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broodcells, etc ; Apidae; Centris; agricultural research; Show all 4 Subjects
Abstract:
... In this study, we present for the first time information on nesting site, the architecture of nests, sex ration, and development of Centris (Trachina) perforator. Furthermore, we revised the literature and summarized the information on the nest biology of ground-nesting species of Centris. The nest of C. perforator consists of a main short tunnel that is split into branches with 2 to 15 brood cell ...
... Parental care directed to adult offspring is uncommon in animals. Such parental care has been documented in Xylocopinae bees (Hymenoptera: Apidae). Moreover, some Ceratina bees (Xylocopinae) are known to feed mature siblings, and feeding of mature siblings is achieved by dwarf eldest daughters when mothers died. These daughters are intentionally malnourished by mothers and usually originate from t ...
... The number of cases of European foulbrood (EFB) increased massively in Switzerland since 2000. According to Swiss legislation, the health status of all colonies within one kilometer from a case needs to be identified by a bee inspector. This results in a workload too high to be handled in due time in areas with a high prevalence and high colony density. Therefore, the primary goal of this study wa ...
broodcells, etc ; Apidae; adults; agricultural research; bees; diapause; larvae; soil; urban areas; Brazil; Show all 10 Subjects
Abstract:
... An aggregation of the oil-collecting bee Epicharis (Triepicharis) analis Lepeletier was studied at the Jardim Botânico do Rio de Janeiro, Brazil. The nesting area occupied 609 m² of mostly sandy flat soil. The nest architecture was relatively simple, with a main tunnel of approximately 45 cm in depth with two to five lateral tunnels ending in a single brood cell. The entrance remained open, but no ...
broodcells, etc ; Neotropics; Pompilidae; bamboos; females; habitat fragmentation; hosts; new host records; wasps; Brazil; Show all 10 Subjects
Abstract:
... We provide a new host record for the cleptoparasitic wasp Irenangelus lucidus (Evans, 1969) (Pompilidae: Ceropalinae). A single female emerged from a brood cell of the host species Auplopus militaris (Lynch-Arribalzaga, 1873) (Pompilidae: Pepsinae) reared from a bamboo cane trap nest set at the edge of a gallery forest fragment located in Minas Gerais State, Central Brazil. This is the third host ...
broodcells, etc ; Osmia; apiculture; diapause; immatures; mortality; overwintering; progeny; research; temperature; weather; wood; Utah; Show all 13 Subjects
Abstract:
... Several species of Osmia bees are parsivoltine, i.e., individuals of a cohort diapause for either one or two winters before emerging as adults. Frequently, contents of single nests are mixed, containing both one- and two-year morphs, commonly in an unpatterned array. We asked if the incidence of one- and two-year morphs, and mixed nests, was associated with elevation and decreasing average tempera ...
broodcells, etc ; Hymenoptera; applied ecology; bees; biodiversity; biological control; ecosystems; forests; humans; landscapes; pollination; social welfare; wasps; Brazil; Show all 14 Subjects
Abstract:
... Increasing biodiversity loss due to human activities may compromise ecosystem functions and services, with serious consequences for human well-being. Pollination and biological control are among the ecosystem services most affected by landscape changes, where cavity-nesting hymenopteran species are important agents of such services. We analyzed how cavity-nesting bee and wasp communities are affec ...
... Some species of two tribes (Anthidiini and Osmiini) of the bee family Megachilidae utilize empty gastropod shells as nesting cavities. While snail-nesting Osmiini have been more frequently studied and the nesting biology of several species is well-known, much less is known about the habits of snail-nesting Anthidiini. We collected nests of four species of the genus Rhodanthidium (R. septemdentatum ...
broodcells, etc ; Brassica napus; adult development; flowers; issues and policy; neonicotinoid insecticides; pollinators; solitary bees; species diversity; wild plants; Show all 10 Subjects
Abstract:
... Pollinator declines in agricultural landscapes are driven by multiple stressors, but potential interactions of these remain poorly studied. Using a highly replicated semi‐field study with 56 mesocosms of varying wild plant diversity (2–16 species) and oilseed rape treated with a neonicotinoid, we tested the interacting effects of resource diversity and insecticides on reproduction of a solitary wi ...
... The alfalfa leafcutting bee Megachile rotundata (Fabricius) (Hymenoptera: Megachilidae) is the primary pollinator for the alfalfa seed industry. It is a solitary cavity nesting bee that utilizes leaf lined brood cells provisioned with pollen for larval development and pupation into the adult stage. During development, multiple pathogens, parasitoids, and predators can prey upon or use the larvae a ...
Hélène Dechatre; Lucie Michel; Samuel Soubeyrand; Alban Maisonnasse; Pierre Moreau; Yannick Poquet; Maryline Pioz; Cyril Vidau; Benjamin Basso; Fanny Mondet; André Kretzschmar
broodcells, etc ; Varroa destructor; apiculture; honey bees; mites; models; population size; spring; summer; France; Show all 10 Subjects
Abstract:
... The parasitic Varroa destructor is considered a major pathogenic threat to honey bees and to beekeeping. Without regular treatment against this mite, honey bee colonies can collapse within a 2–3-year period in temperate climates. Beyond this dramatic scenario, Varroa induces reductions in colony performance, which can have significant economic impacts for beekeepers. Unfortunately, until now, it h ...
... The honey bee (Apis mellifera L. 1778) is an essential element in maintaining the diversity of the biosphere and food production. One of its most important parasites is Varroa destructor, Anderson and Trueman, 2000, which plays a role in the vectoring of deformed wing virus (DWV) in honey bee colonies. Our aim was to measure the potential morphometric changes in the pre-imaginal stage of A. mellif ...
broodcells, etc ; Bombus terrestris; Phacelia tanacetifolia; agricultural land; arable soils; body size; continuous cropping; flowers; forbs; insects; landscapes; lentils; organic production; pollen; pollinators; seed mixtures; species diversity; weight gain; wild plants; winter; winter wheat; Show all 21 Subjects
Abstract:
... Scant floral resources are a major cause of declining pollinator populations in farmland. Measures to increase floral resources on arable land include agronomically non‐productive approaches, like flowering fields (seed mixture of flowering forbs sown on fallows) and production‐integrated approaches like organically farmed crops sustaining flowering arable wild plants. However, little is known abo ...
broodcells, etc ; Hymenoptera; apples; bees; brood parasitism; ecosystem services; entomology; flowers; forests; progeny; species richness; summer; understory; wasps; Show all 14 Subjects
Abstract:
... Commercially reared cavity‐nesting bees have been studied mainly in large, intensively managed orchards. However, knowledge on wild cavity‐nesting bee and wasp communities and their potential limitations in smaller orchards remain insufficient. We compared the colonization rate of trapnests, nesting success, parasitism and response to flower resources of cavity‐nesting bees and wasps between apple ...
broodcells, etc ; Osmia; Prunus avium; apples; barcoding; bees; decline; flowers; fruit trees; parasites; parasitology; pollen; pollinators; population dynamics; Show all 14 Subjects
Abstract:
... Parasites influence wild bee population dynamics and are regarded as one of the main drivers of wild bee decline. Most of these parasites are mainly transmitted between bee species via the use of shared floral resources. Disturbance of the plant-pollinator network at a location can hence disturb the transmission of these parasites. Expansion and intensification of agriculture, another major driver ...
broodcells, etc ; Melipona scutellaris; beeswax; biometry; honey; stingless bees; Show all 6 Subjects
Abstract:
... The objective of this research is to reduce the dimensionality of the set of original variables related to honey production and biometric measurements of stingless bees, eliminating redundant variables and recommending possible variables that should be maintained in future studies. Four collections were performed at 30-day intervals, consisting of the evaluation of each colony, considering the fol ...
broodcells, etc ; Colletes; bees; fungi; larvae; late flowering; liquefaction; winter; Show all 8 Subjects
Abstract:
... Most temperate wild bees overwinter in the larval or imaginal stage inside their nests after the entire larval food provisions have been consumed. Here, we report on the finding that Colletes hederae (Colletidae), a late-flying European bee species active in September and October, passes the winter as half-grown larva inside the brood cell that still contains considerable amounts of stored food. W ...
broodcells, etc ; community structure; forests; functional diversity; land use; landscapes; methodology; orchards; parasitoids; population; rain; solitary bees; species diversity; subtropics; tropics; wasps; Queensland; Show all 17 Subjects
Abstract:
... (1) Background: Landscape simplification is a major threat to bee and wasp conservation in the tropics, but reliable, long-term population data are lacking. We investigated how community composition, diversity, and abundance of tropical solitary bees and wasps change with landscape simplification (plant diversity, plant richness, distance from forest, forest cover, and land use type) and season. ( ...
broodcells, etc ; Ceratina; adulthood; bees; females; males; mothers; nesting; progeny; reproduction; sexual dimorphism; Show all 11 Subjects
Abstract:
... 1. Maternal investment can be influenced by several factors, especially maternal quality and possibilities for future reproduction. Mass provisioning Hymenoptera are an excellent group for measuring maternal investment because mothers distribute food sources to each brood cell for each offspring separately. Generally in aculeate Hymenoptera, larger females produce larger offspring and invest more ...
broodcells, etc ; Apidae; color; forests; habitats; honey; insect physiology; nesting sites; pollen; species identification; trees; Kenya; Show all 12 Subjects
Abstract:
... Hypotrigona species are difficult to identify morphologically. Here, we show that nest sites and nest architecture can be used to discriminate three Hypotrigona species found in Kenya. Hypotrigona gribodoi, H. araujoi and H. ruspolii colonies from Kakamega forest and H. gribodoi from Mwingi, were collected and placed in a meliponiary at the International Centre of Insect Physiology and Ecology (IC ...