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Embryonic development of southern calamary (Sepioteuthis australis) within the constraints of an aggregated egg mass
Citation
Steer, MA and Moltschaniwskyj, NA and Jordan, AR, Embryonic development of southern calamary (Sepioteuthis australis) within the constraints of an aggregated egg mass, Marine and Freshwater Research, 54, (3) pp. 217-226. ISSN 1323-1650 (2003) [Refereed Article]
DOI: doi:10.1071/MF02107
Abstract
A post-cleavage embryological scheme was established for southern calamary Sepioteuthis australis. Using this developmental scheme, intra- and interspecific comparisons were made. Sepioteuthis australis development most closely resembled that of its tropical congeneric species, S. lessoniana, with only a few subtle heterochronies. The greatest developmental difference was observed when comparisons were made with Loligo pealei. These differences were attributed to developmental duration and respective egg sizes. Within S. australis, variation in developmental rates among embryos was associated with the size of the egg mass, with less variation evident in smaller egg masses. Embryos located on the periphery of the egg mass and at the distal or unattached end of an individual egg strand developed significantly faster than those located deep within the egg mass. On average, embryos in small egg masses, consisting of five individual egg strands, developed significantly faster than those in dense aggregations (>100 strands).
Item Details
Item Type: | Refereed Article |
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Research Division: | Biological Sciences |
Research Group: | Zoology |
Research Field: | Invertebrate biology |
Objective Division: | Environmental Management |
Objective Group: | Marine systems and management |
Objective Field: | Marine biodiversity |
UTAS Author: | Steer, MA (Dr Michael Steer) |
UTAS Author: | Moltschaniwskyj, NA (Associate Professor Natalie Moltschaniwskyj) |
UTAS Author: | Jordan, AR (Dr Alan Jordan) |
ID Code: | 26399 |
Year Published: | 2003 |
Web of Science® Times Cited: | 28 |
Deposited By: | TAFI - Aquaculture |
Deposited On: | 2003-08-01 |
Last Modified: | 2004-03-29 |
Downloads: | 0 |
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