Results 61 to 70 of about 485 (157)
In many avian species, variation in breeding phenology is known to affect reproductive success. In king penguins, the breeding cycle lasts more than a year, and the start of egg‐laying extends over three months, with early‐breeders laying eggs around December and late‐breeders around February.
Nina Cossin‐Sevrin +12 more
wiley +1 more source
We introduce ENHYDROSS, a new mechanistic model that uses optimal swimming speed and minimum cost of transport to estimate maximum dispersal distances and durations for vertebrates, enabling assessment of long‐distance oceanic dispersal potential. Applied to a range of extant and extinct animals, the model's estimates generally align with observed data;
Alexandros Pantelides +5 more
wiley +1 more source
How to Be a Male at Different Elevations: Ecology of Intra-Sexual Segregation in the Trawling Bat Myotis daubentonii. [PDF]
Intra-sexual segregation is a form of social segregation widespread among vertebrates. In the bat Myotis daubentonii, males are disproportionately abundant at higher elevations, while females are restricted to lower altitude.
Valentina Nardone +8 more
doaj +1 more source
Label: Dryland mammals and heat risk. Description: Using Australia's threatened dryland mammals as a model system, we developed a framework comparing historical, current and future heat envelopes to quantify exposure to novel thermal conditions, identify potential thermal refugia and evaluate the suitability of conservation translocation sites.
Jack Bilby +2 more
wiley +1 more source
TACTICS OF HETEROTHERMY IN EASTERN GRAY SQUIRRELS (SCIURUS CAROLINENSIS) [PDF]
Abstract To investigate seasonal tactics of energy management, core body temperature (Tb) was monitored over 1 year in eastern gray squirrels (Sciurus carolinensis) maintained on a constant diet in an outdoor enclosure. Each fortnight, we recorded hourly temperatures via radio-telemetry on 2 separate days.
Michael E. Pereira +2 more
openaire +1 more source
Seasonal body mass dynamics mediate life‐history trade‐offs in a hibernating mammal
We tested a suite of ecological hypotheses to explain variation in seasonal body mass dynamics of a fat‐storing mammalian hibernator. We further demonstrated that pre‐hibernation mass gain in ground squirrels mediates an annual allocation trade‐off between current and future reproduction as the squirrels forage and rear young under predation risk ...
Austin Z. T. Allison +4 more
wiley +1 more source
The ecology and evolution of mammalian heterothermy in a changing world [PDF]
(Uploaded by Plazi for the Bat Literature Project) No abstract provided.
openaire +3 more sources
Do Energetic Challenges Mimicking Missed Foraging Encourage Torpor Use by a Neotropical Bat?
We experimentally tested whether Merriam's long‐tongued bat (Glossophaga mutica), a Neotropical nectarivorous species, uses heterothermy in response to reduced energy intake. We found that energetically challenged bats maintained subcutaneous temperatures significantly closer to roost temperature during the daytime inactive period.
Zenon J. Czenze +2 more
wiley +1 more source
Background Mammals in the far north are exposed to extreme seasonal changes in environmental conditions, such as temperature and photoperiod, which have notable effects on animal physiology and behaviour.
Alexandra Thiel +5 more
doaj +1 more source
Climate‐linked evolution and genetics in a warming Arctic
Abstract Knowledge of evolutionary patterns and genetic variation across a species' range is important for determining conservation and management strategies. The Arctic is the fastest‐warming ecosystem on Earth and has already reached temperature increases not expected in the rest of the world until the end of the century.
L. Ruth Rivkin +12 more
wiley +1 more source

