scholarly journals Modelled mid‐trophic pelagic prey fields improve understanding of marine predator foraging behaviour

Ecography ◽  
2020 ◽  
Vol 43 (7) ◽  
pp. 1014-1026
Author(s):  
D. B. Green ◽  
S. Bestley ◽  
R. Trebilco ◽  
S. P. Corney ◽  
P. Lehodey ◽  
...  
Keyword(s):  
Foraging Behaviour ◽  
Marine Predator ◽  
Pelagic Prey ◽  
Predator Foraging

scholarly journals Large-scale climatic anomalies affect marine predator foraging behaviour and demography

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Charles A. Bost ◽  
Cedric Cotté ◽  
Pascal Terray ◽  
Christophe Barbraud ◽  
Cécile Bon ◽  
...  
Keyword(s):  
Large Scale ◽  
Foraging Behaviour ◽  
Marine Predator ◽  
Predator Foraging

scholarly journals Individuality of foraging behaviour in a short-ranging benthic marine predator: incidence and implications

2019 ◽  
Vol 609 ◽  
pp. 209-219 ◽  
Author(s):  
EA Morgan ◽  
C Hassall ◽  
CPF Redfern ◽  
RM Bevan ◽  
KC Hamer
Keyword(s):  
Foraging Behaviour ◽  
Marine Predator

Individual specialization in diet by a generalist marine predator reflects specialization in foraging behaviour

2008 ◽  
Vol 77 (6) ◽  
pp. 1082-1091 ◽  
Author(s):  
Kerry J. Woo ◽  
Kyle Hamish Elliott ◽  
Melissa Davidson ◽  
Anthony J. Gaston ◽  
Gail K. Davoren
Keyword(s):  
Foraging Behaviour ◽  
Individual Specialization ◽  
Marine Predator

Individual repeatability of foraging behaviour in a marine predator, the great cormorant, Phalacrocorax carbo

2015 ◽  
Vol 103 ◽  
pp. 83-90 ◽  
Author(s):  
Simon Potier ◽  
Alexandre Carpentier ◽  
David Grémillet ◽  
Boris Leroy ◽  
Amélie Lescroël
Keyword(s):  
Foraging Behaviour ◽  
Great Cormorant ◽  
Phalacrocorax Carbo ◽  
Marine Predator ◽  
Individual Repeatability

scholarly journals Understanding the ontogeny of foraging behaviour: insights from combining marine predator bio-logging with satellite-derived oceanography in hidden Markov models

2018 ◽  
Vol 15 (143) ◽  
pp. 20180084 ◽  
Author(s):  
W. James Grecian ◽  
Jude V. Lane ◽  
Théo Michelot ◽  
Helen M. Wade ◽  
Keith C. Hamer
Keyword(s):  
Foraging Behaviour ◽  
Markov Models ◽  
Transition Probabilities ◽  
Hidden Markov ◽  
Extended Period ◽  
Foraging Strategies ◽  
Habitat Features ◽  
Marine Predator ◽  
Age Related ◽  
Frontal Activity

The development of foraging strategies that enable juveniles to efficiently identify and exploit predictable habitat features is critical for survival and long-term fitness. In the marine environment, meso- and sub-mesoscale features such as oceanographic fronts offer a visible cue to enhanced foraging conditions, but how individuals learn to identify these features is a mystery. In this study, we investigate age-related differences in the fine-scale foraging behaviour of adult (aged ≥ 5 years) and immature (aged 2–4 years) northern gannets Morus bassanus . Using high-resolution GPS-loggers, we reveal that adults have a much narrower foraging distribution than immature birds and much higher individual foraging site fidelity. By conditioning the transition probabilities of a hidden Markov model on satellite-derived measures of frontal activity, we then demonstrate that adults show a stronger response to frontal activity than immature birds, and are more likely to commence foraging behaviour as frontal intensity increases. Together, these results indicate that adult gannets are more proficient foragers than immatures, supporting the hypothesis that foraging specializations are learned during individual exploratory behaviour in early life. Such memory-based individual foraging strategies may also explain the extended period of immaturity observed in gannets and many other long-lived species.

scholarly journals Optimal foraging for specific nutrients in predatory beetles

2012 ◽  
Vol 279 (1736) ◽  
pp. 2212-2218 ◽  
Author(s):  
Kim Jensen ◽  
David Mayntz ◽  
Søren Toft ◽  
Fiona J. Clissold ◽  
John Hunt ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Lipid Composition ◽  
Optimal Foraging ◽  
Egg Production ◽  
Foraging Behaviour ◽  
Ground Beetles ◽  
Ecological Communities ◽  
Selective Foraging ◽  
Anchomenus Dorsalis ◽  
Predator Foraging

Evolutionary theory predicts that animals should forage to maximize their fitness, which in predators is traditionally assumed equivalent to maximizing energy intake rather than balancing the intake of specific nutrients. We restricted female predatory ground beetles ( Anchomenus dorsalis ) to one of a range of diets varying in lipid and protein content, and showed that total egg production peaked at a target intake of both nutrients. Other beetles given a choice to feed from two diets differing only in protein and lipid composition selectively ingested nutrient combinations at this target intake. When restricted to nutritionally imbalanced diets, beetles balanced the over- and under-ingestion of lipid and protein around a nutrient composition that maximized egg production under those constrained circumstances. Selective foraging for specific nutrients in this predator thus maximizes its reproductive performance. Our findings have implications for predator foraging behaviour and in the structuring of ecological communities.

Variation in predator foraging behaviour changes predator-prey spatio-temporal dynamics

2011 ◽  
Vol 25 (6) ◽  
pp. 1309-1317 ◽  
Author(s):  
Punya Nachappa ◽  
David C. Margolies ◽  
James R. Nechols ◽  
James F. Campbell
Keyword(s):  
Foraging Behaviour ◽  
Temporal Dynamics ◽  
Predator Prey ◽  
Spatio Temporal ◽  
Predator Foraging ◽  
Behaviour Changes
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