Ecology of mosquitoes and lack of arbovirus activity at Morro Bay, San Luis Obispo County, California

William Reisen, J. L. Hardy, R. E. Chiles, L. D. Kramer, V. M. Martinez, S. B. Presser

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

During 1994-95, totals of 17,656 adult females and 111,104 adults reared from field-collected immatures comprising 19 species in 4 genera of mosquitoes were collected from Morro Bay estuary and surrounding environs in San Luis Obispo County, California. Aedes dorsalis was the dominant summer mosquito, whereas Aedes squamiger and Ae. washinoi were abundant during winter and early spring. Host-seeking Culex tarsalis were collected infrequently, even though immatures were collected frequently from freshwater surface pools. Overall, 13,561 adults (386 pools) and 91,547 adults reared from field-collected immatures (3,027 pools) were tested for arboviruses by plaque assay in Vero cell culture. Morro Bay virus, a member of the California serogroup, was isolated from 4 pools of Ae. squamiger reared from field-collected immatures (minimum field infection rate = 1.07 per 1,000), verifying the maintenance of this virus by vertical transmission. All remaining pools were negative. Three flocks of 10 sentinel chickens and one group of 5 sentinel rabbits were bled biweekly and tested for arbovirus antibodies with negative results. Neither horizontal nor vertical transmission of western equine encephalomyelitis virus was detected.

Original languageEnglish (US)
Pages (from-to)679-687
Number of pages9
JournalJournal of the American Mosquito Control Association
Volume12
Issue number4
StatePublished - Dec 1 1996

Fingerprint

Arboviruses
arboviruses
Aedes
Ecology
Culicidae
mosquito
Aedes squamiger
Western Equine Encephalitis Viruses
immatures
ecology
Viruses
vertical transmission
Estuaries
virus
Culex
Vero Cells
Fresh Water
Chickens
Aedes dorsalis
Cell Culture Techniques

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Public Health, Environmental and Occupational Health
  • Insect Science

Cite this

Ecology of mosquitoes and lack of arbovirus activity at Morro Bay, San Luis Obispo County, California. / Reisen, William; Hardy, J. L.; Chiles, R. E.; Kramer, L. D.; Martinez, V. M.; Presser, S. B.

In: Journal of the American Mosquito Control Association, Vol. 12, No. 4, 01.12.1996, p. 679-687.

Research output: Contribution to journalArticle

Reisen, William ; Hardy, J. L. ; Chiles, R. E. ; Kramer, L. D. ; Martinez, V. M. ; Presser, S. B. / Ecology of mosquitoes and lack of arbovirus activity at Morro Bay, San Luis Obispo County, California. In: Journal of the American Mosquito Control Association. 1996 ; Vol. 12, No. 4. pp. 679-687.
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