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Reproductive Biology and Ecology of the Green Mussel Perna viridis: A Multidisciplinary Approach

1
Department of Marine Bioresource Science, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh
2
Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna-9208, Bangladesh
3
WorldFish, Bangladesh and South Asia Office, Banani, Dhaka 1213, Bangladesh
*
Author to whom correspondence should be addressed.
Biology 2019, 8(4), 88; https://doi.org/10.3390/biology8040088
Received: 6 October 2019 / Revised: 7 November 2019 / Accepted: 8 November 2019 / Published: 15 November 2019
(This article belongs to the Section Marine Biology)
A multidisciplinary approach was applied to explore deeper knowledge about the reproductive biology and ecology of the green mussel (Perna viridis) by interlinking among ecological factors, ingested gut plankton, gonad fatty acid profile, and reproductive traits. Mussels were collected throughout the year from the coastal region of the Bay of Bengal of Bangladesh, and the histological analysis of 242 mussels revealed five stages of gametogenesis with an annual spawning season from January to April. The gonadosomatic index showed a strong correlation with the water quality parameters, ingested gut plankton groups, and gonadal fatty acids, and also displayed prominent effects of seasonality. In all datasets, we performed principal component analysis in which the first two principal components showed that seasonality explained >65% of the variability, and the multivariate spaces of seasonality corresponded to the gonad development. High salinity, nutrients, chlorophyll a, and plankton abundance in the water column were positively correlated with gonad development and the spawning of mussels. During the development stage, mussel ingested more plankton, particularly Bacillariophyceae and Pyrrophyceae, which were an important source of increased n-3 polyunsaturated fatty acids content in gonads. Furthermore, gonads accumulated more lipids and saturated fatty acids during the mature and spawning stages, which were probably utilized during embryogenesis and early larval development as energy sources and constituents of the cell membrane. This research provides a model toward a better understanding of reproductive biological traits and how these traits are interrelated with the surrounding environmental variables of the green mussel, which would be helpful in marine aquaculture and the sustainable exploitation of the fishery resources. View Full-Text
Keywords: green mussel; reproductive biology; gonad development; environmental factors; feeding habits; fatty acid profile; multidisciplinary approach green mussel; reproductive biology; gonad development; environmental factors; feeding habits; fatty acid profile; multidisciplinary approach
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Asaduzzaman, M.; Rahi Noor, A.; Rahman, M.M.; Akter, S.; Hoque, N.F.; Shakil, A.; Wahab, M.A. Reproductive Biology and Ecology of the Green Mussel Perna viridis: A Multidisciplinary Approach. Biology 2019, 8, 88.

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