Survival of a grey reef shark Carcharhinus amblyrhynchos without a dorsal fin
نویسندگان
چکیده
منابع مشابه
Growth and life history variability of the grey reef shark (Carcharhinus amblyrhynchos) across its range
For broadly distributed, often overexploited species such as elasmobranchs (sharks and rays), conservation management would benefit from understanding how life history traits change in response to local environmental and ecological factors. However, fishing obfuscates this objective by causing complex and often mixed effects on the life histories of target species. Disentangling the many driver...
متن کاملConnectivity in grey reef sharks (Carcharhinus amblyrhynchos) determined using empirical and simulated genetic data
Grey reef sharks (Carcharhinus amblyrhynchos) can be one of the numerically dominant high order predators on pristine coral reefs, yet their numbers have declined even in the highly regulated Australian Great Barrier Reef (GBR) Marine Park. Knowledge of both large scale and fine scale genetic connectivity of grey reef sharks is essential for their effective management, but no genetic data are y...
متن کاملEffects of Including Misidentified Sharks in Life History Analyses: A Case Study on the Grey Reef Shark Carcharhinus amblyrhynchos from Papua New Guinea.
Fisheries observer programs are used around the world to collect crucial information and samples that inform fisheries management. However, observer error may misidentify similar-looking shark species. This raises questions about the level of error that species misidentifications could introduce to estimates of species' life history parameters. This study addressed these questions using the Gre...
متن کاملEnvironmental Influences on Patterns of Vertical Movement and Site Fidelity of Grey Reef Sharks (Carcharhinus amblyrhynchos) at Aggregation Sites
We used acoustic telemetry to describe the patterns of vertical movement, site fidelity and residency of grey reef sharks (Carcharhinus amblyrhynchos) on the outer slope of coral reefs in Palau, Micronesia, over a period of two years and nine months. We tagged 39 sharks (mostly adult females) of which 31 were detected regularly throughout the study. Sharks displayed strong inter-annual residenc...
متن کاملInternational shark fin markets and shark management: an integrated market preference–cohort analysis of the blacktip shark (Carcharhinus limbatus)
The increasing demand for shark fins in Asia, and the publicity resulting from finning and discarding live sharks, has generated concern regarding the sustainability of the world’s shark populations. These concerns can be attributed to the shark’s life history, which is characterized by a pattern of slow growth, late maturity, few offspring, and long life, making populations vulnerable to overe...
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ژورنال
عنوان ژورنال: Journal of Fish Biology
سال: 2019
ISSN: 0022-1112,1095-8649
DOI: 10.1111/jfb.13957