A Phylogenetic Analysis of Nesting Behavior in the Genus &lt;I&gt;Osmia&lt;/I&gt; (Hymenoptera: Megachilidae)

Bosch, Jordi; Maeta, Yasuo; Rust, Richard W.

doi:10.1603/0013-8746(2001)094[0617:apaonb]2.0.co;2

Cited by 42 publications

(34 citation statements)

References 35 publications

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“…These commercially managed species belong to the subgenus Osmia, which consists of 25 species (Ascher & Pickering, 2013) that form a monophyletic group with the two species-poor subgenera Monosmia Tkalců , 1974 andOrientosmia Peters, 1978 (Peters, 1978;Praz et al, 2008a). Two recent studies including several species of the Osmia s.s. group did not satisfactorily uncover their phylogenetic relationships (Bosch, Maeta & Rust, 2001;Kwon, Lee & Suh, 2003). Two recent studies including several species of the Osmia s.s. group did not satisfactorily uncover their phylogenetic relationships (Bosch, Maeta & Rust, 2001;Kwon, Lee & Suh, 2003).…”

Section: Introductionmentioning

confidence: 96%

Phylogeny and floral hosts of a predominantly pollen generalist group of mason bees (Megachilidae: Osmiini)

Haider

Dorn

Sédivy

et al. 2013

Biol J Linn Soc Lond

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Within the genus Osmia, the three subgenera Osmia, Monosmia, and Orientosmia form a closely-related group of predominantly pollen generalist ('polylectic') mason bees. Despite the great scientific and economic interest in several species of this clade, which are promoted commercially for orchard pollination, their phylogenetic relationships remain poorly understood. We inferred the phylogeny of 21 Osmia species belonging to this clade by applying Bayesian and maximum likelihood methods based on five genes and morphology. Because our results revealed paraphyly of the largest subgenus (Osmia s.s.), we synonymized Monosmia and Orientosmia under Osmia s.s. Microscopical analysis of female pollen loads revealed that five species are specialized ('oligolectic') on Fabaceae or Boraginaceae, whereas the remaining species are polylectic, harvesting pollen from up to 19 plant families. Polylecty appears to be the ancestral state, with oligolectic lineages having evolved twice independently. Among the polylectic species, several intriguing patterns of host plant use were found, suggesting that host plant choice of these bees is constrained to different degrees and governed by flower morphology, pollen chemistry or nectar availability, thus supporting previous findings on predominantly oligolectic clades of bees.

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Section: Introductionmentioning

confidence: 96%

Phylogeny and floral hosts of a predominantly pollen generalist group of mason bees (Megachilidae: Osmiini)

Haider

Dorn

Sédivy

et al. 2013

Biol J Linn Soc Lond

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“…In the case of the solitary (non-social) species-which constitute most of the world's bee fauna-the mother bee mixes pollen with sufficient nectar to form a provision mass containing all of the nutrients needed to produce one offspring. The consistencies of larval provision masses range from soupy liquids to firm doughy balls, depending on the species (or genus) of bee (Malyshev 1935;Stephen et al 1969;Bosch et al 2001). A given bee species' provision masses appear similar in consistency, but we have not had analytical means to reliably characterize the specific proportions of nectar and pollen that constitute larval provision masses.…”

Section: Introductionmentioning

confidence: 98%

Nectar and pollen sugars constituting larval provisions of the alfalfa leaf-cutting bee (Megachile rotundata) (Hymenoptera: Apiformes: Megachilidae)

2011

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As with most solitary bees, larvae of the alfalfa leaf-cutting bee, Megachile rotundata Fab., eat a diet blended from pollen and nectar of unknown proportions. In this study, we developed protocols to isolate and quantify sugars from larval provision masses. The method removed free amino acids that leach from pollen and confound chromatography, but without autohydrolyzing sucrose. Pollen sugars were a negligible fraction of provision mass sugars. Glucose and fructose constituted about half of the provision fresh weight. Sucrose in alfalfa pollen and nectar is absent from the provision, presumably enzymatically hydrolyzed to glucose and fructose in the provision. Provision masses are composed of two to three times more floral equivalents in pollen than nectar. Female M. rotundata, and other solitary bees with pasty provisions, gather proportionally more pollen than nectar compared with the resource needs of colonies of social honeybees and bumblebees.HPLC / Medicago / pollinator / Apoidea / diet

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“…In the genus Osmia, some species can facultatively overwinter as prepupae and adults. However, overwintering in adult stage is a derived trait within the Megachilidae, most of which winter as prepupae, and it is probably in relation with the early flying period of Osmia (Bosch et al 2001;Sgolastra et al 2012). In O. bicornis, adults overwinter as imago inside a cocoon through the winter months (Giejdasz and Wilkaniec 2002).…”

Section: Introductionmentioning

confidence: 99%

Overwintering strategies in the red mason solitary bee—physiological correlates of midgut metabolic activity and turnover of nutrient reserves in females of Osmia bicornis

et al. 2013

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A Phylogenetic Analysis of Nesting Behavior in the Genus <I>Osmia</I> (Hymenoptera: Megachilidae)

Cited by 42 publications

References 35 publications

Phylogeny and floral hosts of a predominantly pollen generalist group of mason bees (Megachilidae: Osmiini)

Phylogeny and floral hosts of a predominantly pollen generalist group of mason bees (Megachilidae: Osmiini)

Nectar and pollen sugars constituting larval provisions of the alfalfa leaf-cutting bee (Megachile rotundata) (Hymenoptera: Apiformes: Megachilidae)

Overwintering strategies in the red mason solitary bee—physiological correlates of midgut metabolic activity and turnover of nutrient reserves in females of Osmia bicornis

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