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Reproductive traits and seasonal variability of Merluccius merluccius from the Tunisian coast

Published online by Cambridge University Press:  01 May 2014

Widien Khoufi ,
Rosalia Ferreri ,
Héla Jaziri ,
Safouène El Fehri ,
Antonella Gargano ,
Salvatore Mangano ,
Sadok Ben Meriem ,
Mohamed Salah Romdhane ,
Angelo Bonanno  and
Salvatore Aronica
...Show all authors
Widien Khoufi
Affiliation:
INSTM (National Institute of Sciences and Marine Technologies), Port La Goulette, 2060 Tunis, Tunisia
Rosalia Ferreri
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
Héla Jaziri
Affiliation:
INSTM (National Institute of Sciences and Marine Technologies), Port La Goulette, 2060 Tunis, Tunisia
Safouène El Fehri
Affiliation:
INSTM (National Institute of Sciences and Marine Technologies), Port La Goulette, 2060 Tunis, Tunisia
Antonella Gargano
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
Salvatore Mangano
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
Sadok Ben Meriem
Affiliation:
INSTM (National Institute of Sciences and Marine Technologies), Port La Goulette, 2060 Tunis, Tunisia
Mohamed Salah Romdhane
Affiliation:
INAT (National Institute of Agronomies of Tunisia), 43, Avenue Charles Nicolle 1082, Tunis-Mahrajène, Tunisia
Angelo Bonanno
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
Salvatore Aronica
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
Simona Genovese
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
Salvatore Mazzola
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
Gualtiero Basilone*
Affiliation:
IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy
*
Correspondence should be addressed to: G. Basilone, IAMC-CNR (Institute for Coastal Marine Environment of the National Research Council), Capo Granitola Via del Mare, 3, 91021 Torretta Granitola, Campobello di Mazara, Sicily, Italy email: [email protected]
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Abstract

Merluccius merluccius is an economically and ecologically important demersal species inhabiting the Atlantic Ocean and the Mediterranean Sea; however, reproductive knowledge about this species, along the North African coast is still missing. Monthly samples were collected from November 2010 to October 2011 along the North Tunisian coast. Morphometric parameters were measured, and histological preparations of gonadic tissues provided detailed information on the reproductive biology. Ovary maturity data showed a protracted spawning season throughout the year, with peaks in January, April and August. In females of M. merluccius, seasonal variability in weight and length were noticed, with higher values in the first part of the study period (November–April) than from May to October. Analysing separately these two periods, significant relationships were observed between gonadic maturation indices and the somatic and gonadic indices, suggesting a seasonal differential use of energy intake. From November to May the fish alternate the use of their energy for body growth and reserves for later uses (i.e fat, muscle and liver mass) or for gonadic growth. From June to October the energy is converted mainly into gonad weight and less to somatic growth. The maturity ogives obtained by macroscopic and histological maturity staging methods showed significant differences; however, in both cases the length at first maturity estimates were around 29 cm. Nonetheless, when selecting the main spawning period, the L50 estimation was heavily reduced to 24 cm, suggesting careful attention in the selection of the samples to be used specially for fishery management purposes.

Keywords

Merluccius merlucciusreproductive potentialspawning seasonlength at first maturitybreeding strategy
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 94 , Issue 7 , November 2014 , pp. 1545 - 1556
Copyright
Copyright © Marine Biological Association of the United Kingdom 2014 

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References

REFERENCES

Absawy, M. and Abd., El-G. (2010) The reproductive biology and the histological and ultra structural characteristics in ovaries of the female Gadidae fish Merluccius merluccius from the Egyptian Mediterranean water. African Journal of Biotechnology 9, 2544–2559.Google Scholar
Adams, S.M. (1999) Ecological role of lipids in the health and success of fish populations. In Arts, M.T. and Wainman, B.C. (eds) Lipids in freshwater ecosystems. New York: Springer-Verlag, pp. 318–325.Google Scholar
Alegría-Hernandez, V. and Jukić, S. (1992) Abundance dynamics of the hake (Merluccius merluccius L.) from the middle Adriatic Sea. Bulletin de l'Institut Océanographique (Monaco) 11, 161.Google Scholar
Alvarez, P., Fives, J., Motos, L. and Santos, M. (2004) Distribution and abundance of European hake Merluccius merluccius (L.), eggs and larvae in the North East Atlantic waters in 1995 and 1998 in relation to hydrographic conditions. Journal of Plankton Research 26, 811–826.CrossRefGoogle Scholar
Anonymous (1986) Report of the ad hoc study group on hake. Lowestoft, 3–6 June 1986. ICES CM 1986/G: 93. 19 pp.Google Scholar
Basilone, G., Guisande, C., Patti, B., Mazzola, S., Cuttitta, A., Bonanno, A., Vergara, A.R. and Maneiro, I. (2006) Effect of habitat conditions on reproduction of the European anchovy (Engraulis encrasicolus) in the Strait of Sicily. Fisheries Oceanography 15, 271–280.CrossRefGoogle Scholar
Belhoucine, F., Bouderbala, M., Flower, R., Francour, P. and Boutiba, Z. (2012) Hermaphrodism case observed on the hake (Merluccius merluccius Linné, 1758) fished in Oran bay (south west Mediterranean sea). Journal de Sciences Halieutiques et Aquatiques 5, 171–176.Google Scholar
Biagi, F., Cesarini, A., Sbrana, M. and Viva, C. (1995) Reproductive biology and fecundity of Merluccius merluccius (Linnaeus, 1758) in the Northern Tyrrhenian Sea. Rapport de la Commission Internationale pour l'Exploration Scientifique de la Mer Méditerranée, 34, 1–23.Google Scholar
Bianchi, G., Carpenter, K.E., Roux, J.P., Molloy, F.J., Boyer, D. and Boyer, H.J. (1993) The living marine resources of Namibia. In FAO species identification field guide for fishery purposes. Rome: FAO, 250 pp.Google Scholar
Bouaziz, A., Sermoud, R., Djabalil, F. and Maurin, C. (1998) Reproduction du merlu Merluccius merluccius (Linnaeus, 1758) dans la région de Bou Ismaïl. CIHEAM Cahiers Options Méditerranéennes 35, 109–117.Google Scholar
Bouhlal, M. (1973) Le merlu des côtes nord de la Tunisie: Etude économique et biologique. Bulletin de l'Institut Océanographique de Pêche Salammbô 2, 579–603.Google Scholar
Bowman, R.E. (1984) Food of Silver hake, Merluccius bilinearis. Fishery Bulletin 82, 21–35.Google Scholar
Bozzano, A., Recasens, L. and Sartor, P. (1997) Diet of the European hake Merluccius merluccius (Pisces: Merluccidae) in the Western Mediterranean (Gulf of Lions). Scientia Marina 61, 1–8.Google Scholar
Brooks, S., Tyler, C.R. and Sumpter, P. (1997) Egg quality in fish: what makes a good egg? Reviews in Fish Biology and Fisheries 7, 387–416.CrossRefGoogle Scholar
Brown-Peterson, N.J., Wyanski, D.M., Saborido-Rey, F., Macewicz, B.J. and Lowerre-Barbieri, S.K. (2011) A standardized terminology for describing reproductive development in fishes. Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (online serial) 3, 52–70.CrossRefGoogle Scholar
Butler, G.L. and Rowland, S.J. (2009) Using underwater cameras to describe the reproductive behavior of the endangered eastern freshwater cod Maccullochella ikei. Ecology of Freshwater Fish 18, 337–349.CrossRefGoogle Scholar
Carpentieri, P., Colloca, F., Cardinale, M., Belluscio, A. and Ardizzone, G.D. (2005) Feeding habits of European hake (Merluccius merluccius) in the central Mediterranean Sea. Fishery Bulletin 103, 411–416.Google Scholar
Cartes, J.E., Rey, J., Lloris, D. and Gil de Sola, L. (2004) Influence of environmental variables on the feeding and diet of European hake (Merluccius merluccius) on the Mediterranean coasts. Journal of the Marine Biological Association of the United Kingdom 84, 831–835.CrossRefGoogle Scholar
Cartes, J.E., Hidalgo, M., Papiol, V., Massutì, E. and Moranta, J. (2009) Changes in the diet and feeding of the hake Merluccius merluccius at the shelf-break of the Balearic Islands: influence of the mesopelagic-boundary community. Deep-Sea Research I 56, 344–365.CrossRefGoogle Scholar
Casey, J. and Periero, J. (1995) European hake (Merluccius merluccius) in the north-east Atlantic. In Alheit, J. and Pitcher, T.J. (eds) Hake: biology, fisheries and markets. London: Chapman and Hall, pp. 125–147.CrossRefGoogle Scholar
Chelappa, S., Huntingford, F.A., Strang, R.H. and Thomson, R.Y. (1989) Annual variation in energy reserves in male three-spined stickleback, Gasterosteus aculeatus L (Pisces, Gasterosteidae). Journal of Fish Biology 35, 275–286.CrossRefGoogle Scholar
Cohen, D.M., Inada, T., Iwamoto, T. and Scialabba, N. (1990) FAO Species catalogue. Volume 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other Gadiform fishes known to date. (FAO Fisheries Synopsis 10(125)). Rome: FAO, 442 pp.Google Scholar
Coleman, F., Koenig, C.C. and Collins, A. (1996) Reproductive style of shallow water groupers (Pisces: Serranidae) in the eastern Gulf of Mexico and the consequences of fishing spawning aggregations. Environmental Biology of Fishes 47, 129–141.CrossRefGoogle Scholar
Colloca, F., Cardinale, M., Maynou, F., Giannoulaki, M., Scarcella, G., Jenko, K., Bellido, J.M. and Fiorentino, F. (2013) Rebuilding Mediterranean fisheries: a new paradigm for ecological sustainability. Fish and fisheries 14, 89–109.CrossRefGoogle Scholar
Costa, A.M. (2009) Macroscopic vs. microscopic identification of the maturity stages of female horse mackerel. ICES Journal of Marine Science 66, 509–516.CrossRefGoogle Scholar
Costa, A.M. (2013) Somatic condition, growth and reproduction of Hake, Merluccius merluccius L., on the Portuguese Coast. Marine Science 3, 12–30.Google Scholar
Courbin, N., Fablet, R., Mellon, C. and de Pontual, H. (2007) Are hake otolith macrostructures randomly deposited? Insights from an unsupervised statistical and quantitative approach applied to Mediterranean hake otoliths. ICES Journal of Marine Science 64, 1191–1201.Google Scholar
Crupkin, M., Montecchia, C.L. and Trucco, R.E. (1988) Seasonal variations in gonadosomatic index, liver-somatic index and actin-myosin ratio in actomyosin of mature hake (Merluccius hubbsi). Comparative Biochemistry and Physiology, Part A 89, 7–10.CrossRefGoogle Scholar
Domínguez-Petit, R. (2007) Study of reproductive potential of Merluccius merluccius on the Galician Shelf. PhD thesis. University of Vigo, Spain.Google Scholar
Domínguez-Petit, R., Korta, M., Saboridorey, F., Murua, H., Sainza, M. and Piñeiro, C. (2008) Changes in size at maturity of European hake Atlantic populations in relation with stock structure and environmental regimes. Journal of Marine Systems 71, 260–278.CrossRefGoogle Scholar
Domínguez-Petit, R., Saborido-Rey, F. and Medina, I. (2010) Changes of proximate composition, energy storage and condition of European hake (Merluccius merluccius, L. 1758) through the spawning season. Fisheries Resources 104, 73–82.CrossRefGoogle Scholar
El Habouz, H., Recasens, L., Kifani, S., Moukrim, A., Bouhaimi, A. and El Ayoubi, S. (2011) Maturity and batch fecundity of the European hake (Merluccius merluccius, Linnaeus, 1758) in the eastern central Atlantic. Scientia Marina 75, 447–454.CrossRefGoogle Scholar
Ferreri, R., Basilone, G., D'Elia, M., Traina, A., Saborido-Rey, F. and Mazzola, S. (2009) Validation of macroscopic maturity stages according to microscopic histological examination for European anchovy. Marine Ecology 30, 181–187.CrossRefGoogle Scholar
Fiorentino, F., Badalamenti, F., D'Anna, G., Garofalo, G., Gianguzza, P., Gristina, M., Pipitone, C., Rizzo, P. and Fortibuoni, T. (2008) Changes in spawning-stock structure and recruitment pattern of red mullet, Mullus barbatus, after a trawl ban in the Gulf of Castellammare (central Mediterranean Sea). ICES Journal of Marine Science 65, 1175–1183.CrossRefGoogle Scholar
Gancitano, V., Cusumano, S., Badalucco, C., Rizzo, P., Comparetto, G., Sabatella, E. and Fiorentino, F. (2007) Analisi di coorte in lunghezza del nasello (Merluccius merluccius L., 1758) (Pisces, Merluccidae) nello Stretto di Sicilia. Biologia Marina Mediterranea 14, 354–355.Google Scholar
Garofalo, G., Bel Hassen, M., Jarboui, O., Zgozi, S., Gristina, M., Fiorentino, F., Ragonese, S. and Camilleri, M. (2008). Preliminary results on spatial distribution of abundance indices, nursery and spawning areas of Merluccius merluccius and Mullus barbatus in the central Mediterranean. GCP/RER/010/ITA/MSM-TD 19: 24pp.Google Scholar
Gibbons, J.D. (1985) Nonparametric statistical inference. 2nd edition. New York: Marcel Dekker.Google Scholar
Heidinger, R.C. and Crawford, S.D. (1977) Effect of temperature and feeding rate on the liver–somatic index of the largemouth bass, Micropterus salmoides. Journal of the Fisheries Research Board of Canada 34, 633–638.CrossRefGoogle Scholar
Hilborn, R. and Walters, C.J. (1992) Quantitative fisheries stock assessment: choice, dynamics and uncertainty. London: Chapman and Hall.CrossRefGoogle Scholar
Hunter, J.R. and Leong, R. (1981) The spawning energetics of female northern anchovy, Engraulis mordax. Fishery Bulletin 79, 215–230.Google Scholar
Hunter, J.R., Lo, N.C.H. and Leong, R.J.H. (1985) Batch fecundity in multiple spawning fishes. NOAA Technical Report NMFS 36, 67–77.Google Scholar
Hunter, J.R. and Macewicz, B.J. (1985) Rates of atresia in the ovary of captive and wild northern anchovy, Engraulis mordax. Fishery Bulletin US 83, 119–136.Google Scholar
ICES (1990) Report of the Working Group on Fisheries Units in Sub-areas VII and VIII. ICES CM 1990/Assess: 23. 129 pp.Google Scholar
Joaquim, S., Matias, D., Lopes, B., Arnold, W.S. and Gaspar, M.B. (2008) The reproductive cycle of white clam Spisula solida (L.) (Mollusca: Bivalvia): implications for aquaculture and wild stock management. Aquaculture 281, 43–48.CrossRefGoogle Scholar
Khoufi, W., Elleboode, R., Bellamy, E., Ben Meriem, S., Romdhane, M.S. and Mahe, K. (2012) Croissance des juvéniles du merlu (Merluccius merluccius) des eaux septentrionales de la Tunisie a partir de l'analyse des microstructures des otolithes. Bulletin de la Société Zoologique de France 137, 245–256.Google Scholar
Lambert, Y., Dutil, J.D. and Ouellet, P. (2000) Nutritional condition and reproductive success in wild fish populations. In: Norberg B. et al. (eds) Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish. Bergen, Norway, July 4–9, 1999. Department of Fisheries and Marine Biology, University of Bergen: Bergen, pp. 77–84.Google Scholar
Lambert, Y., Yaragina, N.A., Kraus, G., Marteinsdottir, G. and Wright, P. (2003) Using environmental and biological indices as proxies for egg and larval production of marine fish. Journal of Northwest Atlantic Fishery Science 33, 115–159.CrossRefGoogle Scholar
Le Cren, E.D. (1951) The length–weight relationship and seasonal cycle in gonad weight and condition in the perch (Perca fluviatilis). Journal of Animal Ecology 20, 201–219.CrossRefGoogle Scholar
Lleonart, J. (2001) Impact of the fishery and environment on Merluccius merluccius recruitment in the northwestern Mediterranean. Final Report EU DG XIV. 672 pp.Google Scholar
Lloret, J., Demestre, M. and Sanchez-Pardo, J. (2008) Lipid (energy) reserves of European hake (Merluccius merluccius) in the North-Western Mediterranean. Life and Environment 58, 75–85.Google Scholar
Lloris, D., Matallanas, J. and Oliver, P. (2003) Merluzas del mundo (Familia Merluccidae). Catálogo comentado e ilustrado de las merluzas conocidas. In FAO Catálogo de Especies para los Fines de la Pesca 2. Rome: FAO, 57 pp.Google Scholar
Lucio, P., Murua, H. and Santurtun, M. (2000) Growth and reproduction of hake (Merluccius merluccius) in the Bay of Biscay during the period 1996–1997. Ozeanografika 3, 325–354.Google Scholar
Marshall, C.T., Yaragina, N.A., Lambert, Y. and Kjesbu, O.S. (1999) Total lipid energy as a proxy for total egg production by fish stocks. Nature 402, 288–290.CrossRefGoogle Scholar
Marshall, C.T., Yaragina, N.A., Adlandsvik, B. and Dolgov, A.V. (2000) Reconstructing the stock-recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential. Canadian Journal of Fisheries and Aquatic Sciences 57, 2433–2442.CrossRefGoogle Scholar
Marshall, C.T., O'Brien, L. and Tomkiewicz, J. (2003) Developing alternative indices of reproductive potential for use in fisheries management: case studies for stocks spanning an information gradient. Journal of Northwest Atlantic Fishery Science 33, 161–190.CrossRefGoogle Scholar
Martin, I. (1991) A preliminary analysis of some biological aspects of hake (Merluccius merluccius L. 1758) in the Bay of Biscay. International Council for the Exploration of the Sea document, CM/G, 54 pp.Google Scholar
Martín, P., Sartor, P. and Garcia-Rodriguez, M. (1999) Exploitation patterns of the European hake Merluccius merluccius, red mullet Mullus barbatus and striped red mullet Mullus surmuletus in the western Mediterranean. Journal of Applied Ichthyology 15, 24–28.CrossRefGoogle Scholar
McBride, R.S., Somarakis, S., Fitzhugh, G.R.Albert, A., Yaragina, N.A., Wuenschel, M.J., Alonso-Fernandez, A. and Basilone, G. (2013) Energy acquisition and allocation to egg production in relation to fish reproductive strategies. Fish and Fisheries. doi: 10.1111/faf.12043.Google Scholar
Mellon-Duval, C., de Pontual, H., Metral, L. and Quemener, L. (2010) Growth of European hake (Merluccius merluccius) in the Gulf of Lions based on conventional tagging. ICES Journal of Marine Science 67, 62–70.CrossRefGoogle Scholar
Metĭn, G., Türker Ĭlkyaz, A., and Kinacigĭl, H.T. (2008) Growth, mortality, and reproduction of poor cod (Trisopterus minutus Linn., 1758) in the central Aegean Sea. Turkish Journal Zoology 32, 43–51.Google Scholar
Morales-Nin, B. and Moranta, J. (2004) Recruitment and post-settlement growth of juvenile Merluccius merluccius on the western Mediterranean shelf. Scientia Marina 63, 399–409.CrossRefGoogle Scholar
Morris, R.J. and Culkin, F. (2000) Fish. In Ackman, R.G. (ed.) Marine biogenic lipids, fats and oils. Boca Raton, FL: CRC Press, pp. 850–900.Google Scholar
Mugahid, A.R. and. Hashem, M.T (1982) Some aspects of the fishery biology of hake Merluccius merluccius L. in the Libyan waters. Bulletin of the Institute of Oceanography and Fisheries 8, 145–162.Google Scholar
Murua, H. (2006) Reproductive fundamentals for the estimation of egg production of the European hake, Merluccius merluccius, in the Bay of Biscay. PhD thesis. Universidad del País Vasco, Spain.CrossRefGoogle Scholar
Murua, H. (2010) The biology and fisheries of European hake, Merluccius merluccius, in the north-east Atlantic. Advances in Marine Biology 58, 97–154.CrossRefGoogle ScholarPubMed
Murua, H., Kraus, G., Saborido-Rey, F., Witthames, P.R., Thorsen, A. and Junquera, S. (2003) Procedures to estimate fecundity of marine fish species relation to their reproductive strategy. Journal of Northwest Atlantic of Fisheries Science 33, 32–54.CrossRefGoogle Scholar
Murua, H. and Motos, L. (2006) Reproductive strategy and spawning activity of the European hake Merluccius merluccius (L.) in the Bay of Biscay. Journal of Fish Biology 69, 1288–1303.CrossRefGoogle Scholar
Okuda, N. (2001) The costs of reproduction to males and females of a paternal mouth brooding cardinal fish Apogon notatus. Journal of Fish Biology 58, 776–787.CrossRefGoogle Scholar
Orsi-Relini, L., Cappanera, M. and Fiorentino, F. (1989) Spatial temporal distribution and growth of Merluccius merluccius recruits in the Ligurian Sea, observations on the 0 group. Cybium 13, 263–270.Google Scholar
Pájaro, M. and Macchi, G.J. (2001) Distribución espacial y estimación de la talla de primera maduración del stock patagónico de merluza (Merluccius hubbsi) en el período de puesta Diciembre-abril 2000–2001. Technical Report. INIDEP (Argentina), 100/01, 14 pp.Google Scholar
Perez-Villarreal, B. and Howgate, P. (1987) Composition of European hake, Merluccius merluccius. Journal of the Science of Food and Agriculture 40, 347–356.CrossRefGoogle Scholar
Piñeiro, C. (2011) Edad y Crecimiento de la Merluza Europea Merluccius merluccius (Linnaeus, 1758) del Noroeste de la Península Ibérica: Evolución de un Paradigma. PhD thesis. University of Vigo, Spain.Google Scholar
Piñeiro, C. and Sainza, M. (2003) Age estimation, growth and maturity of the European hake Merluccius merluccius (Linnaeus, 1758) from Iberian Atlantic waters. ICES Journal of Marine Science 60, 1086–1102.CrossRefGoogle Scholar
Recasens, L., Chiericoni, V. and Belcari, P. (2008) Spawning pattern and batch fecundity of the European hake (Merluccius merluccius, Linnaeus, 1758) in the western Mediterranean. Scientia Marina 72, 721–732.CrossRefGoogle Scholar
Recasens, L., Lombarte, A., Morales-Nin, B. and Torres, G.J. (1998) Spatiotemporal variation in the population structure of the European hake in the NW Mediterranean. Journal of Fish Biology 53, 387–401.CrossRefGoogle Scholar
Reñones, O., Grau, A., Mas, X., Riera, F. and Saborido-Rey, F. (2010) Reproductive pattern of an exploited dusky grouper Epinephelus marginatus (Lowe, 1834) (Pisces, Serranidae) population in the western Mediterranean. Scientia Marina 74, 523–537.CrossRefGoogle Scholar
Rosenlund, G., Lund, B., Sandnes, K., Braekkan, O.R. and von der Decken, A. (1984) Muscle protein synthesis in vitro of saithe (Pollachius virens) correlated to growth and daily energy intake. Comparative Biochemistry and Physiology, Part B 77, 7–13.CrossRefGoogle Scholar
Saborido-Rey, F. and Kjesbu, O.S. (2009) Growth and maturation dynamics. In Dieckmann, U., Godø, O., Heino, R. and Mork, M. (eds) Fisheries-induced adaptive changes. Cambridge: Cambridge University Press, pp. 501–516.Google Scholar
Sarano, F. (1986) Cycle ovarien du merlu, Merluccius merluccius, poisson à ponte fractionnée. Revue des Travaux de l'Institut de Pêches Maritime 48, 65–76.Google Scholar
Sartor, P., Sbrana, M., Reale, B. and Belcari, P. (2003) Impact of the deep sea trawl fishery on demersal communities of the northern Tyrrhenian Sea (Western Mediterranean). Journal of Northwest Atlantic Fishery Science 31, 275–284.CrossRefGoogle Scholar
Shulman, G.E. (1974) Life cycles of fish. New York: John Wiley and Sons.Google Scholar
Somarakis, S., Palomera, I., Garcia, A., Quintanilla, L., Koutsikopoulos, C., Uriarte, A. and Motos, L. (2004) Daily egg production of anchova in European waters. ICES Journal of Marine Science 61, 944–958.CrossRefGoogle Scholar
Soriguer, F., Serna, S., Valverde, E, Hernando, J., Martín-Reyes, A., Soriguer, M., Pareja, A., Tinahones, F. and Esteva, I. (1997) Lipid, protein and caloric content of different Atlantic and Mediterranean fish, shellfish, and molluscs commonly eaten in the south of Spain. European Journal of Epidemiology 13, 451–463.CrossRefGoogle Scholar
Tomkiewicz, J., Morgan, M.J., Burnett, J. and Saborido-Rey, F. (2003) Available information for estimating reproductive potential of Northwest Atlantic groundfish stocks. Journal of Northwest Atlantic Fisheries Science 33, 1–21.CrossRefGoogle Scholar
Stergiou, K.I., Christou, E.D., Georgopoulous, D., Zenetos, A. and Souvermezoglou, C. (1997) The Hellenic seas: physics, chemistry, biology and fisheries. In Ansell, A.D., Gibson, R.N. and Barnes, M. (eds) Oceanography and marine biology: an annual review. London: UCL Press, pp. 415–538.Google Scholar
Stratoudakis, Y., Bernal, M. and Uriarte, A. (2004) The DEPM estimation of spawning-stock biomass for sardine and anchovy. ICES Cooperative Research Report 268(i), 91pp.Google Scholar
Tornaritis, M., Peraki, E., Georgulli, M., Kafatos, A., Charalambakis, G., Divanack, P., Kentouri, M., Yiannopoulos, S., Frenaritou, H. and Argyrides, R. (1993) Fatty acid composition and total fat content of eight species of Mediterranean fish. International Journal of Food Sciences and Nutrition 45, 135–139.Google Scholar
Trippel, E.A. (1999) Estimation of stock reproductive potential: history and challenges for Canadian Atlantic gadoid stock assessments. Journal of Northwest Atlantic Fishery Science 25, 61–81.CrossRefGoogle Scholar
Trippel, E.A. (2003) Estimation of male reproductive success of marine fishes. Journal of Northwest Atlantic Fishery Science 33, 81–113.CrossRefGoogle Scholar
Tyler, P. and Colow, P. (1985) Fish energetics. New perspectives. London, Sydney: Croom Helm.CrossRefGoogle Scholar
Vallisneri, M., Scapolatempo, M. and Tommasini, S. (2006) Reproductive biology of Merlangius merlangus L. (Osteichthyes, Gadidae) in the northern Adriatic Sea. Acta Adriatica 47, 159–165.Google Scholar
Velasco, F. and Olaso, I. (1998) European hake Merluccius merluccius (L., 1758) feeding the Cantabrian Sea: seasonal, bathymetric and length variations. Fisheries Research 38, 33–44.CrossRefGoogle Scholar
Vitale, H.M., Svedang, C. and Cardinale, M. (2006) Histological analysis invalidates macroscopically determined maturity ogives of the Kattegat cod (Gadus morhua) and suggests new proxies for estimating maturity status of individual fish. ICES Journal of Marine Science 63, 485–492.CrossRefGoogle Scholar
de Vlaming, V.L., Grossman, G. and Chapman, F. (1982) On the use of the gonosomatic index. Comparative Biochemistry and Physiology, Part A 73, 31–39.CrossRefGoogle Scholar
West, G. (1990) Methods of assessing ovarian development in fishes: a review. Australian Journal of Marine and Freshwater Research 41, 199–222.CrossRefGoogle Scholar
Wiegand, M.D. (1996) Composition, accumulation and utilization of yolk lipids in teleost fish. Reviews in Fish Biology and Fisheries 6, 259–286.CrossRefGoogle Scholar
WKMOG-ICES 2008. Report of the Workshop on maturity ogive estimation for stock assessment (WKMOG). International Council for the Exploration of the Sea, CM/ACOM, 33, 72 pp.Google Scholar
Wysokinski, A. (1986) Evaluation des stocks de merlus dans les divisions statistiques 34.1.3 et 34.3.1 du COPACE basée sur les données polonaises (1966–75), COPACE/PACE Series, 86/33. Rome: FAO, pp. 72–120.Google Scholar