A simulation-based post-release surviral study for brownbanded bamboo sharks (Chylloscyllum punctatum) in the Gulf of Thailand.

Abstract:

Current fishing practices and habitat degradation in most of the world’s oceans pose significant threats to marine fish, especially for sharks which are very susceptible to overfishing due to their K-selected (ie slow growth and reproduction) characteristics. Sharks are incidentally taken in longlines and other commercial fisheries, resulting in high percentage of caught individuals being discarded (ie returned to the ocean either dead or alive). However, little is known about the fate of the released animals. Quantifying post-release survival (PRS) of discarded species is therefore essential to improved management and conservation of these taxa. There are different approaches to assess PRS (ie tagging, on-board observer’s data, etc.). One of the most common approaches to evaluate survival is containment studies (ie tanks or cages where individuals are held during a certain period of time and survival rates are estimated). However, and despite the facility of conceiving these experiments in terms of logistics, there is a lack of tools for explicit evaluation of alternative designs.

Año de publicación:

2014

Keywords:

Fuente:

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