Results 11 to 20 of about 46,931 (260)

Application of Felid Hair for Non-Invasive Tracking of Animal Reproductive Status and Adrenal Activity

open access: yesAnimals, 2022
Hair can be a useful matrix to examine the hormonal status of an animal, although it is difficult to correlate the results to a specific time point. The aim of this study was to evaluate seasonal changes in cortisol and testosterone levels in the hair of
Sergey V. Naidenko   +3 more
doaj   +1 more source

The role of facial pattern variation for species recognition in red-fronted lemurs (Eulemur rufifrons)

open access: yesBMC Evolutionary Biology, 2018
Background Species recognition, i.e., the ability to distinguish conspecifics from heterospecifics, plays an essential role in reproduction. The role of facial cues for species recognition has been investigated in several non-human primate species except
Hanitriniaina Rakotonirina   +2 more
doaj   +1 more source

Honeybees (Apis mellifera) exhibit flexible visual search strategies for vertical targets presented at various heights [v2; ref status: indexed, http://f1000r.es/51p]

open access: yesF1000Research, 2015
When honeybees are presented with a colour discrimination task, they tend to choose swiftly and accurately when objects are presented in the ventral part of their frontal visual field.
Linde Morawetz   +2 more
doaj   +1 more source

Respiratory Disease Risk of Zoo-Housed Bonobos Is Associated with Sex and Betweenness Centrality in the Proximity Network

open access: yesAnimals, 2021
Infectious diseases can be considered a threat to animal welfare and are commonly spread through both direct and indirect social interactions with conspecifics. This is especially true for species with complex social lives, like primates.
Jonas R. R. Torfs   +3 more
doaj   +1 more source

Competition over guarding in the Arabian babbler (Turdoides squamiceps), a cooperative breeder [version 1; referees: 1 approved, 2 approved with reservations]

open access: yesF1000Research, 2015
Observations on 12 groups comprised of two adult males and one adult female (some included one or two fledglings), tame, individually marked, Arabian babblers (Turdoides squamiceps) in the rift valley in Israel revealed that the babblers compete to guard.
Arnon Dattner   +2 more
doaj   +1 more source

Unlearned adaptive responses to heterospecific referential alarm calls in two bird species from separate evolutionary lineages

open access: yesScientific Reports, 2023
The interspecific responses to alarm signals may be based on unlearned mechanisms but research is often constrained by the difficulties in differentiating between unlearned and learned responses in natural situations.
Jungmoon Ha   +12 more
doaj   +1 more source

Strategies of the honeybee Apis mellifera during visual search for vertical targets presented at various heights: a role for spatial attention? [v1; ref status: indexed, http://f1000r.es/3yb]

open access: yesF1000Research, 2014
When honeybees are presented with a colour discrimination task, they tend to choose swiftly and accurately when objects are presented in the ventral part of their frontal visual field.
Linde Morawetz   +2 more
doaj   +1 more source

Competition over guarding in the Arabian babbler (Turdoides squamiceps), a cooperative breeder [version 2; referees: 2 approved, 1 approved with reservations]

open access: yesF1000Research, 2016
Observations on 12 groups comprised of two adult males and one adult female (some included one or two fledglings), tame, individually marked, Arabian babblers (Turdoides squamiceps) in the rift valley in Israel revealed that the babblers compete to guard.
Arnon Dattner   +2 more
doaj   +1 more source

Complex social and political factors threaten the world's smallest primate with extinction

open access: yesConservation Science and Practice, 2022
We highlight current problems, challenges and dilemmas of conservation action in Madagascar, which is one of the poorest countries, but also the hottest global biodiversity hotspot.
Peter M. Kappeler   +4 more
doaj   +1 more source

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