Results 31 to 40 of about 778 (136)

Exploring the exploration: implications of leaving or remaining at the natal site during the early stages of independence in a partially migratory bird

Ibis, EarlyView.
Despite being an important fraction of any animal population, juveniles are a severely understudied group. Juveniles often need to learn an array of skills that allow them to survive independently and do so while undertaking decisions that may impact their fitness, recruitment and survival, having therefore relevant demographic implications.
Manuela S. Rodrigues, Afonso D. Rocha, João P. Silva, Carlos Carrapato, Jaime A. Ramos, Pedro M. Araújo, José A. Alves   +6 more
wiley   +1 more source

Occurrence of multiple congenital anomalies in Potamotrygon amandae (Elasmobranchii, Potamotrygoninae) embryos, including the first report of bicephaly

Journal of Fish Biology, EarlyView.
Abstract Reports of teratogenic embryos in elasmobranchs have been documented in multiple species, with proposed aetiologies including environmental disturbances, genetic mutations, predation, exposure to endocrine‐disrupting compounds and maternal stress.
Douglas de Castro Ribeiro, Raquel Lopes Queiroz, Cristiéle da Silva Ribeiro   +2 more
wiley   +1 more source

Parámetros genéticos de la longitud de panícula en arroz Genetic parameters of panicle lentgh in rice crop

Acta Agronómica, 2008
La investigación se realizó durante 2007 y 2008 en dos localidades del Valle del Cauca, Colombia. Se evaluaron dos progenitores contrastantes (panícula larga: FL1028 y corta: Norin 22) y las generaciones F1, F2, RC11 y RC21.
Francisco A Amela, Franco Alirio Vallejo Cabrera, César P Martínez, Jaime C Borrero   +3 more
doaj  

Desempenho em confinamento e componentes do peso vivo de cordeiros mestiços de três grupos genéticos Performance in feedlot and non carcass components in crossbred lambs from three genetic groups

Ciência Rural, 2009
Este trabalho teve como objetivo avaliar o desempenho em confinamento e a produção de carcaça e de componentes não carcaça de cordeiros dos grupos genéticos Texel x Hampshire Down (THD), Texel x Ile de France (TIF) e Texel x Suffolk (TS).
Edson Luis de Azambuja Ribeiro, Humberto Cardoso Oliveira, Filipe Alexandre Boscaro de Castro, Ivone Yurika Mizubuti, Leandro das Dores Ferreira da Silva, Marco Aurélio Alves de Freitas Barbosa   +5 more
doaj   +1 more source

Melanism in salamanders: effects of insularity, sex and size on dorsal colouration in Salamandra salamandra

Journal of Zoology, EarlyView.
In this study we tested the effects of insularity on amphibian colouration using the fire salamander as a model system. Although increased melanism was not a consistent pattern across all islands, salamanders from one island exhibited higher proportions of black pigmentation than mainland populations, while insular populations overall showed reduced ...
L. Alarcón‐Ríos, M. Saabi González, G. Velo‐Antón   +2 more
wiley   +1 more source

Evaluación fenotípica y genética para características de crecimiento en la raza criolla colombiana Costeño con Cuernos

Ciencia y Tecnología Agropecuaria, 2007
Se establecieron componentes de varianza, así como parámetros fenotípicos y genéticos, respecto de las variables ‘peso al nacimiento’, ‘peso al destete’ (ajustado a los 270 días) y ‘peso a los 480 días’ en un hato del ganado criollo colombiano Costeño ...
Rodrigo Alfredo Martínez, Juan Esteban Pérez, Teófilo Herazo   +2 more
doaj   +1 more source

Resisting Xylella fastidiosa: xylem anatomical changes in the susceptible olive cultivar Cellina di Nardò after long‐term infection

Plant Biology, EarlyView.
After long‐term infection, the susceptible O. europaea cultivar Cellina di Nardò modified its wood anatomical traits as an adaptive response to counteract Xylella fastidiosa, exhibiting spontaneous canopy restoration. Abstract The Xylella fastidiosa subsp.
E. Sabella, D. Greco, E. Nutricati, A. Frontini, L. De Bellis, M. Vergine, A. Luvisi   +6 more
wiley   +1 more source

CLUSTERS DE ROBUSTEZ COMO CRITÉRIO DE SELEÇÃO NO MELHORAMENTO GENÉTICO PARA MITIGAÇÃO DE IMPACTOS DAS MUDANÇAS CLIMÁTICAS

Revista Brasileira de Engenharia de Biossistemas, 2018
Mudanças climáticas são previstas para as próximas décadas e, consequentemente, seus impactos na pecuária bovina, sendo a seleção nos rebanhos uma maneira de amenizá-los.
R. N. Pereira, R. L. Serodio, H. T. Ventura, F. R. Araújo Neto, N. T. Pegolo   +4 more
doaj   +1 more source

Colonisation History of Freshwater Snails Across the Atlantic and Mediterranean Islands: Insights From Mercuria (Littorinimorpha, Hydrobiidae)

Zoologica Scripta, EarlyView.
ABSTRACT Islands harbour unique biodiversity, and depending on their geological origin, they have fundamentally different colonisation histories: continental islands may contain relict faunas shaped by vicariance and sporadic gene flow, whereas oceanic islands must have been colonised across open seas, often through long‐distance dispersal events ...
Jonathan P. Miller, Omar Sánchez, Vincent Prié, Diana Delicado   +3 more
wiley   +1 more source

Sistema de información móvil para procesos de producción de semillas en bancos de recursos genéticos, caso de estudio CIAT

Revista Ingenierías Universidad de Medellín, 2016
Este artículo es una extensión de los resultados de investigación presentados en el Workshop de Tecnologías de la Información y la Comunicación Aplicadas a la Agricultura (TIC-@GRO 2015). En esta oportunidad se extienden los detalles acerca de cómo se ha
Diego Fernando Gonzalez Monroy, Angela Marcela Hernandez Arbeláez, Liliana Esther Machuca Villegas   +2 more
doaj   +1 more source