Responses of the southern stingray (Dasyatis americana) and the nurse shark (Ginglymostoma cirratum) to permanent magnets

Autor:	Patrick H. Rice, Eric M. Stroud, Craig P. O’Connell, Nicole C. Simuro, Daniel C. Abel
Rok vydání:	2010
Předmět:	biology Physiology Zoology Dasyatis Anatomy Aquatic Science Southern stingray Nurse shark Oceanography biology.organism_classification
Zdroj:	Marine and Freshwater Behaviour and Physiology. 43:63-73
ISSN:	1029-0362 1023-6244
DOI:	10.1080/10236241003672230
Popis:	The behavioral responses of free-swimming, wild southern stingrays (Dasyatis americana) and nurse sharks (Ginglymostoma cirratum) to permanent magnets were evaluated in the Florida Keys, USA. Animals were attracted to a baited magnetic treatment board consisting of two 15 cm × 10 cm × 5 cm grade C8 Barium-Ferrite (empirically, BaFe12O19) permanent magnets producing a flux of 950 gauss at their surface and a baited procedural control board containing two smooth nonmagnetized clay bricks. In the presence of permanent magnets, D. americana and G. cirratum demonstrated a significantly greater number of avoidance behaviors away from the magnet side of the apparatus, while both species fed a significantly greater number of times from the non-magnetized procedural control side. Thus, D. americana and G. cirratum showed sensitivity to a magnetic field and were successfully repelled from baited areas containing magnets. The results from the current study suggest that the use of grade C8 Barium-Ferrite permanent ma...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d934e4ea31d668869494872a92718799 https://doi.org/10.1080/10236241003672230 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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