Potential threats facing a globally important population of the magnificent frigatebird Fregata magnificens

Tropical Zoology
By: , and 

Links

Abstract

Tracking of seabirds has been used to identify foraging hotspots, migratory routes and to assess at-sea threats facing populations. One such threat is the potential negative interaction between seabirds and fisheries through incidental by-catch. In 2012, 60 magnificent frigatebirds Fregata magnificens were found dead, entangled in fishing line, at the globally important breeding site in the British Virgin Islands (BVI). To assess the potential relationship between foraging behaviour and fishing activity, data loggers were deployed on breeding magnificent frigatebirds to record foraging movements. In addition, a survey of local fishers was conducted to assess the scale of incidental by-catch. We recorded 28 complete foraging trips from GPS and GPS-GSM loggers, and 1758 PTT locations. Birds travelled up to 3.3–1067 km from their breeding colony and entered the waters of 10 neighbouring territories. A high percentage of fishers (93% n = 28) reported catching at least one seabird annually, of which the most common were magnificent frigatebirds and brown boobies Sula leucogaster. There are estimated to be at least 1112 vessels in the recreational and artisanal fishing fleets of BVI and its neighbouring islands. Thus, this substantial fishery may have potentially profound effects on seabird populations in the region.

Publication type Article
Publication Subtype Journal Article
Title Potential threats facing a globally important population of the magnificent frigatebird Fregata magnificens
Series title Tropical Zoology
DOI 10.1080/03946975.2019.1682352
Volume 32
Issue 4
Year Published 2019
Language English
Publisher Taylor and Francis
Contributing office(s) Coop Res Unit Atlanta
Description 14 p.
First page 188
Last page 201
Google Analytics Metrics Metrics page
Additional publication details