Save

Development of embryos and larvae of Portunus trituberculatus (Decapoda, Brachyura) in off-season breeding mode

In: Crustaceana
View More View Less
  • 1 Marine and Fishery Institute of Zhejiang Ocean University, Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, Zhejiang, P.R. China
  • | 2 Key Laboratory of Marine Culture and Enhancement of Zhejiang Province, Zhoushan 316021, Zhejiang, P.R. China
Download Citation Get Permissions

Access options

Get access to the full article by using one of the access options below.

Institutional Login

Log in with Open Athens, Shibboleth, or your institutional credentials

Login via Institution

Purchase

Buy instant access (PDF download and unlimited online access):

€29.95$34.95

Abstract

Studying the development of embryos and larvae is vital in the understanding of crab biology, which is helpful for the smooth progression of crab culture. The development of embryos and larvae of Portunus trituberculatus under the off-season breeding mode was studied in this paper. The results showed that the embryonic development of P. trituberculatus could be divided into nine stages: zygote, cleavage, blastocyst, gastrula, nauplius, metanauplius, protozoea, prehatching stage and hatching stage. The colour of each stage was yellow, orange-yellow, orange-yellow, orange-yellow, orange, orange, jacinth, dark grey and black, respectively. When the water temperature and salinity were 28.6 ± 0.7°C and 26.3 ± 0.4, respectively, the embryonic development time was 180 hours and the effective accumulated temperature reached 4248 h · °C. Larval development went through a zoea and a megalopa phase. The zoeae can be divided into stage I zoea (Z1), stage II zoea (Z2), stage III zoea (Z3) and stage IV zoea (Z4). Under the conditions of a temperature of 29.7 ± 1.3°C and a salinity of 26.1 ± 0.2, it only took about 12 days from hatching to the development of a stage I juvenile crab (C1). In this study, it was found that the embryos and larvae could develop normally under the conditions of high temperature, and the breeding time was greatly shortened. Therefore, the off-season breeding and cultivation were considered promising for the aquaculture of this crab.

Content Metrics

All Time Past Year Past 30 Days
Abstract Views 69 69 9
Full Text Views 1 1 0
PDF Views & Downloads 7 7 0