منابع مشابه
Pollination of two species of Ferocactus : interactions between cactus-specialist bees and their host plants
1. Resolving the controversy over the prevalence of generalization in plant–pollinator interactions requires field studies characterizing the pollination effectiveness of all a plant’s floral visitors. Herein, the pollination effectiveness of all visitors to two species of barrel cactus ( Ferocactus ) was quantified. 2. Flowers of both species were pollinated almost exclusively by cactus-specia...
متن کاملPatterns of host-plant choice in bees of the genus Chelostoma: the constraint hypothesis of host-range evolution in bees.
To trace the evolution of host-plant choice in bees of the genus Chelostoma (Megachilidae), we assessed the host plants of 35 Palearctic, North American and Indomalayan species by microscopically analyzing the pollen loads of 634 females and reconstructed their phylogenetic history based on four genes and a morphological dataset, applying both parsimony and Bayesian methods. All species except ...
متن کاملThe bees of the genus Colletes (Hymenoptera: Apoidea: Colletidae) from China.
Available information about the bees of the genus Colletes from China is summarized. Currently, 66 species are recorded from China, of which two species, Colletes linzhiensis sp. nov. and C. spinatus sp. nov., are described as new. Type specimens are deposited in the Insect Collection of the Institute of Zoology, Chinese Academy of Sciences, Beijing, China. Thirteen species are recorded for Chi...
متن کاملAustralian and New Guinean Stingless Bees of the Genus Austroplebeia Moure (Hymenoptera: Apidae)--a revision.
The stingless bee genus Austroplebeia Moure occurring in Australia and New Guinea is revised, based on a morphological analysis of samples from 177 colonies. Five species are recognised: A. cincta (Mocsáry), A. essingtoni (Cockerell), A. australis (Friese), A. cassiae (Cockerell) and A. magna, sp. nov. Three different colour morphs of A. australis are described. Five new synonymies are proposed...
متن کاملUtilization of floral resources by bees of the genus Frieseomelitta von Ihering (Hymenoptera: Apidae).
The present study intended to verify which factors (phylogenetic relationship or local ecological conditions) would determine how Frieseomelitta bees use floral resources. The data obtained in the literature on biocenotic studies of Apoidea visiting flowers in Brazil were analyzed, with identification and quantification of floral resources used by Frieseomelitta species in different areas. The ...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1900
ISSN: 0003-0147,1537-5323
DOI: 10.1086/277683