Results 21 to 30 of about 240,144 (264)

A digital acoustic recording tag for measuring the response of wild marine mammals to sound [PDF]

open access: yes, 2003
Definitive studies on the response of marine mammals to anthropogenic sound are hampered by the short surface time and deep-diving lifestyle of many species.
Johnson, Mark   +6 more
core   +2 more sources

Initial results on the variation of whistle characteristics of bottlenose dolphins from two neighbouring regions of the Mediterranean Sea: Northern Ionian and Southern Adriatic Sea

open access: yesFrontiers in Marine Science, 2023
Bottlenose dolphins have a complex vocal repertoire that varies depending on behavioral context, social structure, group composition, and anthropogenic pressures.
Aylin Akkaya   +14 more
doaj   +1 more source

Health Status and Stress in Different Categories of Racing Pigeons

open access: yesAnimals, 2021
The influence of different stress parameters in racing pigeon flocks, such as the presence of diseases and environmental conditions at the time of the races, were described.
Marjan Kastelic   +12 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 ...
Caro, Tim, Mallarino, Ricardo
openaire   +4 more sources

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

Genotypes of Cryptosporidium Species Infecting Fur-Bearing Mammals Differ from Those of Species Infecting Humans [PDF]

open access: yes, 2004
Of 471 specimens examined from foxes, raccoons, muskrats, otters, and beavers living in wetlands adjacent to the Chesapeake Bay, 36 were positive for five types of Cryptosporidium, including the C.
Schaefer, F.W.   +11 more
core   +1 more source

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

Marine-mammals NetCDF formats and conventions

open access: yes, 2014
The instrumented sea-mammals program is the global network of open-ocean in-situ observations, being implemented by an international partnership of researchers.
Marine-mammals data management team
core   +1 more source

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