Results 81 to 90 of about 1,676 (191)

Optimal phenotypic plasticity in a stochastic environment minimizes the cost/benefit ratio [PDF]

open access: yes, 2012
This paper addresses the question of optimal phenotypic plasticity as a response to environmental fluctuations while optimizing the cost/benefit ratio, where the cost is energetic expense of plasticity, and benefit is fitness.
Coquillard, Patrick   +2 more
core   +4 more sources

Influence of Wolbachia on host gene expression in an obligatory symbiosis

open access: yesBMC Microbiology, 2012
Background Wolbachia are intracellular bacteria known to be facultative reproductive parasites of numerous arthropod hosts. Apart from these reproductive manipulations, recent findings indicate that Wolbachia may also modify the host’s physiology ...
Kremer Natacha   +6 more
doaj   +1 more source

The Role of Lipid Competition for Endosymbiont-Mediated Protection against Parasitoid Wasps in Drosophila

open access: yesmBio, 2016
Insects commonly harbor facultative bacterial endosymbionts, such as Wolbachia and Spiroplasma species, that are vertically transmitted from mothers to their offspring.
Juan C. Paredes   +3 more
doaj   +1 more source

Heimische Drosophila Parasitoide für die natürliche Regulierung der Kirschessigfliege, Drosophila suzukii M., einem invasiven Schaderreger im ökologischen Obstanbau [PDF]

open access: yes, 2017
The invasive fruit pest Drosophila suzukii from Asia currently spreads in Germany without being regulated by adapted specific natural enemies. Due to its polyphagous nature, D.
Englert, C, Herz, Annette
core  

Y a-t-il élimination d'Eupelmus orientalis Crawford par Eupelmus vuilleti Crawford (Hymenoptera : Eupelmidae) des systèmes de stockage du niébé (Vigna unguiculata Walp) ? [PDF]

open access: yes, 2007
Niébé is a food leguminous plant cultivated in tropical Africa for its seeds rich in proteins. The main problem setted by its production is the conservation of harvests. In the fields as in the stocks, the seeds are destroyed by pests (bruchids).
Ndoutoume-Ndong, Auguste   +1 more
core   +1 more source

Relações interespecíficas entre parasitoides nativos de moscas-das-frutas e o braconídeo exótico Diachasmimorpha longicaudata em frutos de 'umbu-cajá' Interespecific relations between native parasitoids of fruit flies and exotic braconid Diachasmimorpha longicaudata in fruits of 'umbu-cajá'

open access: yesCiência Rural, 2010
Espécies de vespas parasitoides (Hymenoptera: Braconidae) são importantes agentes de controle biológico de moscas-das-frutas (Diptera: Tephritidae).
Zuzinaide Vidal Bomfim   +2 more
doaj  

Mosca-da-carambola. [PDF]

open access: yes, 2017
Mosca-da-carambola. Características. Hospedeiros. Inimigos naturais. Danos.
JESUS, C. R. de, SILVA, R. A. da
core  

Biology of Aphaereta sp. n (Hymenoptera: Braconidae: Alysiinae), a new larval parasitoid of Ceratitis capitata Wied. (Diptera: Tephritidae) [PDF]

open access: yes, 2011
Dissertação de Mestrado - Biotecnologia em Controlo Biológico.As espécies que pertencem ao género Aphaereta estão distribuídas praticamente por todo o mundo, e vivem associadas a dípteros sinantrópicos e outros dípteros.
Teixeira, Tânia Isabel Peres
core  

Environmental regulation of animal development [PDF]

open access: yes, 2011
Iako su biolozi nekada smatrali da okoliš nema velik utjecaj na razvoj životinja, danas znamo da to nije tako. U ovom radu kroz kratki pregled prikazano je da okoliš ne igra samo sporednu ulogu u razvoju životinja, nego je često i jedna od ključnih ...
Skoko, Josip
core   +2 more sources

Comparative assessment of phytochemical properties of ethanolic extracts of barks of two herbal trees [PDF]

open access: yes, 2018
This study serves to explore the chemical constituents of Azadirachta indica and Mangifera indica as a possible alternative sources of conventional antibiotics.
Adewale, Shamsideen   +2 more
core  

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