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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, Veterinary and Food Sciences |
| Research Group: | Fisheries sciences |
| Research Field: | Aquaculture and fisheries stock assessment |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Fisheries - wild caught |
| Objective Field: | Fisheries - wild caught not elsewhere classified |
| UTAS Author: | Jackson, GD (Dr George Jackson) |
| UTAS Author: | Semmens, JM (Professor Jayson Semmens) |
| UTAS Author: | Phillips, K (Ms Katrina Phillips) |
| UTAS Author: | Jackson, CH (Mrs Christine Jackson) |
| ID Code: | 31539 |
| Year Published: | 2004 |
| Web of Science® Times Cited: | 22 |
| Deposited By: | TAFI - Marine Research Laboratory |
| Deposited On: | 2004-08-01 |
| Last Modified: | 2007-10-14 |
| Downloads: | 0 |
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