Effects of different diets on the reproduction and naupliar development of the copepod Acartia bifilosa

The influence of diatoms on the reproduction and naupliar development of Acartia bifilosa was investigated under laboratory conditions, comparing initial in situ values and laboratory-food treatments. Egg production by A. bifilosa was significantly reduced by one diatom diet ( Phaeodactylum tricornu...

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Bibliographic Details
Published in:Journal of experimental marine biology and ecology 2008-02, Vol.355 (2), p.95-102
Main Authors: Li, Jie, Sun, Song, Li, Chao-lun, Zhang, Zhan, Pu, Xin-ming
Format: Article
Language:English
Subjects:
Acartia bifilosa
Animal and plant ecology
Animal, plant and microbial ecology
Bacillariophyceae
Biological and medical sciences
Crustacea
Diatom
Egg production
Fundamental and applied biological sciences. Psychology
Hatching success
Invertebrates
Marine
Nannochloropsis oculata
Naupliar
Phaeodactylum tricornutum
Platymonas
Sea water ecosystems
Skeletonema costatum
Synecology
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Summary:The influence of diatoms on the reproduction and naupliar development of Acartia bifilosa was investigated under laboratory conditions, comparing initial in situ values and laboratory-food treatments. Egg production by A. bifilosa was significantly reduced by one diatom diet ( Phaeodactylum tricornutum: Pt) and by two non-diatom diets ( Platymonas subordiformis: Ps and Nannochloropsis oculata: No). It was less affected by the other diatom diet ( Skeletonema costatum: Sc) or by two mixed-food treatments (D-mix and DG-mix), composed of two diatoms (Pt, Sc) and four species (Pt, Sc, Ps and No), respectively. The negative effect of Pt was eliminated when adult copepods were offered mixed-food diets. There were no significant differences between the hatching success values observed in filtered seawater and in algal exudates, indicating that diatoms did not produce active dissolved toxic substances under the different food concentrations tested. The mortality rate of nauplii was higher with Pt than the other diets, suggesting that this diatom species had a negative effect on egg production, hatching success and naupliar survival simultaneously. Compared to other diets, No and Pt were not beneficial food sources for reproduction and for female and larval survival.
ISSN:0022-0981
1879-1697
DOI:10.1016/j.jembe.2007.12.005