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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Length–Weight Relationships of the Prized Sea Cucumber Holothuria lessoni from In Situ and Ex Situ Measurements
Journal of marine science and engineering, Vol.12(12), 2283
12/12/2024
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Source: InCites
Abstract
Fisheries science draws on morphometric data for stock assessments. Length–weight relationships are essential for estimating body weight from length measurements taken either underwater (in situ) or out of the water (ex situ). We examined morphometric models for the high-valued sea cucumber, Holothuria lessoni. From 77 specimens captured in 2024 (mean weight ± SD: 1774 ± 372 g), we measured body length and width in situ and ex situ, then weighed the animals ex situ. We compared morphometric models using four biometric parameters. The fitted relationships were more statistically significant (p < 0.001) when using in situ measurements compared to ex situ measurements. The length–weight relationship from our study was compared with those from two previous studies on the same species at the same location. Each study generated significantly (p < 0.001) different length–weight relationships. These findings suggest that length–weight relationships should be re-evaluated at regular intervals, as they may evolve over time. Our study indicates that estimation of body weight from length (and width) must rely on established relationships corresponding to whether the measurements are made in situ or ex situ. Our results suggest that in situ measurements could provide more reliable data for length–weight relationships in certain holothuroids.
Details
- Title
- Length–Weight Relationships of the Prized Sea Cucumber Holothuria lessoni from In Situ and Ex Situ Measurements
- Creators
- Lea Djenidi - National Marine Science Centre, Southern Cross University, Coffs HarbourSteven Purcell - National Marine Science Centre, Southern Cross University, Coffs HarbourAaron Thornton - National Marine Science Centre, Southern Cross University, Coffs HarbourHugues Gossuin - Aquarium des Lagons (New Caledonia, Noumea)Antoine Gilbert - Ginger SOPRONER
- Publication Details
- Journal of marine science and engineering, Vol.12(12), 2283
- Publisher
- MDPI AG; BASEL
- Grant note
- The fieldwork in this research was partially funded by the Faculty of Science and Engineering, and the Aquarium des Lagons funded the costs for the vessel.
- Identifiers
- 991013246561202368
- Copyright
- © 2024 by the authors
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre
- Language
- English
- Resource Type
- Journal article