scholarly journals Spatial ecology of critically endangered hawksbill turtles Eretmochelys imbricata: implications for management and conservation

2012 ◽  
Vol 450 ◽  
pp. 181-194 ◽  
Author(s):  
AR Gaos ◽  
RL Lewison ◽  
BP Wallace ◽  
IL Yañez ◽  
MJ Liles ◽  
...  
2016 ◽  
Vol 67 (8) ◽  
pp. 1263 ◽  
Author(s):  
Xavier Hoenner ◽  
Scott D. Whiting ◽  
Mark Hamann ◽  
Colin J. Limpus ◽  
Mark A. Hindell ◽  
...  

Despite being critically endangered, the at-sea behaviour of hawksbill turtles (Eretmochelys imbricata) remains insufficiently understood to support a global conservation strategy. Habitat location and spatial use are poorly documented, which is particularly true for the globally important Australian hawksbill population. We equipped 10 adult female hawksbill turtles nesting on Groote Eylandt, northern Australia, with Fastloc GPS and Argos satellite transmitters. We quantified fine-scale habitat use and area-restricted search behaviour, and located potential feeding and developmental habitats by simulating hatchling turtle dispersal patterns by using a particle-tracking hydrological model. During the breeding season, females mostly remained near their nesting site. Post-breeding, all turtles migrated to foraging sites on the Australian continental shelf, primarily in the Gulf of Carpentaria in coastal seagrass pastures, but also offshore near coral-reef platforms. The distribution of adult foraging grounds was similar to simulated dispersal patterns of hatchling turtles from distant rookeries, thus highlighting the ecological significance of the Gulf of Carpentaria for hawksbill turtles. Although this hawksbill turtle population is likely to be endemic to Australian waters, national and international conservation initiatives are required to mitigate sources of anthropogenic mortality (e.g. illegal tortoise-shell trade, incidental captures in fishing gear, marine debris, seabed mining exploitation).


2021 ◽  
Vol 27 ◽  
pp. e01540
Author(s):  
Lourdes Martinez-Estevez ◽  
Juan Pablo Cuevas Amador ◽  
Felipe Cuevas Amador ◽  
Kelly M. Zilliacus ◽  
Anuar Martinez Pacheco ◽  
...  

2017 ◽  
Vol 4 (8) ◽  
pp. 170153 ◽  
Author(s):  
Alexander R. Gaos ◽  
Rebecca L. Lewison ◽  
Michael P. Jensen ◽  
Michael J. Liles ◽  
Ana Henriquez ◽  
...  

The complex processes involved with animal migration have long been a subject of biological interest, and broad-scale movement patterns of many marine turtle populations still remain unresolved. While it is widely accepted that once marine turtles reach sexual maturity they home to natal areas for nesting or reproduction, the role of philopatry to natal areas during other life stages has received less scrutiny, despite widespread evidence across the taxa. Here we report on genetic research that indicates that juvenile hawksbill turtles ( Eretmochelys imbricata ) in the eastern Pacific Ocean use foraging grounds in the region of their natal beaches, a pattern we term natal foraging philopatry. Our findings confirm that traditional views of natal homing solely for reproduction are incomplete and that many marine turtle species exhibit philopatry to natal areas to forage. Our results have important implications for life-history research and conservation of marine turtles and may extend to other wide-ranging marine vertebrates that demonstrate natal philopatry.


PLoS ONE ◽  
2018 ◽  
Vol 13 (9) ◽  
pp. e0203257 ◽  
Author(s):  
Mark Chatting ◽  
David Smyth ◽  
Ibrahim Al-Maslamani ◽  
Jeffrey Obbard ◽  
Mehsin Al-Ansi ◽  
...  

2019 ◽  
Vol 12 (3) ◽  
pp. 353-356
Author(s):  
Shreya M. Banerjee ◽  
Lisa M. Komoroske ◽  
Amy Frey ◽  
Brittany Hancock-Hanser ◽  
Phillip A. Morin ◽  
...  

2020 ◽  
Vol 10 (23) ◽  
pp. 12870-12882
Author(s):  
Igor Salles‐Oliveira ◽  
Taís Machado ◽  
Karina Rodrigues da Silva Banci ◽  
Selma M. Almeida‐Santos ◽  
Maria José de J. Silva

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