@article {7467,
	title = {Seasonal population dynamics of <i>Octopus vulgaris </i>in the eastern Mediterranean},
	journal = {ICES Journal of Marine ScienceICES Journal of Marine Science},
	volume = {63},
	number = {1},
	year = {2006},
	note = {Export Date: 4 September 2006Source: ScopusReferences: Belcari, P., Cuccu, D., Gonza?lez, M., Srairi, A., Vidoris, P., Distribution and abundance of Octopus vulgaris Cuvier, 1797 (Cephalopoda: Octopoda) in the Mediterranean Sea (2002) Scientia Marina, 66, pp. 157-166; Blackman, R.B., Tukey, J., (1958) The Measurement of Power Spectral from the Point of View of Communication Engineering, , Dover New York; Bloomfield, P., (1976) Fourier Analysis of Time Series: An Introduction, , Wiley New York; Caswell, H., (2001) Matrix Population Models: Construction, Analysis, and Interpretation, , Sinauer Associates Sunderland, USA; Fao, (2003) Fisheries Global Information System (FIGIS). World Wide Web Electronic Database, , (http://www.fao.org/fi/figis/index.jsp); Gonc?alves, J.M., Biology and exploitation of Octopus vulgaris Cuvier, 1797 (Mollusca: Cephalopoda) (1991) ICES CM 1991/K, p. 11; Guerra, A., Spatial distribution pattern of Octopus vulgaris (1981) Journal of Zoology, 195, pp. 133-146; Hatanaka, H., Studies on the fishery biology of common octopus off the Northwest coast of Africa (1979) Bulletin of the Far Seas Fisheries Research Laboratory, 17, pp. 13-124; Hernandez-Garcia, V., Hernandez-Lopez, J.L., Castro, J.J., The octopus (Octopus vulgaris) in the small-scale trap fishery off the Canary Islands (Central-East Atlantic) (1998) Fisheries Research, 35, pp. 183-189; Herna?ndez-Garci?a, V., Herna?ndez-Lo?pez, J.L., Castro-Hdez, J.J., On the reproduction of Octopus vulgaris off the coast of the Canary Islands (2002) Fisheries Research, 57, pp. 197-203; Herna?ndez-Lo?pez, J.L., Castro-Herna?ndez, J.J., Herna?ndez-Garci?a, V., Age determined from the daily deposition of concentric rings on common octopus (Octopus vulgaris) beaks (2001) Fishery Bulletin US, 99, pp. 679-684; Itami, K., Izawa, Y., Maeda, S., Nakai, K., Notes on the laboratory culture of the octopus larvae (1963) Bulletin of the Japanese Society of Scientific Fisheries, 29, pp. 514-520; Katsanevakis, S., (2004) Ecology of Octopus Vulgaris, 100p. , PhD thesis, National and Kapodistrian University of Athens, Athens; Katsanevakis, S., Verriopoulos, G., Den ecology of Octopus vulgaris Cuvier, 1797, on soft sediment: Availability and types of shelter (2004) Scientia Marina, 68, pp. 147-157; Katsanevakis, S., Verriopoulos, G., Abundance of Octopus vulgaris on soft sediment (2004) Scientia Marina, 68, pp. 553-560; Mangold, K., Octopus vulgaris (1983) Cephalopod Life Cycles, Volume I: Species Accounts, pp. 335-364. , P.R. Boyle Academic Press New York; Mangold, K., v Boletzky, S., New data on reproductive biology and growth of Octopus vulgaris (1973) Marine Biology, 19, pp. 7-12; Nixon, M., Changes in body weight and intake of food by Octopus vulgaris (1966) Journal of Zoology, 150, pp. 1-9; Quetglas, A., Alemany, F., Carbonell, A., Merella, P., Sanchez, P., Biology and fishery of Octopus vulgaris Cuvier, 1797, caught by trawlers in Mallorca (Balearic Sea, Western Mediterranean) (1998) Fisheries Research, 36, pp. 237-249; Sanchez, P., Obarti, R., The biology of Octopus vulgaris caught with clay pots on the Spanish Mediterranean coast (1993) Recent Advances in Cephalopod Fisheries Biology, pp. 477-487. , T. Okutani R.K. O{\textquoteright}Dor T. Kubodera Tokai University Press Tokyo; Whitaker, J.D., Delancey, L.B., Jenkins, J.E., Aspects of the biology and fishery potential for Octopus vulgaris off the coast of South Carolina (1991) Bulletin of Marine Science, 49, pp. 482-493; Wood, S.N., Inverse problems and structured-population dynamics (1997) Structured-population Models in Marine, Terrestrial and Freshwater Systems, pp. 555-586. , S. Tuljapurkar H. Caswell Chapman and Hall New York; Zar, J.H., (1996) Biostatistical Analysis, , Prentice Hall New Jersey.},
	month = {2006///},
	pages = {151-160},
	abstract = {The population density of Octopus vulgaris was measured by visual census with scuba diving in coastal areas in Greece (eastern Mediterranean). A time-variant, stage-classified, matrix population model was developed to interpret the seasonal variation of octopus stage densities and to estimate several life cycle parameters. An annual and a semi-annual periodic cycle were found in the stage densities. A main peak of benthic settlement was observed during summer and a secondary, irregular one during late autumn. Two spawning peaks were estimated, a main one during late winter-spring and a secondary one during late summer-early autumn. More than 50\% of the just-settled individuals will eventually die after 3 months. Mortality rate declines, as individuals grow larger, reaches a minimum approximately 6 months after settlement, and then grows again probably because of terminal spawning. The life expectancy of recently settled individuals (<50 g) during their summer peak is approximately 5 months. The lifespan of the common octopus is estimated to be between 12 and 15 months. The octopuses{\textquoteright} mean specific growth rates ({\textpm}s.d.) in their natural environment were 1.61 {\textpm} 0.30 d -1 for 50-200 g individuals and 1.19 {\textpm} 0.31 d-1 for 200-500 g individuals. {\textcopyright} 2005 International Council for the Exploration of the Sea. Published by Elsevier Ltd. All rights reserved.},
	keywords = {abundance, growth, Matrix population model, Mollusca Cephalopoda, mortality, octopus, Population dynamics, Seasonal variation, Settlement, spawning},
	author = {Katsanevakis, S. and Verriopoulos, G.}
}
