Behavioral responses to encounter of fishing boats in wandering albatrosses

Ecology and Evolution
Julien ColletHenri Weimerskirch

Abstract

Animals are attracted to human food subsidies worldwide. The behavioral response of individuals to these resources is rarely described in detail, beyond chances of encounters. Seabirds for instance scavenge in large numbers at fishing boats, triggering crucial conservation issues, but how the response to boats varies across encounters is poorly known. Here we examine the behavioral response of wandering albatrosses (Diomedea exulans), equipped with GPS tags, to longline fishing boats operating near their colony for which we had access to vessel monitoring system data. We distinguish between encounters (flying within 30 km of a boat) and attendance behavior (sitting on the sea within 3 km of a boat), and examine factors affecting each. In particular, we test hypotheses that the response to encountered boats should vary with sex and age in this long-lived dimorphic species. Among the 60% trips that encountered boats at least once, 80% of them contained attendance (but attendance followed only 60% of each single encounter). Birds were more attracted and remained attending longer when boats were hauling lines, despite the measures enforced by this fleet to limit food availability during operations. Sex and age of birds had low infl...Continue Reading

References

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May 18, 2016·The Journal of Animal Ecology·Tina CornioleyHenri Weimerskirch

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Citations

Sep 25, 2019·PloS One·Alexandre CorbeauHenri Weimerskirch
Jun 10, 2017·Conservation Biology : the Journal of the Society for Conservation Biology·H WeimerskirchS C Patrick
Jan 29, 2020·Proceedings of the National Academy of Sciences of the United States of America·Henri WeimerskirchSamantha C Patrick
Nov 10, 2018·Environmental Pollution·Airam RodríguezAndré Chiaradia
Jun 7, 2021·The Journal of Animal Ecology·Florian OrgeretPierre A Pistorius

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