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Age determination in merobenthic optopuses using stylet increment analysis: assessing future challenges using Macroctopus maorum as a model
Citation
Doubleday, ZA and White, J and Pecl, GT and Semmens, JM, Age determination in merobenthic optopuses using stylet increment analysis: assessing future challenges using Macroctopus maorum as a model, ICES Journal of Marine Science, 68, (10) pp. 2059-2063. ISSN 1054-3139 (2011) [Refereed Article]
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DOI: doi:10.1093/icesjms/fsr135
Abstract
Stylet increment analysis (SIA) is a method recently developed to age octopuses; it involves the enumeration of daily growth increments within stylets (an internal shell). To examine the potential of SIA in a merobenthic octopus species, SIA was applied to Macroctopus maorum collected from southeast Australia and New Zealand (n = 147). The stylets had clear concentric growth increments and a core-like region. However, low increment counts (≤ 224 d) produced non-feasibly high (≤ 21.7% body weight per day) instantaneous growth rates, based on the assumption that increment number relates to age (d). In the light of these results, the issues surrounding the application of SIA to merobenthic octopuses is discussed, particularly in relation to the lack of understanding in regard to stylet development in the early life history stages and the importance of validating age at first increment formation.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | age determination, merobenthic, octopus, stylet increment analysis (SIA) |
| Research Division: | Agricultural and Veterinary Sciences |
| Research Group: | Fisheries Sciences |
| Research Field: | Fisheries Management |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Fisheries - Wild Caught |
| Objective Field: | Wild Caught Edible Molluscs |
| Author: | Doubleday, ZA (Dr Zoe Doubleday) |
| Author: | White, J (Mr James White) |
| Author: | Pecl, GT (Professor Gretta Pecl) |
| Author: | Semmens, JM (Associate Professor Jayson Semmens) |
| ID Code: | 72054 |
| Year Published: | 2011 |
| Web of Science® Times Cited: | 7 |
| Deposited By: | Sustainable Marine Research Collaboration |
| Deposited On: | 2011-08-18 |
| Last Modified: | 2018-03-20 |
| Downloads: | 0 |
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