scholarly journals Migration and behavioral studies of two adult noctuid (Lepidoptera: Noctuidae) species plus feeding observations of some moths common to Iowa

1990 ◽  
Author(s):  
William Hurston Hendrix
Keyword(s):  
Behavioral Studies ◽  
Lepidoptera Noctuidae ◽  
Feeding Observations

Focusing of Visuospatial Attention

2001 ◽  
Vol 15 (4) ◽  
pp. 256-274 ◽  
Author(s):  
Caterina Pesce ◽  
Rainer Bösel
Keyword(s):  
Reaction Times ◽  
Visual Space ◽  
Spatial Relation ◽  
Stimulus Onset ◽  
Visuospatial Attention ◽  
Task Demands ◽  
Time Interval ◽  
Behavioral Studies ◽  
Task Conditions ◽  
Simple Rt

Abstract In the present study we explored the focusing of visuospatial attention in subjects practicing and not practicing activities with high attentional demands. Similar to the studies of Castiello and Umiltà (e. g., 1990) , our experimental procedure was a variation of Posner's (1980) basic paradigm for exploring covert orienting of visuospatial attention. In a simple RT-task, a peripheral cue of varying size was presented unilaterally or bilaterally from a central fixation point and followed by a target at different stimulus-onset-asynchronies (SOAs). The target could occur validly inside the cue or invalidly outside the cue with varying spatial relation to its boundary. Event-related brain potentials (ERPs) and reaction times (RTs) were recorded to target stimuli under the different task conditions. RT and ERP findings showed converging aspects as well as dissociations. Electrophysiological results revealed an amplitude modulation of the ERPs in the early and late Nd time interval at both anterior and posterior scalp sites, which seems to be related to the effects of peripheral informative cues as well as to the attentional expertise. Results were: (1) shorter latency effects confirm the positive-going amplitude enhancement elicited by unilateral peripheral cues and strengthen the criticism against the neutrality of spatially nonpredictive peripheral cueing of all possible target locations which is often presumed in behavioral studies. (2) Longer latency effects show that subjects with attentional expertise modulate the distribution of the attentional resources in the visual space differently than nonexperienced subjects. Skilled practice may lead to minimizing attentional costs by automatizing the use of a span of attention that is adapted to the most frequent task demands and endogenously increases the allocation of resources to cope with less usual attending conditions.

Preferência alimentar de Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) por cultivares de soja

Científica ◽  
2014 ◽  
Vol 42 (1) ◽  
Author(s):  
Aline Aparecida Franco ◽  
Maíra Dos Santos Queiroz ◽  
Amanda Ribeiro Peres ◽  
Matheus Elache Rosa ◽  
Alcebíades Ribeiro Campos ◽  
...  
Keyword(s):  
Anticarsia Gemmatalis ◽  
Lepidoptera Noctuidae

Olfactory responses and feeding preferences of Copitarsia uncilata (Lepidoptera: Noctuidae) to four aromatic herb specie

2017 ◽  
Vol 43 (2) ◽  
pp. 179
Author(s):  
Miguel Mendieta ◽  
Andreas Gaigl ◽  
Juan Carlos Getiva de la Hoz ◽  
Anibal Orlando Herrera
Keyword(s):  
Host Plant ◽  
Feeding Preferences ◽  
Larval Weight ◽  
Olfactory Responses ◽  
Host Selection Behavior ◽  
Selection Behavior ◽  
Larva Feeding ◽  
Plant Choice ◽  
Lepidoptera Noctuidae ◽  
Aromatic Herbs

Colombian aromatic herbs have great potential as an export commodity. The genus Copitarsia is considered as an economic and a quarantine pest attacking them. In herbivore insects, host plant choice is made by adults and influenced by host plant quality. There were performed olfactory and feeding tests by using four-arm olfactometer and offering four different aromatic herbs (basil, mint, rosemary, or thyme) to determine the host selection behavior of Copitarsia uncilata Burgos and Leiva. Parameters, such as adult choice, larval weight, and time spent by larva on particular herb were measured. The preferences of adults and immature of C. uncilata varied significantly among the herbs in olfactory and larva feeding tests. The adults showed significantly higher responses to essential oils of basil and rosemary. Higher weight of larva was recorded on mint and basil. Further studies on larval development and longevity of adults on different herbs are necessary.

Sign in / Sign up

Export Citation Format

Share Document