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

  title={Olfactory foraging in Antarctic seabirds:a species-specific attraction to krill odors},
  author={Gabrielle A Nevitt},
  journal={Marine Ecology Progress Series},
  • 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.



Olfactory Behavior of Foraging Procellariiforms

Evidence is obtained that olfactory behavior may differ before and after locating odor sources, as well as vary according to oceanic zones, and the hypothesis that certain species rely mainly on visual cues, recognizing and following species that are tracking foodrelated odors is discussed.

Dimethyl sulphide as a foraging cue for Antarctic Procellariiform seabirds

Experimental evidence is presented that Procellariiform seabirds can use a naturally occurring scented compound, dimethyl sulphide, as an orientation cue, and that some species (for example, storm petrels) are highly attracted to it.

Food, feeding ecology and ecological segregation of seabirds at South Georgia

By examining the timing of their breeding seasons and their diet and feeding ecology, the nature of their ecological isolating mechanisms, and in particular the way in which they partition the resources of the marine environment are reviewed.

Anatomical Adaptations for Olfaction in the Snow Petrel

Using the snow petrel as a model, two structures in the entry area of the tubinarial fossa are pointed out which I believe are directly concerned with olfaction, yet the function in this respect has been obscured by having other functions attributed to them in the literature.

Behavior of Antarctic Krill, Euphausia superba: Chemoreception, Feeding, Schooling, and Molting

Krill do not feed by passive, continuous filtration but use area-intensive searching and various rapid feeding behaviors to exploit local high food concentrations. Chemicals alone at low

Counting Seabirds at Sea from Ships: A Review of Methods Employed and a Suggestion for a Standardized Approach

--We review the methods used to study seabirds at sea from ships, discuss the problems posed in making reliable observations in relation to the design of research programs, and describe a method

Particulate Dimethylsulfoniopropionate Removal and Dimethylsulfide Production by Zooplankton in the Southern Ocean

The influence of Antarctic krill, Euphausia superba, on particulate dimethlysulfoniopropionate (DMSP(p)) and dimethylsulfide (DMS) concentrations in surface waters of the Southern Ocean was

Dimethyl sulfide concentrations in the surface waters of the Australasian Antarctic and Subantarctic oceans during an austral summer

Dimethyl sulfide (DMS) was measured in surface seawater samples collected between Tasmania and Antarctica in the Australasian sector of the southern ocean during the 1988–1989 austral summer. The

Oceanic Dimethylsulfide: Production During Zooplankton Grazing on Phytoplankton

The rate of DMS release by phytoplankton is greatly increased when the phy Topolankton are subjected to grazing by zooplankon, and DMS production associated with such grazing may be the major mechanism of D MS production in many marine settings.

The terminal nerve (nervus terminalis): structure, function, and evolution.

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