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A preliminary study of the reproductive biology of the biofouling organism Caprella acanthogaster (Crustacea, Amphipoda) in Sanggou Bay, China

文献类型: 外文期刊

作者: Wei, Yanwei 1 ; Zhang, Jihong 1 ; Wu, Wenguang 1 ; Yao, Yongfeng 1 ; Chen, Jie 2 ; Fang, Jianguang 1 ;

作者机构: 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst,Minist Agr, Key Lab Sustainable Utilizat Marine Fishery Resou, Shandong Prov Key Lab Fishery Resources & Ecol En, Qingdao 266071, Peoples R China

2.Shanghai

关键词: Caprella acanthogaster;Embryonic development;Reproductive biology;Temperature

期刊名称:AQUACULTURE ( 影响因子:4.242; 五年影响因子:4.723 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: The duration of embryonic development and the numbers of offspring and body lengths at sexual maturity of the biofouling amphipod Caprella acanthogaster at different temperatures were studied. Embryonic development was divided into nine stages: fertilized egg, cleavage stage, morula, blastula, gastrula, limb-bud stage, heart-beat stage, fully developed juveniles, and hatching juveniles. The duration of embryonic development was 196 h at 14 degrees C and 117 h at 20 degrees C. Temperature had a significant influence on maturation time and body length at sexual maturity (P < 0.05). However, it did not have a significant effect on the body length of juveniles (P > 0.05). Mean body lengths of juveniles, mean body lengths at sexual maturity, and maturation times at 14 degrees C were: 1.52 +/- 0.17 mm, 10.14 +/- 1.24 mm, and 33.20 +/- 3.27 days, respectively; and at 20 degrees C, they were: 1.37 +/- 0.07 mm, 6.66 +/- 0.75 mm, and 18.17 +/- 2.56 days. The number of offspring (EO) was positively correlated with the body length (BL). At 14 degrees C, the relationship was: EO = 7.74 BL - 39.66 (R-2 = 0.75) and, at 20 degrees C, it was: EO = 13.69 BL - 78.15 (R-2 = 0.77).

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