Results 1 to 10 of about 512 (165)

Ensemble Modeling Reveals Threats to Pollination Services From Asynchronous Range Shifts Between Camellia oleifera and Its Specialized Wild Bee Pollinators [PDF]

open access: yesEcology and Evolution
Camellia oleifera is a self‐incompatible woody oil crop endemic to China that relies solely on insect pollination for seed production. Its flowering period, from late October to late December, coincides with seasonally low temperatures that suppress ...
Linjie Chen   +6 more
doaj   +3 more sources

New and little-known bees of the genus Colletes Latreille, 1802 (Hymenoptera, Colletidae) from Siberia [PDF]

open access: yesJournal of Hymenoptera Research, 2023
An annotated list of seven species of rarely collected and little-known bees of the genus Colletes from Siberia is given, including five species whose ranges within the region are enlarged. Colletes ravuloides Kuhlmann & Proshchalykin, sp.
Michael Kuhlmann
exaly   +4 more sources

New and little-known bees of the genus Colletes Latreille, 1802 (Hymenoptera, Colletidae) from the Nakhchivan Autonomous Republic of Azerbaijan, with descriptions of two new species [PDF]

open access: yesZooKeys
Data on 14 species of the genus Colletes Latreille, 1802 collected in the Nakhchivan Autonomous Republic of Azerbaijan in 2018–2025 are provided. Among them, Colletes perplexus sp. nov. is described as new to science. Colletes caskanus (Strand, 1919), C.
Michael Kuhlmann   +2 more
doaj   +4 more sources

Thermal Tolerance in the Cellophane Bee Colletes inaequalis Reflects Early Spring Adaptation and Is Independent of Body Size and Sex [PDF]

open access: yesEcology and Evolution
Colletes inaequalis Say is a univoltine, ground‐nesting solitary bee and one of the first pollinators to emerge in the North American springtime. Males emerge earlier and are smaller than females.
Victor H. Gonzalez   +4 more
doaj   +2 more sources

Narrow flower specialization in two European bee species of the genus Colletes (Hymenoptera: Apoidea: Colletidae)

open access: yesEuropean Journal of Entomology, 2003
Colletes anchusae Noskiewicz, 1924 and C. wolfi Kuhlmann, 1999 (Colletidae) are closely related bee species with vicariant distributions, the former occurring in east and southeast Europe and Turkey, the latter restricted to the Italian peninsula ...
Michael Kuhlmann
exaly   +3 more sources

Population genomics and phylogeography of Colletes gigas, a wild bee specialized on winter flowering plants [PDF]

open access: yesEcology and Evolution, 2022
Diet specialization may affect the population genetic structure of pollinators by reducing gene flow and driving genetic differentiation, especially in pollen‐specialist bees.
Tianjuan Su   +5 more
doaj   +2 more sources

Risk assessment requires several bee species to address species-specific sensitivity to insecticides at field-realistic concentrations [PDF]

open access: yesScientific Reports, 2023
In the European registration process, pesticides are currently mainly tested on the honey bee. Since sensitivity data for other bee species are lacking for the majority of xenobiotics, it is unclear if and to which extent this model species can ...
Tobias Jütte   +4 more
doaj   +2 more sources

A Naturally Active Spy Transposon Discovered from the Insect Genome of Colletes gigas as a Promising Novel Gene Transfer Tool [PDF]

open access: yesAdvanced Science
Novel active DNA transposons, such as Spy transposons from the PHIS superfamily, are identified through bioinformatics in this study. The native transposases cgSpy and cvSpy displayed transposition activities of approximately 85% and 35% compared to the ...
Mohamed Diaby   +10 more
doaj   +2 more sources

Twenty New Records of Bees (Hymenoptera, Apoidea) for Sardinia (Italy) [PDF]

open access: yesInsects, 2021
In Sardinia, the second largest Mediterranean island, 316 species of bees are known. Here, for the first time, the following 20 taxa are reported: Colletes cunicularius (Linnaeus, 1761), and C. eous Morice, 1904 (Colletidae); Andrena humilis Imhoff, 1832,
Vittorio Nobile   +8 more
doaj   +2 more sources

Comparison of the Pollen Deposition and Carrying Efficiency of Four Wild Pollinators for Oil-Seed Camellia Trees [PDF]

open access: yesInsects
To investigate how insect hair morphology influences pollination effectiveness, this study examined four common wild pollinators in Camellia oleifera plantations: two bee species (Colletes gigas and Apis cerana) and two hornet species (Vespa velutina and
Zijian Li   +6 more
doaj   +2 more sources

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