Results 51 to 60 of about 4,673 (168)

Un ginandromorfo de Xylocopa nigrocincta Smith (Hymenoptera: Apidae) [PDF]

open access: yes, 2009
We describe a mixed gynandromorph of Xylocopa (Neoxylocopa) nigrocincta from a single specimen from Argentina. The specimen presents bilateral asymmetry, with the right half of its head displaying male characters and the left half displaying female ...
Abrahamovich, Alberto Horacio   +2 more
core   +2 more sources

Conservation Assessment for Whorled Rosinweed (Silphium trifoliatum L.) [PDF]

open access: yes, 2004
issued October 1, 2004Report issued on: October 1, 2004INHS Technical Report prepared for USDA Forest Service, Eastern ...
Molano-Flores, Brenda
core  

Exploring the Diverse Range of Bee Pollinators Associated with the Medicinal Plant Vitex negundo (Lamiaceae) in West Bengal, India [PDF]

open access: yes
Chinese chaste tree, Vitex negundo L., (family Lamiaceae) is an important medicinal plant. The present study focused on the floral morphology and the diversity of bees pollinating its flowers in three different geographical regions of West Bengal ...
A, Rameshkumar   +6 more
core   +2 more sources

A Mid-Cretaceous Origin of Sociality in Xylocopine Bees with Only Two Origins of True Worker Castes Indicates Severe Barriers to Eusociality [PDF]

open access: yes, 2012
The origin of sterile worker castes, resulting in eusociality, represents one of the major evolutionary transitions in the history of life. Understanding how eusociality has evolved is therefore an important issue for understanding life on earth. Here we
Leys, Remko   +2 more
core   +4 more sources

Az év vadvirága 2014-ben: a szibériai nőszirom (Iris sibirica L.) = The Wildflower of the Year 2014 in Hungary: Siberian flag (Iris sibirica L.) [PDF]

open access: yes, 2015
– In this paper a review of the nomenclature, etymology, taxonomy, morphology, histology, life cycle, phenology, reproduction, habitat preference, biotic interactions, biologically active compounds, micropropagation, application possibilities and ...
Molnár V., Attila   +3 more
core   +1 more source

What do we know about Neotropical trap‑nesting bees? Synopsis about their nest biology and taxonomy [PDF]

open access: yes, 2019
Cavity-nesting bees are enigmatic because they are difficult to observe in the wild, hence trap-nests (man-made cavities) provide the means by which these bees may be studied.
Costa, Camila Cristina Ferreira da   +1 more
core   +3 more sources

Un ginandromorfo de Xylocopa nigrocincta Smith (Hymenoptera: Apidae) [PDF]

open access: yes, 2009
We describe a mixed gynandromorph of Xylocopa (Neoxylocopa) nigrocincta from a single specimen from Argentina. The specimen presents bilateral asymmetry, with the right half of its head displaying male characters and the left half displaying female ...
Abrahamovich, Alberto Horacio   +2 more
core  

Prevalent bee venom genes evolved before the aculeate stinger and eusociality. [PDF]

open access: yesBMC Biol, 2023
Koludarov I   +17 more
europepmc   +1 more source

Heat resistance variability in the Lebanese bee fauna [PDF]

open access: yes
peer reviewedWild bees are facing many environmental challenges that are reshaping their distributions and even causing extinctions. One of the common threats is climate change leading to a higher frequency of extreme climatic events such as heat waves ...
Boustani, Mira   +4 more
core   +1 more source

Flower selection of Xylocopa violacea: aromatic and ornamental plants as resources in a botanic garden [PDF]

open access: yes, 2019
We assessed the interactions between aromatic and ornamentals plants and local pollinators in a botanic garden. We focused our attention on a frequent solitary bee, Xylocopa violacea, that thanks to its large size and its feeding preferences can visit ...
C. Giuliani   +6 more
core  

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