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Influences of environmental variability on the population structure and distribution patterns of the short-fin squid Illex coindetii (Cephalopoda: Ommastrephidae) in the Eastern Ionian Sea

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Abstract

Illex coindetii is the most common benthic ommastrephid squid exploited by bottom trawl in the Mediterranean Sea. A recent study examining trends in population metrics based on data from the International Bottom Trawl Surveys in the Mediterranean (MEDITS) has shown an increasing trend in average lengths of I. coindetii sampled in the eastern Ionian Sea, suggesting that this is possibly due to the thermoaline circulation reversal and the warming of the entire water column in this area after 1998 because of the Eastern Mediterranean Transient (EMT). In this study, spatial and inter-annual variability of the population structure and the distribution patterns of I. coindetii in the eastern Ionian is investigated in relation to environmental characteristics. Datasets used include demographical and biological data derived from the MEDITS surveys carried out during the summers of 1994–2006 and environmental parameters obtained through CTD sampling and remotely sensed imagery. Analyses performed include descriptive methods like the length frequency analyses and GIS mapping of standardized densities, as well as habitat modelling of presence data for different life stages of I. coindetii (based on generalized additive models and maximum entropy). An increasing trend in frequency of occurrence and density indices for all life stages has been detected during the studied period, being more evident after 1999. At the same time a temporal shift in seasonal maturation was also evidenced, coinciding to the warming of eastern Ionian waters due to EMT effects. Spawning aggregations occurred steadily on the upper slope of the relatively more protected area west of the Kefalonia Island, extending also over the lower shelf of the Patraikos Gulf in summers with lower upwelling activity. The inter-annual variability observed in the location of main recruitment areas could be related to mechanisms affecting post-hatching dispersal during late winter and spring, when maximum intensity of surface mesoscale activity has been observed. Depth was found the principal variable associated with the distribution of I. coindetii in the study area. Anomalies of surface temperature and chlorophyll-a, as well as distances from coast and thermal fronts were also selected for the final set of response variables without, however, showing any clear trend particularly in the case of recruits. The results of this study highlight the importance of a more comprehensive study of both environmental processes and I. coindetii life history in the Ionian Sea, in order to improve the understanding of its dynamics and the links with environmental variability.

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References

  • Akaike, H., 1973. Information theory as an extension of the maximum likelihood principle. In Petrov, N. B. & F. Csaki (eds), Second International Symposium on Information Theory. Akademiai Kiado, Budapest.

    Google Scholar 

  • Anonymous, 1998. MEDITS. Manuel de protocols. Biologia Marina Mediterranea 5: 515–572.

    Google Scholar 

  • Arkhipkin, A. I., 1996. Geographical variation in growth and maturation of the squid Illex coindetii (Oegopsida. Ommastrephidae) off the North-West African coast. Journal of the Marine Biological Association of the United Kingdom 76: 1091–1106.

    Google Scholar 

  • Arkhipkin, A. I., P. Jereb & S. Ragonese, 2000. Growth and maturation in two successive seasonal groups of the short-finned squid, Illex coindetii from the Strait of Sicily (Central Mediterranean). ICES Journal of Marine Science 57: 31–41.

    Article  Google Scholar 

  • Arvanitidis, C., D. Koutsoubas, J.-P. Robin, J. Pereira, A. Moreno, M. M. Cunha, V. Valavanis & A. Eleftheriou, 2002. A comparison of the fishery biology of three Illex coindetii (Vérany 1839) (Cephalopoda: Ommastrephidae) populations from the European Atlantic and Mediterranean waters. Bulletin of Marine Science 71: 129–146.

    Google Scholar 

  • Augustin, N. H., M. A. Mugglestone & S. T. Buckland, 1996. An autologistic model for the spatial distribution of wildlife. Journal of Applied Ecology 33: 339–347.

    Article  Google Scholar 

  • Bakun, A. & J. Csirke, 1998. Environmental processes and recruitment variability. In Rodhouse, P. G., E. G Dawe & R. K. O’Dor (eds), Squid Recruitment Dynamics. The Genus Illex as a Model, the Commercial Illex Species and Influences on Variability. FAO Fisheries Technical Paper 376: 105–124.

  • Bertrand, J., L. Gil de Sola, C. Papaconstantinou, G. Relini & A. Souplet, 2000. An international bottom trawl survey in the Mediterranean: the MEDITS programme. In Bertrand, J. A. & G. Relini (eds), Demersal Resources in the Mediterranean. Actes de Colloques 26: 76–93.

  • Casotti, R., A. Landolfi, C. Brunet, F. D’Ortenzio, O. Mangoni, M. R. d’Alcala & M. Denis, 2003. Composition and dynamics of the phytoplankton of the Ionian Sea (Eastern Mediterranean). Journal of Geophysical Research Oceans 108: 8116.

    Google Scholar 

  • Ceriola, L., N. Ungaro & F. Toteda, 2006. Some information on the biology of Illex coindetii Verany, 1839 (Cephalopoda, Ommastrephidae) in the South-Western Adriatic Sea (Central Mediterranean). Fisheries Research 82: 41–49.

    Article  Google Scholar 

  • Clarke, M. R., 1966. A review of systematics and biology of oceanic squids. (Ommastrephidae). Advances Marine Biology 4: 91–300.

    Article  Google Scholar 

  • Cuccu, D., P. Jereb, S. Ragonese, N. Giovannini, S. Colella & A. Cau, 2008. On the abundance and spatial distribution of Illex coindetii and Eledone moschata in the Sardinian Seas (central-western Mediterranean): a preliminary and qualitative investigation with special attention to some environmental constraints. Bollettino Malacologico (in press).

  • Cunha, M. M. & A. Moreno, 1994. Recent trends in the Portuguese squid fishery. Fisheries Research 21: 231–241.

    Article  Google Scholar 

  • Drakopoulos, P. G. & A. Lascaratos, 1999. Modelling the Mediterranean Sea: climatological forcing. Journal of Marine Systems 20: 157–173.

    Article  Google Scholar 

  • Elith, J., C. H. Graham, R. P. Anderson, M. Dudik, S. Ferrier, A. Guisan, R. J. Hijmans, F. Huettmann, J. R. Leathwick, A. Lehmann, J. Li, L. G. Lohmann, B. A. Loiselle, G. Manion, C. Moritz, M. Nakamura, Y. Nakazawa, J. Mc. C. Overton, A. T. Peterson, S. J. Phillips, K. S. Richardson, R. Scachetti-Pereira, R. E. Schapire, J. Soberon, S. Williams, M. S. Wisz & N. E. Zimmermann, 2006. Novel methods improve prediction of species’ distributions from occurrence data. Ecography 29: 129–151.

    Article  Google Scholar 

  • ESRI, 1994. ARC Macro Language. Environmental Systems Research Institute Inc., Redlands CA, USA: 3–37.

    Google Scholar 

  • Fielding, A. H. & J. F. Bell, 1997. A review of methods for the assessment of prediction errors in conservation presence/absence models. Environmental Conservation 24: 38–49.

    Article  Google Scholar 

  • Friligos, N., A. Theocharis & D. Georgopoulos, 1985. Preliminary physical and chemical observations during summer 1980 on a silled embayment in the Ionian Sea. Vie Millieu 35: 115–125.

    Google Scholar 

  • Fryer, R. G., 1991. A model between haul variation in selectivity. ICES Journal of Marine Science 48: 281–290.

    Article  Google Scholar 

  • González, A. F. & A. Guerra, 1996. Reproductive biology of the shot-finned squid Illex coindetii (Cephalopoda: Ommastrephilae) of the Northeasten Atlantic. Sarsia 81: 107–118.

    Google Scholar 

  • González, A. F., B. G. Castro & A. Guerra, 1996. Age and growth of the shortfinned squid Illex coindetii in Galician waters (NW Spain) based on statolith analysis. ICES Journal of Marine Science 53:802–810.

    Article  Google Scholar 

  • González, A. F., M. Rasero & A. Guerra, 1994. Preliminary study of Illex coindetii and Todaropsis eblanae (Cephalopoda: Ommastrephidae) in northern Spanish Atlantic waters. Fisheries Research 21: 115–126.

    Article  Google Scholar 

  • Guerra, A., 1992. Mollusca, Cephalopoda. In Ramos, M. A. (ed.), Fauna Ibérica. Museo Nacional de Ciencias Naturales, CSIC Madrid: 327.

  • Guisan, A. & N. E. Zimmermann, 2000. Predictive habitat distribution models in ecology. Ecological Modelling 135: 147–186.

    Article  Google Scholar 

  • Hastie, T. J. & R. J. Tibshirani, 1990. Generalized Additive Models. Chapman & Hall, London: 335.

  • Henry, K., V. Denis & J.-P. Robin, 1998. Ommastrephid squids exploited by French trawlers: preliminary analysis of stock structure based on Southern Brittany landings. ICES CM1998/M: 24.

  • Hernández-García, V., 1991. Distribution of flying squids (Cephalopoda teuthoidea) in the CECAF area (Preliminary results). ICES CM1991/K: 24.

  • Hernández-García, V., 2002. Reproductive Biology of Illex coindetii and Tadaropsis eblanae (Cephalopoda: Ommastrephidae) off Northwest Africa (4°N, 35°N). Bulletin of Marine Science 71: 347–366.

    Google Scholar 

  • Iriondol, A., M. Santurtun & I. Artexte, 2007. The Basque cephalopod fishery in the northeasten Atlantic waters during the period 1994–2006. ICES CM2007/LRC: 15.

  • Jackson, G. D., 2004. Advances in defining the life histories of myopsid squid. Marine and Freshwater Research 55: 457–365.

    Article  Google Scholar 

  • Jereb, P., D. Massi, G. Norrito & F. Fiorentino, 2001. Preliminary observations of environmental effects on spatial distribution and abundance of Eledone cirrhosa and Illex coindetii in the Strait of Sicily (Central Mediterranean Sea). ICES CM2001/K: 34.

  • Jereb, P. & S. Ragonese, 1991. Distribution and reproductive biology of the squid Illex coindetii (Mollusca, Cephalopoda) in the Sicilian Channel. Bulletin of Marine Science 49: 664.

    Google Scholar 

  • Jereb, P. & S. Ragonese, 1995. An outline of the biology of the squid Illex coindetii in the Sicilian channel (Central Mediterranean). Journal of the Marine Biological Association of the United Kingdom 75: 373–390.

    Google Scholar 

  • Katagan, T., A. Salman & H. A. Benli, 1993. The cephalopod fauna of the Sea of Marmara. Israel Journal of Zoology 39: 255–261.

    Google Scholar 

  • Keitt, T., O. Bjornstad, P. Dixon & S. Citron-Pousty, 2002. Accounting for spatial pattern when modelling organism-environment interactions. Ecography 25: 616–625.

    Article  Google Scholar 

  • Krstulovic-Sifner, S., E. Lefkaditou, N. Ungaro, L. Ceriola, K. Osmani, S. Kavadas & N. Vrgoc, 2005. Composition and distribution of the cephalopod fauna in the eastern Adriatic and eastern Ionian Sea. Israel Journal of Zoology 51: 315–330.

    Article  Google Scholar 

  • Lefkaditou, E., 2006. Taxonomy and biology of Cephalopods in the North Aegean Sea. PhD thesis, University of Patras, Patras, Greece: 298.

  • Lefkaditou, E., S. Kavadas & C. Papaconstantinou, 2002. Cephalopod fisheries statistics in Greek waters (NE Mediterranean). ICES CM1999/G: 4.

  • Lefkaditou, Ε., C. Mytilineou, P. Maiorano & G. D’Onghia, 2003. Cephalopod species captured by deep-water exploratory trawling in the northeastern Ionian Sea. Journal of Northwest Atlantic Fisheries Science 31: 431–440.

    Google Scholar 

  • Lennon, J. J., 2000. Red-shifts and red herrings in geographical ecology. Ecography 23: 101–113.

    Article  Google Scholar 

  • Lu, C. C., 1973. Systematics and Zoogeography of the Squid Genus Illex (Oegopsida: Cephalopoda). Ph.D. Thesis, Memorial University of Newfoundland, Canada: 389.

  • Mallanote-Rizzoli, P., B. B. Manca, M. Ribera d’Alcala, A. Theocharis, A. Bergamasco, D. Bregant, G. Budillon, G. Civitarese, D. Georgopoulos, A. Michelato, E. Sansone, P. Scarazzato & E. Souvermezoglou, 1997. A synthesis of the Ionian Sea hydrography, circulation and water mass pathways during POEM-Phase I. Progress in Oceanography 39: 153–204.

    Article  Google Scholar 

  • Manca, B., 2000. Recent changes in dynamics of the Eastern Mediterranean affecting the water characteristics of the adjacent basins. In Briand, F. (ed.), The Eastern Mediterranean Transient. CIESM Workshop Series 10: 27–31.

  • Manca, B. B., L. Ursella & P. Scarazzato, 2002. New development of Eastern Mediterranean Circulation based on hydrological observations and current measurements. Marine Ecology 23: 237–257.

    Article  Google Scholar 

  • Mangold, K., 1987. Reproduction. In Boyle, P. R. (ed.), Cephalopod Life Cycles. Academic Press, London: 157–200.

    Google Scholar 

  • Mangold, K. & S. Boletzky, 1987. Cephalopodes. Méditeranée et mer Noire. Zone de Pêche 37: 633–714.

    Google Scholar 

  • Mazzocchi, M. G., D. Nervegna, G. D’Elia, I. D. Capua, L. Aguzzi & A. Boldrin, 2003. Spring mesozooplankton communities in the epipelagic Ionian Sea in relation to the Eastern Mediterranean Transient. Journal of Geophysical Research Oceans 108: C9.

    Google Scholar 

  • Moreno, A., J. Pereira, C. Arvanitidis, J.-P. Robin, D. Koutsoubas, C. Perales-Raya, M. M. Cunha, E. Balguerias & V. Denis, 2002. Biological variation of Loligo vulgaris (Cephalopoda: Loliginidae) in the eastern Atlantic and Mediterranean. Bulletin of Marine Science 71: 515–534.

    Google Scholar 

  • Olivier, F. & S. J. Wotherspoon, 2005. GIS-based application of resource selection functions to the prediction of snow petrel distribution and abundance in East Antarctica: comparing models at multiple scales. Ecological Modelling 189: 105–129.

    Article  Google Scholar 

  • Petrakis, G. & K. Stergiou, 1997. Size selectivity of diamond and square mesh cod ends for four commercial Mediterranean fish species. ICES Journal of Marine Science 54: 13–23.

    Article  Google Scholar 

  • Piatkowski, U., 1998. Modern target sampling techniques provide new insights into the biology of early life stages of pelagic cephalopods. Biologia Marina Mediterranea 5: 260–272.

    Google Scholar 

  • Phillips, S. J., R. P. Anderson & R. E. Schapire, 2006. Maximum entropy modelling of species geographic distributions. Ecological Modelling 190: 231–259.

    Article  Google Scholar 

  • Phillips, S. J., M. Dudik & R. E. Schapire, 2004. A maximum entropy approach to species distribution modelling. Proceedings of the 21st International Conference on Machine Learning. Banff, Canada.

  • Poulain, P., J. M. Leitz & P. Flament, 2000. Sea Surface Temperature in the Ionian Sea: satellite and drifter observations between May and October 1995. Aquatic Pollution and Environmental Quality: OS32A-14.

  • Pujol, M.-I. & G. Larnicol, 2005. Mediterranean sea eddy kinetic energy variability from 11 years of altimetric data. Journal of Marine Systems 58: 121–142.

    Article  Google Scholar 

  • Quetglas, A., A. Carbonell & P. Sanchez, 2000. Demersal continental shelf and upper slope cephalopod assemblages from the Balearic Sea (north-western Mediterranean). Biological aspects of some deep-sea species. Estuarine, Coastal and Shelf Science 50: 739–749.

    Article  Google Scholar 

  • R Development Core Team, 2005. R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria, http://www.R-project.org.

  • Ramfos, A., S. Isari, S. Somarakis, D. Georgopoulos, C. Koutsikopoulos & N. Fragopoulou, 2006. Mesozooplankton community structure in offshore and coastal of the Ionian Sea (Eastern Mediterranean) during mixed and stratified conditions. Marine Biology 150: 29–44.

    Article  Google Scholar 

  • Rochet, M.-J., V. M. Trenkel, L. Gil de Sola, C.-Y. Politou, G. Tserpes & J. A. Bertrand, 2007. Do population and community metrics tell the same story about recent changes in Northern Mediterranean fish communities? ICES CM2007/D: 16.

  • Roether, W., B. Klein, B. B. Manca, A. Theocharis & S. Kioroglou, 2007. Transient Eastern Mediterranean deep waters in response to the massive dense-water output of the Aegean Sea in the 1990s. Progress in Oceanography 74: 540–571.

    Article  Google Scholar 

  • Roper, C. F. E., C. C. Lu & M. Vecchione, 1998. A revision of the systematics and distribution of Illex species (Cephalopoda: Ommastrephidae). In Voss, N. A., M. Vecchione, R. B. Toll & M. J. Sweeney (eds), Systematics and Biogeography of Cephalopods. Smithsonian Contributions to Zoology 586: 405–423.

  • Sánchez P., 1995. Age and growth of Illex coindetii. ICES Marine Science Symposia 199:441–444.

    Google Scholar 

  • Sánchez, P., P. Belcari & P. Sartor, 1998a. Composition and spatial distribution of cephalopods in two north-western Mediterranean areas. South African Journal of Marine Science 20: 17–24.

    Google Scholar 

  • Sánchez, P., A. F. Gonzalez, P. Jereb, V. V. Laptikhovsky, K. M. Mangold, C. M. Nigmatulin & S. Ragonese, 1998b. Illex coindetii. In Rodhhouse, P. G., E. G. Dawe & R. K. O’Dor (eds), Squid Recruitment Dynamics. FAO Fisheries Technical Paper 376: 59–76.

  • Sánchez, P. & P. Martin, 1993. Population dynamics of the exploited cephalopod species of the Catalan Sea (NW Mediterranean). Scientia Marina 57: 153–159.

    Google Scholar 

  • Smith, W. H. F. & D. T. Sandwell, 1997. Global sea floor topography from satellite altimetry and ship depth soundings. Science 277: 1956–1962.

    Article  CAS  Google Scholar 

  • Souvermezoglou, E., 2003. The influence of thermoaline circulation variability in the Eastern Mediterranean on the distribution of the chemical parameters in the Ionian Sea (possible impact on the ecosystem). 7th Hellenic Symposium on Oceanography and Fisheries. Chersonissos, Abstracts volume: 107.

  • Souvermezoglou, E. & E. Krasakopoulou, 1999. The effect of physical processes on the distribution of nutrients and oxygen in the NW Levantine Sea. In Malanotte-Rizzoli, P. & V. N. Eremeev (eds), The Eastern Mediterranean as a laboratory Basin for the Assessment of Contrasting Ecosystems. NATO ARW Series. Kluwer Academic Publishers, Netherlands: 225–240.

    Google Scholar 

  • Stergiou, K. I., E. D. Christou, D. Georgopoulos, A. Zenetos & C. Souvermezoglou, 1997. In Ansell, A. D., R. N. Gibson & M. Barnes (eds), The Hellenic Seas: Physics, Chemistry, Biology and Fisheries. Oceanography and Marine Biology: Annual Review 1997. UCL Press: 415–538.

  • Theocharis, A., D. Georgopoulos, P. Karagevrekis, A. Iona, L. Perivoliotis & N. Charalambidis, 1992. Aegean influence in the deep layers of the Eastern Ionian Sea. Rapports Commision International Mer Méditerranée 33: 235.

    Google Scholar 

  • Theocharis, A., B. Klein, K. Nittis & W. Roether, 2002. Evolution and status of the Eastern Mediterranean Transient (1997–1999). Journal of Marine Systems 33–34: 91–116.

    Article  Google Scholar 

  • Valavanis, V. D., S. Georgakarakos & J. Haralabous, 1998. A methodology for GIS interfacing of marine data. Proceedings of GIS PLANET 98: International Conference and Exhibition on Geographic Information, Lisbon, Portugal, 7–11 September 1998. IMERSIVA CD-ROM.

  • Valavanis, V. D., A. Kapantagakis, I. Katara & A. Palialexis, 2004. Critical regions: a GIS-based model of marine productivity hotspots. Aquatic Sciences 66: 139–148.

    Article  Google Scholar 

  • Valavanis, V. D., I. Katara & A. Palialexis, 2005. Marine GIS: identification of mesoscale oceanic thermal fronts. International Journal of Geographical Information Science 19: 1131–1147.

    Article  Google Scholar 

  • Waluda, C. M., P. G. Rodhouse, G. P. Podesta, P. N. Trathan & G. J. Pierce, 2001. Surface oceanography of the inferred hatching grounds of Illex argentinus (Cephalopoda: Ommastrephidae) and influences on recruitment variability. Marine Biology 139: 671–679.

    Article  Google Scholar 

  • Wood, S. N., 2006. Generalized Additive Models. An Introduction with R. Chapman & Hall, London.

    Google Scholar 

  • Zuur, A. F., E. N. Ieno & G. M. Smith, 2007. Analysing Ecological Data. Springer Series: Statistics for Biology and Health, Springer.

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Acknowledgements

Andreas Palialexis and Panayota Cosmopoulos were supported by the EU FP6 Scientific Support to Policies Action EnviEFH (Environmental Approach to Essential Fish Habitat Designation).

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Essential Fish Habitat Mapping in the Mediterranean

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Lefkaditou, E., Politou, CY., Palialexis, A. et al. Influences of environmental variability on the population structure and distribution patterns of the short-fin squid Illex coindetii (Cephalopoda: Ommastrephidae) in the Eastern Ionian Sea. Hydrobiologia 612, 71–90 (2008). https://doi.org/10.1007/s10750-008-9490-1

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