Incidental catch of loggerhead sea turtles ( Caretta caretta ) along the Sicilian coasts by longline fishery

PeerJ

article

Santo Caracappa¹  Maria Flaminia Persichetti¹  Antonio Piazza¹  Giulia Caracappa¹  Antonino Gentile¹  Sandra Marineo¹  Daniela Crucitti¹  Marco Arculeo² 

[1] Istituto Zooprofilattico Sperimentale della Sicilia;Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, University of Palermo

关键词: Caretta caretta;    Loggerhead turtle;    Hooks;    Strandings;    Incidental take;    Sicily;    Longline fishing;    Mediterranean Sea;   

DOI  :  10.7717/peerj.5392

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

It has been estimated that 44,000 Caretta caretta turtles die every year due to anthropomorphic activity in the Mediterranean Sea, and that longline fishing is one of the most significant causes of mortality. A total of 482 specimens of C. caretta were rescued from different parts of the Sicilian coast (Mediterranean Sea) from 2014 to 2016. The most numerous stranding was recorded during the spring and summer seasons, mainly along the north and eastern coasts of Sicily. The curved carapace length for all the specimens ranged from between 19 and 95 cm and most of these were young or sub adults. The highest number of strandings was recorded in 2014 and 2015, with 206 and 169 individuals, respectively. A total of 66 live specimens out of 239 were successfully rehabilitated and released after surgery or drug therapy; fishing hooks were found in 129 specimens in different parts of the digestive tract with greater frequency in the oesophagus (47.3%) followed by the gut (24.8%), stomach (14.7%), and mouth (13.2%). This paper will highlight the incidence of the incidental catch by longline fishing of C. caretta along the Sicilian coasts and also relate the size of ingested hooks to the size of examined specimens.

【 授权许可】

CC BY