Olfactory foraging in Antarctic seabirds:a species-specific attraction to krill odors

@article{Nevitt1999OlfactoryFI,
  title={Olfactory foraging in Antarctic seabirds:a species-specific attraction to krill odors},
  author={Gabrielle A Nevitt},
  journal={Marine Ecology Progress Series},
  year={1999},
  volume={177},
  pages={235-241}
}
  • G. Nevitt
  • Published 11 February 1999
  • Environmental Science
  • Marine Ecology Progress Series
Antarctic procellariiform seabirds are known for their well-developed sense of smell, yet few behavioral experiments have addressed how these birds use olfactory cues to forage at sea. I describe results from controlled, shipboard experiments performed in Antarctic waters near Elephant Island. Birds were presented with plain or krill-scented (Euphausia superba) vegetable oil slicks, and their behavioral responses were compared. Krill-scented vegetable oil slicks were highly attractive to some… 

Testing olfactory foraging strategies in an Antarctic seabird assemblage

The hypothesis that Antarctic procellariiforms use species-specific foraging strategies that are inter-dependent and more complex than simply tracking prey by scent is supported.

Olfactory foraging by Antarctic procellariiform seabirds: life at high Reynolds numbers.

  • G. Nevitt
  • Environmental Science, Biology
    The Biological bulletin
  • 2000
It is suggested that procellariiforms foraging over vast distances may be able to recognize features reflected in the olfactory landscape over the ocean that aid seabirds in navigation or in locating profitable foraging grounds.

Mechanisms of Olfactory Foraging by Antarctic Procelliiform Seabirds

It is now well established that many species routinely forage over distances ranging from hundreds to thousands of kilometers, and understanding how these birds are able to accomplish this task has been a primary focus of investigation in my laboratory for the last five years.

Foraging by Seabirds on an Olfactory Landscape The seemingly featureless ocean surface may present olfactory cues that help the wide-ranging petrels and albatrosses pinpoint food sources

In February 1990, Pierre Jouventin and Henri Weimerskirch reported the first suc cessful tracking of a seabird with satel lite telemetry, finding albatrosses and other seabirds to range widely in its foraging habits.

Scent of a nest: discrimination of own-nest odours in Antarctic prions, Pachyptila desolata

It is shown that the Antarctic prion, Pachyptila desolata, is able to distinguish between its own nest and that of a conspecific, relying on olfactory cues only, and the mechanism used in the short-range homing process of this species as an o aroma beaconing is suggested.

Behavioral attraction of Leach's storm-petrels (Oceanodroma leucorhoa) to dimethyl sulfide

The results suggest that Leach's storm-petrels can smell DMS and potentially use it as a foraging cue, consistent with the hypothesis that the detection of biogenic sulfur compounds in combination with other cues assists birds in locating foraging hotspots.

African penguins (Spheniscus demersus) can detect dimethyl sulphide, a prey-related odour

It is convincingly demonstrated that African penguins have a functioning sense of smell and are attracted to DMS, suggesting that the detection of changes in the odour landscape (DMS) may assist penguins in identifying productive areas of the ocean for foraging.

The potential role of ammonia as a signal molecule for procellariiform seabirds

The results suggest that these birds can detect volatilized ammonia within a concentration range that they may naturally encounter, and point to ammonia as a potential signal molecule in the sub-Antarctic.

Exploiting sensory ecology to reduce seabird by-catch

Shark-liver oil was the most effective deterrent of the four fish oils tested in the Flesh-footed Shearwater—Black Petrel assemblage, but it did not deter albatrosses, giant-petrels or Cape Petrels from attending vessels, thus, the deterrent was effective only on burrow-nesting seabird species.

Olfactory foraging in temperate waters: sensitivity to dimethylsulphide of shearwaters in the Atlantic Ocean and Mediterranean Sea

Investigation of the response to DMS in parallel in two different environments in temperate waters, the Atlantic Ocean and the Mediterranean Sea, employing Cory's and Scopoli's shearwaters as models shows that the use of DMS as a foraging cue may be a strategy adopted by procellariiforms across oceans but that regional differences may exist.
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