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Canid attacks on sea turtles along the Northeastern Brazilian Coast

Published online by Cambridge University Press:  04 March 2024

Isadora Campos de Almeida
Affiliation:
Grupo de Estudo e Pesquisa em Organismos Aquáticos, Faculdade Pio X, Av. Tancredo Neves, 5655, 49.095-000, Aracaju, SE, Brazil
Rafaelle Monteiro Nunes Messenger
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil
Fabiola Fonseca Almeida Gomes
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil
Davi Emanuel Ribeiro de Sousa
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil Programa de Pós-Graduação em Ciências Animais, Universidade de Brasília, qd.606-607, 70.910-900, Brasília, DF, Brazil
Rodolfo de França Alves
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil
Isis Chagas de Almeida
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Rua da Mangueira, s/n, 58.297-000, Rio Tinto, PB, Brazil
Jociery Einhardt Vergara Parente
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil
Daniel Alvares Silveira de Assis
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil
João Carlos Gomes Borges*
Affiliation:
Fundação Mamíferos Aquáticos, Chácara Anjo Gabriel, Estrada de Matapuã, 411, 49.100-000, São Cristóvão, SE, Brazil Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Rua da Mangueira, s/n, 58.297-000, Rio Tinto, PB, Brazil
*
Corresponding author: João Carlos Gomes Borges; Email: jcgborges@hotmail.com

Abstract

The aim of the present study was to report canid attacks on sea turtles in northeastern Brazil. The study was conducted on the Sergipe-Alagoas Basin coastline between March 2010 and October 2019. Injured-stranded sea turtles or carcasses were recorded through systematic beach monitoring. The specimens were submitted for clinical or postmortem assessments, providing evidence for the identification of injuries caused by canids. In the study period, 9841 stranded sea turtles were recorded, with the diagnosis of canid attacks in 55 (0.55%) events. Lepidochelys olivacea was the species with the largest number of events (90.90%), followed by Chelonia mydas (7.27%), and Caretta caretta (1.81%). The attacked sea turtles were clinically healthy, with a good body score and no apparent diseases; most were in the reproductive stage. The injuries were mainly found on the front flippers, with considerable loss of musculature affecting the brachial plexus, with the rupture of large blood vessels, and in some cases, exposure of the humerus or oesophagus. Thus, these events hampered the reproductive cycle, limiting the egg-laying process and preventing the hatching of hundreds of new turtles. Therefore, mitigating measures should be implemented, addressing the consequences of abandoning pets and their unsupervised presence on beaches.

Type
Research Article
Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of Marine Biological Association of the United Kingdom

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