A Basic Anatomical Structure and Dissection techniques for Cownose rays (Rhinoptera bonasus)

نویسندگان

چکیده

The cownose ray, Rhinoptera bonasus, is currently listed as vulnerable and threatened species by the IUCN Red List due to overfishing bycatch in worldwide resulted declines of steep population 30-49% only 43 years. We aimed present suitable dissection methods for a necropsy ray with large, rhomboid-shaped wing-like pectoral disc compressed dorsoventrally using specific approach observe external internal anatomy. fish were obtained from public aquarium after natural death dissected four incision area open chondrocranium, gills, pericardial cavity pleuroperitoneal cavity. dorsal surface body completely naked smooth, greenish-brown colored, contrast ventral white. liver fills most covers esophagus, stomach, duodenum, valvular intestine, spleen, kidney uterus. intestine or spiral valve one largest organs digestive system. In rays, left ovary developed functional; therefore, ovaries specimens are located on median line, close cranial end cavity, caudal stomach. conclusion, presented techniques will enable examine anatomy rays contribute organs.

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ژورنال

عنوان ژورنال: Journal of anatolian environmental and animal sciences

سال: 2022

ISSN: ['2548-0006']

DOI: https://doi.org/10.35229/jaes.1177624