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Mar Pollut Bull. 2019 Apr;141:79-83. doi: 10.1016/j.marpolbul.2019.02.030. Epub 2019 Feb 19.

Stranded whale shark (Rhincodon typus) reveals vulnerability of filter-feeding elasmobranchs to marine litter in the Philippines.

Author information

1
Senior High School Department, Malayan Colleges Mindanao, Davao City, Philippines; Regional Integrated Coastal Resource Management Center (RIC-XI), Davao Oriental State College of Science and Technology, Mati City, Davao Oriental, Philippines; Institute of Aquatic and Applied Sciences, Davao del Norte State College, Panabo City, Philippines. Electronic address: nas.abreo@gmail.com.
2
D' Bone Collector Museum, Inc., Davao City, Philippines.
3
Graduate School, Department of Natural Sciences, College of Arts and Sciences, University of Southeastern Philippines, Davao City, Philippines.

Abstract

Marine litter has adversely affected many marine species. However, information on its impacts on filter-feeding elasmobranchs (such as the whale shark, Rhinocodon typus) is scarce. The Philippines is an essential habitat for whale sharks, and the lack of data on marine litter and its effects on these organisms in the country is concerning. Beached carcasses present opportunities to provide useful data and insights on the issue. On the 7th August 2018, a live whale shark was found beached in Tagum City, the Philippines, and it eventually died. As part of the post-mortem examination, the gastrointestinal tract and gills of the specimen were examined. Marine litter was found lodged in its gills, and pieces of plastic were found inside its stomach (including several pieces likely from local sources within the Philippines). This study is the first documentation of litter in whale sharks from the Philippines, confirming their vulnerability to marine litter.

KEYWORDS:

Ingestion; Marine debris; Marine pollution; Philippines; Rhincodon typus; Stranding; Whale shark

PMID:
30955783
DOI:
10.1016/j.marpolbul.2019.02.030
[Indexed for MEDLINE]

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