Results 21 to 30 of about 516,150 (266)

Coloration in Mammals

open access: yesTrends in Ecology & Evolution, 2020
Mammalian colors and color patterns are some of the most diverse and conspicuous traits found in nature and have been widely studied from genetic/developmental and evolutionary perspectives. In this review we first discuss the proximate causes underlying variation in pigment type (i.e., color) and pigment distribution (i.e., color pattern) and ...
Caro, Tim, Mallarino, Ricardo
openaire   +4 more sources

The Mammals of Angola [PDF]

open access: yes, 2019
Scientific investigations on the mammals of Angola started over 150 years ago, but information remains scarce and scattered, with only one recent published account. Here we provide a synthesis of the mammals of Angola based on a thorough survey of primary and grey literature, as well as recent unpublished records.
Pedro Beja   +9 more
openaire   +2 more sources

Long-Term Stability in the Trophic Ecology of a Pelagic Forager Living in a Changing Marine Ecosystem

open access: yesFrontiers in Marine Science, 2020
Natural or human-induced environmental changes can modify the structure of ecological communities and thus alter food web interactions. After the collapse of hake stocks (Merluccius hubbsi) provoked by fisheries over the Patagonian shelf in 1997 profound
Damián G. Vales   +4 more
doaj   +1 more source

Canary Bornavirus (Orthobornavirus serini) Infections Are Associated with Clinical Symptoms in Common Canaries (Serinus canaria dom.)

open access: yesViruses, 2022
While parrot bornaviruses are accepted as the cause of proventricular dilatation disease (PDD) in psittacine birds, the pathogenic role of bornaviruses in common canaries is still unclear.
Monika Rinder   +4 more
doaj   +1 more source

Olfaction in Mammals [PDF]

open access: yesAmerican Zoologist, 1967
This paper centers on selected—and particularly, little recognized— problems in mammalian olfaction: (1) With certain exceptions the spacing of the external nares in most mammals does not favor orientation in an odor gradient by simultaneous comparisons of odor intensities (tropotaxis).
openaire   +2 more sources

Spontaneous Tumors and Non-Neoplastic Proliferative Lesions in Pet Degus (Octodon degus)

open access: yesVeterinary Sciences, 2020
In recent years, degus (Octodon degus), rodents native to South America, have been becoming increasingly popular as pet animals. Data about neoplastic diseases in this species are still sparse and mainly limited to single-case reports.
Tanja Švara   +4 more
doaj   +1 more source

Evaluation of Welfare in Commercial Turkey Flocks of Both Sexes Using the Transect Walk Method

open access: yesAnimals, 2021
The study was conducted between March and September 2019 in six meat-type turkey flocks with similar management standard procedures using the transect walk method. The concept of the method is based on visual observation of the birds while slowly walking
Nina Mlakar Hrženjak   +9 more
doaj   +1 more source

On the Mammals of Gilgit.

open access: yesProceedings of the Zoological Society of London, 1881
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

Differences between the Filling Velocities of the Left and Right Heart Ventricle in Racing Pigeons (Columba livia F. Domestica) and the Influence of Anesthesia with Isoflurane

open access: yesVeterinary Sciences, 2019
The ventricular filling velocities during diastole and the influence of isoflurane anesthesia on these blood flow velocities of the racing pigeon (n = 43) are evaluated by pulsed-wave (PW) Doppler sonography. Sonographic examination demonstrates an early
Marko Legler   +3 more
doaj   +1 more source

Detecting narwhal foraging behaviour from accelerometer and depth data using mixed-effects logistic regression

open access: yesAnimal Biotelemetry, 2023
Background Due to their Arctic habitat and elusive nature, little is known about the narwhal (Monodon monoceros) and its foraging behaviour. Understanding its ability to catch prey is essential for understanding its ecological role, but also to assess ...
Frederik H. Jensen   +3 more
doaj   +1 more source

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