Some Quantitative Aspects of Insect Attraction

1966 ◽  
Vol 98 (10) ◽  
pp. 1114-1117 ◽  
Author(s):  
R. H. Wright
Keyword(s):  
Food Odor ◽  
Insect Attraction ◽  
Attractant Concentration

AbstractThe measurement of insect attraction by the number of specimens collected in a certain time, or by the duration of the attractive effect, does not distinguish between the roles of intrinsic attraction and the attractant concentration. It is shown that the number of D. melanogaster responding to a food odor is proportional to the logarithm of the attractant concentration, in conformity with the Weber–Fechner Law. The implications of this result are discussed.

scholarly journals Ghrelin Enhances Food Odor Conditioning in Healthy Humans: An fMRI Study

Cell Reports ◽  
2018 ◽  
Vol 25 (10) ◽  
pp. 2643-2652.e4 ◽  
Author(s):  
Jung Eun Han ◽  
Johannes Frasnelli ◽  
Yashar Zeighami ◽  
Kevin Larcher ◽  
Julie Boyle ◽  
...  
Keyword(s):  
Food Odor ◽  
Healthy Humans ◽  
Fmri Study ◽  
Odor Conditioning

scholarly journals Eficiência da Armadilha “R. Bianco” para Captura do Percevejo Leptoglossus zonatus Dallas (Hemiptera: Coreidae), na Cultura do Milho

2016 ◽  
Vol 9 (2) ◽  
pp. 84-88 ◽  
Author(s):  
Marliton Rocha Barreto ◽  
Ledonir Geovani Da Silva
Keyword(s):  
Attraction Effect ◽  
Monitoring And Control ◽  
The Third ◽  
Important Pest ◽  
Volume Production ◽  
Insect Attraction ◽  
And Control

Resumo. O milho é o cereal com maior índice de consumo, tanto industrializado como in natura, atualmente. É o grão com maior volume de produção, sendo o Brasil o terceiro maior produtor, dessa maneira, faz-se necessário uma atenção especial voltada ao monitoramento e controle de certos invasores que comprometem sua produtividade. Dentre as pragas que podem afetar essa produtividade destacamos os percevejos (Hemiptera: Heteroptera), mais especificamente o percevejo-do-milho (Leptoglossus zonatus Dallas), que tem se mostrado uma importante praga para a cultura do milho. O presente trabalho teve por objetivo avaliar a eficiência de armadilhas caseiras do tipo “R. Bianco” na captura desse percevejo. Os experimentos foram conduzidos no Sitio Nossa Senhora Aparecida, localizado no município de Sinop, MT. As armadilhas foram divididas em 10 abertas e 10 fechadas e avaliadas com e sem isca por 20 dias. O delineamento utilizado foi o inteiramente casualizado (DIC) em esquema fatorial 2x2x2 com oito tratamentos e cinco repetições. As armadilhas sem iscas demonstraram maior eficiência, apresentando média superior na captura do percevejo em relação às armadilhas com isca. As armadilhas fechadas, em comparação com as abertas, demonstraram maior eficácia na retenção do inseto. O efeito da borda foi pouco representativo nesse experimento. Portanto, a presença da isca não influenciou na atração do inseto e os tratamentos submetidos ao teste sem isca apresentaram maiores quantidades e maior eficiência na captura de insetos. Levando a crer o efeito de atração do sal pelo percevejo e a localização de cada armadilha pouco influenciou na captura dos insetos.Trap Efficiency “R. Bianco” for Capture the insect Leptoglossus zonatus Dallas (Hemiptera: Coreidae) in Maize CropAbstract. Maize is the cereal with the highest consumption in both industrialized as fresh nowadays. It is the grain with higher volume production, Brazil is the third largest producer, need special attention focused on the monitoring and control of invaders who risk their productivity. Among the pests that can affect the productivity highlight the insects (Hemiptera: Heteroptera), more specifically the bedbugs corn (Leptoglossus zonatus Dallas), which has been an important pest for corn crops. Thus, this study aimed to evaluate the effectiveness of homemade traps R. Bianco in control of this insect. The experiments were conducted in Sitio Nossa Senhora Aparecida, in the municipality of Sinop, MT. Traps were divided into 10 open and 10 closed which were evaluated with and without baits by 20 days. The design was completely randomized (DIC) in a 2x2x2 factorial with eight treatments and five repetitions. Traps without baits showed greater efficiency, with an average higher in catching the bugs regarding the traps with bait. The trap closed as compared with the open, demonstrated greater efficacy in retaining the insect. The effect of edge was little representative in this experiment. Therefore, the presence of bait did not influence the insect attraction and treatments submitted to the bait without test showed higher quantities and more efficient insect capture. Leading us to believe the attraction effect of salt by bedbug and the location of each trap had little influence in the capture of insects.

Primary Odors and Insect Attraction

1966 ◽  
Vol 98 (10) ◽  
pp. 1083-1093 ◽  
Author(s):  
R. H. Wright
Keyword(s):  
Statistical Analysis ◽  
Absorption Spectra ◽  
Infrared Absorption ◽  
Direct Evidence ◽  
Far Infrared ◽  
Vibrational Frequencies ◽  
Insect Attractants ◽  
Single Substance ◽  
Insect Attraction ◽  
Infrared Absorption Spectra

AbstractA statistical analysis of U.S.DA. studies of insect attractants provides the first direct evidence for the reality of "primary" odors (heretofore inferred indirectly from abstract principles). Molecules of a single substance may carry more than one primary osmic character and the presence of one does not preclude another, but some primaries may overlap others. Thus the molecular qualities responsible for osmic properties appear to be distributed along a continuum. Molecular vibrational frequencies are so distributed, and the far infrared absorption spectra of some attractant and non-attractant substances show correlations of the sort predicted by the theory.

scholarly journals Food and Food-Odor Preferences in Dogs: A Pilot Study

2017 ◽  
Vol 42 (4) ◽  
pp. 361-370 ◽  
Author(s):  
Nathaniel J. Hall ◽  
Franck Péron ◽  
Stéphanie Cambou ◽  
Laurence Callejon ◽  
Clive D.L. Wynne
Keyword(s):  
Pilot Study ◽  
Food Odor ◽  
Odor Preferences

scholarly journals Chemical signaling and insect attraction is a conserved trait in yeasts

2018 ◽  
Vol 8 (5) ◽  
pp. 2962-2974 ◽  
Author(s):  
Paul G. Becher ◽  
Arne Hagman ◽  
Vasiliki Verschut ◽  
Amrita Chakraborty ◽  
Elżbieta Rozpędowska ◽  
...  
Keyword(s):  
Chemical Signaling ◽  
Insect Attraction

Influence of Clothing on Decomposition and Presence of Insects on Rabbit Carcasses

2019 ◽  
Vol 56 (4) ◽  
pp. 921-926 ◽  
Author(s):  
Ashraf M Mashaly ◽  
Ahmed Mahmoud ◽  
Hossam Ebaid
Keyword(s):  
Oryctolagus Cuniculus ◽  
Dominant Species ◽  
Abundant Species ◽  
Decay Process ◽  
Decomposition Process ◽  
Dermestes Maculatus ◽  
Number Of Factors ◽  
Insect Attraction ◽  
Decomposition Stages ◽  
Insect Activity

Abstract The decomposition rate and insects attraction to carcasses are affected by a number of factors such as temperature, body mass, the presence of poisons, humidity, and insect activity. The present study was planned to investigate the influence of clothing on both the decomposition process and the presence of insects on rabbit carcasses. The study was performed in May 2016 and involved the use of 18 live mature rabbits (Oryctolagus cuniculus L.), which were euthanized by chloroform. Rabbit carcasses were divided into three replicates with six rabbits in each replicate. Rabbits in each replicate were further subdivided, so that three rabbits were wrapped with cloth, whereas the remaining three were left unclothed. Both clothed and unclothed carcasses reached the dry stage within 6 d. The results of this study showed that clothes neither affect the decomposition process nor the presence of insects (flies and beetles). The pattern of flies and beetles, however, did vary significantly in the different decomposition stages. In total, 2,849 insects, including 2,459 flies and 390 beetles, were collected and sorted during the decomposition process. Among the dominant species, flies were assigned to the families Calliphoridae and Muscidae, whereas beetles were assigned to the families Dermestidae and Histeridae. Lucilia sericata Meigen, Musca domestica L., Dermestes maculatus DeGeer, and Saprinus moyses Marseul were the most abundant species occurring on both the clothed and unclothed carcasses. In conclusion, this study emphasized that, the clothes have no effect when dealing with decay process and insect attraction to the carrions.

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