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2010 | 40 | 2 |
Tytuł artykułu

Reproduction of the Egyptian sole, Solea aegyptiaca (Actinopterygii: Pleuronectiformes: Soleidae), from Port Said, Egypt, Mediterranean Sea

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Background. Understanding of reproduction of the Egyptian sole, Solea aegyptiaca, has been considered a major step toward understanding its population dynamics, especially in the eastern Mediterranean Sea. In Egypt this species has highly commercial value and it has recently been successfully bred in aquaculture, but more data on the reproductive biology is still needed. So, the present work aimed to study the population structure and the reproductive dynamics of S. aegyptiaca over an annual reproductive cycle. Materials and Methods. A total of 594 specimens of S. aegyptiaca were obtained from October 2004 to September 2005 in a monthly basis from the commercial catch. Sex ratio, age, and length at first maturity, gonado- somatic index, maturity stage, oocyte diameter, and fecundity were analysed in order to increase our knowledge on the reproductive dynamics of S. aegyptiaca. Results. The overall ratio between males and females was 1.0 : 1.15 and showed no significant deviation from the expected 1 : 1 ratio, males are dominant among small size, while females are dominant among larger size. Females attained their maturity at the length of about 15.0 cm. The reproductive activity of S. aegyptiaca took place between January and June with a peak on January, when the majority of oocyte growth (> 400 μm in diameter) occurred. Hydrated oocytes reach 1000 μm immediately before spawning. Absolute fecundity ranged from 9898 to 38505 and can be expressed as a function of total length. Conclusion. S. aegyptiaca is a winter spawner, and the female attains its maturity at 15.0 cm of total length. So, fishing should be prohibited during the period from January to June to conserve the existing stock of the target species. Regulations should also be directed to reduce the fishing potential of 18.0 cm total length. It is important to give each fish the chance to reproduce at least once in its lifetime.
Wydawca
-
Rocznik
Tom
40
Numer
2
Opis fizyczny
p.161-166,fig.,ref.
Twórcy
autor
  • Marine Science Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
autor
autor
Bibliografia
  • Albertine-Berhaut J. 1973. Biologie de stades juveniles de téleostéens mugilidae Mugil auratus Risso 1810, Mugil capito Cuvier 1829, et Mugil salines Risso 1810: I. Régime alimentaire. Aquaculture 2: 251–266. DOI: 10.1016/0044-8486(73)90158-0.
  • Bagenal T.B. 1971. Egg and early life history. Pp. 166–199. In: Bagenal T.B., Ricker W.E. (eds.) Methods of assessments of fish production in fresh waters. Blackwell Science Publishers, Oxford.
  • Bal D.V., Rao K.V. 1984. Marine fisheries. Tata Mc Graw-Hill, New Delhi.
  • Bauchot M.L. 1987. Poissons osseux. Pp. 891–1421. In: Fisher W., Bauchot M.L., Schneider M. (eds.) Fiches FAO d’identification pour les Besoins de la Pêche (rev. 1). Méditerranée et Mer Noire. Zone de Pêche 37. Vol. II. FAO, Rome.
  • Gabr H.R., Ahmed A.I., Haraz M. 2003. Aquaculture potential of the flatfish Solea vulgaris in Egypt. Journal Of Egyptian Academic Socity for Environmental Development, Aquaculture B 4 (2): 157–168.
  • García-López Á., Fernández-Pasquier V., Couto E., Canario A.V.M., Sarasquete C., Martínez-Rodríguez G. 2006. Testicular development and plasma sex steroid levels in cultured male Senegalese sole Solea senegalensis Kaup. General and Comparative Endocrinology 147 (3): 343–351. DOI: 10.1016/j.ygcen.2006.02.003.
  • Horwood J.W., Walker G.M. 1990. Determinacy of fecundity in sole (Solea solea) from Bristol Channel. Journal of Marine Biological Association of the United Kingdom 70 (4): 803–813. DOI: 10.1017/S0025315400059075.
  • Mehanna S.F. 2007. Stock assessment and management of the Egyptian sole Solea aegyptiaca Chabanaud, 1927 (Osteichthyes: Soleidae), in the southeastern Mediterranean, Egypt. Turkish Journal of Zoology 31: 379–388.
  • Morgan M.J. 2008. Integrating reproductive biology into scientific advice for fisheries management. Journal of Northwest Atlantic Fisheries Science 41: 37–51. DOI: 10.2960/J.v41.m615.
  • Narimatsu Y., Kitagawa D., Hattori T., Onodera H. 2005. Reproductive biology of female Rikuzen sole (Dexistes rikuzenius). Fishery Bulletin 103 (4): 635–647.
  • Nikolsky G.V. 1963. The ecology of fishes. 6. edn. Academic Press, London.
  • Pitt T.K. 1970. Distribution, abundance and spawning of yellow tail flounder, Limanda ferruginea, in the Newfoundland area of the North West Atlantic. Journal of Fisheries Research Board Canada 27 (1): 2261–2271.
  • Quéro J.-C., Desoutter M., Lagardère F. 1986. Soleidae. Pp. 1308–1328. In: Whitehead P.J.P., Bauchot M.-L., Hureau J.-C., Nielsen J., Tortonese E. (eds.) Fishes of the North-eastern Atlantic and the Mediterranean. Vol. 3. UNESCO, Paris.
  • Quignard J.-P., Pasteur N., Shehata S. 1982. Biosystématique du complexe Solea vulgaris du golfe du Lion (Poissons, Téléostéens, Soléidés). Revue des Travaux de l’Institut des Pêches Maritimes 46 (4): 273–284.
  • Rajaguru A. 1992. Biology of co-occurring tonguefishes, Cynoglossus arel andC. lida (Pleuronectiformes:Cynoglossidae), from Indian waters. Fishery Bulletin 90 (2): 328–367.
  • Reynolds J.D. 1974. Biology of small pelagic fishes in the New Volta Lake in Ghana. Part III: Sex and reproduction. Hydrobiologia 45 (4): 489–508. DOI: 10.1007/BF00012033.
  • Türkmen M. 2003. Investigation of some population parameters of common sole, Solea solea (L., 1758) from Üskenderun Bay. Turkish Journal of Veterinary and Animal Sciences 27: 317–323.
  • Vallisneri M., Tinti F., Tommasini S., Piccinetti C. 2001. Reproductive cycle of the common sole Solea vulgaris, Quensel, 1806 in the northern Adriatic Sea. Acta Adriatica 42 (2): 59–63.
  • Zaki M.I., Hamza A.K. 1986. Reproductive biology and induced spawning of Solea solea (L.) in Egypt. Bulletin of the National Institute of Oceanography and Fisheries (Egypt) 12: 115–125.
Typ dokumentu
Bibliografia
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Identyfikator YADDA
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