Foraging strategies
Divergent foraging strategies during incubation of an unusually wide ranging seabird, the Murphy’s petrel
... Divergent foraging strategies may emerge within a population due to a combination of physiological and environmental factors; yet to persist, neither strategy should offer a consistent selective advantage ...
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THE INFLUENCE OF ONTOGENY ON RESOURCE UTILIZATION AND CONTAMINANT DYNAMICS IN THREE FISHES WITH DIFFERENT FORAGING STRATEGIES
... concentration under ambient environmental conditions (Liu, Haffner & Drouillard, 2010). Species-specific in concentrations of PCBs are often the result of dissimilar ecology (e.g. trophic position, feeding ecology, ...
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Foraging strategies in grey seals (Halichoerus grypus) : foraging effort and prey selection
... experimental set-up at the Sea Mammal Research Unit (St Andrews, UK). For breath- hold divers, such as seals, the cost of swimming is a key variable in the management of oxygen stores. Thus it is likely that they ...
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Marine predator foraging strategies in response to broad and fine scale resource variability
... leonina) foraging activity (Bailleul et ...the foraging strategies of top predators, due to the paucity of data on lower and mid-trophic levels in the ...
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Flexibility of foraging strategies of the great skua Stercorarius skua breeding in the largest colony in the Barents Sea region
... flexible foraging strategy to satisfy different energy and time demands of incubation and chick- rearing and both their own energetic requirements and those of their ...16]. Foraging strategies may ...
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Vision on the high seas: spatial resolution and optical sensitivity in two procellariiform seabirds with different foraging strategies
... sensory foraging strategies of the two procellariiform species, we predicted that the burrow-nesting, highly olfactory Leach ’ s storm petrel should have lower spatial resolution compared with the ...
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Foraging strategies, range use and territoriality of grey-cheeked mangabeys in Kibale Forest, western Uganda
... in foraging strategies (see ...time-minimising strategies (Schoener ...their foraging effort or adjust group size so that they do not suffer a reduction in dietary ...Stable foraging ...
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Plasticity of foraging strategies in the blue tit, Cyanistes caeruleus and the domestic chick, Gallus gallus domesticus
... by foraging birds. Optimal foraging theory dictates that when there are a number of food types available, foragers (in this case foraging chicks) should feed exclusively on the most profitable ...of ...
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Individual seabirds show consistent foraging strategies in response to predictable fisheries discards
... also determined (5) maximum dive depth (m) and (6) dive profile shape, indicative of different foraging strategies (V shaped: bottom time < 3 seconds, U shaped: bottom time > 3 seconds; (Garthe et al. ...
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Individual variation in seasonal movements and foraging strategies of a land-locked, ice-breeding pinniped
... Interpreting foraging area size in the current con- text is constrained by several ...of foraging patches, rather than individual prey patches (Kotliar & Wiens 1990, Benoit-Bird et ...and ...
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Using diel movement behavior to infer foraging strategies related to ecological and social factors in elephants
... changes in DD and smaller changes in MP as forage availability increased. Under OFT, this suggests higher ranking individuals are able to more dramatically switch their foraging strategies from energy ...
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Adjusting foraging strategies : a comparison of rural and urban common mynas (Acridotheres tristis)
... proportionately longer before learning them. When quantified from first presentation to criterion achievement, urban mynas took more 20-trial blocks to learn the initial discrimination, as well as the reversed ...
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Activity seascapes highlight central place foraging strategies in marine predators that never stop swimming
... some foraging may occur in the central place of grey reef sharks at ...If foraging has some significance to CPF behavior in grey reef sharks, then we would expect the location of the central place to be in ...
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A few long versus many short foraging trips: different foraging strategies of lesser kestrel sexes during breeding
... in foraging habitat uses by lesser kestrels, we first filtered the positions of the trip corresponding to a foraging ...different foraging events from an indi- vidual kestrel within the same GPS ...
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The behavioural, digestive and metabolic characteristics of fishes with different foraging strategies
... different foraging modes: a sit-and-wait carnivorous southern catfish (Silurus meridionalis), an active grazing herbivorous grass carp (Ctenopharyngodon idellus), a sluggish omnivorous darkbarbel catfish ...
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Testing olfactory foraging strategies in an Antarctic seabird assemblage
... vegetable oil slicks on the ocean surface at seven different locations along the MEB transect (Fig.·1B). Because environmental conditions varied and surface slicks also presented visual cues to seabirds, pyrazine-scented ...
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Foraging strategies, diet and competition in olive baboons
... Feeding behaviour of yellow baboons Papio cynocephalus in relation to age, gender, and dominance rank.. Experimental analysis of the social value of flocking by starlings Sturnus vulgari[r] ...
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Foraging strategies of Adélie penguins at Béchervaise Island
... Chapter 5 describes a study of Adelie penguin diving behaviour over two seasons in relation to stage of breeding, foraging trip duration and diet, and provides further insights into the [r] ...
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Influence of oceanographic structures on foraging strategies: Macaroni penguins at Crozet Islands
... their foraging trips (18 ± 2 days), all the instrumented penguins were re-captured upon returning to their colony having increased their body mass (subsequently, all pairs successfully fledged their ...
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Getting older, getting smarter: ontogeny of foraging behaviour in the tropical social wasp Ropalidia marginata
... their foraging life with a few exploratory walks/flights, through which they establish spatial coordination with their nest and the surrounding landscape, and start foraging for food on the same ...their ...
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