Results 41 to 50 of about 5,729 (219)

Two new records of Gynandromorphs in Xylocopa (Hymenoptera, Apidae s.l.)

open access: yesPapéis Avulsos de Zoologia, 2018
Two new records of gynandromorphs in Xylocopa Latreille, 1802 (Hymenoptera, Apidae). Gynandromorphs are deviant morphological individuals with genetically distinct male and female tissues.
Rony Peterson Santos Almeida   +2 more
doaj   +1 more source

Bees (Hymenoptera: Apoidea) of the Chicago Area: Diversity and Habitat Use in an Urbanized Landscape [PDF]

open access: yes, 2018
Bees (Hymenoptera: Apoidea) were collected at 24 sites chosen to represent the diversity of urban and natural habitats in the Chicago metropolitan area. Species richness was assessed for each site.
Molumby, Alan, Przybylowicz, Tomasz
core   +2 more sources

Xylocopa (Xylocopa) valga Gerstacker 1872

open access: yes, 2020
Xylocopa (Xylocopa) valga Gerstäcker, 1872 Global distribution: Palearctic Regional distribution: Béni Mellal-Khénifra; Casablanca-Settat; Fès-Meknès; Marrakech-Safi; Oriental; Rabat-Salé-Kénitra; Souss-Massa; Tanger-Tétouan-Al Hoceima References: Codina (1923); Dusmet y Alonso (1924); Schulthess (1924); Benoist (1950b); Terzo & Rasmont (2014); Terzo ...
openaire   +1 more source

Concentrated vulnerabilities in bees: Diet specialists have smaller geographic ranges

open access: yesInsect Conservation and Diversity, EarlyView.
Niche breadth theory predicts a positive association between range size and diet breadth, which could concentrate risk among specialists, but this is not well established for bees. Using global occurrence data (range size) and natural history collection‐derived pollen data (diet breadth), we compared these traits in 633 species from six families and ...
Charles N. Thrift   +4 more
wiley   +1 more source

Biologia reprodutiva de Passiflora cincinnata Mast. (Passifloraceae) na região de Petrolina (Pernambuco, Brazil). [PDF]

open access: yes, 2017
O trabalho objetivou verificar a fenologia, a biologia floral, o comportamento e a freqüência dos visitantes florais em condições de cultivo. P.
ARAUJO, F. P. de   +5 more
core   +1 more source

Evolution of Peripheral Visual System in the Apoidea: A Role for Food Item Mobility?

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Since larger compound eyes and ocelli altogether improve vision, one may expect that insects specialised in chasing very mobile resources possess such morphological optimisation. By analysing 77 species of bees and wasps, we have found that wasps had larger eyes, but not larger ocelli, than bees.
Chiara Francesca Trisoglio   +4 more
wiley   +1 more source

Data relating to threats to passion fruit production in the Neotropics due to agricultural area loss and pollinator mismatch as consequence of climate changes

open access: yesData in Brief, 2019
The data in this article are associated with the research article ‘Agricultural area losses and pollinator mismatch due to climate changes endanger passion fruit production in the Neotropics’ (A.D. Bezerra et al. 2019).The data consists of the occurrence
Antonio Diego M. Bezerra   +4 more
doaj   +1 more source

Fire modulates the structural drivers and functioning of individual‐based plant‐pollinator networks

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
Ecological drivers that shape (positively or negatively) the plant‐pollinator network and determine plant fitness, both before and after a fire. Abstract Fire is a natural phenomenon that shapes ecosystems, but climate change and human activities have increased its frequency and magnitude, disrupting essential ecosystem services like pollination ...
Larissa Alves‐de‐Lima   +5 more
wiley   +1 more source

Bee community of a beach dune ecosystem on Maranhão Island, Brazil

open access: yesBrazilian Archives of Biology and Technology, 2007
The bee-plant community in a beach dune ecosystem in north-eastern of Brazil was studied concerning phenology and floral preference. The bees visited thirty-three species of 20 families of plants.
Patricia Maia Correia de Albuquerque   +2 more
doaj   +1 more source

The bees of Greater Puerto Rico (Hymenoptera: Apoidea: Anthophila) [PDF]

open access: yes, 2008
The bee fauna of the Greater Puerto Rico area was studied. A review of the previous relevant studies is presented. An annotated catalog and information about the origin and distributional patterns are also provided.
Franz, Nico M., Genaro, Julio A.
core   +1 more source

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