Results 21 to 30 of about 4,435 (121)

Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework

open access: yesConservation Biology, EarlyView.
Abstract Elasmobranch nurseries often differ in environmental conditions, demographics, and use patterns. These differences affect the distribution of genetic variation among nurseries. However, conservation and management strategies often fail to account for such differences because they are difficult to characterize.
Dominic G. Swift   +8 more
wiley   +1 more source

Resistência de espécies e cultivares de algodão (Gossypium spp.) ao herbicida diuron Resistance of cotton species and cultivars to the herbicide diuron

open access: yesPlanta Daninha, 1983
Objetivando-se a verificação da resistência de genótipos de algodão ao herbicida diuron, foi conduzido um ensaio de casa-de-vegetação, na Universidade Federal de Viçosa, Viçosa, MG. Utilizaram-se representantes das espécies G. hirsutum latifolium Hutch. (
N. E. de M. Beltrão   +5 more
doaj   +1 more source

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

open access: yesJournal 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   +2 more
wiley   +1 more source

Effects of selective harvest on antler size of white‐tailed deer in Texas, USA

open access: yesWildlife Monographs, Volume 222, Issue 1, June 2026.
We conducted 20 years of experiments on the selective harvest of white‐tailed deer by antler size, judged inferior, in 2 areas of South Texas, USA. Selective harvest increased the phenotypic antler size of older males in one study area but not the other. There was little evidence of evolution resulting from selective harvesting. Abstract There has been
Don A. Draeger   +8 more
wiley   +1 more source

Produção de carne em ovinos de cinco genótipos: 1. Crescimento e desenvolvimento Meat production in sheep of five genotypes: 1. Growth and development

open access: yesCiência Rural, 1996
O trabalho foi realizado no Centro de Pesquisa de Pecuária dos Campos Sulbrasileiros - CPPSUL - EMBRAPA de Bagé, RS, nos anos de 1994/95, com cordeiros das raças Texel, Romney Marsh, Corriedale, Ideal e Merino nascidos e criados até o desmame (10 semanas)
Nelson Manzoni de Oliveira   +2 more
doaj   +1 more source

A response to ‘Quantifying phenotypic plasticity at multiple levels—A comment on Gómez et al.’

open access: yesFunctional Ecology, Volume 40, Issue 3, Page 560-562, March 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract In this reply, we clarify several conceptual misunderstandings raised in response to our Perspective on quantifying phenotypic plasticity. We emphasize that our central argument concerns the rigorous estimation of the magnitude of plasticity, rather than its mere ...
José M. Gómez   +3 more
wiley   +1 more source

Relações de causa e efeito em espigas de milho relacionadas aos tipos de híbridos Path analysis on maize spikes characteristics related of the hybrid type

open access: yesCiência Rural, 2007
O peso de grãos é um dos componentes determinantes do rendimento de grãos de milho, que apresenta relações complexas com várias características morfológicas da espiga.
Sidinei José Lopes   +5 more
doaj   +1 more source

Long‐term comparison shows protected and non‐protected forests differ in harvesting, but not in wildfires or drought‐driven dieback

open access: yesJournal of Applied Ecology, Volume 63, Issue 2, February 2026.
Lower forest harvesting in Natura 2000 sites may align with socio‐economic barriers often claimed by local communities, but protection does not influence vulnerability to other disturbances. In a general scenario of reduced forest harvesting in the region, we argue that differences in harvesting due to protection are statistically significant but ...
Josep Maria Espelta   +10 more
wiley   +1 more source

Produção e composição de genótipos de cana-de-açúcar

open access: yesBoletim de Indústria Animal, 2013
Foi desenvolvido no Instituto de Zootecnia, em Nova Odessa, SP, um experimento para avaliar 60 genótipos de cana-de-açúcar, com vistas à alimentação animal. Utilizou-se o delineamento de blocos ao acaso, com 3 repetições. As produções de matéria seca foram semelhantes, todavia, com grande amplitude de variação nos dados.
João Batista de Andrade   +5 more
openaire   +4 more sources

Potencial competitivo de cultivares de trigo em função do tempo de emergência Competitive potential of wheat cultivars as affected by emergence time

open access: yesPlanta Daninha, 2009
Características morfofisiológicas de cultivares de trigo definem a sua capacidade em competir com plantas daninhas pelos recursos do meio. Objetivou-se com este trabalho quantificar variações no tempo de emergência, crescimento e desenvolvimento inicial ...
R.P. Rigoli   +4 more
doaj   +1 more source

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