Results 41 to 50 of about 293,125 (165)

Diversity of Termite Breeding Systems

Insects, 2019
Termites are social insects that live in colonies headed by reproductive castes. The breeding system is defined by the number of reproductive individuals in a colony and the castes to which they belong. There is tremendous variation in the breeding system of termites both within and among species.
openaire   +3 more sources

COMPARATIVE STUDIES REGARDING FORAGE INTAKE AT CHINCHILLA FUNCTION OF APPLIED BREEDING SYSTEM AND IT’S TECHNOLOGICAL INVOLVES

Scientific Papers Animal Science and Biotechnologies, 2023
The aim of this paper it is to help quantifying the forage consumption in Chinchilla farms function of breeding system. The two breeding systems adopted worldwide by the breeding farms, are on wire netting floor and bedded cages.
M. Botha, I. Bud
doaj  

Aspects of the reproductive biology of Brassavola cebolleta Rchb.f. (Orchidaceae) = Aspectos da biologia reprodutiva de Brassavola cebolleta Rchb. f. (Orchidaceae)

Acta Scientiarum: Biological Sciences, 2010
This survey assessed some aspects of the reproductive biology of Brassavola cebolleta Rchb. f. (Orchidaceae) in the Municipality of Dourados, Mato Grosso do Sul State, Brazil.
Fatima Cristina de Lazari Manente-Balestieri, André Rodrigo Rech, Yara Brito Chaim Jardim Rosa   +2 more
doaj  

Effect of gradual pollen presentation on pollination efficiency and reproduction of Vaccinium corymbosum Berkeley in two habitats

Frontiers in Ecology and Evolution
IntroductionGradual pollen presentation is a reproductive strategy for plants to improve the efficiency and accuracy of pollen export and acceptance as well as to promote outcrossing.
Ke Xin Sun, Yan Jia Zhang, Chun Zhi Zhou, Shan Lin Yang, Hui Xin Jiang, Rong Rong Cui   +5 more
doaj   +1 more source

Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil

Brazilian Archives of Biology and Technology, 2007
In order to evaluate the pollination strategies of Bignoniaceae, the floral biology and the floral visitors in five species, three cerrado shrubs (Arrabidaea brachypoda (DC.) Bor., Jacaranda decurrens Cham., and Jacaranda oxyphylla Cham.), and two lianas
Yuriko A. N. Pinto Yanagizawa, Rita de Cassia Sindrônia Maimoni-Rodella   +1 more
doaj   +1 more source

Wildlife substitution equivalents based on metabolisable energy for calculating stocking densities on Southern African wildlife ranches

South African Journal of Animal Science
This study aims to bridge the gap between the large stock unit method and the grazer and browser unit methods for estimating the stocking densities of wild herbivore ungulates on wildlife ranches and reserves using both extensive and intensive ...
CA Shepstone, N van Rooyen, MW van Rooyen, J du P Bothma, REJ Burroughs   +4 more
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Floral biology and pollination in Brazil: history and possibilities

Acta Botânica Brasílica
Pollination research in Brazil virtually started with Fritz Muller, whose insights supported Darwin's evolutionary theory. Pollination systems of Brazilian plants were studied mainly by travelling researchers until early last century when native or ...
Paulo Eugênio Oliveira, André Rodrigo Rech   +1 more
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Efeito do tipo de sistema de criação nos resultados econômicos de sistemas de produção de leite na região de Lavras (MG) Effect of the type of breeding system on the economical results of milk production systems in Lavras region (MG)

Ciência e Agrotecnologia, 2004
Objetivou-se com esta pesquisa estudar a rentabilidade da atividade leiteira de sistemas de produção de leite na região de Lavras/MG, analisando a influência do tipo do sistema de criação sobre o custo de produção do leite.
Marcos Aurélio Lopes, André Luis Ribeiro Lima, Francisval de Melo Carvalho, Ricardo Pereira Reis, Íris Cristina Santos, Fernanda Helena Saraiva   +5 more
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Early Shedding of Sepals Promotes Cross-Pollination of Actaea erythrocarpa (Ranunculaceae)

Biology
The diversity of floral traits in angiosperms has evolved over time as an adaptive response to reproductive demands. Investigating floral characteristics and pollination systems helps elucidate the evolutionary drivers behind morphological variation in ...
Jiudong Zhang, Weijun Xu, Deng Yang, Xiaoxiao Liu, Xiaohui Zhang, Rui Guo, Jing Xu, Ziwei Li, Jie Sui, Lin Wang, Tianpeng Gao   +10 more
doaj   +1 more source

Plant Mating Systems Often Vary Widely Among Populations

Frontiers in Ecology and Evolution, 2018
Most flowering plants are hermaphroditic, yet the proportion of seeds fertilized by self and outcross pollen varies widely among species, ranging from predominant self-fertilization to exclusive outcrossing.
Michael R. Whitehead, Michael R. Whitehead, Robert Lanfear, Randall J. Mitchell, Jeffrey D. Karron   +4 more
doaj   +1 more source