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Reproduction in the deepwater squid Moroteuthis ingens, what does it cost?

Citation

Jackson, GD and Semmens, JM and Phillips, K and Jackson, CH, Reproduction in the deepwater squid Moroteuthis ingens, what does it cost?, Marine Biology, 145, (5) pp. 905-916. ISSN 0025-3162 (2004) [Refereed Article]

DOI: doi:10.1007/s00227-004-1375-x

Abstract

The cost of reproduction for the terminal spawning onychoteuthid squid, Moroteuthis ingens, was analysed using measures of condition and tissue biochemistry. Both males and females showed a dramatic drop in the weight of the gonad in stage 6 (spent) individuals. The mantle weight and nidamental gland weight of females also decreased during the maturation process. Males, however, had a marked increase in both the penis and spermatophoric complex weight in spent individuals, while female oviducal gland weight and nidamental gland length also increased in stage 6 individuals. Residual analysis indicated that testis growth was not developing at the expense of mantle growth, although there was a suggestion of cost to the fins. Females showed that the development of the ovary occurred at a cost to both the mantle and fins. Overall body condition also declined with maturity stage for both males and females, with stage 6 individuals of both sexes in poor condition. Very few females had eggs in the oviducts, suggesting that the oviducts are used as ducts instead of storage organs. Proximal analysis revealed a loss of constituents within the mantle during maturation, with an associated increase in water, indicating the remobilization of energy from the mantle to fuel reproduction. This study suggests that the digestive gland is not used as an energy store in this species. © Springer-Verlag 2004.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquatic Ecosystem Studies and Stock Assessment
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Fisheries - Wild Caught not elsewhere classified
Author:Jackson, GD (Dr George Jackson)
Author:Semmens, JM (Associate Professor Jayson Semmens)
Author:Phillips, K (Ms Katrina Phillips)
Author:Jackson, CH (Mrs Christine Jackson)
ID Code:31539
Year Published:2004
Web of Science® Times Cited:19
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2004-08-01
Last Modified:2007-10-14
Downloads:0

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