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Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam

The Pacific longnose parrotfish Hipposcarus longiceps (Valenciennes 1840) represents a prime fishery resource throughout much of the tropical Pacific. In this study, we sampled the species from the Guam commercial fishery market across five consecutive years to characterize reproductive and age-base...

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Autores principales: Taylor, Brett M., Cruz, Eric
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5712210/
https://www.ncbi.nlm.nih.gov/pubmed/29201565
http://dx.doi.org/10.7717/peerj.4079
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author Taylor, Brett M.
Cruz, Eric
author_facet Taylor, Brett M.
Cruz, Eric
author_sort Taylor, Brett M.
collection PubMed
description The Pacific longnose parrotfish Hipposcarus longiceps (Valenciennes 1840) represents a prime fishery resource throughout much of the tropical Pacific. In this study, we sampled the species from the Guam commercial fishery market across five consecutive years to characterize reproductive and age-based demographic information imperative for informed fishery management. Compared with other parrotfishes, this species was found to be large-bodied, but has only a moderate life span of 10 + years. Hipposcarus longiceps was confirmed as a diandric protogynous hermaphrodite with highly sex-specific growth patterns and an overall mean asymptotic length of 434 mm fork length (FL). Females were estimated to reach median maturity at 329 mm FL (2.4 years) and have a median length at female-to-male sex change of 401 mm FL. Life-history trait values derived here were used to update previous models relating life history and vulnerability to overexploitation. We found that enhancement of just one species’ trait values improved model fits considerably, which strengthens the conclusion that life-history traits are a strong determinant of species’ vulnerability in the parrotfishes. This information is an imperative complement to other data sources facilitating formal stock assessment of a key fishery target.
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spelling pubmed-57122102017-12-03 Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam Taylor, Brett M. Cruz, Eric PeerJ Aquaculture, Fisheries and Fish Science The Pacific longnose parrotfish Hipposcarus longiceps (Valenciennes 1840) represents a prime fishery resource throughout much of the tropical Pacific. In this study, we sampled the species from the Guam commercial fishery market across five consecutive years to characterize reproductive and age-based demographic information imperative for informed fishery management. Compared with other parrotfishes, this species was found to be large-bodied, but has only a moderate life span of 10 + years. Hipposcarus longiceps was confirmed as a diandric protogynous hermaphrodite with highly sex-specific growth patterns and an overall mean asymptotic length of 434 mm fork length (FL). Females were estimated to reach median maturity at 329 mm FL (2.4 years) and have a median length at female-to-male sex change of 401 mm FL. Life-history trait values derived here were used to update previous models relating life history and vulnerability to overexploitation. We found that enhancement of just one species’ trait values improved model fits considerably, which strengthens the conclusion that life-history traits are a strong determinant of species’ vulnerability in the parrotfishes. This information is an imperative complement to other data sources facilitating formal stock assessment of a key fishery target. PeerJ Inc. 2017-11-29 /pmc/articles/PMC5712210/ /pubmed/29201565 http://dx.doi.org/10.7717/peerj.4079 Text en ©2017 Taylor and Cruz http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Aquaculture, Fisheries and Fish Science
Taylor, Brett M.
Cruz, Eric
Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam
title Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam
title_full Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam
title_fullStr Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam
title_full_unstemmed Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam
title_short Age-based and reproductive biology of the Pacific Longnose Parrotfish Hipposcarus longiceps from Guam
title_sort age-based and reproductive biology of the pacific longnose parrotfish hipposcarus longiceps from guam
topic Aquaculture, Fisheries and Fish Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5712210/
https://www.ncbi.nlm.nih.gov/pubmed/29201565
http://dx.doi.org/10.7717/peerj.4079
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