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Published (Version of record)CC BY V4.0, Open
Journal article
Reconstructing life-time reproductive histories using steroid hormones in cephalopod beaks
Limnology and oceanography letters, Vol.10(2), pp.212-222
04/2025
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Source: InCites
Abstract
Reproductive data are vital for fisheries and conservation management. For cephalopods, reproductive data are usually obtained by analyzing gonads, which only provide data on an individual at a given time and require whole deceased specimens. We developed a novel method for extracting reproductive hormones from along the growth axis of a chitinous structure which could thus provide lifetime reproductive histories. We tested our method on two octopus species by taking small subsamples (> 2 mg) of beak tissue along the growth axis. Estradiol and progesterone were detected in both sexes and species, but testosterone was not. Hormonal peaks were observed, likely indicating the timing of sexual maturity; however, peaks were not matched to absolute age. This is the first study to analyze hormones in the accretionary tissues of a marine invertebrate and could be used to collect vital reproductive data, such as age at maturity, on poorly understood species.
Details
- Title
- Reconstructing life-time reproductive histories using steroid hormones in cephalopod beaks
- Creators
- Erica D. Durante - University of South AustraliaMichael D. Wiese - University of South AustraliaAshley S. Meakin - University of South AustraliaKarina C. Hall - New South Wales Department of Primary IndustriesZoë A. Doubleday - University of South Australia
- Publication Details
- Limnology and oceanography letters, Vol.10(2), pp.212-222
- Publisher
- Wiley Periodicals LLC
- Number of pages
- 11
- Grant note
- Future Industries Institute, University of South Australia Fisheries Research and Development Corporation. Grant Number: 2020-008 Open access publishing facilitated by University of South Australia, as part of the Wiley - University of South Australia agreement via the Council of Australian University Librarians.
- Identifiers
- 991013262208002368
- Copyright
- © 2025 The Author(s).
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article