Diel changes in adult mosquito microhabitat temperatures and their relationship to the extrinsic incubation of arboviruses in mosquitoes in Kern County, California.

R. P. Meyer, J. L. Hardy, William Reisen

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Microhabitat temperatures experienced by nocturnally active Culex tarsalis Coquillett mosquitoes were measured in the southern San Joaquin Valley of California. Temperatures of the diurnal resting shelter and nocturnal activity air space were measured by digital recorder at three Cx. tarsalis habitats in Kern County. Temperatures measured by digital recorders agreed well with temperatures recorded concurrently at nearby California Irrigation Management and Inspection System weather stations. Monthly temperatures among habitats were combined to depict the diel temperature regimen experienced by female Cx. tarsalis as a consequence of daily movement between the diurnal resting shelter and nocturnal air space. Transitions between the two microhabitats corresponded to the times of mosquito ingress and egress (i.e., sunrise and sunset). The composite daily temperature mean ranged from 7.4 degrees C in December to 21.5 degrees C in July, and temperature extremes seldom exceeded a daily maximum of 25.0 degrees C during the summer or dropped below a daily minimum of 5.0 degrees C during the winter. Overall, mosquitoes occupied a composite thermal environment where the extrinsic incubation of an arbovirus would have occurred at ambient temperatures that were cooler than either the diurnal resting shelter or activity air space.

Original languageEnglish (US)
Pages (from-to)607-614
Number of pages8
JournalJournal of Medical Entomology
Volume27
Issue number4
DOIs
StatePublished - Jan 1 1990
Externally publishedYes

Fingerprint

Arboviruses
arboviruses
Culicidae
microhabitats
Temperature
temperature
Air
air
Ecosystem
Culex tarsalis
nocturnal activity
weather stations
Culex
habitats
coolers
irrigation management
Weather
ambient temperature
valleys
Hot Temperature

ASJC Scopus subject areas

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

Cite this

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abstract = "Microhabitat temperatures experienced by nocturnally active Culex tarsalis Coquillett mosquitoes were measured in the southern San Joaquin Valley of California. Temperatures of the diurnal resting shelter and nocturnal activity air space were measured by digital recorder at three Cx. tarsalis habitats in Kern County. Temperatures measured by digital recorders agreed well with temperatures recorded concurrently at nearby California Irrigation Management and Inspection System weather stations. Monthly temperatures among habitats were combined to depict the diel temperature regimen experienced by female Cx. tarsalis as a consequence of daily movement between the diurnal resting shelter and nocturnal air space. Transitions between the two microhabitats corresponded to the times of mosquito ingress and egress (i.e., sunrise and sunset). The composite daily temperature mean ranged from 7.4 degrees C in December to 21.5 degrees C in July, and temperature extremes seldom exceeded a daily maximum of 25.0 degrees C during the summer or dropped below a daily minimum of 5.0 degrees C during the winter. Overall, mosquitoes occupied a composite thermal environment where the extrinsic incubation of an arbovirus would have occurred at ambient temperatures that were cooler than either the diurnal resting shelter or activity air space.",
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