Pan-tropical Wedge-tailed Shearwaters is a good species to study geographical variation in ingested plastics

Jenn Lavers (Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia) and colleagues report on plastics ingested by Wedge-tailed Shearwaters Ardenna pacifica on Lord Howe Island in the Marine Pollution Bulletin.

The paper’s abstract follows:

“Annual rates of plastic production have been increasing rapidly since the 1950s. Inadequate or improper disposal of plastic products has contributed to a significant increase in plastic debris in the world's oceans and a corresponding increase in the number of species negatively affected by this debris. Here we investigate trends in the type, amount, and colour of ingested plastic over time, and determine whether ingested plastic contributes to reduced health of Wedge-tailed Shearwaters (Ardenna pacifica) on Lord Howe Island, Australia. The results show no clear influence of ingested plastic on body condition, while trends in the prevalence, number, and mass of plastic items ingested per bird during 2005 and 2013–2018 were more variable. There was some evidence adult birds are selecting plastic by colour. Future monitoring of this pan-tropical seabird would provide a unique opportunity to gather data from multiple sites, concurrently.”

Wedge-tailed Shearwaters

Reference:

Lavers, J.L., Ian Hutton, I & Bond, A.L. 2018.  Ingestion of marine debris by Wedge-tailed Shearwaters (Ardenna pacifica) on Lord Howe Island, Australia during 2005–2018.  Marine Pollution Bulletin 133: 616-621.

John Cooper, ACAP Information Officer, 28 June 2018