Results 111 to 120 of about 10,282 (227)

Comparison of odor detection thresholds for n-butanol and benzaldehyde determined with a dynamic dilution olfactometer and in room air

open access: yesIndoor Environments
The German Committee on Indoor Air Guide Values (AIR) has developed a concept of odor guide values (OGV) based on odor detection thresholds (ODT) to assess the plausibility of complaints about odor annoyance. ODT were determined directly at the nose with
Vanessa Thiele   +7 more
doaj   +1 more source

Anopheles darlingi (Diptera: Culicidae) displays increased attractiveness to infected individuals with Plasmodium vivax gametocytes

open access: yesParasites & Vectors, 2014
Background Most hematophagous insects use host odours as chemical cues. The odour components, some physiological parameters and host attractiveness are affected by several conditions, including infection by parasites, e.g., plasmodia and, therefore ...
Elis PA Batista   +2 more
doaj   +1 more source

Innate preference for host-odor blends modulates degree of anthropophagy of Anopheles gambiae sensu lato (Diptera: Culicidae) [PDF]

open access: yes
In field studies, Anopheles gambiae Giles sensu stricto obtains most blood meals from humans, whereas Anopheles quadriannulatus Theobald bites predominantly bovids. We investigated whether host odors modulate the host preference of these mosquito species.
Braks, M.A.H., Dekker, T., Takken, W.
core   +1 more source

Host Selection of the giant willow aphid (Tuberolachnus salignus) [PDF]

open access: yes, 2009
The giant willow aphid [Tuberolachnus salignus (Gmelin)] has recently become noteworthy as a potential pest species due to the increased uptake of willow, its host-plant, for use in growing biomass for energy production.
Aradottir, G   +7 more
core  

An investigation of honey bee Drone Congregation Area formation in rural and semi-rural locations in New Zealand : a thesis presented in part fulfilment of the requirement for the degree of Master of Science in Zoology at Massey University, Manawatū, New Zealand [PDF]

open access: yes, 2018
Male honey bees gather in Drone Congregation Areas (DCAs), and meet with queens to mate in flight. Because they mate on the wing, investigation of these areas using current techniques is not easily facilitated in some areas, which limits research.
Cramp, David Christopher
core  

Homing orientation in salamanders: A mechanism involving chemical cues [PDF]

open access: yes
A detailed description is given of experiments made to determine the senses and chemical cues used by salamanders for homing orientation. Sensory impairment and cue manipulative techniques were used in the investigation.
Madison, D. M.
core   +1 more source

Bactrocera Cucurbitae response to four Cymbopogon species essential oils [PDF]

open access: yes, 2016
GC/MS analysis of essential oils extracted from four Cymbopogon species revealed that the majors compounds were trans-p-mentha-1(7),8-dien-2-ol (21.9%), cis-p-mentha-1(7),8-den- 2-ol (19.4%), trans-p-mentha-2,8-dien-1-ol (9.6%), cis-p-mentha-2,8-dien-1 ...
Bothon, F.   +4 more
core  

The Development of The Odour Threshold Test for Environmental Odour Assessment [PDF]

open access: yes, 2015
Pengeluaran bau boleh menyebabkan gangguan yang serius kepada penduduk di sekitar kawasan tersebut. Di Malaysia, Olfaktometer digunakan untuk mengukur bau berdasarkan nilai kepekatan bau yang dihasilkan. Olfaktometer tersebut amat mahal dan memerlukan
Rosli, Ros Nadiah
core  

Host fruit odours as attractants for Bactrocera cucurbitae females [PDF]

open access: yes, 2014
Background: The Melon fly, Bactrocera cucurbitae (Diptera, Tephritidae), is one of the most i mportant pests attacking Cucurbitaceae crops i n tropical regions of the world such as Reunion Island.
Atiama-Nurbel, Toulassi   +8 more
core  

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