@article {14825, title = {Effect of coastal topography on the spatial structure of the populations of small pelagic fish}, journal = {Marine Ecology Progress SeriesMarine Ecology Progress Series}, volume = {265}, year = {2003}, pages = {243{\textendash}253}, keywords = {Pisces}, author = {Giannoulaki, M. and Machias, A. and Koutsikopoulos, C. and Haralabous, J. and Somarakis, S. and Tsimenides, N.} } @article {14829, title = {The spatial distribution of anchovy and sardine in the northern Aegean Sea in relation to hydrographic regimes}, journal = {Belgian Journal of ZoologyBelgian Journal of Zoology}, volume = {135}, number = {2}, year = {2005}, note = {Times Cited: 1ArticleEnglishCited References Count: 20995eu}, month = {JUL}, pages = {151-156}, abstract = {Acoustic survey data were combined with hydrological parameters with the aim of understanding the relationships between the spatial distribution of anchovy and sardine and environmental regimes. Acoustic and concurrent hydrological sampling was carried out in the Northern Aegean Sea (eastern Mediterranean) during June 1995 and June 1996. In order to examine hydrological parameter selection by anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus), cumulative distribution functions were estimated. Both species were significantly associated with areas of deeper surface and upper mixed layers, which implied an association of anchovy and sardine with anticyclones. Within the range of available temperatures and bottom depths, sardine further showed a significant affinity to warm as well as to shallow waters. These results are discussed in relation to species{\textquoteright} life histories and existing knowledge of oceanographic features in the surveyed area.}, keywords = {anchovy, Atlantic, environmental variable selection, fish, northern aegean sea, Pisces, sardine, Spatial distribution}, author = {Giannoulaki, M. and Machias, A. and Somarakis, S. and Tsimenides, N.} } @article {13656, title = {Discrimination between populations of picarel (Spicara smaris L., 1758) in the Aegean Sea, using multivariate analysis of phenetic characters.}, journal = {Fisheries Research (Amsterdam)Fisheries Research (Amsterdam)}, volume = {30}, number = {3}, year = {1997}, pages = {191-197}, abstract = { We examined the discrimination of picarel stocks in the Aegean Sea. The results of multivariate analysis on 14 morphometric and six meristic characteristics per individual showed no difference between the two sexes. Only morphometric characters showed enoughbetween-group variability for the analysis. Analysis of these characters did not reveal clear discrimination of populations between all six areas examined. However, we can discriminate two major population groups. The first includes the populations of the North Aegean (Kavala, Alexandroupoli and Thessaloniki) and the second includes those of the South Aegean (North and South Crete and Cyclades). The phenetic tree of Mahalanobis distances showed that populations of picarel caught in neighbouring areas appear relevant.}, keywords = {Pisces}, author = {Vidalis, K. and Markakis, G. and Tsimenides, N.} } @article {13159, title = {Distribution patterns of Triglids (Pisces: Triglidae) on the cretan shelf (Greece), and their interspecific associations.}, journal = {Fisheries Research (Amst.)Fisheries Research (Amst.)}, volume = {15}, number = {1-2}, year = {1992}, pages = {83-103}, author = {Tsimenides, N. and Machias, A. and Kallianiotis, A.} } @article {13126, title = {Species distribution in the southern Aegean sea based on bottom-trawl surveys}, journal = {Aquatic Living ResourcesAquatic Living Resources}, volume = {12}, number = {3}, year = {1999}, pages = {167-175}, publisher = {Elsevier Science}, keywords = {Pisces}, author = {Tserpes, G. and Peristeraki, P. and Potamias, G. and Tsimenides, N.} } @article {13127, title = {Greek swordfish fishery; some trends in the size composition of the catches.}, journal = {FAO Fisheries ReportFAO Fisheries Report}, volume = {494}, year = {1992}, pages = {128-145}, author = {Tserpes, G. and Peristeraki, P. and Tsimenides, N.} } @article {13128, title = {Greek swordfish fishery: Some trends in the size composition of the catches.}, volume = {40}, number = {1}, year = {1993}, note = {Collective volume of scientific papers. International Commission for the Conservation of Atlantic Tunas/Recueil de documents scientifiques. Commission internationale pour la Conservation des Thonid{\'e}s de l{\textquoteright}Atlantique/Colecci{\'o}n de documentos cientificos. Comisi{\'o}n internacional para la Conservacion del At{\'u}n Atl{\'a}ntico}, pages = {137-140}, author = {Tserpes, G. and Peristeraki, P. and Tsimenides, N.} } @article {13129, title = {Greek swordfish fishery: some trends in the size composition of the catches.}, journal = {FAO Fisheries ReportFAO Fisheries Report}, volume = {494}, year = {1994}, note = { [Rapport. CGPM-CICTA Consultation d{\textquoteright}Experts sur les Stocks de Grands Pelagiques dans la Region M{\'e}diterran{\'e}enne.] Report. GFCM-ICCAT Expert Consultation on Stocks of Large Pelagic Fishes in the Mediterranean Area = Rapport. CGPM-CICTA Consultation d{\textquoteright}Experts sur les Stocks de Grands Pelagiques dans la Region M{\'e}diterran{\'e}enne.}, pages = {146-154}, author = {Tserpes, G. and Peristeraki, P. and Tsimenides, N.} } @article {13132, title = {Evaluation of growth rate differences in populations of Sardina pilchardus (Walbaum, 1792) (Clupeidae) from the Aegean and Ionian Seas.}, journal = {CybiumCybium}, volume = {15}, number = {1}, year = {1991}, pages = {15-22.}, keywords = {Pisces}, author = {Tserpes, G. and Tsimenides, N.} } @article {13133, title = {Age, growth and mortality of Serranus cabrilla (Linnaeus, 1758) on the Cretan shelf}, journal = {Fisheries ResearchFisheries Research}, volume = {51}, number = {1}, year = {2001}, pages = {27-34}, publisher = {Elsevier Science}, keywords = {Pisces}, author = {Tserpes, G. and Tsimenides, N.} } @article {12154, title = {Genetic differences between populations of sardine, Sardina pilchardus, and anchovy, Engraulis encrasicolus, in the Aegean and Ionian Seas.}, journal = {Journal of Fish BiologyJournal of Fish Biology}, volume = {35}, number = {3}, year = {1989}, pages = {417-437.}, keywords = {Pisces}, author = {Spanakis, E. and Tsimenides, N. and Zouros, E.} } @article {12086, title = {Fluctuating asymmetry in the otoliths of larval anchovy Engraulis encrasicolus and the use of developmental instability as an indicator of condition in larval fish.}, journal = {Marine Ecology Progress SeriesMarine Ecology Progress Series}, volume = {151}, number = {1-3}, year = {1997}, pages = {191-203}, author = {Somarakis, S. and Kostikas, I. and Peristeraki, N. and Tsimenides, N.} } @article {12087, title = {Fluctuating asymmetry in the otoliths of larval fish as an indicator of condition. Justification and preliminary field evidence.}, journal = {Fisheries Society of the British IslesFisheries Society of the British Isles}, year = {1997}, pages = {50pp.}, author = {Somarakis, S. and Kostikas, I. and Tsimenides, N.} } @article {12090, title = {Multispecies ichthyoplankton associations in epipelagic species: is there any intrinsic adaptive function}, journal = {Belgian Journal of ZoologyBelgian Journal of Zoology}, volume = {130}, number = {1}, year = {2000}, pages = {125-129}, keywords = {Pisces}, author = {Somarakis, S. and Maraveya, E. and Tsimenides, N.} } @article {9033, title = {Mitochondrial DNA phylogeny and the reconstruction of the population history of a species: The case of the European anchovy (Engraulis encrasicolus).}, journal = {Molecular Biology and EvolutionMolecular Biology and Evolution}, volume = {13}, number = {1}, year = {1996}, pages = {178-190}, abstract = {Analysis of mitochondrial DNA restriction fragment length polymorphism in European anchovy (Engraulis encrasicolus) revealed a large number of mitotypes that form two distinct clusters (phylads). Phylad A consists of one common mitotype and many rare secondary mitotypes that are one mutational step removed from the main type. Nucleotide diversity and number of homoplasious changes are low. Phylad B has a complex pattern of mitotype connectedness, high nucleotide diversity, and a large number of homoplasious changes. It is suggested that the two phylads evolved in isolation from each other and that present coexistence is the result of a secondary contact. Moreover, phylad A has a "star" phylogeny, which suggests that it has evolved in a population that experienced a drastic bottleneck followed by an explosion of size. Phylad A is practically the only phylad present in the Black Sea, with its frequency dropping to 85\% in the northern Aegean. and to 40\% in the rest of Mediterranean and the Bay of Biscay. The Black Sea is, therefore, the most likely place of origin of phylad A. Molecular data are consistent with a population bottleneck in the Black Sea during the last glaciation event and a subsequent exit of phylad A with the outflow into the Aegean following the ice melting. Phylogenetic analysis of anchovy mtDNA provides a reconstruction of population history in the Mediterranean, which is consistent with the geological information.}, keywords = {Pisces}, author = {Magoulas, A. and Tsimenides, N. and Zouros, E.} } @proceedings {9032, title = {Genetic structure of swordfish (Xiphias gladius) populations of the Mediterranean and the eastern side of the Atlantic: Analysis by mitochondrial DNA markers.}, year = {1993}, month = {17-23 Sep 1992}, pages = {128-145}, publisher = {FAO Fisheries Report Rome (Italy)}, address = {Iraklion (Greece)}, abstract = {Restriction site polymorphism of mitochondrial DNA (mtDNA) was score in threesamples of swordfish (Xiphias gladius) from the Mediterranean and in two samples from the eastern Atlantic Ocean. Using two restriction endonuclei (PvuII, EcoRV), four composite restriction patterns (genotypes) were revealed. All four genotypes were present in both seas but in different frequencies. The three Mediterranean samples (Greece, Italy, Spain) did not differ significantly from each other in their genotypic frequencies. There was, however, a very significant difference between the two Atlantic samples. The samples from Tarifa (just off the Strait of Gibraltar) did not differ from the Mediterranean samples, but the sample from the Gulf of Guinea differed greatly from all other samples (Mediterranean and Tarifa). These observations suggest the existence of one homogeneous stock in the Mediterranean different from that found in the eastern tropical Atlantic. The similarity of the sample from Tarifa with those from the Mediterranean is consistent with the view that the Strait of Gibraltar does not restrict the movement of swordfish between the Atlantic and the Mediterranean.}, author = {Magoulas, A. and Kotoulas, G. and de la Serna, J. M. and De Metrio, G. and Tsimenides, N. and Zouros, E.} } @article {8966, title = {Sizes of discarded commercial species in the eastern-central Mediterranean Sea}, journal = {Fisheries ResearchFisheries Research}, volume = {66}, number = {2-3}, year = {2004}, note = {Cited By (since 1996): 3Export Date: 5 September 2006Source: ScopusReferences: Allen, M., Kilpatrick, D., Armstrong, M., Briggs, R., Perez, N., Course, G., Evaluation of sampling methods to quantify discarded fish using data collected during discard project EC 95/094 by Northern Ireland, England and Spain (2001) Fish. Res., 49, pp. 241-254; Alverson, D.L., Freeberg, M.H., Pope, J.G., Murawski, S.A., A global assessment of fisheries bycatch and discard (1994) FAO. Fish. Tech. Pap., 339, p. 233; Carbonell, A., Martin, P., De Ranieri, S., Discards of the western Mediterranean trawl fleets (1998) Rapp. Commun. Int. Mer. Medit., 35, pp. 392-393; Chen, Y., Gordon, G.N.G., Assessing discarding at sea using a length-structured yield-per-recruit model (1997) Fish. Res., 30, pp. 43-55; D{\textquoteright}Onghia, G., Tursi, A., Basanisi, M., Mastrototaro, F., Commercial trawling, discards and recruitment from a fishery of the north-western Ionian Sea (1997) Biol. Mar. Medit., 4 (1), pp. 291-297; D{\textquoteright}Onghia, G., Carlucci, R., Maiorano, P., Panza, M., Discards from deep-water bottom trawling in the eastern-central Mediterranean Sea and effects of mesh size changes (2003) Deep-sea Fisheries Symposium, , Havana, Cuba, September 2001. in press; Hall, S.J., (1999) The Effects of Fishing on Marine Ecosystems and Communities, 274p. , Blackwell Science, London; Jennings, S., Kaiser, M.J., The effects of fishing on marine ecosystems (1998) Adv. Mar. Biol., 34, pp. 201-352; MacHias, A., Vassilopoulou, V., Vatsos, D., Bekas, P., Kallianiotis, A., Papaconstantinou, C., Tsimenides, N., Bottom trawl discards in the N.E. Mediterranean Sea (2001) Fish. Res., 53, pp. 181-195; McCullagh, P., Nedler, J.A., (1989) Generalized Linear Models, 511p. , Chapman and Hall/CRC, London; Petrakis, G., Stergiou, K.I., Size selectivity of diamond and square mesh codends for four commercial Mediterranean fish species (1997) ICES J. Mar. Sci., 54, pp. 13-23; Ragonese, S., Zagra, M., Di Stefano, L., Bianchini, M.L., Effect of codend mesh size on the performance of the deep-water bottom trawl used in the red shrimp fishery in the Strait of Sicily (Mediterranean Sea) (2001) Hydrobiologia, 449, pp. 279-291; Smirniotis, E., Statistical report on landing in auction sites (1998) Fish. News (Athens), 208, pp. 85-88; Stergiou, K.I., Economidis, P., Sinis, A., Sex ratio, spawning season and size at maturity of red bandfish in western Aegean Sea (1996) J. Fish. Biol., 49, pp. 561-572; Stergiou, K.I., Christou, E.D., Georgopoulos, D., Zenetos, A., Souvermesoglou, C., Hellenic Seas: Physics, chemistry, biology and fisheries (1997) Oceanogr. Mar. Biol. Ann. Rev., 35, pp. 415-538; Stergiou, K.I., Economou, A., Papaconstantinou, C., Tsimenides, N., Kavadas, S., Estimates of discards in the Hellenic commercial trawl fishery (1998) Rapp. Commun. Int. Mer. Medit., 35, pp. 490-491; Stratoudakis, G., Fryer, R., Cook, R., Pierce, G., Fish discarded from Scottish demersal vessels: Estimators of total discards and annual estimates for targeted gadoids (1999) ICES J. Mar. Sci., 56, pp. 592-605; Tursi, A., Matarrese, A., D{\textquoteright}Onghia, G., Maiorano, P., Panza, M., Sintesi delle ricerche sulle risorse demersali del Mar Ionio (da Capo d{\textquoteright}Otranto a Capo Passero) realizzate nel periodo 1985-1997 (1998) Biol. Mar. Medit., 5 (3), pp. 120-129; Vassilopoulou, V., Papaconstantinou, C., Discarding at sea by commercial trawlers in Greek waters (1998) Rapp. Proc. Verb. Reun., 35 (2), pp. 502-503.}, month = {2004///}, pages = {213-222}, abstract = {Discard practices of trawlers in three main fishing areas in the Ionian Sea (eastern and western coast) and the Cyclades Islands (Aegean Sea) were considered using data obtained on board representative commercial vessels over five consecutive years (786 hauls). The length at which 50\% of the individuals were discarded (defined as discard size) was estimated for 29 species using logistic regression. In addition the lengths at which 25 and 75\% of individuals were estimated. The discard size seems to be a good measurement to study discarding, to compare differences between areas and to investigate the discarding procedure in relation to minimum landing size. The different cod end mesh size used in Greece and Italy (28 and 40mm, respectively) has no impact on the discarded sizes of the species, because the skippers tended to retain all marketable species and size (legal or not). In contrast to this procedure, the estimated L50s were very close to the legal sizes in the most cases. The minimum landing size seems to be an effective technical measure in Mediterranean fisheries only in combination with spatial and temporal prohibitions due to the numerous landing sizes that make the monitoring of landings by the authorities very difficult. The estimated discard sizes were probably affected by how strict the authorities were in monitoring the landings, the market demand of the species and other socio-economic aspects of fisheries. {\textcopyright} 2003 Elsevier B.V. All rights reserved.}, keywords = {Discarding sizes, discards, Mediterranean trawl species, Pisces}, author = {Machias, A. and Maiorano, P. and Vassilopoulou, V. and Papaconstantinou, C. and Tursi, A. and Tsimenides, N.} } @article {8968, title = {Bathymetric distribution and movements of red mullet Mullus surmuletus.}, journal = {Marine Ecology Progress SeriesMarine Ecology Progress Series}, volume = {166}, year = {1998}, pages = {247-257}, author = {Machias, A. and Somarakis, S. and Tsimenides, N.} } @article {8969, title = {Ring formation on otoliths and scales of Pagrus pagrus: a comparative study}, journal = {Journal of Fish BiologyJournal of Fish Biology}, volume = {52}, number = {2}, year = {1998}, pages = {350-361}, publisher = {Blackwell Synergy}, keywords = {Pisces}, author = {Machias, A. and Tsimenides, N. and Kokokiris, L. and Divanach, P.} } @article {8970, title = {Bottom trawl discards in the northeastern Mediterranean Sea}, journal = {Fisheries ResearchFisheries Research}, volume = {53}, number = {2}, year = {2001}, pages = {181-195}, publisher = {Elsevier Science}, keywords = {Pisces}, author = {Machias, A. and Vassilopoulou, V. and Vatsos, D. and Bekas, P. and Kallianiotis, A. and Papaconstantinou, C. and Tsimenides, N.} } @article {8405, title = {Age, growth and feeding habits of the brown comber Serranus hepatus (Linnaeus, 1758) on the Cretan shelf.}, journal = {Estuarine, Coastal and Shelf ScienceEstuarine, Coastal and Shelf Science}, volume = {46}, number = {5}, year = {1998}, pages = {723-732}, author = {Labropoulou, M. and Tserpes, G. and Tsimenides, N.} } @article {8396, title = {Habitat selection and diet of juvenile red porgy, Pagrus pagrus (Linnaeus, 1758)}, journal = {Fishery BulletinFishery Bulletin}, volume = {97}, number = {3}, year = {1999}, note = {Cited By (since 1996): 6Export Date: 6 September 2006Source: ScopusReferences: Azeta, M., Ikemoto, R., Azuma, M., Diurnal activity rhythms in 0-group red sea bream, Pagrus major (1980) Bull. 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Syst., 15, pp. 393-425; Werner, E.E., Gilliam, J.F., Hall, F., Mittelbach, G.G., An experimental test of the effects of predation risk on habitat use in fish (1983) Ecology, 64, pp. 1540-1548; Werner, E.E., Hall, D.J., Ontogenetic habitat shifts in bluegill: The foraging-predation risk trade-off (1988) Ecology, 69, pp. 1352-1366. , Biostatistical analysis, 2nd ed. Prentice-Hall, Englewood Cliffs, NJ, 718 p.}, month = {1999///}, pages = {495-507}, abstract = {The patterns of distribution and feeding habits of juvenile red porgy, Pagrus pagrus, were studied for fish collected in experimental trawl surveys carried out along the Cretan continental shelf over a period of four years. Abundance increased significantly in shallow waters, with a maximum between 20 and 50 m for all seasons, negatively correlated to depth and positively correlated to temperature. Patterns of bathymetric distribution were similar for all sizes of juvenile red porgy, varying little among seasons. The fact that no specimens larger than 219 mm FL were caught in the trawlable fishing grounds indicates that larger individuals aggregated over hardbottom areas that could not be sampled by trawling. Feeding intensity varied among the size classes of fish examined. Stomach-content analysis revealed that juvenile red porgy are carnivorous, feeding mainly on decapods. Diet composition did not vary seasonally; decapods were the most important prey throughout the year. However, the composition of the prey consumed varied considerably with predator size, coupled with differences in mean prey sizes found in each size class. Feeding rates of juveniles in terms of both feeding intensity and amount of food consumed were high and increased with fish size. The Cretan continental shelf habitat offers increased growth rate, reduced predation risk, and increased food abundance to juveniles and therefore they direct energy entirely into somatic growth. Juvenile red porgy appeared to be a separate unit, from a management as well as from an ecological point of view. Habitat segregation is of importance; juvenile specimens were differentiated from mature fish on the basis of their selection of bottom type and prey and to a lesser extent by depth.}, keywords = {Pisces}, author = {Labropoulou, M. and Machias, A. and Tsimenides, N.} } @article {7959, title = {Marked mitochondrial DNA differences between Mediterranean and Atlantic populations of the swordfish, Xiphias gladius.}, journal = {Molecular EcologyMolecular Ecology}, volume = {4}, number = {4}, year = {1995}, pages = {473-481}, abstract = {Restriction analysis of mitochondrial DNA (mtDNA) from 204 individuals of swordfish (Xiphias gladius) revealed no differentiation among samples from three sites in the Mediterranean Sea (Greece, Italy, Spain), but a high degree of differentiation between Mediterranean samples and a sample from the Gulf of Guinea. A fifth sample from the Atlantic side of the Straits of Gibraltar (Tarifa) consisted mostly of mitotypes that are common in the Mediterranean, but contained several of mtDNA types of the Guinea sample not found in the Mediterranean. We conclude that, in spite of free migration of swordfish across the Straits of Gibraltar, little genetic exchange occurs between the populations inhabiting the Mediterranean Sea and the tropical Atlantic ocean. This is the first evidence of genetic differentiation among geographic populations of this highly mobile species that supports a world-wide fishery.}, keywords = {Pisces}, author = {Kotoulas, G. and Magoulas, A. and Tsimenides, N. and Zouros, E.} }