Late-instar Behavior of Aedes aegypti (Diptera: Culicidae) Larvae in Different Thermal and Nutritive Environments.
J Med Entomol
; 52(5): 789-96, 2015 Sep.
Article
em En
| MEDLINE
| ID: mdl-26336228
ABSTRACT
The effects of temperature on ectotherm growth have been well documented. How temperature affects foraging behavior is less well explored, and has not been studied in larval mosquitoes. We hypothesized that temperature changes foraging behavior in the aquatic larval phase of the mosquito, Aedes aegypti L. Based on empirical results in other systems, we predicted that foraging effort would increase at higher temperatures in these insects. We tested this prediction over three temperature conditions at two food levels. We measured behaviors by video recording replicated cohorts of fourth-instar mosquitoes and assessing individual behavior and time budgets using an ethogram. We found both food level and temperature had significant impacts on larval foraging behavior, with more time spent actively foraging at low food levels and at low temperatures, and more occurrences of active foraging at both temperature extremes. These results are contrary to some of our predictions, but fit into theoretical responses to temperature based upon dynamic energy budget models.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Aedes
/
Meio Ambiente
/
Comportamento Alimentar
Tipo de estudo:
Prognostic_studies
Limite:
Animals
País como assunto:
America do norte
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article