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Evaluation of suitable micro‐algal diets for intensive culture of the calanoid copepod Acartia bilobata.

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Title Evaluation of suitable micro‐algal diets for intensive culture of the calanoid copepod Acartia bilobata.
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Creator Not Available
 
Subject Acartia bilobata, copepod, development, egg production, phytoplankton, survival
 
Description Not Available
Copepods are alternative live feed in marine fish hatcheries, and the quality and type of micro-algal diets influence their culture productivity. Three algal species of differ-ent groups including prymnesiophyte: Isochrysis galbana (Iso), the diatom: Chaetoceros muelleri (Cht) and eustigmatophyte: Nannochloropsis occulata (Nan) were fed to the calanoid copepod Acartia bilobata. Selected algae were offered as mono-algal diets: T1- Iso, T2-Cht and T3-Nan or as mixed algal diets: T4-Nan + Cht, T5-Nan + Iso, T6- Iso + Cht and T7-Iso + Cht + Nan. Reproductive parameters, egg production, hatching success, nauplii and copepodite survival, development and first maturity, were closely monitored. Results illustrated that I. galbana was the most suitable diet for this cope-pod species, supporting higher average relative egg production (5631.62 ± 133.49 egg L−1 day−1), hatching success (96.32 ± 1.40%) and superior adult survival (44.44 ± 3.20%). Different algal diets influenced the nauplii and copepodite survival rate. Maximum survival to adults (56.67 ± 3.78%) and shortened development time (5.75 ± 0.12 days) and time to first maturity (4.50 ± 0.12 days) were observed when fed with I. galbana. The groups fed with C. muelleri exhibited lower survival (6.67 ± 0.67%) during devel-opment into adults, and the group fed with N. occulata alone or with C. muelleri did not survived till the adults. Amongst seven algal diets tested, I. galbana was found ideal for maximizing culture productivity, and hence recommended for intensive culture of A. bilobata.
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Date 2023-05-16T03:06:24Z
2023-05-16T03:06:24Z
2022-08-22
 
Type Journal
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/77338
 
Language English
 
Relation Not Available;
 
Publisher Wiley