Supplemental feeding and other anthropogenic threats to green turtles (Chelonia mydas) in the Canary Islands

被引：21

作者：

Monzon-Argueello, Catalina ^{[1
,2
]}

Cardona, Luis ^{[3
,4
]}

Calabuig, Pascual ^{[5
]}

Camacho, Maria ^{[6
]}

Crespo-Picazo, Jose Luis ^{[8
]}

Garcia-Parraga, Daniel ^{[8
]}

Mayans, Santiago ^{[9
]}

Luzardo, Octavio P. ^{[6
,7
]}

Oros, Jorge ^{[10
]}

Varo-Cruz, Nuria ^{[2
]}

机构：

[1] Univ Las Palmas Gran Canaria, EcoAqua Univ Inst, Ctra Taliarte S-N, Telde 35200, Las Palmas, Spain

[2] Asociac Desarrollo Sostenible & Conservac Biodive, C Blas de Lezo 55,1 G, Aguimes 35118, Las Palmas, Spain

[3] Univ Barcelona, Fac Biol, IRBio, Avda Diagonal 643, E-08028 Barcelona, Spain

[4] Univ Barcelona, Fac Biol, Dept Evolutionary Biol Ecol & Environm Sci, Avda Diagonal 643, E-08028 Barcelona, Spain

[5] Tafira Wildlife Rescue Ctr, Ctra Ctr Km 7, Las Palmas Gran Canaria 35017, Las Palmas, Spain

[6] Univ Las Palmas Gran Canaria, Res Inst Biomed & Hlth Sci IUIBS, Toxicol Unit, Las Palmas Gran Canaria, Spain

[7] Spanish Biomed Res Ctr Physiopathol Obes & Nutr C, Madrid, Spain

[8] Fdn Oceanog, Vet Serv, C Eduardo Primo Yufera 1B, Valencia 46013, Spain

[9] La Tahonilla Wildlife Rescue Ctr, C Las Macetas S-N, San Cristobal De La Lagu 38108, Santa Cruz De T, Spain

[10] Univ Las Palmas Gran Canaria, Vet Fac, Trasmontana S-N, Arucas 35416, Las Palmas, Spain

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2018年 / 621卷

关键词：

East Atlantic; Mitochondrial DNA; Stable isotopes; Satellite tracking; Biochemistry; Pollutants; LOGGERHEAD SEA-TURTLES; PERSISTENT ORGANIC POLLUTANTS; CARETTA-CARETTA; MITOCHONDRIAL-DNA; STABLE-ISOTOPES; ORGANOCHLORINE CONTAMINANTS; HABITAT USE; ERETMOCHELYS-IMBRICATA; INORGANIC POLLUTANTS; POPULATION-STRUCTURE;

D O I：

10.1016/j.scitotenv.2017.10.126

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Green turtles are found in the waters of the Canary Islands but little is known about the ecology and anthropogenic pressures that threaten them. Our results have revealed that juvenile green turtles, ranging in curve carapace length from 26.9-81.0 cm, are regularly found in the archipelago and originate from rookeries in both the eastern and western Atlantic. Photo-identification and satellite tracking showed high levels of site fidelity to coastal foraging grounds associated with seagrass meadows, but stable isotope analysis indicated animal-based omnivorous diets after settlement on the continental shelf, with no increase in the consumption of macrophytes as the turtles grew. Most turtles exhibited high levels of some blood biochemical markers associated with a high consumption of proteins and fat. In addition, we determined levels of some organic and inorganic pollutants. Supplemental feeding may also contribute to explain the high prevalence of hooking and boat strikes in the green turtles brought to wildlife rescue centers as compared with loggerhead turtles. Regulatory measures and surveillance should be urgently implemented in order to improve the status of the species in the archipelago. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1000 / 1011

页数：12

共 99 条

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