Results 11 to 20 of about 83,952 (178)

Mutational load and adaptive variation are shaped by climate and species range dynamics in Vitis arizonica. [PDF]

New Phytol
Summary Genetic load can reduce fitness and hinder adaptation. While its genetic underpinnings are well established, the influence of environmental variation on genetic load is less well characterized, as is the relationship between genetic load and putatively adaptive genetic variation.
Fiscus CJ, Aguirre-Liguori JA, Gaut GRJ, Gaut BS.   +3 more
europepmc   +2 more sources

The frequency and importance of polyploidy in tropical rainforest tree radiations. [PDF]

New Phytol
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Schley RJ, Piñeiro R, Nicholls JA, Gaynor ML, Lewis GP, Fonseca Pezzini F, Dexter KG, Kidner C, Pennington RT, Twyford AD.   +9 more
europepmc   +2 more sources

A Dominant Founder Lineage Has Possible Fitness Costs for the Endangered Mexican Grey Wolf. [PDF]

Mol Ecol
ABSTRACT The Mexican grey wolf (Canis lupus baileyi) is an endangered and genetically distinct subspecies of grey wolf adapted to the warm climates of the southwestern United States and Mexico. Following centuries of eradication efforts, Mexican grey wolves were protected under the Endangered Species Act in 1976, prompting an international ex situ ...
Loera Y, Khakoo M, Krueckeberg E, Nilsson IG, Wu Z, Dwire M, Adams J, Waits L, Oakleaf JK, Campbell ML, Dunnum JL, Cook JA, vonHoldt BM.   +12 more
europepmc   +2 more sources

Variation in responses to temperature in admixed Populus genotypes predicts geographic shifts in regions where hybrids are favored. [PDF]

New Phytol
Summary Plastic responses of plants to their environment vary as a result of genetic differentiation within and among species. To accurately predict rangewide responses to climate change, it is necessary to characterize genotype‐specific reaction norms across the continuum of historic and future climate conditions comprising a species' range. The North
Mead A, Beasley-Bennett JR, Bleich A, Fischer D, Flint S, Golightly J, Kalcsits L, Klopf SK, Kulbaba MW, Lasky JR, LeBoldus JM, Lowry DB, Mitchell N, Moran E, Sexton JP, Søndreli KL, Worthing B, Zavala-Paez M, Fitzpatrick MC, Holliday J, Keller S, Hamilton JA.   +21 more
europepmc   +2 more sources

Anthropogenic or Natural Dispersal: Case of the Spiny-Tailed Iguanas (<i>Ctenosaura</i>) on Clarion Island, Mexico. [PDF]

Ecol Evol
Species can colonize oceanic islands by both natural and human‐assisted dispersal and human‐caused species introductions have had catastrophic effects on ecosystems around the world. The Spiny‐tailed Iguanas inhabiting Clarion Island were previously considered introduced. Molecular data and analyses support iguanas' arrival on Clarion Island by natural
Mulcahy DG, Reyes-Velasco J, Vázquez-Arce DI, Cervantes-Pasqualli JA, Martínez-Gómez JE, de Queiroz K.   +5 more
europepmc   +2 more sources

Variabilidad genética de familias de medios hermanos de melón criollo ecuatoriano Cucumis melo var. dudaim (L.) Naudin

Revista U.D.C.A Actualidad & Divulgación Científica, 2020
El melón, se cultiva en climas templados y cálidos de todo el mundo; no obstante, la información sobre la variabilidad genética del melón criollo ecuatoriano es limitada, para iniciar programas de mejoramiento.
José Francisco Espinosa-Carillo, Franco Alirio Vallejo-Cabrera   +1 more
doaj   +1 more source

Prenatal development of skull and brain in a mouse model of growth restriction [PDF]

, 2016
Patterns of covariation result from the over-lapping effect of several developmental processes. By perturbing certain specific developmental processes, ex-perimental studies contribute to a better understanding of their particular effects on the ...
Barbeito Andrés, Jimena, Gonzalez, Paula Natalia, Hallgrimsson, Benedikt   +2 more
core   +3 more sources

Variación genética en poblaciones mexicanas de Swietenia macrophylla King, una especie tropical en expansión geográfica reciente.

Botan‪ical Sciences, 2013
Swietenia macrophylla King, es una especie tropical que históricamente ha sido explotada por su alta calidad maderable y actualmente está catalogada como amenazada de extinción. En este estudio se usaron cuatro microsatélites nucleares polimórficos para
José Enrique Trujillo-Sierra, Patricia Delgado-Valerio, Ivón Ramírez-Morillo , Virginia Rebolledo-Camacho, Nidia Pérez-Masser   +4 more
doaj   +1 more source

Características funcionales que influyen en la respuesta a la sequía de las especies del género Quercus: variación inter- e intra-específica [PDF]

, 2014
El género Quercus sp. tiene una amplia distribución geográfica a lo largo de todo el Hemisferio Norte, y está presente desde zonas templado-frías de Europa o Norte-América, hasta zonas tropicales de América del Sur.
Aranda, Ismael, Ramírez-Valiente, Jose Alberto, Rodriguez Calcerrada, Jesus   +2 more
core   +3 more sources

Diversidad genética y conservación del quetzal Pharomachrus mocinno en Mesoamérica

Revista Mexicana de Biodiversidad, 2009
EN ESTE ESTUDIO, ANALIZAMOS LA VARIACIÓN GENÉTICA DEL QUETZAL (PHAROMACHRUS MOCINNO) A LO LARGO DE SU DISTRIBUCIÓN GEOGRÁFICA CON LA FINALIDAD DE DETERMINAR PRIORIDADES DE CONSERVACIÓN.
KEN OYAMA, MARA GARCÍA JUÁREZ, SOFÍA SOLORZANO   +2 more
doaj   +1 more source