Primeiro Registro do encalhe de um boto cinza, Sotalia fluviatilis GERVAIS, 1853, com vestígios de nylon monofilamento em tecido cicatrizado do rostro

Abstract

Rare are the records of small cetaceans that survive nets on fishing tackles. This assertion is reinforced by the small number of dolphins and porpoises released alive from gills, and by the low frequency of healed wounds related to interaction with fishing nets, found in dead stranded animals. In this work, an unprecedented record is made of the stranding of a specimen of gray boto, Sotalia fluviatilis, on the coast of the State of Ceará, presenting evidence of survival to a gillnet in a fishing net. In November 2000, a 1300mm gray juvenile male was found dead at Pecém Beach, São Gonçalo do Amarante, 65 km from Fortaleza. The animal had all the teeth hatched in the maxilla and mandible and the stomach contents were a pasty substance of light color, indicating that it could be an infant. During the ectoscopy performed, recent marks were observed caused by fishing nets along the rostrum, as well as remains of nylon threads inserted on the sides of the rostrum, close to the melon. It was first hook. Records of this type support previous studies in the region and show ______verified the presence of nine nylon threads (monofilament, 70 mm thick) inserted in the fabric that surrounds the rostrum, crossing it from side to side. Apparently the animal was captured in a fishing device and managed to escape, later dying in another gillnet. Traces of the fishing apparatus remained inserted in the tissue, after the healing of the wounds caused by the small cetaceans that occupy a habitat close to the coast of Ceará are subject to a greater interaction with artisanal fishing, requiring urgent actions to regulate artisanal fishing. aimed at protecting these animals.