisher = {HELLENIC ZOOLOGICAL SOCIETY}, organization = {HELLENIC ZOOLOGICAL SOCIETY}, address = {Athens}, keywords = {boat, fish, fishing grounds, seine, variation, αλιεία, γριγρί, παραλλαγή, σκάφος, ψάρια}, author = {Lefkaditou, E. and Petrakis, G. and Kavadas, S. and Siapatis, A.} } @article {12763, title = {Reproductive cycle and fecundity of blue-mouth (Helicolenus dactylopterus, Delaroche, 1809) in the Eastern Mediterranean (Ionian Sea, Greece). }, journal = {Rapport et Proc{\'e}s-Verbaux des R{\'e}unions de la Commission Internationale pour l{\textquoteright}Exploration Scientifique de la Mer M{\'e}diterran{\'e}eRapport et Proc{\'e}s-Verbaux des R{\'e}unions de la Commission Internationale pour l{\textquoteright}Exploration Scientifique de la Mer M{\'e}diterran}, volume = {36}, year = {2001}, pages = {329}, keywords = {Pisces}, author = {Terrats, A. and Petrakis, G.} } @article {12764, title = {Feeding habits of Aspitrigla cuculus (L., 1758) (red gurnard), Lepidotrigla cavillone (Lac., 1802) (large scale gurnard) and Trigloporus lastoviza (Brunn., 1768) (rock gurnard) around Cyclades and Dodecanese Islands (E. Mediterranean)}, journal = {Mediterranean Marine ScienceMediterranean Marine Science}, volume = {1}, number = {1}, year = {2000}, pages = {91-104}, keywords = {Pisces}, author = {Terrats, A. and Petrakis, G. and Papaconstantinou, C.} } @article {12448, title = {Modelling and forecasting monthly fisheries catches: Comparison of regression, univariate and multivariate time series methods.}, journal = {Fisheries Research (Amsterdam)Fisheries Research (Amsterdam)}, volume = {29}, number = {1}, year = {1997}, pages = {55-95}, abstract = {In the present work, seven forecasting techniques were evaluated on the basis of their efficiency to model and provide accurate operational forecasts of the monthly commercial landings of 16 species (or groups of species) in the Hellenic marine waters. The development of operational forecasts was based on the following three general categories of orecasting techniques: (a) deterministic simple or multiple regression models incorporating different exogenous variables (seasonal time-varying regression, TVS; multiple regression models, MREG, incorporating time, number of fishers, wholesale value of catch and climatic variables); (b) univariate time series models (Winter{\textquoteright}s three parameter exponential smoothing, WES; ARIMA); and (c) multivariate time series techniques (harmonic regression, HREG; dynamic regression, DREG; vector autoregressions, VAR). Fits (for 1964-1987) and forecasts (for 1988-1989) obtained by the different models were compared with each other and with those of two naive methods (NM1 and NM12) and an empirical one (i.e. combination of forecasts, EMP) using 32 different measures of accuracy. The results revealed that the univariate ARIMA, closely followed by the multivariate DREG time series model, outperformed the others (NM1, NM12, TVS, MREG, HREG, EMP, VAR and WES) in terms of both fitting and forecasting accuracy. They were characterised by: (a) higher accuracy in terms of all, or most of the standard and relative tatistical measures that were usually tied together, (b) unbiased fits and forecasts; (c) much betterperformance than NM1 and NM12. In addition, ARIMA and DREG models: (d) explained over 80\% of the variance of the transformed catches; (e) had residuals that were essentially white noise; (f) in all cases predicted the amplitude and the start and end of the fishing season; and (g) produced forecasts that had mean absolute percentage error values under 28.2\% for 11 out of 16 monthly series. The different measures employed also indicated that EMP and WES models outperformed NM1, NM12, TVS, MREG and HREG models. EMP produced forecasts with MAPE values under 23.2\% for ten monthly series, whereas WES produced forecasts with MAPE values under 25.3\% for eight monthly series. This suggests their potential use in short-term fisheries forecasting. The limitations of the different forecasting techniques, measures of accuracy and data used in the present study are also discussed. Some of the empirical models built also had interesting biological/oceanographic explanations. Hence, the univariate ARIMA and multivariate DREG and VAR time series models all predicted ersistence of catches. The univariate ARIMA and multivariate HREG, DREG and VAR time series models all predicted cycles in the variability of the catches with periods of 1 and 2-3 years. Moreover, MREG, DREG and VAR models indicated that the number of fishers, wholesale value of catch and climate may, in a synergistic fashion, affect long-term trends and short-term variation in the catches of at least some species (or groups of species). Finally, DREG and VAR models predicted that variability and replacement of anchovy by sardine catches are not due to chance and wind activity over the northern Aegean Sea may act as a forcing function.}, keywords = {Pisces}, author = {Stergiou, K. I. and Christou, E. D. and Petrakis, G.} } @article {12464, title = {Size selectivity of diamond and square mesh cod-ends for Nephrops norvegicus in the Aegean Sea.}, journal = {Fisheries Research (Amsterdam)Fisheries Research (Amsterdam)}, volume = {29}, number = {3}, year = {1997}, pages = {203-209}, abstract = {Trawl cod-end mesh selection for Nephrops norvegicus was studied in two experiments in the western Aegean Sea using the coveredcod-end method (cover diamond-shaped, 10 mm). The following cod-end mesh sizes were used: 14 mm (knot-to-knot) diamond-shaped (14D), presently operated in the Hellenic commercial trawl fishery; 20 mm square-shaped (20S); 20 mm diamond-shaped (20D), this being the mesh size proposed by the EuropeanUnion (EU) for the entire Mediterranean. Selectivity estimates were derived from pooling the data over all hauls and sampling dates. The results showed that the proportion of the population retained was higher for 14D than for20D and 20S (0.99, 0.79 and 0.84, respectively). The direct estimation of the 50\% retention length for 14D was not possible because of the very small number of specimens escaping through that cod-end. The results also suggested that 20S has a higher and sharper selectivity than 20D (higher 50\% retention length and selection factor, lower selection range) and retains fewer undersized individuals than 20D. Yet, the 50\% retention lengths for 20D and 20S were both lower than the length at 50\% maturity, a fact indicating that even the use of 20S and 20D may provide little opportunity for reproduction.}, keywords = {Pisces}, author = {Stergiou, K. I. and Petrakis, G. and Chrissi-Yianna Politou} } @article {12465, title = {Small-scale fisheries in the South Euboikos Gulf (Greece): Species composition and gear competition}, journal = {Fisheries ResearchFisheries Research}, volume = {26}, number = {3-4}, year = {1996}, note = {TY - JOURCited By (since 1996): 12Export Date: 8 September 2006Source: ScopusReferences: (1993) Biological Basis for Control of Exploitation Rate of Fish Stocks by Fixed Gears, , Report to the Commission by an ad-hoc group of scientific and technical experts from Member States. Brussels, 15-18 February 1993; Bray, J.R., Curtis, J.T., An ordination of the upland forest communities of southern Wisconsin (1957) Ecol. Monogr., 27, pp. 325-349; Clarke, K.R., Green, R.H., Statistical design and analysis for a "biological effects" study (1988) Mar. Ecol. Prog. Ser., 46, pp. 213-226; Clarke, K.R., Warwick, R.M., (1989) Lecture Notes Prepared for the Training Workshop on the Statistical Treatment and Interpretation of Marine Community Data, (2 PART). , FAO/IOC/UNEP, Athens, September 1989; Field, J.G., Clark, K.R., Warwick, R.M., A practical strategy for analysing multispecies distribution patterns (1982) Mar. Ecol. Prog. Ser., 8, pp. 37-52; Hubert, W.A., Passive capture techniques (1983) Fisheries Techniques, pp. 95-122. , L.A. Nielsen and D.L. Johnson (Eds.), American Fisheries Society, Bethesda, MD; Lambshead, P.J.D., Platt, H.M., Shaw, K.M., The detection of differences among assemblages of marine benthic species based on an assessment of dominance and diversity (1983) J. Nat. Hist., 17, pp. 859-874; Maguran, A.E., (1988) Ecological Diversity and Its Measurement, 179p. , Croom Helm, London; Papaconstantinou, C., Caragitsou, E., Vassilopoulou, V., Petrakis, G., Stergiou, K.I., (1988) The Coastal Fisheries in Kastellorizo Area, 15, 106p. , National Centre for Marine Research, Athens, Special Publication; Petrakis, G., Stergiou, K.I., Christou, E., Politou, C.-Y., Karkani, M., Simboura, N., Kouyoufas, P., (1993) Small Scale Fishery in the South Euboikos Gulf, 83p. , National Centre for Marine Research, Technical Report (Contract No XIV-1/MED-91/007, EU), July 1993, Athens; Platt, H.M., Shaw, K.M., Lambshead, P.J.D., Nematode species abundance patterns and their use in the detection of environmental perturbations (1984) Hydrobiologia, 118, pp. 59-66; Roberts, C.M., Polunin, N.V.C., Are marine reserves effective in management of reef fisheries? (1991) Rev. Fish Biol. Fish., 1, pp. 65-91; Stergiou, K.I., Georgopoulos, D., The distribution of phytoplankton pigments and the fishery of anchovy, Engraulis engrasicolus, in the Hellenic Seas (1993) Naga (ICLARM), 16 (2-3), pp. 34-37; Stergiou, K.I., Petrakis, G., Description, assessment of the state and management of the demersal and inshore fisheries resources in the Hellenic seas (1993) Fresenius Envir. Bull., 2, pp. 312-319; Stergiou, K.I., Pollard, D., A spatial analysis of the commercial fisheries catches from the Hellenic Aegean Sea (1994) Fish. Res., 20, pp. 109-135; Stergiou, K.I., Christou, E., Petrakis, G., (1994) Operational Forecasting of Hellenic Fisheries Catches, 184p. , Stergiou and Co., Final Report (Contract No Med92/019, EU), Athens, November 1994; Stergiou, K.I., Papaconstantinou, C., Petrakis, G., Fisheries production in the Patraikos and Korinthiakos Gulfs and the Ionian Sea, 1980-1985 (1989) Proceedings of the 2nd Hellenic Symposium on Oceanography and Fisheries, 2, pp. 571-576. , in Greek, with English abstract; Whitehead, P.J.P., Bauchot, M.-L., Hureau, J.C., Nielsen, J., Tortonese, E., (1984) Fishes of the Northeastern Atlantic and the Mediterranean, 1-3. , UNESCO.}, month = {1996///}, pages = {325-336}, abstract = {In the present study, we compared the species composition and gear competition of the small-scale fisheries in the South Euboikos Gulf, Greece, from samples collected during 1992-1993 by beach seine (8 mm mesh size, bar length) and gill and trammel nets of different mesh sizes (gill nets: 17, 19, 21 and 23 mm, bar length; trammel nets: 19, 24 and 30 mm, bar length). The sampling depth ranged from 18 to 60 m. Comparisons used univariate and multivariate techniques based on species compositions and the commercial/total (C/T) ratio in terms of weight and number. The results of the various techniques were in close agreement, complemented each other, and suggested that the eight gears used may be aggregated into three main groups: (a) 30 mm trammel net (group I), which is highly selective when compared with all remaining gears; (b) all remaining gill and trammel nets (group II); and (c) beach seine (group III), which is an active unselective gear. These groups differed from each other in terms of species composition and, generally, diversity increased and C/T ratio decreased from group I to group III. The results indicate that banning the beach seine could be essential for conservation of demersal and inshore biodiversity.}, keywords = {GEAR COMPETITION, Greek waters, Pisces, Small-scale fisheries}, author = {Stergiou, K.I. and Petrakis, G. and Chrissi-Yianna Politou} } @article {12467, title = {Selectivity experiments in the NE Mediterranean: The effect of trawl codend mesh size on species diversity and discards.}, journal = {ICES Journal of Marine ScienceICES Journal of Marine Science}, volume = {54}, number = {5}, year = {1997}, pages = {774-786}, abstract = {In the present study we compare the overall performance of the 14 mm (from knot- codends. The experiments took place at 12 stations in the western Aegean Sea and were based on the covered codend method (cover codend: 10 mm from knot-to-knot, 10D). The results of applying multivariate techniques, to the different station/codend combinations suggest that they form groups which differ from each other in terms of species composition, species diversity, and catch numbers/weights per hour of fishing. In general, the 10D covers of 20D and 20S were separated from the 10D covers of 14D. The 20D and 20S codends were generally grouped together and separated from those of 14D and 10D. Finally, the 14D codend either form groups by themselves or group together with the 10D cover codends. In addition, the results indicated that the 20D and 20S codends, when compared with 14D, allow significantly more individuals and number of species to escape through the meshes and are characterized by considerably higher commercial/non-commercial ratios in terms of both weight and number. In absolute numbers and weights 14D caught a very large quantity of non-commercial species whereas the weight of the commercial species caught was among the lowest. The commercial/non-commercial ratios of 20D were higher than those of 20S and, in absolute numbers and weights, 20S caught relatively more non-commercial species than 20D. These facts clearly indicate that 14D is harmful in terms of species diversity for the Hellenic demersal stocks and hence its use should be prohibited.}, keywords = {Pisces}, author = {Stergiou, K. I. and Chrissi-Yianna Politou and Christou, E. D. and Petrakis, G.} } @proceedings {11812, title = {Fish biodiversity in the Pagassitikos Gulf. }, year = {2002}, month = {22-25.5.2002}, pages = {131}, address = {Thessaloniki}, keywords = {kape pisces}, author = {Siapatis, A. and Chilari, A. and Petrakis, G.} } @article {10347, title = {Weight-length relationships for 33 fish species in Greek waters.}, journal = {Fisheries Research (Amsterdam)Fisheries Research (Amsterdam)}, volume = {21}, number = {3-4}, year = {1995}, pages = {465-469}, abstract = {Weight-length regressions are presented for 33 fish species caught during 1992-1993 in the South Euboikos Gulf, Aegean Sea. Samples were collected with beach seine and gill and trammel nets. The values of the exponent b in the weight-length relationship W = aL-b ranged from 2.320 to 3.521 and the median value was 2.987, whereas 50\% of the values ranged between 2.840 and 3.140. The application of these regressions should be limited to the observed length ranges.}, keywords = {Pisces}, author = {Petrakis, G. and Stergiou, K. I.} } @article {10348, title = {Gill net selectivity for four fish species (Mullus barbatus, Pagellus erythrinus, Pagellus acarne and Spicara flexuosa) in Greek waters.}, journal = {Fisheries Research (Amsterdam)Fisheries Research (Amsterdam)}, volume = {27}, number = {1-3}, year = {1996}, pages = {17-27}, abstract = {In the present study, the size selectivity of gill nets for Mullus barbatus, Pagellus erythrinus, Pagellus acarne and Spicara flexuosa was estimated from samples collected with nets of 7, 19, 21 and 23 mm mesh sizes (nominal bar length). Sampling was conducted at 15 stations in the South Euboikos Gulf (western Aegean Sea) in 1992 and 1993. The individual selection factors ranged from 6.15 to 9.01 and the optimum selection lengths increased from 10.7 to 14.4 cm fork length (FL) for P. erythrinus, from 11.0 to 14.9 cm FL for P. acarne, from 13.3 to 17.9 cm FL for M. barbatus, and from 13.0 to 17.6 cm FL for S. flexuosa for the 17 and 23 mm gill nets, respectively. Comparisons between the estimated optimum selection lengths and the minimum legal landing sizes and sizes at 50\% maturation as well as comparisons between the length frequency distributions of the above mentioned species in gill net catches with those in trawl catches are also presented and discussed.}, keywords = {Pisces}, author = {Petrakis, G. and Stergiou, K I.} } @article {10343, title = {Biology of Sparisoma cretense in the Dodecanese (Greece).}, journal = {Zeitschrift f{\"u}r Angewandte IchthyologieZeitschrift f{\"u}r Angewandte Ichthyologie}, volume = {6}, number = {1}, year = {1990}, pages = {14-23.}, keywords = {Pisces}, author = {Petrakis, G. and Papaconstantinou, C.} } @article {10344, title = {Virtual population analysis and cohort analysis of hake in the North Aegean Sea.}, journal = {FAO Fisheries ReportFAO Fisheries Report}, volume = {477}, year = {1992}, note = {Report. Technical Consultation on Stock Assessment in the Eastern Mediterranean. Sess. 4.}, pages = {163-172}, author = {Petrakis, G. and Papaconstantinou, C. and Stergiou, K.I.} } @article {10345, title = {Cuttlefish trammel net {\textquotedblleft}Metier{\textquotedblright} in Greece. }, journal = {Rapport et Proc{\'e}s-Verbaux des R{\'e}unions de la Commission Internationale pour l{\textquoteright}Exploration Scientifique de la Mer M{\'e}diterran{\'e}eRapport et Proc{\'e}s-Verbaux des R{\'e}unions de la Commission Internationale pour l{\textquoteright}Exploration Scientifique de la Mer M{\'e}diterran}, volume = {36}, year = {2001}, pages = {309}, keywords = {Mollusca Cephalopoda}, author = {Petrakis, G. and Chrissi-Yianna Politou} } @article {10349, title = {Size selectivity of diamond and square mesh codends for four commercial Mediterranean fish species.}, journal = {ICES Journal of Marine ScienceICES Journal of Marine Science}, volume = {54}, number = {1}, year = {1997}, pages = {13-23}, abstract = {In the present study, we compared the size selectivity of the 14 mm (knot-to-knot) diamond-shaped codend (14D), presently used in Hellenic waters, with those of 20 mm square-shaped (20S) and 20 mm diamond-shaped (20D) codends for four commercially important demersal species (Merluccius merluccius, Micromesistius poutassou, Trisopterus minutus capelanus andLepidorhombus boscii). Codend selectivity was estimated using the covered codend method. Our results suggested that 14D was not elective for any of the target species and the proportion retained by 14D ranged between 0.88 and 1. In addition, only in the case of M. merluccius did the results suggest that 20S is significantly more selective and retains fewer under-sized fish than 20D. With the exception of M. merluccius, the direct estimation of the 14D L-50 values was not possible, because of the small number of specimens retained by the cover codend of 14D. The L-50 value of M. merluccius for 14Dwas lower than its currently enforced minimum landing size (MLS) and length at 50\% maturity. In contrast, for 20S and/or 20D codends, even though the estimated L-50 values were generally close to, or higher than, the species{\textquoteright}MLS, the L-50 value of 20S for M. merluccius and that of 20D for L. boscii, were much smaller than their lengths at 50\% maturity, a fact indicating that even the use of 20S and 20D, respectively, provides small opportunities for reproduction. Hence, the appropriate mesh sizes for these two species must be greater than 20 mm and their MLS must be raised. In contrast, for T. m.capelanus and M. poutassou, the L-50 values of 20D (but not of 14D) were close to their lengths at 50\% maturity, a fact indicating that 20D isappropriate for these two species. The above mentioned facts clearly showed that: (a) 14D is harmful, in terms of size of landed fish, for the Hellenic demersal stocks and hence its use should be discontinued and (b) the use of asingle appropriate mesh size for the Mediterranean trawl fishery as a wholeis impossible because of its multispecies nature and the different body sizes of species involved. Since the majority of the individuals escaping through the meshes of 20D or 20S are immature and under-sized (i.e. their length issmaller than MLS), the replacement of 14D by either 20D or 20S, the former being the codend mesh size proposed by EU for the entire Mediterranean, will be accompanied by increased yield per recruit.}, keywords = {Pisces}, author = {Petrakis, G. and Stergiou, K. I.} } @article {10346, title = {Gill net selectivity for Diplodus annularis and Mullus surmuletus in Greek waters.}, journal = {Fisheries Research (Amsterdam)Fisheries Research (Amsterdam)}, volume = {21}, number = {3-4}, year = {1995}, pages = {455-464}, abstract = {The present study is the first concerning gill net selectivity in Greek marine waters. Selectivity estimates were made for Diplodus annularis and Mullus surmuletus. Sampling took place at 15 stations in the South Euboikos Gulf in 1992 and 1993 with a chartered commercial small-scale fishing vessel. Samples were collected with gill nets of mesh sizes (bar length) of 17, 19, 21 and 23 mm. Individual selection factors for M. surmuletus and D. annularis ranged between 4.83 and 7.42 whereas the optimum selection lengths increased from 12.2 to 16.5 cm for M. surmuletus and from 8.8 to 11.9 cm for D. annularis, for the 17 mm and 23 mm nets, respectively. Comparisons between the estimated optimum lengths and the minimum legal landing sizes and between the length frequency distributions of the catches of D. annularis and M. surmuletus in gill nets and those in trawl nets are also presented.}, keywords = {Pisces}, author = {Petrakis, G. and Stergiou, K I.} } @book {9844, title = {Population dynamics of demersal fish stock in Corinthiakos, Patraikos, Gulfs and Ionian Sea. Part 2 (Population dynamics of fish species of commercial interest. hake, red mullet, red pandora and bleu whiting).}, year = {1988}, pages = {1-277.}, publisher = {Ethniko Kentro Thalassion Erevnon Eidhiki Ekdosi No 16}, organization = {Ethniko Kentro Thalassion Erevnon Eidhiki Ekdosi No 16}, keywords = {Pisces}, author = {Papaconstantinou, C. and Caragitsou, E. and Mytilineou, C. and Petrakis, G. and Vasilopoulos, V.} } @article {9845, title = {The coastal fisheries in the Kastellorizo area (Dodecaneses) Special publication.}, journal = {National Centre for Marine Research. Special PublicationNational Centre for Marine Research. Special Publication}, volume = {15}, number = {106}, year = {1988}, author = {Papaconstantinou, C. and Caragitsou, E. and Vasilopoulou, V. and Petrakis, G. and Stergiou, K.} } @article {9851, title = {Preliminary study on the biology of piper (Trigla lyra, L., 1758) in the Aegean Sea.}, journal = {FAO Fisheries ReportFAO Fisheries Report}, volume = {477}, year = {1992}, note = {Report. Technical Consultation on Stock Assessment in the Eastern Mediterranean. Sess. 4}, pages = {127-137}, author = {Papaconstantinou, C. and Petrakis, G. and Caragitsou, E. and Mytilineou, C.} } @article {9852, title = {Natural History of sole (Solea vulgaris L. 1758) in the Amvrakikos Gulf (Greece).}, journal = {Rapport et Proc{\'e}s-Verbaux des R{\'e}unions de la Commission Internationale pour l{\textquoteright}Exploration Scientifique de la Mer M{\'e}diterran{\'e}eRapport et Proc{\'e}s-Verbaux des R{\'e}unions de la Commission Internationale pour l{\textquoteright}Exploration Scientifique de la Mer M{\'e}diterran}, volume = {32}, number = {1}, year = {1990}, pages = {266.}, keywords = {kape pisces}, author = {Papaconstantinou, C. and Petrakis, G. and Caragitsou, S.} } @article {9853, title = {A preliminary study on the fishery biology of Hake in the Aegean Sea.}, journal = {FAO Fisheries ReportFAO Fisheries Report}, volume = {477}, year = {1992}, note = { Report. Technical Consultation on Stock Assessment in the Eastern Mediterranean. Sess. 4.}, pages = {139-149}, author = {Papaconstantinou, C. and Petrakis, G. and Fourtouni, A.} } @article {9854, title = {The demersal fishfauna of the eastern coasts of central Greece.}, journal = {Biologia Gallo-hellenicaBiologia Gallo-Hellenica}, volume = {22}, year = {1995}, pages = {363-374.}, keywords = {kape pisces}, author = {Papaconstantinou, C. and Petrakis, G. and Mytilineou, Ch. and Chrissi-Yianna Politou and Vassilopoulou, V.} } @article {9855, title = {The fecundity of hake (Merluccius merluccius L.) and red pandora (Pagellus erythrinus L.) in Greek seas.}, journal = {Acta AdriaticaActa Adriatica}, volume = {27}, number = {1-2}, year = {1986}, pages = {85-95.}, keywords = {Pisces}, author = {Papaconstantinou, C. and Petrakis, G. and Vassilopoulou, V.} } @article {9857, title = { Abundance of non-commercial fish in the Patraikos and Korinthiakos Gulfs and the Ionian Sea, Greece. Report. Technical Consultation on Stock Assessment in the Adriatic. 4}, journal = {FAO Fisheries ReportFAO Fisheries Report}, volume = {345}, year = {1986}, note = {(Charbonnier, D. (ed.); Garcia, S. (ed.)}, pages = {107-110}, author = {Papaconstantinou, C. and Stergiou, K. I. and Petrakis, G.} } @article {9864, title = {The demersal fishfauna of the North and west Aegean sea.}, journal = {BiosBios}, volume = {2}, year = {1994}, pages = {35-45.}, keywords = {kape pisces}, author = {Papaconstantinou, C. and Vassilopoulou, V. and Petrakis, G. and Caragitsou, E. and Mytilineou, Ch. and Fourtouni, A. and Chrissi-Yianna Politou} } @proceedings {4550, title = {Population structure and reproduction of the deep-water shrimp, Plesionika martia (Decapoda: Pandalidae) from the eastern Ionian Sea. }, year = {2002}, month = {2-6.9.2002}, pages = {49}, address = {Corfu}, keywords = {KAPE crustacea decapoda}, author = {Chilari, A. and Petrakis, G. and Thessalou-Legaki, M.} } @booklet {4551, title = {Aspects of the biology of blackspot seabream (Pagellus bogaraveo) in the Ionian Sea, Greece}, howpublished = {Fisheries ResearchFisheries Research}, volume = {77}, number = {1}, year = {2006}, note = {Export Date: 4 September 2006Source: ScopusReferences: Alcazar, A.J., Carrasco, F.J., Llera, G.E., Menendez De La Hoz, M., Ortea, R.J., Vizcaino, F.A., Aportacion al estudio del besugo en el Principado de Asturias (1987) Recurs. Pesq. Asturias, 4, 88p; (2002) Report of the First Meeting of the Subgroup on the Mediterranean Sea (SGMED) of the Scientific, , Commission Staff Working Paper. Technical and Economic Committee on Fisheries (STEFC). SEC (2002). Brussels, 4-7 September 2002; Azov, Y., Eastern Mediterranean - A marine desert? (1991) Mar. Pollut. Bull., 23, pp. 225-232; Bagenal, T.B., Tesch, F.W., Age and growth (1978) IBP Handbook No. 3, pp. 101-136. , Bagenal, T. (Ed.), Methods for Assessment of Fish Production in Fresh Waters, third ed. Blackwell Scientific Publications, Oxford; Bauchot, M.-L., Hureau, J.-C., Sparidae (1986) Fishes of the North-eastern Atlantic and the Mediterranean, 2, pp. 516-1007. , P.J.P. Whitehead M.-L. Bauchot J.-C. Hureau J. Nielsen E. Tortonese UNESCO; Beamish, R.J., Fournier, D.A., A method for comparing the precision of a set of age determinations (1981) Can. J. Fish. Aquat. Sci., 38, pp. 982-983; Beamish, R.J., Mc Farlane, G.A., Current trends in age determination methodology (1987) Age and Growth of Fish, pp. 15-42. , R.C. Summerfelt G.E. Hall The Iowa State University Press Ames, Iowa; Bernard, D.R., Multivariate analysis as a means of comparing growth in fish (1981) Can. J. Fish. Aquat. Sci., 38, pp. 233-236; Buxton, C.D., Life-history changes in exploited reef fishes on the east coast of South Africa (1993) Environ. Biol. Fish., 36, pp. 47-63; Buxton, C.D., Clarke, J.R., The biology of the white musselcracker Sparodon durbanensis (Pisces: Sparidae) on the eastern Cape coast, South Africa (1991) S. Afr. J. Zool., 10, pp. 285-296; Buxton, C.D., Clarke, J.R., The biology of the bronze bream Pachymetopon grande (Pisces: Sparidae) from the south-east Cape coast, South Africa (1992) S. Afr. J. Zool., 27, pp. 21-32; Buxton, C.D., Garratt, P.A., Alternative reproductive styles in seabreams (Pisces: Sparidae) (1990) Environ. Biol. Fish., 28, pp. 113-124; Carlander, K.D., A history of scale age and growth studies of North American freshwater fish (1987) Age and Growth of Fish, pp. 3-14. , R.C. Summerfelt G.E. Hall The Iowa State University Press Ames, Iowa; Casselman, J.M., Growth and relative size of calcified structures of fish (1990) Trans. Am. Fish. Soc., 119, pp. 673-688; Coupe?, R., Cinquie?me note sur les Sparide?s de la co?te marocaine, Pagellus centrodontus (Val. 1836) (1954) Cons. Int. Explor. Mer., p. 11; Esta?cio, S., Mendonc?a, A., Krug, H., Menezes, G.M., Pinho, M.R., Aspects of the reproduction of six exploited demersal fish species in the Azores archipelago, Arquipe?lago (2001) Life Mar. Sci., (SUPPL. 2 PART B), pp. 83-94; Gayanilo, F.C., Sparre, P., Pauly, D., The FAO-ICLARM Stock Assessment Tools (FiSAT) User{\textquoteright}s Guide (1996) FAO, Comp. Inf. Ser. (Fish.), 8, 126p. , FAO, Rome; Gil, J., Sobrino, I., Studies on reproductive biology of the red (blackspot) seabream [Pagellus bogaraveo (Bru?nnich, 1768)] from the Strait of Gibraltar (ICES 9a/SW Spain) (2001) Sci. Counc. Res. Doc. NAFO. No. 01/86, 6p; Gonc?alves, J.M.S., Bentes, L., Lino, P.G., Ribeiro, J., Cana?rio, A.V.M., Erzini, K., Weight-length relationships for selected fish species of the small-scale demersal fisheries of the south and south-west coast of Portugal (1997) Fish. Res., 30, pp. 253-256; Gueguen, J., Croissance de la dorade, Pagellus centrodontus Delaroche (1969) Rev. Trav. Inst. Pe?ches Marit., 33, pp. 251-264; Kohler, A.C., Clark, J.R., Haddock scale-otolith comparisons (1958) J. Fish. Res. Board Can., 15, pp. 1239-1246; Krug, H.M., Reproduction of the blackspot seabream, Pagellus bogaraveo (Bru?nnich, 1768) in Azorean waters (1986) ICES Council Meeting 1986 (Collected Papers), , ICES, Copenhagen, Denmark; Krug, H.M., The Azorean blackspot seabream, Pagellus bogaraveo (Bru?nnich, 1768) (Teleostei: Sparidae): age and growth (1989) Cybium, 13, pp. 347-355; Krug, H.M., The Azorean blackspot seabream, Pagellus bogaraveo (Bru?nnich, 1768) (Teleostei: Sparidae): reproductive cycle, hermaphroditism, maturity and fecundity (1990) Cybium, 14, pp. 151-159; Krug, H.M., Variation in the reproductive cycle of the blackspot seabream, Pagellus bogaraveo (Bru?nnich, 1768) in the Azores, Arquipe?lago (1998) Life Mar. Sci., 16, pp. 37-47; Mayrat, A., Allometrie et taxinomie (1970) Re?v. Stat. Appl., 18, pp. 47-58; Mendes, B., Fonseca, P., Campos, A., Weight-length relationships for 46 fish species of the Portuguese west coast (2004) J. Appl. Ichthyol., 20, pp. 355-361; Micale, V., Maricchiolo, G., Genovese, L., The reproductive biology of blackspot sea bream Pagellus bogaraveo in captivity. I. Gonadal development, maturation and hermaphroditism (2002) J. Appl. Ichthyol., 18, pp. 172-176; Munro, J.L., Pauly, D., A simple method for comparing the growth of fishes and invertebrates (1983) Fishbyte, 1, pp. 5-6; Mytilineou, Ch., Papaconstantinou, C., Aspects on the biology of Blackspot Seabream, Pagellus bogaraveo (Bru?nnich, 1768) in the Northern Aegean Sea (Greece) (1995) Rapp. Comm. Int. Mer. Me?dit., 34, p. 251; Nikolsky, G.V., (1976) The Ecology of Fishes, , sixth ed. Academic Press New York/London; Olivier, R., Poissons de chalut. la dorade (Pagellus centrodontus) (Re?sume? pratique de nos connaissances sur ce poisson) (1928) Rev. Trav. Off. Pe?ches Marit., 1 (4), pp. 5-22; Orsi Relini, L., Fida, B., Note di biologia di Pagellus bogaraveo in Mar Ligure (1992) Oebalia, 17 (SUPPL.), pp. 81-86; Pajuelo, J.G., Lorenzo, J.M., Reproduction, age, growth and mortality of axillary seabream, Pagellus acarne (Sparidae), from the Canary archipelago (2000) J. Appl. Ichthyol., 16, pp. 41-47; Ramos, F., Cendrero, O., Notes on the age and growth of Pagellus cantabricus (Asso) of Northern Spain (1967) ICES C.M. 1967/G, 3, 8p; Sanchez, F., Biology and fishery of the red sea-bream (Pagellus bogaraveo, B.) in VI, VII and VIII subareas of ICES (1983) ICES C.M. 1983/G, 38, 11p. , ICES Council Meeting 1983 (collected papers); Sobrino, I., Gil, J., Studies on age determination and growth pattern of the red (Blackspot) seabream [Pagellus bogaraveo (Bru?nnich, 1768)] from the Strait of Gibraltar (ICES 9a/SW Spain): Application to the species migratory pattern (2001) Sci. Counc. Res. Doc. NAFO. No. 01/87, 5p; Sokal, R.R., Rohlf, F.J., (1987) Introduction to Biostatistics, , second ed. Freeman New York; Spedicato, M.T., Greco, S., Sophronidis, K., Lembo, G., Giordano, D., Argyri, A., Geographical distribution, abundance and some population characteristics of the species of the genus Pagellus (Osteichthyes: Perciformes) in different areas of the Mediterrenean (2002) Sci. Mar., 66 (SUPPL. 2), pp. 65-82; Williamson, H.C., Report on the reproductive organs of Sparus centrodontus, Delaroche, Sparus cantharus L., Sebastes marinus (L.) and Sebastes dactylopterus (Delaroche); And on the ripe eggs and larvae of Sparus centrodontus (?), and Sebastes marinus (1910) Fish. Bd. Scotland, Sci. Invest., 1, pp. 1-35; Zar, J.H., (1996) Biostatistical Analysis, , third ed. Prentice-Hall Englewood Cliffs, NJ.}, month = {2006///}, pages = {84-91}, abstract = {The biology of Pagellus bogaraveo (Bru?nnich, 1768) along the west coast of Greece (Ionian Sea, Eastern Mediterranean Sea) was studied, based on data collected during experimental fishing in depths between 200 and 550 m and from observations on commercial fishery vessels, during March to August 2001. Total length ranged from 15 to 40 cm. The length-weight relationship for all individuals was described by the following parameters: {\'a} = 0.000020 and b = 2.9339. The determination of age was done by observing and analysing whole otoliths (sagitta) and scales. Fish aged 1-13 years were found. The von Bertalanffy growth parameters based on data from otoliths were L ? = 49.2 cm, k = 0.106 year-1 and t0 = -1.81 for males and L? = 49.5 cm, k = 0.100 year-1 and t0 = -2.29 for females, whereas based on scale reading were L? = 46.1 cm, k = 0.082 year-1 and t0 = -3.40 for males and L? = 52.8 cm, k = 0.059 year-1 and t0 = -4.73 for females. Some mature specimens, mainly females, were caught in March. The overall sex ratio of males to females was 1:1.29. {\textcopyright} 2005 Elsevier B.V. All rights reserved.}, keywords = {age, Blackspot seabream, Eastern Mediterranean Sea, growth, Pagellus bogaraveo}, author = {Chilari, A. and Petrakis, G. and Tsamis, E.} } @article {4552, title = {Population structure and reproduction of the deep-water shrimp Plesionika martia (Decapoda: Pandalidae) from the eastern Ionian Sea}, journal = {Journal of Crustacean BiologyJournal of Crustacean Biology}, volume = {25}, number = {2}, year = {2005}, note = {Export Date: 4 September 2006Source: ScopusReferences: Abello?, P., Carbonell, A., Torres, P., Biogeography of epibenthic crustaceans on the shelf and upper slope off the Iberian Peninsula Mediterranean coasts: Implications for the establishment of natural management areas (2002) Scientia Marina, 66 (2 SUPPL.), pp. 183-198; Valladares, F.J., Castello?n, A., Analysis of the structure of decapod crustacean assemblages off the Catalan coast (North-West Mediterranean) (1988) Marine Biology, 98, pp. 39-49; Campisi, S., Cuccu, D., Murenu, M., Follesa, M.C., Cau, A., Aspetti riproduttivi di Plesionika martia (A. Milne Edwards, 1883) nei mari sardi (1998) Biologia Marina Mediterranea, 5, pp. 268-272; Carbonell, A., Abello?, P., Distribution characteristics of pandalid shrimps (Decapoda: Caridea: Pandalidae) along the western Mediterranean Sea (1998) Journal of Natural History, 32, pp. 1463-1474; Palmer, M., Abello?, P., Torres, P., Alemany, R., Gil De Sola, L., Mesoscale geographical patterns in the distribution of pandalid shrimps Plesionika spp. in the Western Mediterranean (2003) Marine Ecology Progress Series, 247, pp. 151-158; Cartes, J.E., Diets of deep-water pandalid shrimps on the Western Mediterranean slope (1993) Marine Ecology Progress Series, 96, pp. 49-61; Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean (1993) Journal of the Marine Biological Association of the United Kingdom, 73, pp. 795-811; Company, J.B., Maynou, F., Deep-water decapod crustacean communities in the Northwestern Mediterranean: Influence of submarine canyons and season (1994) Marine Biology, 120, pp. 221-229; Sarda?, F., Abundance and diversity of decapod crustaceans in the deep-Catalan Sea (Western Mediterranean) (1992) Journal of Natural History, 26, pp. 1305-1323; Company, J.B., Cartes, J.E., Sarda?, F., Biological patterns and near-bottom population characteristics of two pasiphaeid decapod crustacean species, Pasiphaea sivado and P. multidentata, in the northwestern Mediterranean Sea (2001) Marine Biology, 139, pp. 61-73; Sarda?, F., Reproductive patterns and population characteristics in five deep-water pandalid shrimps in the western Mediterranean along a depth gradient (150-1100 m) (1997) Marine Ecology Progress Series, 148, pp. 49-58; Growth parameters of deep-water decapod crustaceans in the Northwestern Mediterranean Sea: A comparative approach (2000) Marine Biology, 136, pp. 79-90; Puig, P., Cartes, J.E., Palanques, A., Duration and timing of reproduction in decapod crustaceans of the NW Mediterranean continental margin: Is there a general pattern? (2003) Marine Ecology Progress Series, 261, pp. 201-216; D{\textquoteright}Onghia, G., Mastrototaro, F., Matarrese, A., Politou, C.-Y., Mytilineou, Ch., Biodiversity of the upper slope demersal community in the Eastern Mediterranean: Preliminary comparison between two areas with and without trawl fishing (2003) Journal of Northwest Atlantic Fishery Science, 31, pp. 263-273; Tursi, A., Maiorano, P., Matarrese, A., Panza, M., Demersal fish assemblages from the bathyal grounds of the Ionian Sea (middle-eastern Mediterranean) (1998) Italian Journal of Zoology, 65 (SUPPL.), pp. 287-292; Fanelli, E., Belluscio, A., Colloca, F., Carpentieri, P., Ardizzone, G.D., Distribuzione e abbondanza dei pandalidi del genere Plesionika (Crustacea, Decapoda) nel mar Tirreno centrale (2001) Biologia Marina Mediterranea, 8, pp. 708-711; Froglia, C., Preliminary report on the Crustacea Decapoda of Adriatic deep waters (1972) Thalassia Jugoslavia, 8, pp. 75-79. , Proceedings of the First Colloquium Crustacea Decapoda Mediterranea, Rovinj, Croatia, Yugoslavia, 19-22 September 1972; Fryer, R.J., A model of between-haul variation in selectivity (1991) ICES Journal of Marine Science, 48, pp. 281-290; Gadgil, M., Bossert, W.H., Life historical consequences of natural selection (1970) The American Naturalist, 104, pp. 1-24; Gayanilo Jr., F.C., Sparre, P., Pauly, D., The FAO-ICLARM Stock Assessment Tools (FiSAT) User{\textquoteright}s Guide (1995) FAO Computerized Information Series (Fisheries), 8, 126p. , Rome, FAO; Gonza?lez, J.A., Quiles, J.A., Tuset, V.M., Garci?a-Di?az, M.M., Santana, J.I., Data on the family Pandalidae around the Canary Islands, with first record of Plesionika antigai (Caridea) (2001) Hydrobiologia, 449, pp. 71-76; Santana, J.I., Shrimps of the family Pandalidae (Crustacea, Decapoda) off the Canary Islands, eastern Central Atlantic (1996) South African Journal of Marine Science, 17, pp. 173-182; Kallianiotis, A., Sophronidis, K., Vidoris, P., Tselepides, A., Demersal fish and megafaunal assemblages on the Cretan continental shelf and slope (NE Mediterranean): Seasonal variation in species density, biomass and diversity (2000) Progress in Oceanography, 46, pp. 429-455; Katag?an, T., Kocatas?, A., Benli, H.A., Note pre?liminaire sur les De?capodes bathyaux de la co?te Turque de al mer Ege?e (1988) Rapport de la Commission Internationale Pour l{\textquoteright} Exploration Scientifique de la Mer Me?diteranne?e, 31, p. 23; King, M.G., Butler, A.J., Relationship of life-history patterns to depth in deep-water caridean shrimps (Crustacea: Natantia) (1985) Marine Biology, 86, pp. 129-138; Moffitt, R.B., The sexuality of tropical deepwater shrimps (Decapoda: Pandalidae) (1984) Journal of Crustacean Biology, 4, pp. 567-571; Koukouras, A., Kallianiotis, A., Vafidis, D., The decapod crustacean genera Plesionika Bate (Natantia) and Munida Leach (Anomura) in the Aegean Sea (1998) Crustaceana, 71, pp. 714-720; Maiorano, P., D{\textquoteright}Onghia, G., Capezzuto, F., Sion, L., Life-history traits of Plesionika martia (Decapoda: Caridea) from the eastern-central Mediterranean Sea (2002) Marine Biology, 141, pp. 527-539; Marsan, R., Ungaro, N., Marano, C.A., Marzano, M.C., Remarks on distribution and fishery biology of some Plesionika species (Decapoda, Pandalidae) in the southern Adriatic basin (Mediterranean Sea) (2000) Proceedings of the Fourth International Crustacean Congress, pp. 763-769. , J. C. von Vaupel Klein and F. R. Schram, eds. The Biodiversity Crisis and Crustacea. A. A. Balkema, Rotterdam; Maynou, F., Conan, G.Y., Cartes, J.E., Company, J.B., Sarda?, F., Spatial structure and seasonality of decapod crustacean populations on the northwestern Mediterranean slope (1996) Limnology and Oceanography, 41, pp. 113-125; Munro, J.L., Pauly, D., A simple method for comparing the growth of fishes and invertebrates (1983) Fishbyte, 1, pp. 5-6; Mura, M., Cau, A., Community structure of the decapod crustaceans in the middle bathyal zone of the Sardinian Channel (1994) Crustaceana, 67, pp. 259-266; Mytilineou, Ch., Maiorano, P., Kavadas, S., D{\textquoteright}Onghia, G., Kapiris, K., Capezzuto, F., Size structure comparison in some demersal species between two areas of different fishing impact in the deep waters of Eastern-central Mediterranean (Ionian Sea) (2001) Deep-Sea Fisheries Symposium, 7p. , Scientific Council Research Document. Northwest Atlantic Fisheries Organization. 01/125; Orecchia, S., Mori, M., Biagi, F., Note su Pseudione affinis G.O. Sars, Isopode Bopiride parassita del gambero Plesionika martia A. Milne Edwards del Tirreno settentrionale (1999) Doriana, 7 (313), pp. 1-10; Petrakis, G., Stergiou, K.I., Size selectivity of diamond and square mesh codends for four commercial Mediterranean fish species (1997) ICES Journal of Marine Science, 54, pp. 13-23; Pipitone, C., Tumbiolo, M.L., Decapod and Stomatopod crustaceans from the trawlable bottoms of the Sicilian channel (central Mediterranean Sea) (1993) Crustaceana, 65, pp. 358-364; Politou, C.-Y., Karkani, M., Dokos, J., Distribution of decapods caught during MEDITS surveys in Greek waters (1998) Actes de Colloques, 26, pp. 196-207. , J. A. Bertrand and G. Relini, eds. Demersal Resources in the Mediterranean. IFREMER; Distribution of pandalid shrimps in Greek waters (Ionian Sea and Argosaronikos) (2000) Proceedings of the Sixth Hellenic Symposium on Oceanography and Fisheries, pp. 61-66. , Chios, Greece. [In Greek]; Puig, P., Company, J.B., Sarda?, F., Palanques, A., Responses of deep-water shrimp populations to intermediate nepheloid layer detachments on the Northwestern Mediterranean continental margin (2001) Deep-Sea Research I, 48, pp. 2195-2207; Relini, G., Bertrand, J., Zamboni, A., Synthesis of the knowledge on bottom fishery resources in Central Mediterranean, Italy and Corsica (1999) Biologia Marina Mediterranea, 6 (1 SUPPL.), pp. 1-868; Rinelli, P., Giordano, D., Perdichizzi, F., Greco, S., Observations on decapod crustaceans from trawlable bottoms in the southern Tyrrhenian Sea (western Mediterranean) (2000) Proceedings of the Fourth International Crustacean Congress, pp. 779-789. , J. C. von Vaupel Klein and F. R. Schram, eds. The Biodiversity Crisis and Crustacea. A. A. Balkema, Rotterdam; Sparre, P., Ursin, E., Venema, S.C., Introduction to Tropical Fish Stock Assessment. Part 1. Manual (1989) FAO Fisheries Technical Paper, 306 (1), 337p. , Rome, FAO; Stergiou, K.I., Intraspecific variations in size- and age-at-maturity for red bandfish, Cepola macrophthalma (1999) Environmental Biology of Fishes, 54, pp. 151-160; S?tevc?ic?, Z., Check-list of the Adriatic Decapod Crustacea (1990) Acta Adriatica, 31, pp. 183-274; Thessalou-Legaki, M., Reproductive variability of Parapandalus narval (Crustacea: Decapoda) along a depth gradient (1992) Estuarine, Coastal and Shelf Science, 35, pp. 593-603; Frantzis, A., Nassiokas, K., Hatzinikolaou, S., Depth zonation in a Parapandalus narval (Crustacea, Decapoda, Pandalidae) population from Rhodos Island, Greece (1989) Estuarine, Coastal and Shelf Science, 29, pp. 273-284; Ungaro, N., Marano, C.A., Marsan, R., Martino, M., Marzano, M.C., Strippoli, G., Vlora, A., Analysis of demersal species assemblages from trawl surveys in the South Adriatic sea (1999) Aquatic Living Resources, 12, pp. 177-185; Zar, J.H., (1996) Biostatistical Analysis, 3rd Edition, 662p. , Prentice-Hall, Englewood Cliffs, New Jersey; Zariquiey Alvarez, R., Crusta?ceos Deca?podos Ibe?ricos (1968) Investigacio?n Pesquera, 32, pp. 1-510.}, month = {2005///}, pages = {233-241}, abstract = {The population dynamics, growth, and reproduction of the deep-water pandalid shrimp Plesionika martia were studied in the eastern Mediterranean Sea. Samples were collected monthly (July 1999-June 2000) at a depth range of 440-600 m between Zakynthos Island and Peloponnissos (eastern Ionian Sea, Greece). Additional samples were taken in April and May 2001. Size-frequency distribution revealed that mean female size consistently exceeded that of males throughout the year (CL range: 8-23.5 mm and 9.3-29.1 mm for males and females, respectively). Smaller individuals of both sexes occurred only at depths less than 500 m. Mean size of both sexes increased linearly with depth, whereas a less prominent trend of sex ratio in favor of females by depth was observed. The overall yearly and the monthly sex ratio were in favor of females except during winter, when the two sexes were equally represented. Carapace length-wet weight relationships showed negative allometry, for both males and females. Ovigerous females occurred year around, although the main reproductive season extended from April to October. The smallest ovigerous female was 11.8 mm CL, whereas the size at 50\% sexual maturity (CLm50) was estimated as 16.16 mm. Fecundity and reproductive output were found loosely related to shrimp size. The von Bertalanffy growth curve parameters were estimated as: L? = 30.6 mm, k = 0.31 year-1 in females and L? = 28.2 mm, k = 0.53 year-1 in males. Regarding the major life history traits, P. martia from the eastern Ionian seemed to conform to those in other Mediterranean areas. Nevertheless, some population differences exist, which can be related to the oligotrophic conditions and the lack of fishing pressure in the studied area.}, keywords = {Crustacea}, author = {Chilari, A. and Thessalou-Legaki, M. and Petrakis, G.} }