South Pacific

Deux mille milliards de déchets en plastique flottent au milieu du Pacifique

Cette grande «décharge naturelle» concentre 80.000 tonnes de plastique sur une surface équivalente à trois fois celle de la France.

23 March 2018

Marine Macrophytes and Plastics Consumed by Green Turtles (Chelonia mydas) in Hong Kong, South China Sea Region

This is the first identification of marine macrophytes consumed by green turtles in Hong Kong, South China Sea: 6 red algae species (Pterocladiella tenuis, Gelidium pusillum, Chondrus ocellatus, Gracilaria chorda, Grateloupia filicina, and Amansia glomerata), 1 brown alga species (Lobophora variegata), and 1 sea grass (Halophila ovalis) were identified. Plastics and other foreign materials were also found in the stomach contents of 2 of the 8 individuals sampled.

14 September 2018

Plastic patch in Pacific Ocean growing rapidly, study shows

A collection of plastic afloat in the Pacific Ocean is growing rapidly, according to a new scientific estimate.

BBC

22 March 2018

'Great Pacific garbage patch' sprawling with far more debris than thought

The patch of detritus is more than twice the size of France and is up to 16 times larger than previously estimated

22 March 2018

Genetic Structure and Diversity of Green Sea Turtle (Chelonia mydas) from South China Sea inferred by mtDNA control region sequence

We analyzed 88 control region sequences of green sea turtle (Chelonia mydas) from around Hainan Island in the South China Sea. These sequences had a length of 489 bp and revealed 8 mtDNA haplotypes of which four haplotypes (CMC1, CMC4, CMC7, and CMC8) had not been discovered before. Haplotype diversity (h) and nucleotide diversity (π) were 0.45 ± 0.054 and 0.0035 ± 0.0014, respectively. Neighbor-Joining tree based on control region sequences revealed that genetic relationship between green sea turtles from the South China Sea and from Japan Sea were very close.

13 September 2018

Global analysis of the effect of local climate on the hatchling output of leatherback turtles. Scientific reports

The most recent climate change projections show a global increase in temperatures along with precipitation changes throughout the 21st century. However, regional projections do not always match global projections and species with global distributions may exhibit varying regional susceptibility to climate change. Here we show the effect of local climatic conditions on the hatchling output of leatherback turtles (Dermochelys coriacea) at four nesting sites encompassing the Pacific, Atlantic and Indian Oceans. We found a heterogeneous effect of climate.

13 September 2018

Global Distribution of Two Fungal Pathogens Threatening Endangered Sea Turtles

Nascent fungal infections are currently considered as one of the main threats for biodiversity and ecosystem health, and have driven several animal species into critical risk of extinction. Sea turtles are one of the most endangered groups of animals and only seven species have survived to date. Here, we described two pathogenic species, i.e., Fusarium falciforme and Fusarium keratoplasticum, that are globally distributed in major turtle nesting areas for six sea turtle species and that are implicated in low hatch success.

13 September 2018

Genetic diversity and phylogeography of hawksbill turtle in the Persian Gulf

Genetic diversity and phylogeography of Hawksbill sea turtle was studied by using sequencing of the mitochondrial DNA (D-loop and tRNA pro region). 45 dead embryos were collected from the Qeshm (25 samples) and Kish Islands (20 samples) in the Persian Gulf. Analysis of sequence diversity showed over 890 bp of the mtDNA D-loop and tRNA pro region revealed 5 polymorphism sites and 7 haplotypes. Two new haplotypes were submitted on NCBI gene bank as Iran3 with GU997696 accession number and Iran7 with JN627023 accession number.

13 September 2018

Easter Island votes for world’s newest marine reserve

The Rapa Nui Marine Protected Area encompasses 740,000 square kilometers (286,000 square miles) of Pacific Ocean surrounding Easter Island, or Rapa Nui.

27 February 2018

Green turtles in north Queensland are mainly all female and scientists are concerned for the species' future

Almost the entire green turtle population in parts of the northern Great Barrier Reef is now female, and scientists are concerned about their future.

09 January 2018