scholarly journals Young giant water bug nymphs prefer larger prey: changes in foraging behaviour with nymphal growth inKirkaldyia deyrolli

2015 ◽  
Vol 117 (3) ◽  
pp. 601-606 ◽  
Author(s):  
Shin-Ya Ohba ◽  
Haruki Tatsuta
Keyword(s):  
Foraging Behaviour ◽  
Nymphal Growth

Influence of intrinsic variation on foraging behaviour of adult female Australian fur seals

2015 ◽  
Vol 526 ◽  
pp. 227-239 ◽  
Author(s):  
AJ Hoskins ◽  
DP Costa ◽  
KE Wheatley ◽  
JR Gibbens ◽  
JPY Arnould
Keyword(s):  
Adult Female ◽  
Foraging Behaviour ◽  
Fur Seals

Mechanisms for sex-based segregation in foraging behaviour by a polygynous marine carnivore

2019 ◽  
Vol 624 ◽  
pp. 213-226 ◽  
Author(s):  
M Salton ◽  
R Kirkwood ◽  
D Slip ◽  
R Harcourt
Keyword(s):  
Foraging Behaviour

Morphology and diet of two sympatric colubrid snakes, Chironius flavolineatus and Chironius quadricarinatus (Serpentes: Colubridae)

2008 ◽  
Vol 29 (2) ◽  
pp. 149-160 ◽  
Author(s):  
Otavio Augusto Vuolo Marques ◽  
Ronaldo Fernandes ◽  
Roberta Richard Pinto
Keyword(s):  
Foraging Behaviour ◽  
Sexual Size Dimorphism ◽  
Sympatric Species ◽  
Colour Pattern ◽  
Ontogenetic Variation ◽  
Brazilian Cerrado ◽  
Size Dimorphism ◽  
Snake Species ◽  
Dietary Ecology ◽  
Arboreal Habit

Abstract The morphometry and diet of two sympatric species of Chironius (C. flavolineatus and C. quadricarinatus) from Brazilian Cerrado are described. The two snake species differ in external morphology, as Chironius flavolineatus was the largest species (body, tail and eyes) whereas C. quadricarinatus the heaviest. Each species also showed marked sexual size dimorphism. In terms of dietary ecology, both species feed exclusively on frogs with a heavy preference for hylids and may have tendency to eat small items, as noticed in other colubrine species. These two snake species showed a brownish colour pattern and exhibited no ontogenetic variation, suggesting that juveniles and adults use similar substrates. Chironius flavolineatus and C. quadricarinatus present a semi-arboreal habit, with active foraging behaviour, feeding in the ground most of time. Chironius flavolineatus uses higher vegetation for resting and, based on morphological results, seems to be more arboreal than C. quadricarinatus.

Phylogeny and foraging behaviour shape modular morphological variation in bat humeri

2020 ◽  
Author(s):  
Camilo López‐Aguirre ◽  
Suzanne J. Hand ◽  
Daisuke Koyabu ◽  
Vuong Tan Tu ◽  
Laura A. B. Wilson
Keyword(s):  
Morphological Variation ◽  
Foraging Behaviour

Sexual segregation in the foraging behaviour of a slightly dimorphic seabird: Influence of the environment and fishery activity

2021 ◽  
Author(s):  
José Manuel Reyes‐González ◽  
Fernanda De Felipe ◽  
Virginia Morera‐Pujol ◽  
Andrea Soriano‐Redondo ◽  
Leia Navarro‐Herrero ◽  
...  
Keyword(s):  
Foraging Behaviour ◽  
Sexual Segregation

Design of experimental food patches to measure foraging intensity for octopus: a case study with the giant Pacific octopus Enteroctopus dofleini

2020 ◽  
Author(s):  
Stephanie Chancellor ◽  
David Scheel ◽  
Joel S Brown
Keyword(s):  
Predation Risk ◽  
Foraging Behaviour ◽  
Habitat Preferences ◽  
High Tide ◽  
Intertidal Habitat ◽  
Camera System ◽  
Subtidal Habitat ◽  
Enteroctopus Dofleini ◽  
Nontarget Species

ABSTRACT In a study of the foraging behaviour of the giant Pacific octopus Enteroctopus dofleini, we designed two types of experimental food patches to measure habitat preferences and perceptions of predation risk. The first patch successfully measured giving-up densities (GUDs), confirmed by octopus prey presence and higher foraging at sites with historically greater octopus presence. However, nontarget foragers also foraged on these experimental food patches. Our second floating patch design successfully excluded nontarget species from subtidal patches, and from intertidal patches at high tide, but allowed for foraging by E. dofleini. The second design successfully measured GUDs and suggested that octopus preferred foraging in a subtidal habitat compared to an intertidal habitat. We ascribe the higher GUD in the intertidal habitat to its higher predation risk relative to the subtidal habitat. The second patch design seems well suited for E. dofleini and, in conjunction with a camera system, could be used to provide behavioural indicators of the octopus's abundance, perceptions of habitat quality and predation risk.

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