Empirical evidence that large marine predator foraging behavior is consistent with area‐restricted search theory

Ecology ◽  
2019 ◽  
Vol 100 (8) ◽  
Author(s):  
H. Bailey ◽  
V. Lyubchich ◽  
J. Wingfield ◽  
A. Fandel ◽  
A. Garrod ◽  
...  
Keyword(s):  
Empirical Evidence ◽  
Foraging Behavior ◽  
Search Theory ◽  
Marine Predator ◽  
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 Estimating the reservation wage across city groups in Colombia: A stochastic frontier approach

2021 ◽  
Author(s):  
Luz A. Florez ◽  
Ligia Melo-Becerra ◽  
Carlos Esteban Posada
Keyword(s):  
Empirical Evidence ◽  
Gender Gap ◽  
Stochastic Frontier ◽  
Search Theory ◽  
Reservation Wage ◽  
Positive Relation ◽  
Stochastic Frontier Approach ◽  
Level Of Education ◽  
Reservation Wages ◽  
Wage Increases

We use the stochastic frontier approach to estimate the reservation wage across different city groups in Colombia. We use the information of GEIH from 2008-2019 of 23 urban cities. We find empirical evidence in favour of the search theory predictions that suggest a positive relation of the reservation wage with the level of education and with the net family labour income. We also find a gender gap in the reservation wage and explore this gap controlling by the level of education and presence of children in the household. Contrary to the results found in the literature, we find that the presence of children reduces the reservation wage of women and men. Finally, we found that the reservation wage increases with the level of development and productivity of the cities, however, qualified workers in low-quality cities present higher reservation wages than median quality cities.

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 Hemipteran defensive odors trigger predictable color biases in jumping spider predators

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Michael E. Vickers ◽  
Lisa A. Taylor
Keyword(s):  
Foraging Behavior ◽  
Harmonia Axyridis ◽  
Jumping Spider ◽  
Ladybird Beetles ◽  
Predator Foraging

AbstractMultimodal warning displays often pair one signal modality (odor) with a second modality (color) to avoid predation. Experiments with bird predators suggest these signal components interact synergistically, with aversive odors triggering otherwise hidden aversions to particular prey colors. In a recent study, this phenomenon was found in a jumping spider (Habronattus trimaculatus), with the defensive odor from a coreid bug (Acanthocephala femorata) triggering an aversion to red. Here, we explore how generalizable this phenomenon is by giving H. trimaculatus the choice between red or black prey in the presence or absence of defensive odors secreted from (1) eastern leaf-footed bugs (Leptoglossus phyllopus, Hemiptera), (2) grass stinkbugs (Mormidea pama, Hemiptera), (3) Asian ladybird beetles (Harmonia axyridis, Coleoptera), and (4) eastern lubber grasshoppers (Romalea microptera, Orthoptera). As expected, in the presence of the hemipteran odors, spiders were less likely to attack red prey (compared to no odor). Unexpectedly, the beetle and grasshopper odors did not bias spiders away from red. Our results with the hemipteran odors were unique to red; follow-up experiments indicated that these odors did not affect biases for/against green prey. We discuss our findings in the context of generalized predator foraging behavior and the functions of multimodal warning displays.

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