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Seasonal abundance, biting cycle, parity and vector potential of the mosquito Haemagogus equinus in Trinidad.
Med Vet Entomol. 1993 Apr; 7(2):141-6.MV

Abstract

The mosquito Haemagogus equinus is a known vector of yellow fever (YF) in central America. Seasonal abundance, daily biting activity and the age composition of adult Hg.equinus female populations were monitored weekly during 1981-82 by human collectors on the ground at Point Gourde Forest, Chaguaramas, 16 km west of Port of Spain, Trinidad. 2. Landing collections of Hg.equinus showed diurnal activity from 06.00 to 20.00 hours (suntime), with a single peak between 08.00 and 14.00 hours. 3. Overall, 5.6% of Hg.equinus were collected during the dry season (December-April) and 94.4% during the wet season (May-November). 4. Mean density of Hg.equinus in relation to man ranged from 0.35/man-day in February to 133/man-day in July, with averages of 2.8 in the wet season, 36.9 in the dry season and 22/man-day for the whole year. 5. Monthly parous rates averaged 62.1% (range 0-88%); 2.8% of females were 2-pars, another 2.8% were 3-pars, but no older females of Hg.equinus were found (sample size 467). 6. These age-grading data indicate that Hg.equinus females have relatively short life expectancy and hence low vector potential, which may help to explain why YF virus has seldom been isolated from this vector species.

Authors+Show Affiliations

Insect Vector Control Division, Ministry of Health, Trinidad, West Indies.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

8097636

Citation

Chadee, D D., et al. "Seasonal Abundance, Biting Cycle, Parity and Vector Potential of the Mosquito Haemagogus Equinus in Trinidad." Medical and Veterinary Entomology, vol. 7, no. 2, 1993, pp. 141-6.
Chadee DD, Hingwan JO, Persad RC, et al. Seasonal abundance, biting cycle, parity and vector potential of the mosquito Haemagogus equinus in Trinidad. Med Vet Entomol. 1993;7(2):141-6.
Chadee, D. D., Hingwan, J. O., Persad, R. C., & Tikasingh, E. S. (1993). Seasonal abundance, biting cycle, parity and vector potential of the mosquito Haemagogus equinus in Trinidad. Medical and Veterinary Entomology, 7(2), 141-6.
Chadee DD, et al. Seasonal Abundance, Biting Cycle, Parity and Vector Potential of the Mosquito Haemagogus Equinus in Trinidad. Med Vet Entomol. 1993;7(2):141-6. PubMed PMID: 8097636.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Seasonal abundance, biting cycle, parity and vector potential of the mosquito Haemagogus equinus in Trinidad. AU - Chadee,D D, AU - Hingwan,J O, AU - Persad,R C, AU - Tikasingh,E S, PY - 1993/4/1/pubmed PY - 1993/4/1/medline PY - 1993/4/1/entrez SP - 141 EP - 6 JF - Medical and veterinary entomology JO - Med Vet Entomol VL - 7 IS - 2 N2 - The mosquito Haemagogus equinus is a known vector of yellow fever (YF) in central America. Seasonal abundance, daily biting activity and the age composition of adult Hg.equinus female populations were monitored weekly during 1981-82 by human collectors on the ground at Point Gourde Forest, Chaguaramas, 16 km west of Port of Spain, Trinidad. 2. Landing collections of Hg.equinus showed diurnal activity from 06.00 to 20.00 hours (suntime), with a single peak between 08.00 and 14.00 hours. 3. Overall, 5.6% of Hg.equinus were collected during the dry season (December-April) and 94.4% during the wet season (May-November). 4. Mean density of Hg.equinus in relation to man ranged from 0.35/man-day in February to 133/man-day in July, with averages of 2.8 in the wet season, 36.9 in the dry season and 22/man-day for the whole year. 5. Monthly parous rates averaged 62.1% (range 0-88%); 2.8% of females were 2-pars, another 2.8% were 3-pars, but no older females of Hg.equinus were found (sample size 467). 6. These age-grading data indicate that Hg.equinus females have relatively short life expectancy and hence low vector potential, which may help to explain why YF virus has seldom been isolated from this vector species. SN - 0269-283X UR - https://www.unboundmedicine.com/medline/citation/8097636/Seasonal_abundance_biting_cycle_parity_and_vector_potential_of_the_mosquito_Haemagogus_equinus_in_Trinidad_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0269-283X&date=1993&volume=7&issue=2&spage=141 DB - PRIME DP - Unbound Medicine ER -