Results 11 to 20 of about 17,178 (170)

Hypopigmentation in mantled howler monkeys Alouatta palliata (gray 1849): First documented cases of whole-body leucism in South America. [PDF]

Ecol Evol, 2022
Hypopigmentation in vertebrates is the result of genetic impoverishment and it is associated with isolated populations and environmental stressors. In mantled howler monkeys Alouatta palliata (Gray 1849) there are records of hypopigmentation in Mexico and Costa Rica but this is the first documented record of whole‐body leucism in South America in a ...
Barros-Diaz C, Vela S, Gallo-Pérez A, Chiquito M, Cornejo X, Mosquera-Muñoz D, Perez-Correa J.   +6 more
europepmc   +2 more sources

Genomic erosion in a demographically recovered bird species during conservation rescue. [PDF]

Conserv Biol, 2022
Abstract The pink pigeon (Nesoenas mayeri) is an endemic species of Mauritius that has made a remarkable recovery after a severe population bottleneck in the 1970s to early 1990s. Prior to this bottleneck, an ex situ population was established from which captive‐bred individuals were released into free‐living subpopulations to increase population size ...
Jackson HA, Percival-Alwyn L, Ryan C, Albeshr MF, Venturi L, Morales HE, Mathers TC, Cocker J, Speak SA, Accinelli GG, Barker T, Heavens D, Willman F, Dawson D, Ward L, Tatayah V, Zuël N, Young R, Concannon L, Whitford H, Clavijo B, Bunbury N, Tyler KM, Ruhomaun K, Grace MK, Bruford MW, Jones CG, Tollington S, Bell DJ, Groombridge JJ, Clark M, Van Oosterhout C.   +31 more
europepmc   +2 more sources

Fitness consequences and ancestry loss in the Apennine brown bear after a simulated genetic rescue intervention

Conservation Biology, Volume 37, Issue 6, December 2023., 2023
Abstract Reduction in population size, with its predicted effects on population fitness, is the most alarming anthropogenic impact on endangered species. By introducing compatible individuals, genetic rescue (GR) is a promising but debated approach for reducing the genetic load unmasked by inbreeding and for restoring the fitness of declining ...
Francesco Maroso, Giada Padovani, Víctor Hugo Muñoz Mora, Francesco Giannelli, Emiliano Trucchi, Giorgio Bertorelle   +5 more
wiley   +1 more source

Genetic diversity and IUCN Red List status

Conservation Biology, Volume 37, Issue 4, August 2023., 2023
Abstract The International Union for Conservation of Nature (IUCN) Red List is an important and widely used tool for conservation assessment. The IUCN uses information about a species’ range, population size, habitat quality and fragmentation levels, and trends in abundance to assess extinction risk.
Chloé Schmidt, Sean Hoban, Margaret Hunter, Ivan Paz‐Vinas, Colin J. Garroway   +4 more
wiley   +1 more source

Modeling genetic benefits and financial costs of integrating biobanking into the conservation breeding of managed marsupials

Conservation Biology, Volume 37, Issue 2, April 2023., 2023
Abstract Managed breeding programs are an important tool in marsupial conservation efforts but may be costly and have adverse genetic effects in unavoidably small captive colonies. Biobanking and assisted reproductive technologies (ARTs) could help overcome these challenges, but further demonstration of their potential is required to improve uptake. We
Lachlan G. Howell, Peter R. Mawson, Pierre Comizzoli, Ryan R. Witt, Richard Frankham, Simon Clulow, Justine K. O'Brien, John Clulow, Paul Marinari, John C. Rodger   +9 more
wiley   +1 more source

Experimental admixture among geographically disjunct populations of an invasive plant yields a global mosaic of reproductive incompatibility and heterosis

Journal of Ecology, Volume 109, Issue 5, Page 2152-2162, May 2021., 2021
Biogeographic patterns of variation in reproductive success in an invasive weed with allopatric distribution. Abstract Invasive species have the ability to rapidly adapt in the new regions where they are introduced. Classic evolutionary theory predicts that the accumulation of genetic differences over time in allopatric isolation may lead to ...
Ramona E. Irimia, José L. Hierro, Soraia Branco, Gastón Sotes, Lohengrin A. Cavieres, Özkan Eren, Christopher J. Lortie, Kristine French, Ragan M. Callaway, Daniel Montesinos, Hans Jacquemyn   +10 more
wiley   +1 more source

Depressão por endogamia em populações de milho-pipoca [PDF]

Bragantia, 2004
Oito populações de milho-pipoca (CMS-42, CMS-43, Zélia, RS-20, Catedral, Zaeli, UEM-J1 e UEM-M2) foram avaliadas com o objetivo de obter estimativas de depressão por endogamia, componentes genéticos de média e comparar essas estimativas por grupos de populações.
Simon, Gustavo André, Scapim, Carlos Alberto, Pacheco, Cleso Antônio Patto, Pinto, Ronald José Barth, Braccini, Alessandro de Lucca e, Tonet, Aelton   +5 more
openaire   +3 more sources

Causas o azares: reflexiones en torno a presencia de malformaciones congénitas de la columna vertebral en poblaciones arqueológicas de la costa desértica de Antofagasta, norte de Chile

Revista Argentina de Antropología Biológica, 2020
La sacralización de la quinta vértebra lumbar corresponde a una patología escasamente reportada en la literatura bioarqueológica de las poblaciones del Norte Grande de Chile.
Pedro Manuel Andrade, Monserrat Araneda
doaj   +1 more source

Efeito da endogamia sobre características morfométricas em cavalosda raça Mangalarga Marchador

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012
Estimou-se o coeficiente de endogamia e avaliou-se seu efeito sobre características morfométricas dos animais em um criatório no norte de Minas Gerais. As características estudadas foram alturas da cernelha e da garupa, comprimentos da cabeça, do pescoço,
R.W. Gonçalves, M.D. Costa, A.S.C. Rezende, V.R. Rocha Júnior, J.R.A. Leite   +4 more
doaj   +1 more source

Diversidade genética em coleções amazônicas de germoplasma de cupuaçuzeiro [Theobroma grandiflorum (Willd. ex Spreng.) Schum.]

Revista Brasileira de Fruticultura, 2013
Este trabalho teve por finalidade avaliar a diversidade genética e o parentesco de 24 acessos de Theobroma grandiflorum, introduzidos de três unidades da Embrapa, objetivando sua utilização como genitores no programa de hibridação da espécie.
Rafael Moysés Alves, Carlos Rogério de Sousa Silva, Maria Suellem da Conceição Silva, Darly Caroline de Souza Silva, Alexandre Magno Sebbenn   +4 more
doaj   +1 more source