Embryonic development and larval cultivation of Paphia schnelliana (Dunker), a unique economic species of the Beibu Gulf
文献类型： 外文期刊
作者： Deng, Zhenghua 1 ; Wei, Haijun 1 ; Zhao, Wang 1 ; Chen, Mingqiang 1 ; Yu, Gang 1 ; Sun, Jing 1 ; Li, Youning 1 ; Wang, Yu 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploit, Minist Agr, Guangzhou 510300, Peoples R China
2.Chinese Acad Fishery Sci, Trop Fisheries Res & Dev Ctr, South China Sea Fisheries Res Inst, Sanya 572018, Peoples R China
3.Sanya Trop Fisheries Res Inst, Sanya 572018, Peoples R China
4.Beihai Jinbuhuan Aquat Prod Co Ltd, Beihai 536007, Peoples R China
关键词： Paphia schnelliana; Embryonic development; Larval cultivation; Microalgae dietary selection
期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）
ISSN： 0044-8486
年卷期： 2021 年 533 卷
页码：
收录情况： SCI
摘要： In order to grasp the reproductive biology of Paphia schnelliana and to provide references for seed breeding, the embryonic development, larval growth and morphological changes, movement, and feeding behavior of P. schnelliana were observed. Nine species of micmalgae (Chlorella vulgaris, Nannochloropsis oculata, Dunaliella salina, Platymonas subcordiformis, Pavlova viridis, Dicrateria zhanjianggensis, Isochrysis galbana, Chaetoceros muelleri, and Nitzschia closterium) were tested for ingestion and digestion in P. schnelliana larvae using optical microscopy to choose an appropriate diet. Fertilized eggs of P. schnelliana hatched into D-larvae after 16 h and 15 min, the larvae began to ingest microalgae after 19 h and 45 min, and the larvae developed to metamorphosis stage at 9 days post hatch (dph). The growth model of shell length and shell height is that of accelerated growth, and the larva move through the water in a clockwise direction. Of the nine species of micmalgae fed, larvae could ingest C. vulgaris, N. oculata, D. salina, P. viridis, D. zhanjianggensis and I. galbana at 1 dph, P. subcordiformis at 2 dph, C. muelleri at 3 dph, and N. closterium could not be ingested during the planktonic period. It was difficult for the larvae to digest C. vulgaris and N. oculata. P. schnelliana spend a short time in embryonic development, hatching, and planktonic larval cultivation. There are a widely variety of microalgal species that can be used for feeding as the newly hatched larvae of P. schnelliana are relatively large. P. schnelliana is a valuable species with potential as a cultivated species.
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