Growth, egg production and hatching success of Acartia tonsa cultured at high densities
| Autor: | Audrey J. Geffen, Sofia C. Franco, Christina B. Augustin, Maria Teresa Dinis |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Larvae hippoglossus-hippoglossus Marine fish larvae media_common.quotation_subject ved/biology.organism_classification_rank.species Copepod temora-longicornis Aquatic Science Biology Estuarine copepod Developmental-stages Live feed cultures Epinephelus-coioides 03 medical and health sciences Stocking Animal science Aquaculture Calanoid copepod media_common Acartia tonsa Fatty-acids ved/biology Hatching business.industry fungi Aquatic animal Live feed 04 agricultural and veterinary sciences biology.organism_classification Fishery 030104 developmental biology embryonic structures 040102 fisheries 0401 agriculture forestry and fisheries Adult stocking density Reproduction business human activities Copepod |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0044-8486 |
| Popis: | Acartia tonsa is a calanoid copepod with high potential as live feed for marine aquaculture. However, its usage remains limited at an industrial scale, with cost effective production being conditional on successful culture at high density. The present study took an integrated approach to provide further insight on the effects of A. tonsa stocking density on copepod growth and adult reproduction, specifically egg production and egg hatching success. The effect of stocking density was studied by following the growth and survival of A. tonsa copepods, from egg hatching to maturity, on cultures initially stocked with 250, 400,1000, 3000 and 6000 copepods l(-1). Additionally, the effects of high-density rearing, of adults kept at 100, 250, 500 and 2500 copepods l(-1), on egg production and hatching success were also evaluated over a 5-day period. Higher stocking densities were shown to have no unfavourable effect on copepod growth, though mortality significantly increased with density, from |
| Databáze: | OpenAIRE |
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