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Life history traits of the marine amphipod Cymadusa vadosa under laboratory conditions: insights on productivity and aquaculture potential

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Abstract

Marine amphipods are gaining commercial interest as an alternative live feed resource for cephalopod, crustacean, finfish and seahorse aquaculture. Nevertheless, there is a knowledge gap in establishing large-scale amphipod cultures. In an attempt to evaluate the potential of the marine amphipod Cymadusa vadosa as a new live feed candidate, the life history was studied and reported for the first time under laboratory conditions. The amphipods collected just offshore at Bidong Island, Terengganu, were cultured in filtered water (salinity 30 ppt, 28 °C) in 500-mm clear plastic containers. The life history of C. vadosa was monitored using juveniles from a single brood with five replicates. Cymadusa vadosa exhibited a semiannual, multivoltine life history pattern. Maturation time of the female was 17.4 days whilst female size at maturation was 4.10 mm. Mean duration of the incubation period was 7.4 days. Mean lifespan was 81.2 days for males and 113.6 days for females. Mean number of broods produced in a life span was 4.2. Brood sizes ranged from 3 to 40 juveniles, with a mean of 24.5 juveniles per brood. Females produced 103.0 juveniles per life span. A strong positive correlation R2 = 0.97 between female size and the number of juveniles produced was recorded. Mean maximum size of males and females observed within a lifespan was 5.95 mm and 6.11 mm in length, respectively. This first look at C. vadosa life history lays the foundation for future studies on its potential use as an alternative live feed for aquaculture.

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All data are available from the corresponding author by request.

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Acknowledgments

The authors are grateful to the University of Malaysia Terengganu, especially the staff of AKUATROP for their support in carrying out the current study. Much appreciation to Suhairi Mazelan for the drawing of Cymadusa vadosa used in this paper.

Funding

This study was supported by the Golden Goose Research Grant (GGRG), Universiti Malaysia Terengganu (Vot. No. 55189) and the Higher Institution Center of Excellence (HICOE) grant for the development of future food through sustainable shellfish aquaculture (Vot. No. 56046).

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Conceptualization: SS, MNA, MI; Methodology: SS, MI; Investigation: SS; Writing—Original Draft: SS; Formal analysis: BARA, KW; Writing—Review and Editing: VTO, SDI, KW, HF; Data Curation: MNA; Resources: MI, MHA; Supervision: NWR, HM, MI; Project administration: SS, SDI, MI; Funding acquisition: MI.

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Correspondence to Victor Tosin Okomoda or Mhd Ikhwanuddin.

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Shahin, S., Okomoda, V.T., Ishak, S.D. et al. Life history traits of the marine amphipod Cymadusa vadosa under laboratory conditions: insights on productivity and aquaculture potential. Aquat Sci 85, 103 (2023). https://doi.org/10.1007/s00027-023-01000-7

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  • DOI: https://doi.org/10.1007/s00027-023-01000-7

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