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The Adaptive Response of Protein Turnover to the Energetic Demands of Reproduction in a Cephalopod

Citation

Moltschaniwskyj, NA and Carter, CG, The Adaptive Response of Protein Turnover to the Energetic Demands of Reproduction in a Cephalopod, Physiological and Biochemical Zoology, 86, (1) pp. 119-126. ISSN 1522-2152 (2013) [Refereed Article]


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Copyright Statement

Copyright 2012 The University of Chicago

DOI: doi:10.1086/667799

Abstract

Sourcing energy for reproduction is a major driver of the lifehistory characteristics of animals. Unlike other molluscs, cephalopods do not appear to have significant glycogen stores, and energy is either sourced directly from ingested food or mobilized from protein stores in the muscle. Given the importance of protein to cephalopods, this study quantified changes in protein turnover in the muscle tissue in reproductively immature and maturing/mature individuals. Quantifying protein accretion and protein synthesis allowed an assessment of protein turnover in immature and maturing individuals of the southern dumpling squid (Euprymna tasmanica), which has fast nonasymptotic growth, has a short generation time, and does not use lipid stores. This study found that protein turnover slowed in the mantle muscle tissue with gonad growth, suggesting an adaptive response to the energy demands associated with reproduction but one that allows for continued somatic growth and muscle function in these animals. However, the cost of reproduction may be indirect, with less energy available for somatic repair, and therefore may be responsible for the rapid senescence typical of many cephalopod species.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Aquaculture Crustaceans (excl. Rock Lobster and Prawns)
Author:Carter, CG (Professor Chris Carter)
ID Code:84017
Year Published:2013
Funding Support:Australian Research Council (A00105664)
Web of Science® Times Cited:6
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2013-04-11
Last Modified:2014-04-14
Downloads:0

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