Results 101 to 110 of about 6,054 (217)

Importance of olfactory and visuel cues of Echium for host-plant finding of the oligolectic bee Osmia adunca (Megachilidae) [PDF]

open access: yes, 2008
Solitary bees are important pollinators of flowers. Besides nectar they collect pollen at flowers mainly to provide their larvae with food. Many bee species collect pollen only on a few closely related plant species (oligolecty) (Müller & al.
Ayasse, Manfred   +2 more
core  

Complementary insights from transect observations and palynological analyses on Andrena and Lasioglossum foraging in field margins

open access: yesJournal of Pollination Ecology
Field margins support wild bees by providing richer floral resources than most crops. While transect-based hand netting offers insight into bee–plant interactions, it underrepresents the full range of each bee’s foraging activity.
Manuela Giovanetti   +8 more
doaj   +1 more source

A változó mezőgazdaság hatása termesztett növényeink természetes megporzó rovarnépességeire = Impact of changing agriculture on the native pollinating insect assemblages of cultivated crop plants [PDF]

open access: yes, 2008
Négy egymás utáni évben a lucerna, vöröshere, bükköny, napraforgó, vöröshagyma és gyümölcsfajok (alma, meggy) megporzó rovarnépességeit vizsgáltuk. Lucernásokban 113 vadméh fajt mutattunk ki. A lucernások Apoidea megporzó népessége átstrukturálódott.
Benedek, Pál   +5 more
core  

Gerinctelen taxanokon belül előforduló agrobiont fajok ökológiai karakterének vizsgálata agrár és természetes élőhelyeken = Studies into the ecological characters of agrobiont invertebrates in their agricultural and natural habitats [PDF]

open access: yes, 2009
A mezőgazdasági közösségek szerveződésének tanulmányozásával remélhetjük, hogy e közösségekben az egyensúlyt a környezetet károsító behatások nélkül is minél inkább a hasznos szervezetek javára tolhatjuk el.
Jenser, Gábor   +5 more
core  

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

The genome sequence of the big-headed mining bee, Andrena bucephala (Stephens, 1846) [version 1; peer review: 2 approved]

open access: yesWellcome Open Research
We present a genome assembly from an individual female Andrena bucephala (the Big-headed Mining Bee; Arthropoda; Insecta; Hymenoptera; Andrenidae). The genome sequence is 379.8 megabases in span.
Liam M. Crowley
doaj   +1 more source

Förderung von Wildbienen in Heidelbeerkulturanlagen [PDF]

open access: yes, 2010
In der heutigen Zeit ist Bestäubung nicht immer garantiert. Die Vielfalt an Bienen ist während der letzten Jahre signifikant zurückgegangen. Die Anstrengungen zum Erhalt der Blütenbestäuber müssen fortgeführt werden. Dies gilt insbesondere für diejenigen,
Boecking, Otto, Kubersky, Ulrike
core  

Ophrys × serrae (Orchidaceae), nuevo híbrido de la Comunidad Valenciana [PDF]

open access: yes, 2015
Se describe un nuevo híbrido dentro del género Ophrys, concretamente el generado tras el cruce entre O. lucentina y O. lutea. También se comentan algunos aspectos relacionados con la nomenclatura del primero de los parentales.A new hybrid, Ophrys ...
Benito Ayuso, Javier
core  

In-field monitoring of ground-nesting insect aggregations using a scaleable multi-camera system

open access: yesEcological Informatics
Insects provide essential ecosystem services, but are threatened by multiple anthropogenic stressors. Observing insect populations and behaviour is crucial to gain a better understanding of species’ interactions, and their responses to different ...
Daniela Calvus   +5 more
doaj   +1 more source

Aspetos morfológicos dos insetos e sua importância na polinização [PDF]

open access: yes, 2015
A maioria das plantas com flor é visitada por grande diversidade de insetos com diferentes formas e tamanhos, que acumulam grãos de pólen nos seus corpos.
Cerqueira, Sandro Melo
core  

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