It has long been known that rodents emit signals in the ultrasonic range, but their role social communication and mating is still under active exploration. While inbred strains of house mice have emerged as a favourite model to study vocalisation (USV) patterns, studies wild animals natural situations are rare. We focus here on two derived mouse populations. recorded them dyadic encounters for extended periods time assess possible roles USVs divergence between allopatric analysed song...

Shrews are very vocal animals. We tested behaviourally whether the high-pitched laryngeal ‘twittering’ calls of as-yet unclear function serve for communication or echo-based orientation. used a representative species from each two largest phylogenetic groups shrews. In both species, experimental manipulation substrate density, but not likelihood conspecific presence, affected shrews' call rate when exploring an unknown environment. This adaptation to degree habitat clutter parallels bat...

ABSTRACT The open field test (OFT) is frequently used in research to assess anxiety‐like behavior and locomotor activity. Its simple design can lead the misconception that it a standardized procedure comparable between laboratories. However, some modifications setup cause changes behavior. Different species might also react differently introduced. There thus need for better understanding of impact their value question. Here, we tested two closely related mouse species, Mus musculus spretus ,...

House mice (Mus musculus) live in social groups where they frequently interact with conspecifics, thus communication (e.g. chemical and/or auditory) is essential. It commonly known that male and female produce complex vocalizations the ultrasonic range (USV) remind of high-pitched birdsong (so called mouse song) which mainly used interactions. Earlier studies suggest use their USVs for mate attraction choice, but could also be as signal during hierarchy establishment familiarization, or...

Wild animals are brought to captivity for different reasons, example be kept in zoos and rehabilitation centres, but also basic research. Such usually undergo a process of adjustment captive conditions. While this occurs on the behavioural physiological level, those studied separately. The aim study was assess both responses wild wood mice, Apodemus sylvaticus, while adjusting laboratory Over course four weeks, we measured wild-caught mice faecal corticosterone metabolites body mass as...

In many animal species, interactions between individuals of different sex often occur in the context courtship and mating. During these interactions, a specific mating partner can be chosen. By discriminating potential mates according to characteristics, increase their evolutionary fitness terms reproduction offspring survival. this study, we monitored preference behaviour female male wild house mice (Mus musculus domesticus) from populations Germany (G) France (F) controlled cage setup for...

Abstract The global trend of urbanization is creating novel challenges for many animal species. Studies investigating behavioral differences between rural and urban populations often report a general increase in risk-taking behaviors populations. According to the most common energy management model (the performance model), that access resources, such as aggression boldness, consume net energy, like locomotion stress responses, are both positively correlated resting metabolic rate (RMR)....

The transcription factor FoxP2 is involved in setting up the neuronal circuitry for vocal learning mammals and birds thought to have played a special role evolution of human speech language. It has been shown that an allele with humanized version murine Foxp2 gene changes ultrasonic vocalization mouse pups compared wild-type inbred strain. Here we tested if this would also affect adult female male mice. In previous study, which only was considered mice were recorded under restricted spatial...

Abstract Light pollution is one of the forms by which human‐induced alterations are changing natural environments. Artificial light at night (ALAN) has been increasing over past decades and it already known that ALAN can have a major influence on ecology, behavior, physiology different taxa. Nocturnal small mammals particularly vulnerable, as increase their predation risk while foraging. The aim this study was to investigate foraging strategies under conditions in nocturnal insectivore,...

<title>Abstract</title> In social species, the array of behavioral traits displayed by different elements group can play a key role in dynamics and fitness colony. This could help explain organization, dispersion, species’ sociality level. The Lusitanian pine vole, with its complex tunnel system cooperative breeding strategy, is perfect candidate to study personality species. We formed laboratory-colonies wild-caught individuals their laboratory-reared offspring, performed repeated tests...

Ambient temperature has a substantial influence on the thermoregulation costs of small mammals due to their high surface-to-volume ratio. Shrews are among smallest and have adopted different behavioral physiological strategies deal with cold temperatures. In this study, we assessed use an external heat source in thermoregulatory strategy two Crocidurinae species, Crocidura russula C. suaveolens, one Soricinae Sorex araneus. inhabits western Europe is better adapted Mediterranean climate;...