Historic, pre-stock enhancement, demographic conditions of exploited populations of dusky flathead, Platycephalus fuscus, in eastern Australia

Gray, Charles A.

doi:10.1016/j.aaf.2022.07.001

Aquaculture and Fisheries

2024

DOI: 10.1016/j.aaf.2022.07.001

|View full text |Cite

Historic, pre-stock enhancement, demographic conditions of exploited populations of dusky flathead, Platycephalus fuscus, in eastern Australia

Charles A. Gray¹

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 They are of importance for both recreational fishing and commercial fisheries and are a popular table fish among consumers in New South Wales (NSW). 19 An estimated 100–200 tonnes of blue-spotted flathead ( P. caeruleopunctatus ) were caught in NSW estuaries and ocean waters across both recreational and commercial sectors between 2019 and 2020. 21 Dusky flathead ( P. fuscus ) has also been identified as a recreationally significant species for stock enhancement and has been the subject of hatchery production for release of juveniles.…”

mentioning

confidence: 99%

Scoliosis and kyphosis in blue-spotted and marbled flathead fish associated with a Myxobolus acanthogobii–like parasite

Ngo,

Go,

Spiers

et al. 2024

J VET Diagn Invest

View full text Add to dashboard Cite

Spinal deformities in finfish have the potential to impact aquaculture industries and wild populations by increasing morbidity, mortality, and reducing growth rates. Myxobolus acanthogobii has been implicated in causing scoliosis and lordosis in various aquatic species in Japan. We investigated 4 cases of spinal deformity in 2 flathead ( Platycephalus) species that were submitted to the Elizabeth Macarthur Agricultural Institute (EMAI) in New South Wales (NSW), Australia, between 2015 and 2021. Flathead are commercially significant species that are popular among Australian consumers, and are also sought-after species targeted by recreational fishers. Gross deformities are concerning to the community and may impact the quality and quantity of specimens available for consumption. Three blue-spotted flathead ( P. caeruleopunctatus) and one marbled flathead ( P. marmoratus) were submitted, all with marked scoliosis and kyphosis; 1–2-mm cysts were present on the dorsum of the brain, most often over the optic lobe or cerebellum. Cytology and differential interference microscopy of cyst material revealed numerous oval spores, x̄ 14 ± SD 0.75 µm × x̄ 11.5 ± SD 0.70 µm, with 2 pyriform polar capsules, the morphology of which is consistent with a Myxobolus sp. PCR assay and 18S rDNA sequencing of the cyst material identified a Myxobolus sp. with 96% identity to M. acanthogobii. The identification of this Myxobolus sp. confirms the presence of parasites with the potential to cause spinal deformity in significant aquatic species in NSW waterways.

show abstract

mentioning

confidence: 99%

Scoliosis and kyphosis in blue-spotted and marbled flathead fish associated with a Myxobolus acanthogobii–like parasite

Ngo,

Go,

Spiers

et al. 2024

J VET Diagn Invest

View full text Add to dashboard Cite

show abstract

A Preliminary Evaluation of Cobia Rachycentron canadum (Linnaeus, 1766) Stocking in Northeastern Brazil: Lessons From an Experimental Project

dos Santos,

Belarmino,

Bezerra

et al. 2024

Fisheries Management Eco

View full text Add to dashboard Cite

The cobia (Rachycentron canadum) is important to fisheries in Northeastern Brazil. To restore stocks in Rio Grande do Norte, cobia were stocked and the fishery was monitored over 4 years. We evaluated effects of stocking on cobia size composition in this data‐limited fishery to understand stocking limitations and explore possibilities for future projects. Total length of cobia was significantly shorter after stocking than before stocking, with mostly small fish caught mainly by nets, an unusual pattern for cobia. Total length also varied significantly among bottom types. Most of the cobia harvested were below the size at first maturity, which suggests that stocking increased the catch, but most fish harvested were immature, thereby potentially hindering stock recovery. For future projects, we recommend against the use of plastic tags for tagging hatchery cobia and propose releases that emulate natural spawning dynamics, alongside releasing fish at older ages. Further, we recommend robust post‐stocking fishery monitoring, and management strategies, such as a release of net‐caught cobia in the initial 2 years and incorporating validated fisher knowledge into decision‐making.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Historic, pre-stock enhancement, demographic conditions of exploited populations of dusky flathead, Platycephalus fuscus, in eastern Australia

Cited by 2 publications

References 57 publications

Scoliosis and kyphosis in blue-spotted and marbled flathead fish associated with a Myxobolus acanthogobii–like parasite

Scoliosis and kyphosis in blue-spotted and marbled flathead fish associated with a Myxobolus acanthogobii–like parasite

A Preliminary Evaluation of Cobia Rachycentron canadum (Linnaeus, 1766) Stocking in Northeastern Brazil: Lessons From an Experimental Project

Contact Info

Product

Resources

About