Results 191 to 200 of about 17,332 (258)

Unique Population or Unique Species? Genetic Insights Into the Pygmy Freshwater Crocodiles of Northern Australia

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
There is debate over whether isolated populations of “pygmy” Australian freshwater crocodiles are a unique species. This is a conservation concern as these populations face unique challenges. We found some population differences which support these populations as being ecologically unique and valuable for targeted conservation.
Katherine Brittain   +8 more
wiley   +1 more source

Non‐Native Rodents Dominate Understory Frugivory in the Eastern Caribbean Islands

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
We investigated how non‐native mammals have disrupted frugivory by using artificial fruits and camera traps to measure native and non‐native frugivory interactions on 13 islands in the eastern Caribbean. We found that non‐native Rattus sp. were responsible for nearly 80% of all frugivorous activity and that increased non‐native mammal activity was ...
Seokmin Kim   +13 more
wiley   +1 more source

Disentangling Temporal and Environmental Effects on Hematological Values in Prairie Rattlesnakes (Crotalus viridis)

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 7, Page 727-734, August 2026.
ABSTRACT Hematologic assessment is a common clinical tool used to characterize both individual and population health. In ectothermic organisms, the hematologic response is influenced by external factors such as temperature and season, especially in temperate species. Yet, specific environmental effects have received little direct attention.
Ethan J. Kessler   +4 more
wiley   +1 more source

The Backbone of Regionalisation: Refining Axial Regionalisation Through 3D Morphometric Sampling Strategies on Elapid Snakes

open access: yesJournal of Morphology, Volume 287, Issue 8, August 2026.
Using 3D geometric morphometrics on every precaudal vertebra from 12 elapid snakes, this study used segmented linear regression to test regionalisation. The results show a five‐region model is best supported, including short cervical and lumbar regions and a strong heart‐aligned boundary at approximately 20% of the pre‐caudal column.
Ammresh   +4 more
wiley   +1 more source

Sleep-dependent infraslow rhythms are evolutionarily conserved across reptiles and mammals. [PDF]

open access: yesNat Neurosci
Bergel A   +16 more
europepmc   +1 more source

Evidence for dispersal personality in the guppy across ecological conditions, with a minor effect of relative brain size

open access: yesOikos, Volume 2026, Issue 8, August 2026.
Individuals that disperse typically exhibit specific phenotypical traits that facilitate dispersal and settlement success, known as ‘dispersal syndromes'. Consequentially, characterizing dispersers is crucial to understand other processes such as metapopulation dynamics and biological invasions.
Gilles De Meester   +6 more
wiley   +1 more source

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