Post-Capture Survival Estimates for Sharks and Rays in Australian Gillnet Fisheries

Research from Parks Australia quantifies immediate, delayed, and total post-capture survival for chondrichthyans discarded in Australia's main shark gillnet fishery. The study applies a risk-based method to on-board observations, finding high survival for commonly discarded species like the Port Jackson shark and low survival for key commercial species like gummy and school sharks. This dataset record was made available via the Australian Marine Parks Science Atlas and is provided by Parks Australia.

Use Cases

• Modeling population impacts of fishing based on species-specific survival rates mentioned in the description
• Assessing the effect of environmental variables like water temperature and soak time on survival outcomes
• Evaluating conservation risk for different chondrichthyan species based on their habitat (bottom-dwelling vs. pelagic)
• Developing standardized on-board observation protocols using the described risk-based approach

Strengths

• Estimates are provided for immediate, delayed, and total post-capture survival, offering a multi-faceted view.
• Analysis includes specific species like Port Jackson shark, Australian swellshark, spikey dogfish, gummy shark, and school shark.
• Research examines the impact of specific operational (gillnet soak time) and environmental (water temperature) factors.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified as the last update date is 2026-07-16 23:01:04.867895.

Provenance

Source

Parks Australia, referencing a source publication.

Collection Method

On-board observations from commercial shark gillnet fishing vessels, analyzed with a risk-based method.

Freshness

Last updated 2026-07-16 23:01:04.867895; freshness should be verified

Geography

Main shark fishery of Australia, likely within or relevant to Australian Marine Parks.