Results 21 to 30 of about 703,473 (291)

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a synthesis of the mammals of Angola based on a thorough survey of primary and grey literature, as well as recent unpublished records.
Ezequiel Fabiano   +11 more
openaire   +3 more sources

Age‐associated variation in the gut microbiota of chinstrap penguins (Pygoscelis antarctica) reveals differences in food metabolism

open access: yesMicrobiologyOpen, 2021
Age is known to affect the gut microbiota in various animals; however, this relationship is poorly understood in seabirds. We investigated the temporal succession of gut microbiota in captive chinstrap penguins of different ages using high‐throughput ...
Jiashen Tian   +6 more
doaj   +1 more source

Monitoring of Organochlorine Pesticide and Polychlorinated Biphenyl Residues in Common Swifts (Apus apus) in the Region of Hannover, Lower Saxony, Germany

open access: yesVeterinary Sciences, 2021
The use of pesticides is associated with the decline of several avian species. In this study, we monitored the organochlorine contaminants in common swifts (Apus apus) in the years 2016 to 2018.
Warakorn Tiyawattanaroj   +3 more
doaj   +1 more source

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 ...
Tim Caro, Tim Caro, Ricardo Mallarino
openaire   +5 more sources

Intrapopulation differences in polar bear movement and step selection patterns

open access: yesMovement Ecology, 2022
Background The spatial ecology of individuals often varies within a population or species. Identifying how individuals in different classes interact with their environment can lead to a better understanding of population responses to human activities and
Ryan R. Wilson   +3 more
doaj   +1 more source

Evidence of strong stabilizing effects on the evolution of boreoeutherian (Mammalia) dental proportions. [PDF]

open access: yes, 2019
The dentition is an extremely important organ in mammals with variation in timing and sequence of eruption, crown morphology, and tooth size enabling a range of behavioral, dietary, and functional adaptations across the class.
Archibald J. D.   +26 more
core   +5 more sources

Hunting by the Stroke: How Foraging Drives Diving Behavior and Locomotion of East-Greenland Narwhals (Monodon monoceros)

open access: yesFrontiers in Marine Science, 2021
Deep diving air-breathing species by necessity must balance submergence time and level of exercise during breath-holding: a low activity level preserves oxygen stores and allows longer duration submergence whereas high activity levels consume oxygen ...
Outi M. Tervo   +6 more
doaj   +1 more source

Helminth fauna of Mt. Ontake. Part 2. Trematoda and Cestoda [PDF]

open access: yes, 1954
I. Trematodes of mammals 1. Brachylaemus tokudai n. sp. 2. Acanthatrium ovatum Yamaguti, 1939 II. Cestodes of frogs 3. Baerietta montana n. sp. 4. Baerietta claviformis n. sp. III. Cestodes of· birds 5. Choanotaenia barbara Meggitt, 1926 IV.
Yamaguti, Satyu
core   +1 more source

Color Flow Doppler Echocardiography in Healthy Racing Pigeons (Columba livia f. domestica) and the Evidence of Physiological Blood Flow Vortex Formations

open access: yesVeterinary Sciences, 2020
In avian medicine, Doppler sonographic techniques are used to visualize and estimate blood flow in the heart. In the literature there is a lack of standardized studies of the use of color Doppler flow on healthy avian species.
Marko Legler   +3 more
doaj   +1 more source

The influence of anaesthesia with isoflurane on the pulmonary and aortic blood flow of Racing Pigeons (Columba livia f. domestica) measured by pulsed wave Doppler echocardiography [PDF]

open access: yesOpen Veterinary Journal, 2019
Doppler echocardiographic examinations are an important technique for evaluating the blood flow also in avian cardiology. The influence of anaesthesia on the blood flow in the heart is in detail unknown for most avian species.
Marko Legler   +3 more
doaj   +1 more source

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