Reproductive demography of a temperate protogynous and herbivorous fish, Odax pullus (Labridae, Odacini)

Elizabeth Laman Trip; David Raubenheimer; Kendall D. Clements; John Howard Choat

doi:10.1071/MF10238

Reproductive demography of a temperate protogynous and herbivorous fish, Odax pullus (Labridae, Odacini)

Elizabeth Laman Trip, David Raubenheimer, Kendall D. Clements, John Howard Choat

Biological, Environmental Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A common view is that, in marine fishes, herbivory and sex change are subject to physiological constraints at high latitudes, which are likely to affect growth rates and reproductive outputs. The present study examines the reproductive demography of Odax pullus, an herbivorous and protogynous species of temperate New Zealand. We establish an otolith-based methodology for age estimation and investigate sex-specific growth, longevity and age-based reproductive events. Individuals achieved a maximum age of 11 years, reached 85% of adult body size (455mm FL) within the first 3.5 years of life, were sexually mature by the age of 1.11.5 years and changed sex at 2.83.5 years, indicating fast simultaneous somatic and reproductive growth. There was no significant difference in growth or body size between the sexes. Ovary weight of spawning females increased significantly with size and age, suggesting the presence of size- and age-fecundity skews underlying the absence of sex change in larger and older females. Testes of reproductively active males comprised less than 1% of bodyweight, suggesting pair-spawning and little sperm competition. The present study provides metrics to support comparisons of the demography of this temperate protogynous and herbivorous labrid across spatial or temporal strata. © CSIRO 2011.

Original language	English (US)
Pages (from-to)	176
Journal	Marine and Freshwater Research
Volume	62
Issue number	2
DOIs	https://doi.org/10.1071/MF10238
State	Published - Nov 22 2018

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank Jethro Johnson, Brady Doak and Murray Birch for help with collection of samples; Benjamin Ruttenberg, Natalie Moltschaniwskyj, Ashley Williams and two anonymous reviewers for helpful comments of an earlier draft of the paper; and the Leigh Marine Laboratory for access to the Hawere research vessel. Samples were collected under New Zealand Ministry of Fisheries Permit 385, and the work was conducted under The University of Auckland Animal Ethics Committee Approval #AEC/03/2006/R456. The study and E.L.T. were supported by a Royal Society of New Zealand Marsden Fund grant to D.R., K.D.C. and J.H.C. E.L.T. was also supported by a University of Auckland International Fees Bursary, the University of Auckland's School of Biological Sciences, and the University of Auckland PBRF fund. D.R. was part-funded by the National Research Centre for Growth and Development, New Zealand.

ASJC Scopus subject areas

Ecology
Ecology, Evolution, Behavior and Systematics
Oceanography
Aquatic Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1071/MF10238

Cite this

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title = "Reproductive demography of a temperate protogynous and herbivorous fish, Odax pullus (Labridae, Odacini)",

abstract = "A common view is that, in marine fishes, herbivory and sex change are subject to physiological constraints at high latitudes, which are likely to affect growth rates and reproductive outputs. The present study examines the reproductive demography of Odax pullus, an herbivorous and protogynous species of temperate New Zealand. We establish an otolith-based methodology for age estimation and investigate sex-specific growth, longevity and age-based reproductive events. Individuals achieved a maximum age of 11 years, reached 85% of adult body size (455mm FL) within the first 3.5 years of life, were sexually mature by the age of 1.11.5 years and changed sex at 2.83.5 years, indicating fast simultaneous somatic and reproductive growth. There was no significant difference in growth or body size between the sexes. Ovary weight of spawning females increased significantly with size and age, suggesting the presence of size- and age-fecundity skews underlying the absence of sex change in larger and older females. Testes of reproductively active males comprised less than 1% of bodyweight, suggesting pair-spawning and little sperm competition. The present study provides metrics to support comparisons of the demography of this temperate protogynous and herbivorous labrid across spatial or temporal strata. {\textcopyright} CSIRO 2011.",

author = "{Laman Trip}, Elizabeth and David Raubenheimer and Clements, {Kendall D.} and Choat, {John Howard}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We thank Jethro Johnson, Brady Doak and Murray Birch for help with collection of samples; Benjamin Ruttenberg, Natalie Moltschaniwskyj, Ashley Williams and two anonymous reviewers for helpful comments of an earlier draft of the paper; and the Leigh Marine Laboratory for access to the Hawere research vessel. Samples were collected under New Zealand Ministry of Fisheries Permit 385, and the work was conducted under The University of Auckland Animal Ethics Committee Approval #AEC/03/2006/R456. The study and E.L.T. were supported by a Royal Society of New Zealand Marsden Fund grant to D.R., K.D.C. and J.H.C. E.L.T. was also supported by a University of Auckland International Fees Bursary, the University of Auckland's School of Biological Sciences, and the University of Auckland PBRF fund. D.R. was part-funded by the National Research Centre for Growth and Development, New Zealand.",

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AU - Raubenheimer, David

AU - Clements, Kendall D.

AU - Choat, John Howard

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We thank Jethro Johnson, Brady Doak and Murray Birch for help with collection of samples; Benjamin Ruttenberg, Natalie Moltschaniwskyj, Ashley Williams and two anonymous reviewers for helpful comments of an earlier draft of the paper; and the Leigh Marine Laboratory for access to the Hawere research vessel. Samples were collected under New Zealand Ministry of Fisheries Permit 385, and the work was conducted under The University of Auckland Animal Ethics Committee Approval #AEC/03/2006/R456. The study and E.L.T. were supported by a Royal Society of New Zealand Marsden Fund grant to D.R., K.D.C. and J.H.C. E.L.T. was also supported by a University of Auckland International Fees Bursary, the University of Auckland's School of Biological Sciences, and the University of Auckland PBRF fund. D.R. was part-funded by the National Research Centre for Growth and Development, New Zealand.

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N2 - A common view is that, in marine fishes, herbivory and sex change are subject to physiological constraints at high latitudes, which are likely to affect growth rates and reproductive outputs. The present study examines the reproductive demography of Odax pullus, an herbivorous and protogynous species of temperate New Zealand. We establish an otolith-based methodology for age estimation and investigate sex-specific growth, longevity and age-based reproductive events. Individuals achieved a maximum age of 11 years, reached 85% of adult body size (455mm FL) within the first 3.5 years of life, were sexually mature by the age of 1.11.5 years and changed sex at 2.83.5 years, indicating fast simultaneous somatic and reproductive growth. There was no significant difference in growth or body size between the sexes. Ovary weight of spawning females increased significantly with size and age, suggesting the presence of size- and age-fecundity skews underlying the absence of sex change in larger and older females. Testes of reproductively active males comprised less than 1% of bodyweight, suggesting pair-spawning and little sperm competition. The present study provides metrics to support comparisons of the demography of this temperate protogynous and herbivorous labrid across spatial or temporal strata. © CSIRO 2011.

AB - A common view is that, in marine fishes, herbivory and sex change are subject to physiological constraints at high latitudes, which are likely to affect growth rates and reproductive outputs. The present study examines the reproductive demography of Odax pullus, an herbivorous and protogynous species of temperate New Zealand. We establish an otolith-based methodology for age estimation and investigate sex-specific growth, longevity and age-based reproductive events. Individuals achieved a maximum age of 11 years, reached 85% of adult body size (455mm FL) within the first 3.5 years of life, were sexually mature by the age of 1.11.5 years and changed sex at 2.83.5 years, indicating fast simultaneous somatic and reproductive growth. There was no significant difference in growth or body size between the sexes. Ovary weight of spawning females increased significantly with size and age, suggesting the presence of size- and age-fecundity skews underlying the absence of sex change in larger and older females. Testes of reproductively active males comprised less than 1% of bodyweight, suggesting pair-spawning and little sperm competition. The present study provides metrics to support comparisons of the demography of this temperate protogynous and herbivorous labrid across spatial or temporal strata. © CSIRO 2011.

UR - http://hdl.handle.net/10754/577042

UR - http://www.publish.csiro.au/?paper=MF10238

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U2 - 10.1071/MF10238

DO - 10.1071/MF10238

M3 - Article

SN - 1323-1650

VL - 62

SP - 176

JO - Marine and Freshwater Research

JF - Marine and Freshwater Research

IS - 2

ER -

Reproductive demography of a temperate protogynous and herbivorous fish, Odax pullus (Labridae, Odacini)

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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