نتایج جستجو برای: sphyrna lewini
تعداد نتایج: 205 فیلتر نتایج به سال:
To describe the growth pattern of bonnethead shark (Sphyrna tiburo) in Gulf Mexico, a von Bertalanffy (VB) model has been automatically fit, which indicated single−phase continuous without oscillations, though this would generate biases if hypothesis is not confirmed. The objective research was to S. tiburo under multimodel approach based on information theory and contrasting models (VB, Gomper...
Wildlife provisioning is popular, economically valuable, and a rapidly growing part of marine tourism, with great potential to benefit conservation. However, it remains controversial due limited understanding its implications on the behavior ecology target species. In this study, we modeled how various abiotic biotic factors influenced hammerhead sharks’ ( Sphyrna mokarran ) use recreational di...
Evidence for severe declines in large predatory fishes is increasing around the world. Because of its long history of intense fishing, the Mediterranean Sea offers a unique perspective on fish population declines over historical timescales. We used a diverse set of records dating back to the early 19th and mid 20th century to reconstruct long-term population trends of large predatory sharks in ...
Gillnets are size-selective fishing gears commonly used by industrial and small-scale fishers, so understanding selectivity can aid fisheries management identifying suitable mesh sizes to optimize catches of target species while reducing bycatch. Few size parameters have been estimated for sharks, with even fewer rays. Size selection were seven sharks two rays from the Queensland East Coast Ins...
There is growing interest in the mating systems of sharks and their relatives (Class Chondrichthyes) because these ancient fishes occupy a key position in vertebrate phylogeny and are increasingly in need of conservation due to widespread overexploitation. Based on precious few genetic and field observational studies, current speculation is that polyandrous mating strategies and multiple patern...
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