Results 111 to 120 of about 1,970 (204)
Caldasia, 2000 Una colonia mixta se forma cuando un nido es ocupado por más de una especie (Michener 1974). En Bombus, este tipo de colonias son muy comunes de manera natural; la reina de una especie invade el nido de otra, mata a la reina hospedera y pone sus propias ...
González B. Victor Hugo +1 more
doaj
Centris bicornuta and Epicharis albofasciata. [PDF]
, 2017 20 pages : illustrations ; 26 cm.This paper presents detailed comparative descriptions of the mature larvae and eggs of Centris (Heterocentris) bicornuta Mocsáry and Epicharis (Epicharoides) albofasciata Smith as representatives of two genera that are ...
Rozen, Jerome G., Jr. (Jerome George), 1928-
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Bacterial Communities in Central European Bumblebees: Low Diversity and High Specificity [PDF]
, 2018 Recent studies on the microbial flora of the honeybee gut have revealed an apparently highly specific community of resident bacteria that might play a role in immune defence and food preservation for their hosts. However, at present, very little is known
Koch, Hauke, Schmid-Hempel, Paul
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SociobiologyThe first case of gynandromorphism in the orchid bee Euglossa viridissima Friese is described and illustrated. A specimen collected in Popotlán, El Salvador, using an aromatic (eugenol) bait trap, exhibits a marked bilateral gynandromorphic pattern and ...
Francisco Javier Castaneda Lúe +5 more
doaj +1 more source
MITOCHONDRIAL OXIDATIVE CAPACITIES: Does functional capacity match maximum physiological demand? [PDF]
, 2014 The oxygen-dependent processes of ATP synthesis in mitochondria is same in all mammals and birds (endothermic animals). However, some endothermic species have higher maximum O2 consumption rate per unit mass (VO2 max/Mb) than others during aerobic ...
Abney, Masako
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Wege der Mikroevolution und Artbildung bei Bienen (Apoidea, Hymenoptera): Populationsgenetische und empirische Aspekte [PDF]
, 2007 Bees are haplodiploid organisms: haploid males develop from unfertilized eggs, diploid females from fertilized eggs. Under haplodiploidy, deleterious mutations are effectively purged by purifying selection on haploid males.
Mazzucco, K., Mazzucco, R.
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Biota Colombiana, 2002 Para todas las especies de abejas euglossinas damos la distribución geográfica (por países y altura) y los sexos que hasta ahora se conocen; también proveemos los sinónimos taxonómicos para cada taxón.
Santiago Ramírez +2 more
doaj +2 more sources
Diversidade de abelhas (Hymenoptera: Apoidea) em inflorescências de Piper hispidinervum (C.DC.). [PDF]
, 2019 Este trabalho teve como objetivos determinar as principais espécies de abelhas visitantes de inflorescências de pimenta longa, Piper hispidinervum (C.DC.), sua abundância e freqüência relativas.
THOMAZINI, A. P. de B. W. +1 more
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New species of bees in the genera Euplusia and Eufriesia. (Hymenoptera: Apidae, Euglossini)
, 1977 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +1 more source
Coryanthes macrantha (Orchidaceae: Stanhopeinae) and their floral and extrafloral secretory structures: an anatomical and phytochemical approach. [PDF]
AoB Plants, 2022 Casique JV +5 more
europepmc +1 more source