Frequency of Foraging by Gravid Green Turtles (Chelonia mydas) at Raine Island, Great Barrier Reef

2001 ◽  
Vol 35 (3) ◽  
pp. 500 ◽  
Author(s):  
Anton D. Tucker ◽  
Mark A. Read
Keyword(s):  
Great Barrier Reef ◽  
Chelonia Mydas ◽  
Barrier Reef ◽  
Green Turtles

The green turtle, Chelonia mydas, in Queensland: breeding males in the southern Great Barrier Reef

1993 ◽  
Vol 20 (4) ◽  
pp. 513 ◽  
Author(s):  
CJ Limpus
Keyword(s):  
Great Barrier Reef ◽  
Green Turtle ◽  
Carapace Length ◽  
Chelonia Mydas ◽  
Barrier Reef ◽  
Adult Males ◽  
Green Turtles ◽  
Adult Females ◽  
Breeding Seasons ◽  
Slow Growing

Breeding male green turtles, Chelonia mydas, at any one courtship area in the southern Great Barrier Reef mate with females that will nest on rookeries spread throughout the region. In comparison with the breeding females from the same breeding unit, the males are smaller in curved carapace length, and a higher proportion of males remigrate for additional breeding seasons at 1-2-year intervals. Like the adult females, adult males are slow-growing, averaging 0.046 cm year-1. Each male appears to display a fidelity to a particular courtship area, to which it returns in successive breeding migrations. At the conclusion of the courtship period, the males disperse to widely scattered feeding areas.

scholarly journals Closing the gap: mixed stock analysis of three foraging populations of green turtles (Chelonia mydas) on the Great Barrier Reef

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5651
Author(s):  
Karina Jones ◽  
Michael Jensen ◽  
Graham Burgess ◽  
Johanna Leonhardt ◽  
Lynne van Herwerden ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Spatial Ecology ◽  
New Caledonia ◽  
Relative Proportion ◽  
Chelonia Mydas ◽  
Barrier Reef ◽  
Green Turtles ◽  
Mixed Stock Analysis ◽  
Stock Analysis ◽  
Mixed Stock

A solid understanding of the spatial ecology of green turtles (Chelonia mydas) is fundamental to their effective conservation. Yet this species, like many marine migratory species, is challenging to monitor and manage because they utilise a variety of habitats that span wide spatio-temporal scales. To further elucidate the connectivity between green turtle rookeries and foraging populations, we sequenced the mtDNA control region of 278 turtles across three foraging sites from the northern Great Barrier Reef (GBR) spanning more than 330 km: Cockle Bay, Green Island and Low Isles. This was performed with a newly developed assay, which targets a longer fragment of mtDNA than previous studies. We used a mixed stock analysis (MSA), which utilises genetic data to estimate the relative proportion of genetically distinct breeding populations found at a given foraging ground. Haplotype and nucleotide diversity was also assessed. A total of 35 haplotypes were identified across all sites, 13 of which had not been found previously in any rookery. The MSA showed that the northern GBR (nGBR), Coral Sea (CS), southern GBR (sGBR) and New Caledonia (NC) stocks supplied the bulk of the turtles at all three sites, with small contributions from other rookeries in the region. Stock contribution shifted gradually from north to south, although sGBR/CS stock dominated at all three sites. The major change in composition occured between Cockle Bay and Low Isles. Our findings, together with other recent studies in this field, show that stock composition shifts with latitude as a natural progression along a coastal gradient. This phenomenon is likely to be the result of ocean currents influencing both post-hatchling dispersal and subsequent juvenile recruitment to diverse coastal foraging sites.

Migration of green (Chelonia mydas) and loggerhead (caretta caretta) turtles to and from eastern Australian rookeries

1992 ◽  
Vol 19 (3) ◽  
pp. 347 ◽  
Author(s):  
CJ Limpus ◽  
JD Miller ◽  
CJ Paramenter ◽  
D Reimer ◽  
N McLachlan ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Indigenous People ◽  
Chelonia Mydas ◽  
Caretta Caretta ◽  
Commercial Fishing ◽  
High Fidelity ◽  
Barrier Reef ◽  
Migratory Behaviour ◽  
Green Turtles ◽  
Feeding Ground

Feeding-ground captures of green (Chelonia mydas) and loggerhead (Caretta caretta) turtles tagged while nesting at eastern Australian rookeries over a 21-year period are summarised. These turtles which nest in the Great Barrier Reef region range widely throughout the Arafura and Coral seas. The tag recoveries include many from turtles that live in neighbouring countries and migrate to breed in Australia. The breeding female shows a high fidelity to her home feeding ground as well as to her nesting beach. Most recaptures of the green turtles occurred during hunting for food by indigenous people while most recaptures of loggerhead turtles were incidental captures in commercial fishing activities. Migratory behaviour, imprinting and navigation are discussed.

Coastal bays and coral cays: Multi-element study of Chelonia mydas forage in the Great Barrier Reef (2015–2017)

2020 ◽  
Vol 740 ◽  
pp. 140042 ◽  
Author(s):  
Colette R. Thomas ◽  
William W. Bennett ◽  
Clement Garcia ◽  
Andrew Simmonds ◽  
Carol Honchin ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Chelonia Mydas ◽  
Barrier Reef ◽  
Coastal Bays ◽  
Element Study

Effect-based approach for screening of chemical mixtures in whole blood of green turtles from the Great Barrier Reef

2018 ◽  
Vol 612 ◽  
pp. 321-329 ◽  
Author(s):  
Gülsah Dogruer ◽  
Liesbeth Weijs ◽  
Janet Yat-Man Tang ◽  
Henner Hollert ◽  
Marjolijn Kock ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Whole Blood ◽  
Barrier Reef ◽  
Chemical Mixtures ◽  
Green Turtles

Evidence of antibiotic resistance in Enterobacteriales isolated from green sea turtles, Chelonia mydas on the Great Barrier Reef

2017 ◽  
Vol 120 (1-2) ◽  
pp. 18-27 ◽  
Author(s):  
Md. Shamim Ahasan ◽  
Jacqueline Picard ◽  
Lisa Elliott ◽  
Robert Kinobe ◽  
Leigh Owens ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Great Barrier Reef ◽  
Sea Turtles ◽  
Chelonia Mydas ◽  
Barrier Reef ◽  
Green Sea Turtles
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