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Why the Kanak Don’t Fear Sharks
Why the Kanak Don’t Fear Sharks: Myths as a Coherent but Dangerous Mirror of Nature Eric Clua, Jean Guiart ABSTRACT: This study focuses on the important role of sharks in the Melanesian mythology. Based on unpublished stories essentially originating from New Caledonia, we show how strong the links are between myths and the physical environment
Lemon sharks – live fast, die young
Published on 3 Aug, 2020 at 13:48 in Research | Viewed times | No Comments
News Release Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) 29. July 2020 — — — — — — — Risk-taking individuals are expected to grow better but also die faster than the less explorative individuals. Such trade-offs can maintain multiple phenotypes in a population by allowing individuals with different behavioural strategies to achieve comparable
Personality‐driven life history trade‐offs differ in two subpopulations of free‐ranging predators
Personality‐driven life history trade‐offs differ in two subpopulations of free‐ranging predators Félicie Dhellemmes, Jean‐Sébastien Finger, Matthew J. Smukall, Samuel H. Gruber, Tristan L. Guttridge, Kate L. Laskowski, Jens Krause ABSTRACT: Consistent individual differences in behaviour (i.e. personality) can be explained in an evolutionary context if they are favoured by life history trade‐offs as conceptualized in
The effects of digesting a urea-rich meal on North Pacific spiny dogfish
The effects of digesting a urea-rich meal on North Pacific spiny dogfish (Squalus acanthias suckleyi) J. Lisa Hoogenboom, Alyssa M. Weinrauch, Chris M. Wood, W. Gary Anderson ABSTRACT: Marine elasmobranchs are nitrogen-limited owing to the requirement of nitrogen for both somatic growth and urea-based osmoregulation, and due to the loss of urea across the gills
New mode of oviparous reproduction in sharks
Discovery of a new mode of oviparous reproduction in sharks and its evolutionary implications Nakaya, K., White, W.T. & Ho, H. ABSTRACT: Two modes of oviparity are known in cartilaginous fishes, (1) single oviparity where one egg case is retained in an oviduct for a short period and then deposited, quickly followed by another egg
Microplastics in demersal sharks of the North-East Atlantic
Investigating the presence of microplastics in demersal sharks of the North-East Atlantic Kristian J. Parton, Brendan J. Godley, David Santillo, Muhammad Tausif, Lucy C. M. Omeyer, Tamara S. Galloway ABSTRACT: Microplastic pollution is ubiquitous in the marine environment and is ingested by numerous marine species. Sharks are an understudied group regarding their susceptibility to microplastic
Global status and conservation potential of reef sharks
Global status and conservation potential of reef sharks MacNeil, M.A., Chapman, D.D., Heupel, M. et al. ABSTRACT: Decades of overexploitation have devastated shark populations, leaving considerable doubt as to their ecological status1,2. Yet much of what is known about sharks has been inferred from catch records in industrial fisheries, whereas far less information is available