منابع مشابه
Sharks in danger.
Many shark populations are in danger of extinction as a direct result of man's activities. A change in attitude and a greater understanding of species' requirements are needed to prevent further destruction and replenish numbers, thus sustaining trade, fisheries and sport activity.
متن کاملFreshwater sharks and rays
with an animal that is cognitively so capable, but has a brain anatomy that is so vastly different from us mammals, you start asking questions about our core concepts on the relationship between brain structure and function. So, I came to realize that very different kinds of brains can generate very similar kinds of mental operations. And when you realize this, you start asking yourself how exa...
متن کاملCatching Fish and Avoiding Sharks
Although researchers agree that the first 5 years of life are critical for children’s developing executive functions (EFs), further advances are hindered by a lack of consensus on the design and selection of developmentally appropriate EF tasks for young children. Given this debate, well-established adult measures of EF routinely have been adapted for young children. Given young children’s comp...
متن کاملSharks senses and shark repellents.
Despite over 70 years of research on shark repellents, few practical and reliable solutions to prevent shark attacks on humans or reduce shark bycatch and depredation in commercial fisheries have been developed. In large part, this deficiency stems from a lack of fundamental knowledge of the sensory cues that drive predatory behavior in sharks. However, the widespread use of shark repellents is...
متن کاملConservation Genetics of Basking Sharks
Acknowledgements: The authors wish to thank the following for their help and assistance at various stages during the fieldwork, data analysis and report writing:Deitsch and the Shark Trust for the use of the basking shark photograph (front cover). We should also like to thank D. all of whom have kindly supplied us with basking shark tissue samples. This publication (excluding the logo) may be r...
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ژورنال
عنوان ژورنال: Bulletin of the British Museum (Natural History) Geology
سال: 1966
ISSN: 0007-1471
DOI: 10.5962/p.150189