Daily activity patterns in the giant root rat (Tachyoryctes macrocephalus), a fossorial rodent from the Afro-alpine zone of the Bale Mountains, Ethiopia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F17%3A00506409" target="_blank" >RIV/60077344:_____/17:00506409 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/17:43895375

Výsledek na webu

<a href="https://zslpublications.onlinelibrary.wiley.com/doi/10.1111/jzo.12441" target="_blank" >https://zslpublications.onlinelibrary.wiley.com/doi/10.1111/jzo.12441</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jzo.12441" target="_blank" >10.1111/jzo.12441</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Daily activity patterns in the giant root rat (Tachyoryctes macrocephalus), a fossorial rodent from the Afro-alpine zone of the Bale Mountains, Ethiopia

Popis výsledku v původním jazyce

Rodents adjust their activity to environmental conditions. The adjustment can be especially pronounced in climatically challenging environments. We studied activity patterns in the free-living giant root rat (Tachyoryctes macrocephalus), a large fossorial rodent endemic to the Afro-alpine ecosystem of the Bale Mountains, Ethiopia, by means of radio telemetry. We radio-tracked 17 adults during two periods of a dry season differing in temperature and food supply. In both periods, root rats spent a large part of the day (around 79%) in their underground nests. The proportion of time the animals were active aboveground decreased from 6.9 to 3.8% between the early and late dry season, which contradicts our prediction that aboveground activity would increase under lower food supply. We propose that there are thermoregulation advantages of prolonged aboveground activity during warm hours in the colder early dry season. In both periods, the root rats displayed diurnal activity with a unimodal pattern positively related to the temperature at the soil surface. Unlike in some other burrowing rodents, there was no tendency to decrease activity in the warmest part of the day even in the relatively warm late dry season.

Název v anglickém jazyce

Daily activity patterns in the giant root rat (Tachyoryctes macrocephalus), a fossorial rodent from the Afro-alpine zone of the Bale Mountains, Ethiopia

Popis výsledku anglicky

Rodents adjust their activity to environmental conditions. The adjustment can be especially pronounced in climatically challenging environments. We studied activity patterns in the free-living giant root rat (Tachyoryctes macrocephalus), a large fossorial rodent endemic to the Afro-alpine ecosystem of the Bale Mountains, Ethiopia, by means of radio telemetry. We radio-tracked 17 adults during two periods of a dry season differing in temperature and food supply. In both periods, root rats spent a large part of the day (around 79%) in their underground nests. The proportion of time the animals were active aboveground decreased from 6.9 to 3.8% between the early and late dry season, which contradicts our prediction that aboveground activity would increase under lower food supply. We propose that there are thermoregulation advantages of prolonged aboveground activity during warm hours in the colder early dry season. In both periods, the root rats displayed diurnal activity with a unimodal pattern positively related to the temperature at the soil surface. Unlike in some other burrowing rodents, there was no tendency to decrease activity in the warmest part of the day even in the relatively warm late dry season.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Projekt

<a href="/cs/project/GAP506%2F11%2F1512" target="_blank" >GAP506/11/1512: Do podzemí: srovnávací studie hlodavců s různou úrovní adaptací k podzemnímu způsobu života.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Zoology

ISSN

0952-8369

e-ISSN

1469-7998

Svazek periodika

302

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

157-163

Kód UT WoS článku

000405225900002

EID výsledku v databázi Scopus

2-s2.0-85011675599