Results 81 to 90 of about 24,785 (216)

The influence of season, photoperiod, and pineal melatonin on immune function. [PDF]

open access: yes, 1995
In addition to the well-documented seasonal cycles of mating and birth, there are also significant seasonal cycles of illness and death among many animal populations.
Demas, G   +3 more
core   +1 more source

‘O sibling, where art thou?’ – a review of avian sibling recognition with respect to the mammalian literature [PDF]

open access: yes, 2004
Avian literature on sibling recognition is rare compared to that developed by mammalian researchers. We compare avian and mammalian research on sibling recognition to identify why avian work is rare, how approaches differ and what avian and mammalian ...
Barnard C. J.   +69 more
core   +2 more sources

Question the Mark: A Review and Assessment of Bat Marking Practices

open access: yesMammal Review, Volume 56, Issue 1, March 2026.
We reviewed a decade of research on bats and conducted a broader systematic review to assess the nature of bat marking practices and the effects and efficacy of marks. Effects of marks on bats, mark details and marking procedures are rarely reported and further research on the effects of marks on bats and more thorough reporting are needed.
Susan C. Loeb   +10 more
wiley   +1 more source

Mensural Discrimination of the Skulls of Arkansas Peromyscus [PDF]

open access: yes, 1983
Twelve parameters were measured on skulls of four species of Peromyscus from Arkansas. Univariate statistical tests, multivariate analyses of variance, and principal axis factor analyses were performed on the data set and/or subsets in a search for ...
McDaniel, V. Rick   +2 more
core   +2 more sources

Surviving the Squeeze: Genomic Analysis of a Successful Invasion by European Common Wall Lizards (Podarcis muralis) in North America (Ohio, USA)

open access: yesMolecular Ecology, Volume 35, Issue 5, March 2026.
ABSTRACT Invasive species that undergo a founder event may experience a decline in genetic diversity yet still establish successful populations. A possible example is a population of the common wall lizard (Podarcis muralis) in Cincinnati, Ohio, USA, which was founded following an introduction in the 1950s of a small number of individuals from Europe ...
Emily R. Bode   +5 more
wiley   +1 more source

The accelerating influence of humans on mammalian macroecological patterns over the late Quaternary [PDF]

open access: yes, 2019
The transition of hominins to a largely meat-based diet ~1.8 million years ago led to the exploitation of other mammals for food and resources. As hominins, particularly archaic and modern humans, became increasingly abundant and dispersed across the ...
Elliott Smith, Rosemary E.   +4 more
core   +1 more source

Seasonal Drivers of Density in a Subarctic Population of Northern Red‐Backed Voles

open access: yesEcology and Evolution, Volume 16, Issue 2, February 2026.
In this study, we analyzed 30 years of northern red‐backed vole population data from Denali National Park to examine how environmental factors influenced density over time. We found that this population showed cyclic population fluctuations with a 2–4 year period, with some variation between sampling sites, and that densities were positively associated
Sarah Swanson   +5 more
wiley   +1 more source

Peromyscus sp.

open access: yes, 2019
{"references": ["Wike, M. J. 1998. Mitochondrial-DNA variation among populations of Peromyscus from Yukon, Canada and southeastern Alaska. M. S. Thesis, Department of Biology, Texas A & M University, College Station.", "Lucid, M. K., and J. A. Cook. 2007. Cytochrome-b haplotypes suggest an undescribed Peromyscus species from the Yukon.
Bradley, Robert D.   +5 more
openaire   +1 more source

Flea‘in Around: A Look at the Identification, Preservation, Clearing, and Mounting of Siphonaptera [PDF]

open access: yes, 2018
Fleas are remarkable and highly specialized insects, with no part of their external anatomy being easily mistaken for that of any other insect. Due to their small size, the subtle differences among the distinguishing morphological characteristics of each
Bennett, Steve   +9 more
core  

Distributional extensions of Carollia castanea and Micronycteris minuta from Guatemala, Central America [PDF]

open access: yes, 2017
Field expeditions in 2011 that inventoried the terrestrial vertebrate fauna of two wildlife protected areas in the tropical Caribbean of Guatemala have produced the first confirmed records of two bats for the country: the white-bellied big-eared bat ...
Barahona, R   +6 more
core   +1 more source

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