4.7 Article

Junk food: A preliminary analysis of ingested marine debris by hawksbill Eretmochelys imbricata and olive ridley Lepidochelys olivacea sea turtles (Testudines: Cheloniidae) from the eastern coast of the United Arab Emirates

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MARINE POLLUTION BULLETIN
卷 173, 期 -, 页码 -

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PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.113073

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Marine pollution; Plastic pollution; Marine debris; Sea turtle; Gulf of Oman; United Arab Emirates

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The study revealed that hawksbill sea turtles ingested marine debris at higher frequencies, with plastics being the most predominant type of debris ingested. However, metallic fishing gear posed lethal hazards for both turtle species.
For the first time, the qualitative and quantitative characteristics of marine debris ingested by six hawksbill (Eretmochelys imbricata) and seven olive ridley (Lepidochelys olivacea) sea turtles from the Gulf of Oman coast of the United Arab Emirates were investigated. The numeric and gravimetric proportions of ingested marine debris obtained from the esophagus, stomach and intestines were quantified following categories of presumed sources, Marine Strategy Framework Directive (MSFD), rigidity, color and plastic polymer types. Marine debris was observed in 28.6% of olive ridley (x?: 2.00 items; 4.83 g) and 83.3% of hawksbill specimens (x?: 6.00 +/- 2.32 items; 0.32 +/- 0.24 g). Overall, the results of this preliminary study suggest that hawksbill sea turtles were ingesting marine debris at higher frequencies and that plastics were observed to be the most predominant debris ingested. However, non-plastic rubbish, particularly metallic fishing gear (fish hooks and fish traps), were observed to present lethal hazards for both species.

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