Choosing among alternative refuges: Distances and directions
Ethology,Volume 124, Issue 4, Page 209-217, April 2018. (Source: Ethology)
Source: Ethology - January 24, 2018 Category: Zoology Source Type: research
Random size ‐assortative mating despite size‐dependent fecundity in a Neotropical amphibian with explosive reproduction
Ethology,Volume 124, Issue 4, Page 218-226, April 2018. (Source: Ethology)
Source: Ethology - January 24, 2018 Category: Zoology Source Type: research
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Ethology,Volume 124, Issue 4, Page 209-217, April 2018. (Source: Ethology)
Source: Ethology - January 24, 2018 Category: Zoology Source Type: research
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Ethology,Volume 124, Issue 4, Page 218-226, April 2018. (Source: Ethology)
Source: Ethology - January 24, 2018 Category: Zoology Source Type: research
Choosing among alternative refuges: Distances and directions
Abstract
Many prey flee to refuges to escape from approaching predators, but little is known about how they select one among many refuges available. The problem of choice among alternative refuges has not been modeled previously, but a recent model that predicts flight initiation distance (FID = predator–prey distance when escape starts) for a prey fleeing to a refuge provides a basis for predicting which refuge should be chosen. Because fleeing is costly, prey should choose to flee to the refuge permitting the shortest FID. The model predicts that the more distant of two refuges can be favored if it is not too far and...
Source: Ethology - January 24, 2018 Category: Zoology Authors: William E. Cooper, Diogo S. M. Samia Tags: RESEARCH PAPER Source Type: research
Hunt or hide: How insularity and urbanization affect foraging decisions in lizards
In this study, we investigated the effect of both insularity and urbanization on risk‐taking and neophobia during foraging in the Dalmatian wall lizard (Podarcis melisellensis). Small islets tend to have both a lower number of predators and less resources. Therefore, islet populations were expected to show more risk‐taking behaviour and less neophobia in a foraging context. Previous studies on behaviour of urban lizards have yielded inconsistent results, but due to a lack of both predators and arthropod prey in urban habitats, we expected urban lizards to also take more risks and behave less neophobic. We sampled sever...
Source: Ethology - January 23, 2018 Category: Zoology Authors: Gilles De Meester, Yorick Lambreghts, Bjorn Briesen, Tom Smeuninx, Zoran Tadi ć, Raoul Van Damme Tags: RESEARCH PAPER Source Type: research
Hunt or hide: How insularity and urbanization affect foraging decisions in lizards
Ethology,Volume 124, Issue 4, Page 227-235, April 2018. (Source: Ethology)
Source: Ethology - January 23, 2018 Category: Zoology Source Type: research
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Ethology,Volume 124, Issue 4, Page 227-235, April 2018. (Source: Ethology)
Source: Ethology - January 23, 2018 Category: Zoology Source Type: research
Behavioural responses of male ruffed grouse (Bonasa umbellus, L.) to playbacks of drumming displays
Abstract
Birds use a variety of sounds in their courtship displays, but the majority of behavioural studies have focused on vocalizations. In contrast, little is known about how non‐vocal sounds, or sonations, are used, even though many avian species produce them. The ruffed grouse (Bonasa umbellus) is a useful species to examine non‐vocal sounds because they lack vocal components in their courtship and rely on a non‐vocal sound to attract mates and defend their territory. Their courtship display, known as “drumming,” is created by the wings, and the number of pulses and speed (pulse rate) varies significantly am...
Source: Ethology - January 22, 2018 Category: Zoology Authors: Nicholas P. O'Neil, Isabelle Charrier, Andrew N. Iwaniuk Tags: RESEARCH PAPER Source Type: research
Honest error, precaution or alertness advertisement? Reactions to vertebrate pseudopredators in red ‐nosed cuxiús (Chiropotes albinasus), a high‐canopy neotropical primate
Abstract
Predation on primates is considered to have far‐reaching effects on the foraging and social ecology of a species. Primate species display a variety of responses to predator proximity and attack, ranging from active physical defense and mobbing, to flight and concealment. Warning calls are often given, and potentially threatening animals may be tracked, either actively or with head movements. Such behaviors take time that could be used for other activities. Accordingly, there should be strong selection to respond only to those species that represent a genuine threat. However, primates give defense‐based behavio...
Source: Ethology - January 17, 2018 Category: Zoology Authors: Adrian A. Barnett, Tadeu Oliveira, Rafaela Fatima Soares da Silva, Samara Albuquerque Teixeira, Lucy M. Todd, Sarah A. Boyle Tags: RESEARCH PAPER Source Type: research
Nuthatch uses tool in London park
Abstract
Here, we report an observation of a Eurasian nuthatch Sitta europaea foraging with a tool in a public park in Greater London, UK. This record is of significance, as it provides the first photographic evidence (to our knowledge) of nuthatch tool use, reveals an unusually wide phylogenetic and geographic distribution of tool behaviour within the Sittidae, and constitutes a rare example of animal tool use in an urban environment. To improve our understanding of nuthatch tool behaviour, we are building a global database of relevant anecdotal field observations—submissions are most welcome. (Source: Ethology)
Source: Ethology - January 16, 2018 Category: Zoology Authors: Christian Rutz, Simon Deans Tags: BEHAVIOURAL NOTES Source Type: research
Announcing two new manuscript categories in ethology
(Source: Ethology)
Source: Ethology - January 16, 2018 Category: Zoology Authors: Jutta Schneider, Susan Foster Tags: EDITORIAL Source Type: research
Issue Information
(Source: Ethology)
Source: Ethology - January 16, 2018 Category: Zoology Tags: ISSUE INFORMATION Source Type: research
Eurasian nuthatch (Sitta europaea) using a wooden splinter as a foraging tool. Photograph taken in South Norwood Country Park, London (UK) and reproduced by permission of Simon Deans.
(Source: Ethology)
Source: Ethology - January 16, 2018 Category: Zoology Tags: FRONT COVER Source Type: research
Shoaling with infected conspecifics does not improve resistance to trematode infection
Abstract
Group‐living animals can gain protection against parasitic infections through social contacts with previously infected conspecifics (social immunization). Recent research suggests that such protective effects can be induced through visual or chemical cues released by infected individuals, resulting in anticipatory immune upregulation among group members. Here, we study cue‐induced social resistance in rainbow trout Oncorhynchus mykiss exposed to a trematode parasite, the eye‐fluke Diplostomum pseudospathaceum. We established groups of naïve individuals (receivers) that were paired with previously infected i...
Source: Ethology - January 1, 2018 Category: Zoology Authors: Ines Klemme, Anssi Karvonen Tags: RESEARCH PAPER Source Type: research
