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Honey bee contribution to canola pollination in Southern Brazil Scientia Agricola
Rosa,Annelise de Souza; Blochtein,Betina; Lima,Diego Kweco.
Although canola, (Brassica napus L.), is considered a self-pollinating crop, researchers have indicated that crop productivity increases as a result of honey bee Apis mellifera L. pollination. Given this crop's growing importance in Rio Grande do Sul State, Brazil, this work evaluated the increase in pod and seed productivity with respect to interactions with anthophilous insects and manual pollination tests. The visiting frequency of A. mellifera was correlated with the crop's blooming progression, and productivity comparisons were made between plants visited by insects, manually pollinated plants (geitonogamy and xenogamy) and plants without pollination induction. Pod set and seed production per plant were determined for each treatment. Among the 8,624...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Flower-visiting insects; Blooming; Canola productivity.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200018
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To make a meadow it takes a clover and a bee: the entomophilous flora of N.W. Europe and its insects Naturalis
Ellis, Willem N.; Ellis-Adam, Albertine C..
An analysis of the anthophilous fauna of N.W. Europe is presented, stressing the role plants play for insects. The study is based on some 29,000 relations between about 2,600 insect species and 1,300 plant species (569 genera). The data are derived from our database (“CrypTra”) of biotic relations between Cryptobiota and Tracheophyta, that is based on published sources. It is suggested that a ratio of 2 to 5 anthophilous insect species per entomophilous plant species is the rule in N.W. Europe, where other types of zoophily are virtually absent. A small minority of the plant species/genera play a disproportionally important role as hosts to flower visitors; many of these so-called cornucopian taxa belong to the commonest entomophilous plants in the region,...
Tipo: Article / Letter to the editor Palavras-chave: Flower-visiting insects; Insect conservation; Anthophilous fauna; Cornucopian species; Flower types; Integrated pest management.
Ano: 1994 URL: http://www.repository.naturalis.nl/record/504254
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Variation in Native Bee Faunas and its Implications for Detecting Community Changes Ecology and Society
Williams, Neal M; University of Calgary; nwilliam@ucalgary.ca; Minckley, Robert L; University of Utah; minckley@biology.utah.edu; Silveira, Fernando A; Universidade Federal de Minas Gerais; fernando@mono.icb.ufmg.br.
Changes in flower-visiting insect populations or communities that result from human impacts can be documented by measuring spatial or temporal trends, or by comparing abundance or species composition before and after disturbance. The level of naturally occurring variation in populations and communities over space and time will dictate the sampling effort required to detect human-induced changes. We compiled a set of existing surveys of the bee faunas of natural communities from around the world to examine patterns of abundance and richness. We focused on a subset of these studies to illustrate variation in bee communities among different sites and within sites over different spatial and temporal scales. We used examples from our compilation and other...
Tipo: Peer-Reviewed Reports Palavras-chave: Apiformes; Apoidea; Faunal surveys; Flower-visiting insects; Functional groups; Monitoring long-term changes; Sampling protocol; Solitary bees; Species composition; Species richness; Worldwide bee faunas.
Ano: 2001
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