Egg and larval quality assessment in the Argentinean red porgy (Pagrus pagrus)

被引:28
作者
Aristizabal, Eddie [1 ]
Suarez, Julieta [1 ,2 ]
Vega, Adrian [1 ]
Bargas, Rita [3 ]
机构
[1] Inst Nacl Invest & Desarrollo Pesquero, RA-7600 Mar Del Plata, Buenos Aires, Argentina
[2] Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
[3] Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, RA-7600 Mar Del Plata, Argentina
关键词
Egg quality; Larval quality; Floating rate; Fecundity; Pagrus pagrus; Red porgy; HALIBUT HIPPOGLOSSUS-HIPPOGLOSSUS; SPARUS-AURATA; GILTHEAD SEABREAM; REPRODUCTIVE-PERFORMANCE; RAINBOW-TROUT; LIFE-HISTORY; PARALICHTHYS-OLIVACEUS; SHARPSNOUT SEABREAM; WATER TEMPERATURE; JAPANESE FLOUNDER;
D O I
10.1016/j.aquaculture.2008.10.044
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The egg and larval quality of red porgy (Pagrus pagrus) during six consecutive spawning seasons was analyzed. The spawing season of red porgy in captivity lasted between 2 and 4 months, showing wide daily variations in relative fecundity and floating rate. Annual fecundity Showed a minimum of 331.900 eggs kg(-1) in 2003 and a peak of 958,200 eggs kg(-1) female wet weight in 2002. Floating rate differed significantly among seasons, with all average gross value of 52.7%. Annual production of floating eggs ranged between 131,500 eggs kg(-1) (2003) and 646,300 eggs kg(-1) female wet weight (2002), representing a 39.6% and a 67.4% of the annual fecundity, respectively. A multiple regression model using hatching and floating rates was formulated, which correlated well with larval survival as dependent variable. Our results indicated that hatching and floating rates could be used as potential markers to predict survival of led porgy larvae with certain degree of accuracy very early during hatchery activities. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:329 / 334
页数:6
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