文献类型: 外文期刊
作者: Li, Hui Yu 1 ; Hong, Sung Yun 2 ; Jin, Zong Hua 3 ;
作者机构: 1.CAFS, E China Sea Fisheries Res Inst, Minist Agr China, Key & Open Lab Marine & Estuarine Fisheries, Shanghai 200090, Peoples R China
2.Pukyong Natl Univ, Dept Marine Biol, Pusan 608737, South Korea
3.E China Univ Sci & Technol, Coll Informat Sci & Engn, Shanghai 200237, Peoples R China
关键词: fecundity;embryonic development;reproductive output;brood loss
期刊名称:JOURNAL OF CRUSTACEAN BIOLOGY ( 影响因子:1.43; 五年影响因子:1.501 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Fecundity and brood loss during incubation were investigated in the crangonid shrimp Crangon uritai. Changes in egg length, volume and dry weight were also studied. During embryonic development, egg length and egg volume increased by 43.5%% and 69.3%%, respectively, whereas egg dry weight decreased by 23.2%%. Crangon uritai ovigerous females (5.61-14.11 mm CL) carried 412 to 13,824 eggs per brood, depending on their body size in both early and late stages of egg development. The reproductive output of C. uritai averaged 0.24, based on dry weight in early eggs. Brood loss through embryonic development was independent of female size and estimated to be a 5.56%% loss in the number of eggs and an 8.44%% loss in brood dry weight. Possible reasons for brood loss include the burrowing behavior of shrimp and increasing egg size, which results in reduced area for eggs to attach.
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