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

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Relation http://eprints.cmfri.org.in/16444/
https://onlinelibrary.wiley.com/doi/full/10.1111/are.16092
https://doi.org/10.1111/are.16092
 
Title Evaluation of suitable micro-algal diets for intensive culture of
the calanoid copepod Acartia bilobata
 
Creator Chintada, Balakrishna
Ranjan, Ritesh
Babitha Rani, A M
Santhosh, B
Megarajan, Sekhar
Ghosh, Shubhadeep
Xavier, Biji
Gopalakrishnan, A
 
Subject Copepods
Food and Feeding
Algae
 
Description 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.
 
Publisher Wiley
 
Date 2022
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/16444/1/Aquaculture%20Research_2022_Gopalakrishnan%20A.pdf
Chintada, Balakrishna and Ranjan, Ritesh and Babitha Rani, A M and Santhosh, B and Megarajan, Sekhar and Ghosh, Shubhadeep and Xavier, Biji and Gopalakrishnan, A (2022) Evaluation of suitable micro-algal diets for intensive culture of the calanoid copepod Acartia bilobata. Aquaculture Research, 53 (17). pp. 6193-6204.