Gastric lavage as a non-lethal method for stingray (Myliobatiformes) diet sampling

Autor:	Chantel Elston, Paul D. Cowley, RG von Brandis
Rok vydání:	2015
Předmět:	Myliobatiformes biology medicine.medical_treatment Urogymnus asperrimus Stomach digestive oral and skin physiology Zoology Anatomy Aquatic Science biology.organism_classification Gastric lavage Visual evidence medicine.anatomical_structure Stingray medicine Ecology Evolution Behavior and Systematics
Zdroj:	African Journal of Marine Science. 37:415-419
ISSN:	1814-2338 1814-232X
DOI:	10.2989/1814232x.2015.1076519
Popis:	Understanding the trophic interactions of ecologically important mesopredators such as Myliobatiformes (stingrays) is vital, but, given their susceptibility to overexploitation, the collection of stomach contents for dietary analysis necessitates the use of non-lethal methods. We provide a detailed method of using gastric lavage to collect stomach contents from the ‘Vulnerable’ porcupine ray Urogymnus asperrimus at the St Joseph Atoll of the Amirantes Group, Seychelles. Rays were captured by hand, inverted and restrained while a plastic hose, connected to a bilge pump, was inserted into the stomach to flush out the contents. A high percentage (94.5%) of gastric lavage attempts resulted in the collection of stomach contents. There was no visual evidence of stress or short-term, post-release mortality and, given the success and relative ease of this technique, we conclude that the described method of gastric lavage is an effective, non-lethal means of obtaining stomach contents from stingrays.
Databáze:	OpenAIRE
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