Results 41 to 50 of about 5,136 (216)

Breeding Dispersal and Philopatry in the Tree Swallow [PDF]

The Condor, 2004
AbstractTo study the patterns and determinants of philopatry and breeding dispersal in the Tree Swallow (Tachycineta bicolor) we analyzed the records of 356 males and 1459 females captured in more than one breeding year around Ithaca, New York. Of these captures, only 4% of male and 14% of female breeders dispersed to a new site for breeding.
David W. Winkler, Peter H. Wrege, Paul E. Allen, Tracey L. Kast, Pixie Senesac, Matthew F. Wasson, Paulo E. Llambías, Valentina Ferretti, Patrick J. Sullivan   +8 more
openaire   +1 more source

Assessing genetic diversity in a reintroduced Mediterranean griffon vulture Gyps fulvus population to inform long‐term conservation management

Wildlife Biology, EarlyView.
Reintroductions play a key role in conservation biology. Their long‐term success strongly depends on maximizing the genetic diversity of founders, as well as on ensuring ecological connectivity with adjacent populations. Accordingly, evaluating the conservation status of reintroduced populations to limit the loss of their genetic diversity requires ...
Nicolò Borgianni, Mario Posillico, Lorenzo Attili, Paolo Ciucci, Rita Lorenzini, Luisa Garofalo   +5 more
wiley   +1 more source

Evolution and function of fossoriality in the carnivora: implications for group-living

Frontiers in Ecology and Evolution, 2015
The societies of group-living carnivores that neither hunt nor interact cooperatively may arise due to ecological drivers and/or constraints. In this study we evaluate whether group-living may be intrinsically associated with fossoriality; a link that is
Michael James Noonan, Chris eNewman, Christina D Buesching, David Whyte Macdonald   +3 more
doaj   +1 more source

Long‐term patterns of breeding range expansion mirror invasion dynamics during recolonisation of a semi‐colonial raptor

Journal of Animal Ecology, EarlyView.
We used a unique long‐term dataset of population recovery in the Osprey Pandion haliaetus to reveal the similarity in spatial patterns underpinning recolonisations and biological invasions. Our findings highlight the importance of rare pioneering movements in driving range expansion, and the value of conservation interventions such as species ...
Brittany C. Maxted, Richard A. Stillman, Phillipa K. Gillingham, Ross A. Hill, Tim Mackrill, Roy Dennis   +5 more
wiley   +1 more source

Gene diversity and female philopatry. [PDF]

Genetics, 1991
Abstract The effect of female philopatry on the apportionment of gene diversity within a population is evaluated. Even with random mate selection, the apportionment of gene diversity within and among social lineages (groups of related females) is inherently different than in classically defined demic groups.
openaire   +2 more sources

Extreme natal philopatry in female Antarctic fur seals (Arctocephalus gazella).

, 2012
Hoffman J, Forcada J. Extreme natal philopatry in female Antarctic fur seals (Arctocephalus gazella). Mammalian Biology.
Hoffman, Joseph ; https://orcid.org/, Forcada, J.   +1 more
core   +2 more sources

Breeding-site fidelity of an obligate grassland bird in the Northern Great Plains

Journal of Field Ornithology
Many migratory birds show breeding-site fidelity, but research has focused primarily on shrubland and forest species, with grassland birds largely overlooked.
Justin R. Clarke, Torre J. Hovick, Kevin Sedivec   +2 more
doaj   +1 more source

Understanding natal emigration in group‐living carnivores

Journal of Animal Ecology, EarlyView.
Dispersal is a key ecological and evolutionary process, yet drivers of variation in emigration under human‐modified conditions remain understudied. Using a novel genetic approach applied to harvested grey wolves in Idaho, USA, we found that prey availability and population density shape natal emigration patterns in a cooperative breeder.
Kathleen M. Petersen, Joel M. Tebbenkamp, Matthew A. Mumma, David E. Ausband   +3 more
wiley   +1 more source

Strong Philopatry, Isolation by Distance, and Local Habitat Have Promoted Genetic Structure in Heermann’s Gull

Diversity, 2022
Philopatry can promote genetic differentiation among populations but remains undescribed in many seabirds. Hence, we explored such associations in Heermann’s Gull.
Misael Daniel Mancilla-Morales, Enriqueta Velarde, Andres Aguilar, Araceli Contreras-Rodríguez, Exequiel Ezcurra, Jesús A. Rosas-Rodríguez, José G. Soñanez-Organis, Enrico A. Ruiz   +7 more
doaj   +1 more source

Male production in green sea turtles under a feminizing climate: A validated model of sex ratios with temperature‐dependent sex determination

Journal of Animal Ecology, EarlyView.
This study introduces validated methods to predict sex ratios in wild Green sea turtle (Chelonia mydas) nests. It quantifies beach‐scale temperature heterogeneity, incorporates clutch‐level variation in thermal sensitivity and models temperature effects across the thermosensitive period, demonstrating how temporal temperature dynamics and spatial ...
Marc Girondot, Emily Turla, Kirsty Scott, Jeanette Wyneken   +3 more
wiley   +1 more source