Evaluation of dietary microalgae in the culture of Acartia Steueri (Copepoda, Calanoida)

Takayama, Yoshiki and Fatimah Md. Yusoff, . and Toda, Tatsuki (2023) Evaluation of dietary microalgae in the culture of Acartia Steueri (Copepoda, Calanoida). Journal of Sustainability Science and Management (Malaysia), 18 (7). pp. 185-197. ISSN 2672-7226

Adult females of the calanoid copepod Acartia steueri were individually reared for eight days with different microalgal diets to determine the optimal microalgal diet for their survival and reproduction. Five mono-microalgal diets (Thalassiosira weissflogii, Rhodomonas salina, Tetraselmis suecica, Phaeodactylum tricornutum, and Isochrysis galbana) and one mixed microalgal diet (Tetraselmis suecica + Thalassiosira weissflogii) were tested. The survival rate of the females, egg production rates and hatching success were measured every day for eight days. A. steueri fed with R. salina, P. tricornutum, and I. galbana had lower rates of egg production over time and eventually egg production ceased. This phenomenon indicates that these microalgae are unfavourable as dietary substitutes for the adults of A. steueri. The cumulative number of eggs produced for eight days was 24.8 ± 4.2 eggs female-1 when fed with T. suecica, which was the highest value among the mono-microalgal diet treatments. The viable egg production was maximised with a mixed diet of T. suecica and T. weissflogii, and therefore the mixed diet can be considered a suitable diet for A. steueri adults.

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Abstract

Adult females of the calanoid copepod Acartia steueri were individually reared for eight days with different microalgal diets to determine the optimal microalgal diet for their survival and reproduction. Five mono-microalgal diets (Thalassiosira weissflogii, Rhodomonas salina, Tetraselmis suecica, Phaeodactylum tricornutum, and Isochrysis galbana) and one mixed microalgal diet (Tetraselmis suecica + Thalassiosira weissflogii) were tested. The survival rate of the females, egg production rates and hatching success were measured every day for eight days. A. steueri fed with R. salina, P. tricornutum, and I. galbana had lower rates of egg production over time and eventually egg production ceased. This phenomenon indicates that these microalgae are unfavourable as dietary substitutes for the adults of A. steueri. The cumulative number of eggs produced for eight days was 24.8 ± 4.2 eggs female-1 when fed with T. suecica, which was the highest value among the mono-microalgal diet treatments. The viable egg production was maximised with a mixed diet of T. suecica and T. weissflogii, and therefore the mixed diet can be considered a suitable diet for A. steueri adults.

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Item Type:	Article
AGROVOC Term:	Copepoda
AGROVOC Term:	zooplankton
AGROVOC Term:	microalgae
AGROVOC Term:	phytoplankton
AGROVOC Term:	aquaculture feeds
AGROVOC Term:	sampling
AGROVOC Term:	statistical methods
AGROVOC Term:	egg production
AGROVOC Term:	live feeds
AGROVOC Term:	feeding habits
Geographical Term:	Malaysia
Uncontrolled Keywords:	Acartia steueri
Depositing User:	Nor Hasnita Abdul Samat
Date Deposited:	23 Nov 2025 05:24
Last Modified:	23 Nov 2025 05:24
URI:	http://webagris.upm.edu.my/id/eprint/1583

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