Results 31 to 40 of about 1,017,023 (300)

Avian Immunome DB: an example of a user-friendly interface for extracting genetic information

open access: yesBMC Bioinformatics, 2020
Background Genomic and genetic studies often require a target list of genes before conducting any hypothesis testing or experimental verification. With the ever-growing number of sequenced genomes and a variety of different annotation strategies, comes ...
Ralf C. Mueller   +5 more
doaj   +1 more source

Migration and animal husbandry: Competing or complementary livelihood strategies. Evidence from Kyrgyzstan [PDF]

open access: yes, 2010
Animal husbandry and labour migration are important livelihood strategies for a large proportion of the rural population in developing countries. Up to now, the two strategies have usually been studied by looking at either one or the other; their ...
Schoch, N, Steimann, B, Thieme, S
core   +1 more source

Diverse Inflammatory Response After Cerebral Microbleeds Includes Coordinated Microglial Migration and Proliferation. [PDF]

open access: yes, 2018
BACKGROUND AND PURPOSE:Cerebral microbleeds are linked to cognitive decline, but it remains unclear how they impair neuronal function. Infarction is not typically observed near microbleeds, suggesting more subtle mechanisms, such as inflammation, may ...
Ahn, Sung Ji   +3 more
core   +1 more source

Juvenile salmon habitat use drives variation in growth and highlights vulnerability to river fragmentation

open access: yesEcosphere, 2022
Widespread stream network fragmentation from dams and culverts has altered habitat connectivity in river ecosystems and presents an acute threat to migratory fish.
Suresh A. Sethi   +7 more
doaj   +1 more source

Nathusius’ bats, Pipistrellus nathusii, bypass mating opportunities of their own species, but respond to foraging heterospecifics on migratory transit flights

open access: yesFrontiers in Ecology and Evolution, 2023
In late summer, migratory bats of the temperate zone face the challenge of accomplishing two energy-demanding tasks almost at the same time: migration and mating.
Lara C. Marggraf   +9 more
doaj   +1 more source

(Micro)evolutionary changes and the evolutionary potential of bird migration

open access: yes, 2018
Seasonal migration is the yearly long-distance movement of individuals between their breeding and wintering grounds. Individuals from nearly every animal group exhibit this behavior, but probably the most iconic migration is carried out by birds, from ...
A Helbig   +81 more
core   +1 more source

Animal Migrations: Endangered Phenomena [PDF]

open access: yesAmerican Zoologist, 1991
Synopsis. Current conservation research focuses on diminishing species diversity, minimal viable populations, and on the successive demise of habitats and populations that leads species to extinction. In this paper we utilize the monarch butterfly's remarkable migration and overwintering biology as a paradigm of a new conservation theme: endan?
LINCOLN P. BROWER, STEPHEN B. MALCOLM
openaire   +1 more source

First-passage time of run-and-tumble particles

open access: yes, 2014
We solve the problem of first-passage time for run-and-tumble particles in one dimension. Exact expression is derived for the mean first-passage time in the general case, considering external force-fields and chemotactic-fields, giving rise to space ...
Angelani, L.   +2 more
core   +1 more source

Clouds, shadows, or twilight? Mayfly nymphs recognise the difference [PDF]

open access: yes, 2006
1. We examined the relative changes in light intensity that initiate night-time locomotor activity changes in nymphs of the mayfly, Stenonema modestum (Heptageniidae).
Allan J.D.   +29 more
core   +3 more sources

Animal migration research takes wing [PDF]

open access: yesCurrent Biology, 2018
In the beginning there was great confusion about animal migration. Aristotle, noting that the types of birds around him changed with the seasons, concluded that summer redstarts turned into robins at the onset of winter, and that garden warblers became blackcaps [1]. Others thought that birds disappear in winter because they hibernate submerged in mud.
openaire   +2 more sources

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