scholarly journals Pan trap color preference across Hymenoptera in a forest clearing

2020 ◽  
Author(s):  
Matthew L. Buffington ◽  
Alexis Garretson ◽  
Robert R. Kula ◽  
Michael W. Gates ◽  
Ryan Carpenter ◽  
...  
Keyword(s):  
Color Preference ◽  
Forest Clearing ◽  
Trap Color

scholarly journals Efficacy of Different Coloured Sticky Traps Against Thrips of Chilli

2020 ◽  
Vol 8 (2) ◽  
pp. 187-190
Author(s):  
M.M. Hossain ◽  
K.M. Khalequzzaman ◽  
M.S. Alam ◽  
M.T.R. Mondal ◽  
M.M. Islam
Keyword(s):  
Field Experiment ◽  
Sticky Trap ◽  
Color Preference ◽  
Research Centre ◽  
Mass Trapping ◽  
Blue Color ◽  
Rabi Season ◽  
Beneficial Insects ◽  
Scirtothrips Dorsalis ◽  
Trap Color

The field experiment was conducted at Spices Research Centre, Shibganj, Bogura, Bangladesh during Rabi season of 2017-18 to study the color preference of Scirtothrips dorsalis in chilli. The treatments were T1= Blue trap @40 trap/ha; T2= Yellow trap @40 trap/ha; T3= White trap @40 trap/ha; T4= Green trap @40 trap/ha and T5= Pink trap @40 trap/ha.  Among the color traps used, at 35 days after installation (DAI) of trap blue color attracted highest (8.44 thrips/ sq. inch area of trap) number of S. dorsalis adults followed by white (5.43 thrips/ sq. inch area of trap), yellow (4.30 thrips/ sq. inch area of trap), green (3.52 thrips/ sq. inch area of trap) and pink (3.40 thrips/ sq. inch area of trap) color. Blue coloured sticky trap also attracted comparatively a smaller number of beneficial insects and can be used for relative estimate of S. dorsalis population and also for monitoring and mass trapping as a component of IPM program. Int. J. Appl. Sci. Biotechnol. Vol 8(2): 187-190

Change of color appearance due to extremely high light level: corresponding colors under 100 and 3000 cd/m2

2019 ◽  
Vol 2019 (1) ◽  
pp. 320-325 ◽  
Author(s):  
Wenyu Bao ◽  
Minchen Wei
Keyword(s):  
Light Level ◽  
Limited Range ◽  
High Light ◽  
Color Preference ◽  
Color Appearance ◽  
Appearance Model ◽  
Color Matching ◽  
Light Levels ◽  
Appearance Models ◽  
Psychophysical Study

Great efforts have been made to develop color appearance models to predict color appearance of stimuli under various viewing conditions. CIECAM02, the most widely used color appearance model, and many other color appearance models were all developed based on corresponding color datasets, including LUTCHI data. Though the effect of adapting light level on color appearance, which is known as "Hunt Effect", is well known, most of the corresponding color datasets were collected within a limited range of light levels (i.e., below 700 cd/m2), which was much lower than that under daylight. A recent study investigating color preference of an artwork under various light levels from 20 to 15000 lx suggested that the existing color appearance models may not accurately characterize the color appearance of stimuli under extremely high light levels, based on the assumption that the same preference judgements were due to the same color appearance. This article reports a psychophysical study, which was designed to directly collect corresponding colors under two light levels— 100 and 3000 cd/m2 (i.e., ≈ 314 and 9420 lx). Human observers completed haploscopic color matching for four color stimuli (i.e., red, green, blue, and yellow) under the two light levels at 2700 or 6500 K. Though the Hunt Effect was supported by the results, CIECAM02 was found to have large errors under the extremely high light levels, especially when the CCT was low.

NOTE ON COLOR PREFERENCE AND COLOR VISION TEST PERFORMANCE

1989 ◽  
Vol 69 (3) ◽  
pp. 1039-1042 ◽  
Author(s):  
L. W. BUCKALEW ◽  
NANCY MAITS BUCKALEW ◽  
SHERMAN ROSS
Keyword(s):  
Color Vision ◽  
Test Performance ◽  
Color Preference ◽  
Color Vision Test

scholarly journals Complete genomes of two extinct New Zealand passerines show responses to climate fluctuations but no evidence for genomic erosion prior to extinction

2019 ◽  
Vol 15 (9) ◽  
pp. 20190491 ◽  
Author(s):  
Nicolas Dussex ◽  
Johanna von Seth ◽  
Michael Knapp ◽  
Olga Kardailsky ◽  
Bruce C. Robertson ◽  
...  
Keyword(s):  
Climate Change ◽  
New Zealand ◽  
Human Impacts ◽  
Oceanic Islands ◽  
Genomic Diversity ◽  
Climate Fluctuations ◽  
Forest Clearing ◽  
Mammalian Predators ◽  
Demographic Trajectories ◽  
Human Climate

Human intervention, pre-human climate change (or a combination of both), as well as genetic effects, contribute to species extinctions. While many species from oceanic islands have gone extinct due to direct human impacts, the effects of pre-human climate change and human settlement on the genomic diversity of insular species and the role that loss of genomic diversity played in their extinctions remains largely unexplored. To address this question, we sequenced whole genomes of two extinct New Zealand passerines, the huia ( Heteralocha acutirostris ) and South Island kōkako ( Callaeas cinereus ). Both species showed similar demographic trajectories throughout the Pleistocene. However, the South Island kōkako continued to decline after the last glaciation, while the huia experienced some recovery. Moreover, there was no indication of inbreeding resulting from recent mating among closely related individuals in either species. This latter result indicates that population fragmentation associated with forest clearing by Maōri may not have been strong enough to lead to an increase in inbreeding and exposure to genomic erosion. While genomic erosion may not have directly contributed to their extinctions, further habitat fragmentation and the introduction of mammalian predators by Europeans may have been an important driver of extinction in huia and South Island kōkako.

Cloth color preference under the influence of face cooling

1998 ◽  
Vol 23 (6) ◽  
pp. 335-340 ◽  
Author(s):  
Hee Sook Kim ◽  
Tokura Hiromi
Keyword(s):  
Color Preference ◽  
Face Cooling

scholarly journals Color preference shift in hungry and thirsty pigeons

1968 ◽  
Vol 13 (5) ◽  
pp. 273-274 ◽  
Author(s):  
Juan D. Delius
Keyword(s):  
Color Preference
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