Mosquito larvae change their feeding behavior in response to kairomones from some predators

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

ABSTRACT The efficacy of using predators for the biological control of mosquito disease vectors will be reduced if mosquito larvae respond to predator presence. The larvae of two mosquito species were investigated to study whether they responded to predator kairomones by increasing surface filter-feeding, which is a less active and thus less risky feeding strategy than bottom feeding. Culex quinquefasciatus Say is normally found in highly polluted water, where it will have little contact with predators. Except for some third instars, its larvae showed no response to four different types of predators. Culiseta longiareolata Macquart, living in rain-filled rock pools, is frequently attacked by a range of predators. All instars tested (second, third, and fourth instars) strongly responded to chemicals from dragonfly nymphs (Crocothemis erythraea Brullé), damselfly nymphs (Ischnura evansi Morton), and the fish Aphanius dispar Ruppel. However, they did not respond to final-instar water scorpions (Nepa cinerea L.), which would not feed on the mosquito larvae. Second- and third-instar Cs. longiareolata produced the same response to chopped up mosquito larvae as they did to dragonfly nymphs, but fourth instars produced a significantly stronger response to dragonfly nymphs-both those unfed and those fed in situ. Thus, Cs. longiareolata not only identified different predators and responded accordingly, but also responded to conspecific alarm pheromones. Cx quinquefasciatus showed little response to predators or to alarm pheromones from damaged conspecific larvae.

Original languageEnglish
Pages (from-to)368-374
Number of pages7
JournalJournal of Medical Entomology
Volume51
Issue number2
DOIs
Publication statusPublished - Mar 2014

Fingerprint

kairomones
Pheromones
Feeding Behavior
Culicidae
Odonata
feeding behavior
Larva
insect larvae
Nymph
predators
instars
nymphs
Anisoptera (Odonata)
alarm pheromones
Nepa
Scorpions
Disease Vectors
larvae
Aphanius dispar
Culex

Keywords

  • Culex quinquefasciatus
  • Culiseta longiareolata
  • Filter feeding
  • Mosquito larvae
  • Predator avoidance

ASJC Scopus subject areas

  • Insect Science
  • veterinary(all)
  • Infectious Diseases
  • Parasitology

Cite this

Mosquito larvae change their feeding behavior in response to kairomones from some predators. / Roberts, Derek.

In: Journal of Medical Entomology, Vol. 51, No. 2, 03.2014, p. 368-374.

Research output: Contribution to journalArticle

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