Results 81 to 90 of about 18,981 (286)

The Weight of Genetic Drift: A Pedigree-Based Evaluation of the Breton Horse Population in Brazil

Veterinary Medicine International
The genetic diversity of Breton horses in Brazil is a critical concern, mainly due to the small population size and low number of births per year. Given that the inbreeding was overlooked by breeders for multiple generations, we estimated the genetic ...
Bruno B. Medeiros, Kate M. C. Barcelos, Millena Oliveira Andrade, Michele Cristina da Paz Carvalho, Victoria Rocha Miranda, Kalebe de Oliveira Maia, Susana Reinhardt, Laura Patterson Rosa   +7 more
doaj   +1 more source

Fine-tuning genomic and pedigree inbreeding rates in equine population with a deep and reliable stud book: the case of the Pura Raza Española horse

Journal of Animal Science and Biotechnology, 2022
Background Estimating inbreeding, which is omnipresent and inevitable in livestock populations, is a primary goal for management and animal breeding especially for those interested in mitigating the negative consequences of inbreeding.
Davinia Isabel Perdomo-González, Nora Laseca, Sebastián Demyda-Peyrás, Mercedes Valera, Isabel Cervantes, Antonio Molina   +5 more
doaj   +1 more source

Genomic Investigations Unveil the Genetic Underpinnings of Environmental Adaptation in African Goat Populations

Integrative Zoology, EarlyView.
This study integrates genomics and landscape genetics to analyze African goat environmental adaptation. Analyzing 1591 samples, it finds population structure differentiates geographically into four groups, with gene flow between wild Yura goats and North Africans.
Weifeng Peng, Yihua Wang, Yiyuan Zhang, Lei Gao, Lili Wu, Shuping Wang, Yiyang Gao, Wanlu Shi, Kaixin Lu, Rong Deng, Junting Li, Jing Han, Xiaohui Lu, Yujie Liu, Xiaojiao Tang, Yunxia Zhang, Guoyin Li, Li Huang, Mingsheng Yang, Xiaoyan Li   +19 more
wiley   +1 more source

On the prediction of simultaneous inbreeding coefficients at multiple loci

Genetical Research, 2004
A new deterministic method for predicting simultaneous inbreeding coefficients at three and four loci is presented. The method involves calculating the conditional probability of IBD (identical by descent) at one locus given IBD at other loci, and multiplying this probability by the prior probability of the latter loci being simultaneously IBD.
Hernandez Sanchez, Julio, Haley, Chris, Woolliams, John   +2 more
openaire   +3 more sources

Inverse inbreeding coefficient problems with an application to linkage analysis of recessive diseases in inbred populations

, 2000
Medical geneticists connect relatives having the same disease into a family structure called a pedigree. Genetic linkage analysis uses pedigrees to find the approximate chromosomal locations of disease-causing genes. The problem of choosing a pedigree is
Biesecker, Leslie G., Agarwala, Richa, Schäffer, Alejandro A., Richa Agarwala, Alejandro A. Schäffer, Leslie G. Biesecker   +5 more
core   +1 more source

Decades of Enclosure Protection Exert Composite Effects on Grassland Grasshopper Communities

Integrative Zoology, EarlyView.
Decades of enclosure protection have altered grasshopper community structure, with species‐specific effects on population dynamics. For the low‐mobility grasshopper Chorthippus fallax, abundance did not differ strongly between exclosure‐protected and overgrazed areas, but its egg development duration was longer in exclosures. The two C.
Dan‐dan Feng, Hui‐feng Zhao, Ya‐hui Men, Jing Li, Mei‐ling Yang, Cai‐qing Yang, Bing Chen, Ai‐bing Zhang   +7 more
wiley   +1 more source

An indirect approach to the extensive calculation of relationship coefficients

Genetics Selection Evolution, 2002
A method was described for calculating population statistics on relationship coefficients without using corresponding individual data. It relied on the structure of the inverse of the numerator relationship matrix between individuals under investigation ...
Colleau Jean-Jacques
doaj   +1 more source

Species‐Specific Genetic Patterns in Sympatric Freshwater Turtles Challenge a Generalized Multi‐Species Conservation Approach

Animal Conservation, EarlyView.
We compared genetic diversity and spatial genetic structure in the snapping turtle (Chelydra serpentina; left panel), Blanding's turtle (Emydoidea blandingii; bottom right), and spotted turtle (Clemmys guttata; top right) sampled in areas of co‐occurrence across ~49,160 km2.
Christina M. Davy, Erica Newton, Niamh Wall, Robert W. Murphy   +3 more
wiley   +1 more source

Result of regression analyses between genomic inbreeding (F_ROH) coefficient and pedigree inbreeding.

Result of regression analyses between genomic inbreeding (FROH) coefficient and pedigree inbreeding.
Joanir Pereira Eler (4680946), Rafael Espigolan (3160104), Camila Alves dos Santos (18446402), Gabriela Giacomini (18446408), Tiago do Prado Paim (18446411), José Bento Sterman Ferraz (4680952), Elisangela Chicaroni de Mattos Oliveira (18446405)   +6 more
core   +1 more source

Nest Survival Models and Genomics Illuminate Hybridisation Attempts, Guiding Culturally Informed Management to Recover a Critically Endangered Seabird

Animal Conservation, EarlyView.
Long‐term monitoring has revealed hybridisation attempts between the Critically Endangered Kuaka Whenua Hou (KWH, Pelecanoides whenuahouensis) and the abundant Kuaka (P. urinatrix). Here we use modelling based on population monitoring data in tandem with genomic data to investigate these attempts and the risk they pose to KWH recovery.
N. J. Forsdick, T. R. Buckley, T. Davis, I. Debski, J. H. Fischer   +4 more
wiley   +1 more source