Results 101 to 110 of about 69,566 (258)

Optimizing genetic diversity in Australian Holsteins and Jerseys: A comparative analysis of whole-genome and regional inbreeding depression effects

Journal of Dairy Science
: Homozygosity, which can arise from several genetic mechanisms including inbreeding, is frequently observed in the offspring of related parents. This inbreeding can lead to a reduced performance, owing to a phenomenon known as inbreeding depression ...
B.A. Scott, M. Haile-Mariam, F. Tiezzi, I. van den Berg, C. Maltecca, J.E. Pryce   +5 more
doaj   +1 more source

Heightened threats to small woodland caribou populations in Canada and key considerations for their persistence Menaces pesant sur les petites populations de caribou des bois au Canada et considérations essentielles à leur rétablissement

Wildlife Monographs, EarlyView.
Abstract Woodland caribou (Rangifer tarandus) are one of the most iconic wildlife species in Canada. These large ungulates depend on undisturbed, interconnected assemblages of mature and old‐growth conifer forests for survival, and exhibit life‐history traits typical of K‐selected species (i.e., low reproductive rates, long generation times, and slow ...
Anna M. Calvert, Mathieu Leblond, Esther Chang   +2 more
wiley   +1 more source

Localized resources enable noninvasive genetic monitoring of small populations of mountain ungulates

Wildlife Society Bulletin, EarlyView.
Using microsatellite analysis of fecal samples collected at mineral licks from 2019–2022, we assessed abundance, apparent survival and genetics of bighorn sheep in the Teton Range, Wyoming, USA. Annual abundance estimates ranged from 118−132 individuals split into 2 similar‐sized demes and apparent survival estimates ranged from 0.72–0.92.
Carson J. Butler, Mary M. Conner, Rachel S. Crowhurst, Sarah R. Dewey, Clinton W. Epps   +4 more
wiley   +1 more source

A multivariate analysis with direct additive and inbreeding depression load effects

Genetics Selection Evolution, 2019
Background Inbreeding is caused by mating between related individuals and its most common consequence is inbreeding depression. Several studies have detected heterogeneity in inbreeding depression among founder individuals, and recently a procedure for ...
Luis Varona, Juan Altarriba, Carlos Moreno, María Martínez-Castillero, Joaquim Casellas   +4 more
doaj   +1 more source

THE EFFECT OF IMPROVED REPRODUCTIVE-PERFORMANCE ON GENETIC GAIN AND INBREEDING IN MOET BREEDING SCHEMES FOR BEEF-CATTLE [PDF]

, 1995
The effect of improved reproductive techniques on genetic progress and inbreeding was investigated in MOET (multiple ovulation and embryo transfer) schemes for beef cattle.
B Villanueva, JA Woolliams, Woolliams, JA, Villanueva, B., B Villanueva, Villanueva, B, Simm, Geoff, Simm, G, Woolliams, John, G. Simm, G Simm, B. Villanueva   +11 more
core   +1 more source

Integrating Biobanking Into Conservation Practice: The Development and Impact of the EAZA Biobank

Zoo Biology, EarlyView.
Overview of the structural setup and terms of service of the EAZA Biobank, Left panel illustrates for samples stored at ‐80ºC sampling (1), submission (2), storage (3) in one of the four hubs hosted at: Antwerp Zoo (Belgium), Royal Zoological Society of Scotland (RZSS) (United Kingdom), Leibniz Institute for Zoo and Wildlife Research (IZW) (Germany ...
Christina Hvilsom, Philippe Helsen, Alexander Ball, Andrew Mooney, Susan Lorene Walker, Imke Wiemann, Andrew C. Kitchener, Baptiste Mulot, Louise Gibson, Jörns Fickel, Anna Mekarska, Elmar Fienieg, Zjef J. J. M. Pereboom   +12 more
wiley   +1 more source

Testicular Echobiometry and Sperm Characterization in Oncilla (Leopardus tigrinus) From the Caatinga Biome

Zoo Biology, EarlyView.
We describe testicular echobiometry and sperm characterization in oncilla (Leopardus tigrinus) from the Caatinga biome, Ceará, Brazil. ABSTRACT Among neotropical small felids, the Leopardus tigrinus is classified as vulnerable by the International Union for Conservation of Nature, but studies on reproductive morphology and physiology are scarce for ...
Yuri Gonçalves Matos, Herlon Victor Rodrigues Silva, Bruna Farias Brito, Patrícia Vasconcelos Alves, Romário Parente dos Santos, Andreia Maria da Silva, Alexsandra Fernandes Pereira, Wojciech Janusz Niżański, Alexandre Rodrigues Silva   +8 more
wiley   +1 more source

Correlation Analysis among the Various Inbreeding Coefficients of Pannon Ka Rabbits

Diversity
In a closed population with a limited population size, mating of related animals is unavoidable. In this study, the genealogy data of a synthetic maternal rabbit breed called Pannon Ka were used to calculate different inbreeding coefficients.
István Nagy, Árpád Bokor, János Farkas, Anh Thi Nguyen, János Posta, György Kövér   +5 more
doaj   +1 more source

Incestuous sisters: mate preference for brothers over unrelated males in Drosophila melanogaster.

PLoS ONE, 2012
The literature is full of examples of inbreeding avoidance, while recent mathematical models predict that inbreeding tolerance or even inbreeding preference should be expected under several realistic conditions like e.g. polygyny.
Adeline Loyau, Jérémie H Cornuau, Jean Clobert, Etienne Danchin   +3 more
doaj   +1 more source

Behavioral inbreeding avoidance in wild African elephants

, 2007
The costs of inbreeding depression, as well as the opportunity costs of inbreeding avoidance,determine whether and which mechanisms of inbreeding avoidance evolve. In African elephants,sex-biased dispersal does not lead to the complete separation of male
JOYCE H. POOLE, Moss, Cynthia J, Maldonado, Jesus E, SUSAN C. ALBERTS, ROBERT C. FLEISCHER, Fleischer, Robert C, Alberts, Susan C, Poole, Joyce H, JULIE A. HOLLISTER‐SMITH, Lee, Phyllis C, Archie, Elizabeth A, CYNTHIA J. MOSS, ELIZABETH A. ARCHIE, PHYLLIS C. LEE, JÉSUS E. MALDONADO, Hollister-Smith, Julie A   +15 more
core   +1 more source