Results 101 to 110 of about 31,227 (221)
European Journal of Entomology, 2018 Brazilian native meliponines are currently threatened by increased human impacts. The assessment of their genetic variation by microsatellite DNA markers can assist in the conservation of populations and help in the planning and establishment of ...
Geice Ribeiro Da SILVA +6 more
doaj +1 more source
Queen control of a key life-history event in a eusocial insect [PDF]
, 2013 In eusocial insects, inclusive fitness theory predicts potential queen–worker conflict over the timing of events in colony life history. Whether queens or workers control the timing of these events is poorly understood.
Andrew F. G. Bourke +5 more
core +1 more source
Daño colateral en abejas por la exposición a pesticidas de uso agrícola
Entramado, 2018 El uso de pesticidas es una práctica común en la industria agrícola para erradicar plagas. El objetivo de esta revisión fue documentar el efec to de los pesticidas en la relación ecológica de las abejas con el medio ambiente y los sistemas de producción ...
Nazly Yolieth Martin-Culma +1 more
doaj +1 more source
The bumble bees (Hymenoptera: Apidae: Bombus) of Arkansas, fifty years later [PDF]
, 2015 Many species of bumble bees (Hymenoptera: Apidae: Bombus Latreille) are declining throughout their ranges in North America, yet detecting population trends can be difficult when historical survey data are lacking. In the present study, contemporary data
Szalanski, Allen L., Tripodi, Amber D.
core +2 more sources
Biotemas, 2010 Este trabalho teve como objetivo principal a determinação dos visitantes florais e potenciais polinizadores de Aechmea constantinii (Mez) L. B. Sm., uma bromélia endêmica da Mata Atlântica do Nordeste Oriental do Brasil.
Petrúcio Alexandre Fonseca Rios +2 more
doaj +1 more source
Forager bees (Apis mellifera) highly express immune and detoxification genes in tissues associated with nectar processing. [PDF]
, 2015 Pollinators, including honey bees, routinely encounter potentially harmful microorganisms and phytochemicals during foraging. However, the mechanisms by which honey bees manage these potential threats are poorly understood.
Johnson, Brian R +2 more
core +1 more source
Suction feeding in orchid bees (Apidae: Euglossini) [PDF]
Proceedings of the Royal Society of London. Series B: Biological Sciences, 2004 Energy flux during nectar feeding is maximized at an intermediate sugar concentration, the value of which depends on the morphology of the feeding apparatus and the modality of fluid feeding. Biomechanical models predict that a shift from capillary-based lapping to suction feeding will lead to a decrease in this optimal sugar concentration.
openaire +3 more sources
A Local Replacement of \u3ci\u3eBombus Ternarius\u3c/i\u3e by \u3ci\u3eBombus Terricola\u3c/i\u3e in Northern Wisconsin (Hymenoptera: Apidae) [PDF]
, 2017 During the last few years, the bumblebee Bombus ternarius Say has markedly decreased in numbers in Vilas County in northern Wisconsin while Bombus terricola Kirby has increased. The great ecological similarity of these species suggests that interspecific
Thomson, James D
core +2 more sources
Heterospecific Hymenoptera found inside the nests of Bombus impatiens (Hymenoptera: Apidae). [PDF]
, 2018 The nests of social Hymenoptera are particularly attractive to species engaging in resource robbing due to their concentration of resources. Here, the identity of heterospecific intruders in Bombus impatiens nests are described, with a particular focus ...
Graham, Kelsey K
core +2 more sources
Oviposition behavior of Plutella xylostella onto cabbages covered with nets [PDF]
, 2011 Plusieurs expérimentations de terrains menées en zone tropicale en Afrique et en Asie ont montré l'efficacité des filets anti-insectes pour protéger les cultures de choux contre les Lépidoptères en particulier Plutella xylostella.
Coffi, Hubert Kacou +3 more
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