Life-history traits and commercial catch composition of Chelidonichthys kumu in south-eastern Australia

Stewart, J; Fowler, AM; Meadows, NM; Johnson, DD

Life-history traits and commercial catch composition of Chelidonichthys kumu in south-eastern Australia

Stewart, J Fowler, AM Meadows, NM Johnson, DD

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Regional Studies in Marine Science, 2022, 56, pp. 102720
Issue Date:: 2022-11-01

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Field	Value	Language
dc.contributor.author	Stewart, J
dc.contributor.author	Fowler, AM
dc.contributor.author	Meadows, NM
dc.contributor.author	Johnson, DD
dc.date.accessioned	2023-02-01T05:03:00Z
dc.date.available	2023-02-01T05:03:00Z
dc.date.issued	2022-11-01
dc.identifier.citation	Regional Studies in Marine Science, 2022, 56, pp. 102720
dc.identifier.issn	2352-4855
dc.identifier.issn	2352-4855
dc.identifier.uri	http://hdl.handle.net/10453/165785
dc.description.abstract	The red gurnard (Chelidonichthys kumu) is a coastal benthic fish supporting substantial fisheries in the Indo-West Pacific. Despite this, biological knowledge of the species is limited to New Zealand, placing other fished populations at risk of overexploitation if they are less productive. We determined the age, growth, reproductive biology and commercial catch composition of C. kumu from the trawl fishery in New South Wales (NSW). We also tested the hypothesis that growth rates and body size in NSW would be smaller than New Zealand, given the less productive marine environment in NSW and relative food limitation. Similar to New Zealand, individuals from NSW ranged in length from 13 to 56 cm FL and 1 to 13 years of age, with the largest and oldest fish being predominantly female. Females grew faster and to a greater maximum size than males. Growth was broadly similar between populations in NSW and New Zealand. Spawning period in NSW was protracted (11 months) and peaked in winter, contrasting with a peak in spring/summer in New Zealand. Size-at-maturity was similar between the two regions. The current study provides fundamental biological information to inform stock assessment and management of C. kumu in NSW.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Regional Studies in Marine Science
dc.relation.isbasedon	10.1016/j.rsma.2022.102720
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0405 Oceanography
dc.title	Life-history traits and commercial catch composition of Chelidonichthys kumu in south-eastern Australia
dc.type	Journal Article
utslib.citation.volume	56
utslib.for	0405 Oceanography
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access	*
dc.date.updated	2023-02-01T05:02:58Z
pubs.publication-status	Published
pubs.volume	56

Abstract:

The red gurnard (Chelidonichthys kumu) is a coastal benthic fish supporting substantial fisheries in the Indo-West Pacific. Despite this, biological knowledge of the species is limited to New Zealand, placing other fished populations at risk of overexploitation if they are less productive. We determined the age, growth, reproductive biology and commercial catch composition of C. kumu from the trawl fishery in New South Wales (NSW). We also tested the hypothesis that growth rates and body size in NSW would be smaller than New Zealand, given the less productive marine environment in NSW and relative food limitation. Similar to New Zealand, individuals from NSW ranged in length from 13 to 56 cm FL and 1 to 13 years of age, with the largest and oldest fish being predominantly female. Females grew faster and to a greater maximum size than males. Growth was broadly similar between populations in NSW and New Zealand. Spawning period in NSW was protracted (11 months) and peaked in winter, contrasting with a peak in spring/summer in New Zealand. Size-at-maturity was similar between the two regions. The current study provides fundamental biological information to inform stock assessment and management of C. kumu in NSW.

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http://hdl.handle.net/10453/165785