Results 151 to 160 of about 14,100 (262)

Individual Discrimination Within, but Not Between, Two Vocalization Types of the Black‐Capped Chickadee

open access: yesEthology, EarlyView.
Black‐capped chickadees' chick‐a‐dee calls and fee‐bee songs are individually distinct. We used an operant conditioning Go/No‐go paradigm to train chickadees to discriminate among four individuals' chick‐a‐dee calls or fee‐bee songs. Chickadees successfully learned this discrimination rule.
Sarah M. L. Smeltz   +6 more
wiley   +1 more source

Unexpected diversity of alternative reproductive tactics revealed in Water Rails (Rallus aquaticus)

open access: yesIbis, EarlyView.
Monogamy in birds was long considered a general mating system until molecular studies provided evidence of alternative reproductive strategies (ARS), which are now assumed to be present in ~90% of bird species. These ARS or tactics (ART), as we consider them in this study, include extra‐pair copulation, which can lead to extra‐pair paternity or extra ...
Alexandru Nicolae Stermin   +5 more
wiley   +1 more source

Cervus mariannus Desmarest 1822

open access: yes, 1993
Cervus mariannus Desmarest, 1822. Mammalogie, in Encycl. Meth., 2:436. TYPE LOCALITY: Mariana Isis, Guam (introduced). DISTRIBUTION: Philippines: Luzon, Mindoro, Mindanao and Basilan Isis. Introduced to Mariana, Caroline and Bonin Isis (W Pacific Ocean).
openaire   +2 more sources

Radio telemetry reveals extensive dispersal capabilities of reintroduced Great Capricorn beetles (Cerambyx cerdo) in oak habitats at their northern range limit

open access: yesInsect Conservation and Diversity, EarlyView.
Extensive dispersal: Great Capricorn beetles dispersed up to 822 m in fragmented oak habitats. Sex‐independent movement: Dispersal distances were not significantly influenced by sex, body size or mating status. Conservation implications: Findings underscore the importance of large, connected habitats for beetle reintroductions.
Markus Franzén   +3 more
wiley   +1 more source

Ability to culture dermal papilla cells from red deer (Cervus elaphus) hair follicles with differing hormonal responses in vivo offers a new model for studying the control of hair follicle biology [PDF]

open access: bronze, 1996
M. Julie Thornton   +5 more
openalex   +1 more source

Risky behavior of Asian black bears differs between sex and season in a landscape fragmented by roads

open access: yesJournal of Zoology, EarlyView.
We investigated sex and seasonal differences in the road crossing behavior of Asian black bears (Ursus thibetanus) living in central Honshu Island, Japan, as an example of wildlife risk‐taking behavior in a highly fragmented landscape. Our results show that Asian black bears generally avoid crossing roads, and that there are seasonal differences in ...
S.‐Y. Baek   +5 more
wiley   +1 more source

Multi‐scalar habitat selection unveils ecological domains in wolves when selecting rendezvous sites

open access: yesJournal of Zoology, EarlyView.
Although habitat generalists, wolves may become particularly choosy when locating homesites (i.e., dens and rendezvous sites) especially in human‐modified landscapes. Using a multiscale approach, we investigated rendezvous sites (RV) selection in a historical stronghold of wolves in central Italy. Human infrastructure (i.e.
S. Droghei, M. Falco, P. Ciucci
wiley   +1 more source

Sexual Selection on Non‐Ornamental Traits Is Underpinned by Evidence of Genetic Constraints on Sex‐Biased Expression in Dusky Pipefish

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Species lacking distinct secondary sex characteristics, such as differences in size or morphology, are often thought to experience lower levels of sex‐specific selection in comparison to highly sexually dimorphic organisms. However, monomorphism in classic visible traits could be a result of genetic or physiological constraints that prevent ...
Nicole M. Tosto   +4 more
wiley   +1 more source

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