Early Life History of Cultured Common Dentex (Dentex dentex L. 1758)

The early life history of common dentex (Dentex dentex L. 1758) was investigated under culture conditions. The percentage of fertilized buoyant eggs was generally high, between 80 and 85%. Egg diameters ranged from 0.938 to 1.089 mm. Larval development, growth, and some morphological changes were described from day 0 to day 32. Larvae were reared intensively in 6 m3 tank under a constant photoperiod (24 h light), and fed initially on rotifers, followed by Artemia nauplii and Artemia metanauplii. A green water technique was applied using Nannochloropsis sp., Chorella sp., and Isochrysis sp. at a density of 150,000-200,000 cells ml-1. First feeding began on day 6. Larvae completed yolk absorption on day 8 after hatching at 136 ºC cumulative temperature (day/degrees). Swimbladder inflation occurred between day 5 and day 7 post-hatching. Notochord flexion started on day 23 at 7.01 mm total length. Metamorphosis from larval to juvenile stage occurred between days 23 and 32 post-hatching at a mean total length of 12.7 mm.

Anahtar Kelimeler:

Dentex dentex, common dentex, larval development, metamorphosis, morphology

Early Life History of Cultured Common Dentex (Dentex dentex L. 1758)

Keywords:

Dentex dentex, common dentex, larval development, metamorphosis, morphology,

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Pavlidis, M., Greenwood, L., Mourot, B., Kokkari, C., Le Menn, F., Divanach, P., Scott, A.P.: Seasonal variations and maturity stages in relation to differences in serum levels of gonadal steroids, vitellogenin and thyroid hormones in the common dentex, Dentex dentex. Gen. Comp. Endocrinol., 2000; 118: 14–25.
Fırat, K., Saka, fi., Çoban, D.: The effect of light intensity on early life development of the common dentex Dentex dentex (L. 1758) larvae. Aquac. Res., 2003; 34: 727-732.
Pastor, E., Riera, F., Pou, S., Grau, A., Pittman, K., Batty, R., Verreth, J.: Summary of investigations on reproduction and larval rearing of common dentex, Dentex dentex (L.). ICES Marine Science Symposium. 1995; 201: 148–152.
Mourente, G., Rodriguez, A., Grau, A., Pastor, E.: Utilization of lipids by Dentex dentex L. (Osteichthyes Sparidae) larvae during lecitotrophia and subsequent starvation. Fish Physiol. Biochem., 1999; 21: 45–58.
Koumoundouros, G., Divanach, P., Kentouri. M.: Osteological development of the vertebral column and of the caudal complex in Dentex dentex. J. Fish Biol., 1999; 54: 424–436.
De Gaetani, D.: Uova, sviluppo embrionale e stadi post-embrionali negli Sparidi Dentex vulgaris. Cuv. R Comit. Thalassogr. Ital. Mem. 1938; 255: 1-10.
Jugdujakovic J., Dulcic J., Katavic I.: Embryonic and yolk-sac larval development of the sparid Dentex (Dentex dentex, Linnaeus. 1758). Fish. Res., 1995; 24: 91-97.
Saka, fi., Fırat, K., Çoban, D.: The development of the common dentex (Dentex dentex) eggs in relation to temperature. Aquac. Res., 2004; 35: 224-231.
Gould, S.J.: Allometry and size in ontogeny and phylogeny. Bio. Rev., 1966; 41: 587–640.
Loir, M., Le Gac, F., Somarakis, S., Pavlidis, M.: Sexuality and gonadal cycle of the common dentex (Dentex dentex) in intensive culture. Aquaculture, 2001; 194: 363–381.
Saka, fi., Fırat, K., Süzer, C..: The effect of light intensity on early life development of gilthead sea bream larvae. Isr. J. Aquacult.- Bamid., 2001; 53: 139-146.
Watanabe, W.O., Lee, C.S., Ellis, S.C., Ellis E.P.: Hatchery study of the effects of temperature on eggs and yolk sac larvae of the Nassau grouper, Epinephelus striatus. Aquaculture., 1995; 136: 141-147.
Ronnestad, I., Koven, W.M., Tandler, A., Harel, M., Fyhn, H.J.: Energy metabolism during development of eggs and larvae of gilthead sea bream Sparus aurata. Mar. Biol., 1994; 120: 187–196.
Heming, T.A., Buddington, R.K.: Yolk absorption in embryonic and larval fishes. In: Hoar, W.S.Z., Randall, D.J. Eds., The Physiology of Developing Fish. Fish Physiology, vol. XI, Academic Press, San Diego, 1988; 407–446.
Kitajima, C.: Acquisition of fertilized eggs and mass-culture of juveniles of red sea bream, Pagrus major. Spec. Rep. Nagasaki Pref. Inst. Fish., 1978; 5: 92 pp.
Chatain, B., Ounais-Guschemann, N.: Improved rate of initial swim bladder inflation in intensively reared Sparus auratus. Aquaculture, 1990; 84: 345–353.
Yamashita, K.: Differentiation of the swimbladder structure in larvae of the red sea bream Pagrus major. Jpn. J. Ichthyol., 1982; 29: 193–202.
Chatain, B.: La vessie natatoire chez Dicentrarchus labrax et Sparus auratus: I. Aspects morphologiques du development. Aquaculture, 1986; 53: 303–311.
Marangos, C.: Larviculture of the sheepshead bream, Puntazzo puntazzo Gmelin 1789 Pisces. Sparidae. A Workshop on Diversification in Aquaculture, Cyprus. Cah. Options Mediterr., 1995; 16: 41–46.
Fukuhara, O.: Study on the development of functional morphology and behaviour of the larvae of eight commercially valuable teleost fishes. Contr. Fish. Res. Japan Sea Block., 1992; 25: 1-122.