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Population studies, physiological state and mortality factors of overwintering adult populations of females of Culex pipiens L. (Diptera: Culicidae)

  • J. O. A. Onyeka (a1) and P. F. L. Boreham (a1)
Abstract

The biology of overwintering populations of adults of Culex pipiens L. was studied between October 1977 and April 1980 in southern England. Data obtained from population studies showed that there was a rapid build-up at the beginning of hibernation in August, reaching a peak in late October-early November each year and gradually decreasing from December. Extensive movement both in and out and within the hibernation site occurred, with many individuals changing their locations or hibernacula during the course of hibernation. Studies on induced feeding showed that in the early months of hibernation (August-October) exposure to constant light for a minimum period of 12 days was required before the females would take a blood-meal. This period decreased during the course of hibernation. Observations on the physiological condition of hibernating females revealed that up to 90% of the population were inseminated. A few parous females entered hibernation shelters at the onset of winter but did not survive the winter. Furthermore, females used up about 80% of their fat food reserves during hibernation, while there was little or no change in the quantity of glycogen present. From an assessment of the impact of mortality factors on a population of known size, it was observed that exodus from the hibernation shelters accounted for about 30% reduction in the population size while depletion of food reserves and predation by spiders accounted for approximately 15 and 20% mortality, respectively.

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Berg, M. & Lang, S. (1948). Observations of hibernating mosquitoes in Massachusetts.—Mosquito News 8, 7071.
Bidlingmayer, W. L. & Hem, D. G. (1973). Sugar feeding by Florida mosquitoes.—Mosquito News 33, 535538.
Boreham, P. F. L. (1975). Some applications of bloodmeal identifications in relation to the epidemiology of vector-borne tropical diseases.—J. trop. Med. Hyg. 78, 8391.
Buffington, J. D. (1972). Hibernaculum choice in Culex pipiens.—J. med. Entomol. 9, 128132.
Buffington, J. D. & Zar, J. H. (1968). Changes in fatty acid composition of Culex pipiens pipiens during hibernation.—Ann. ent. Soc. Am. 61, 774775.
Bursell, E. (1959). The water balance of tsetse flies.—Trans. R. ent. Soc. Lond. 111, 205235.
Buxton, P. A. (1935). Changes in the composition of adult Culex pipiens during hibernation.—Parasitology 27, 263265.
Christophers, S. R. (1911). The development of the egg follicle in anophelines.—Paludism no. 2, 7388.
Clements, A. N. (1955). The sources of energy for flight in mosquitoes.—J. exp. Biol. 32, 547554.
Clements, A. N. (1963). The physiology of mosquitoes.—393 pp. Oxford, Pergamon Press (Int. Ser. Monogr. Pure & Appl. Biol. vol. 17).
Cockbain, A. J. (1961). Fuel utilization and duration of tethered flight in Aphis fabae Scop.—J. exp. Biol. 38, 163174.
Detinova, T. S. (1962). Age-grouping methods in Diptera of medical importance with special reference to some vectors of malaria.—Monograph Ser. W.H.O. no. 47, 216 pp.
Folch, J., Lees, M. & Sloane, S. G. H. (1957). A simple method for the isolation and purification of total lipids from animal tissues.—J. biol. Chem. 226, 497509.
Gillies, M. T. & Wilkes, T. J. (1965). A study of the age-composition of populations of Anopheles gambiae Giles and A. funestus Giles in North-eastern Tanzania.—Bull. ent. Res. 56, 237262.
Jumars, P. A., Murphey, F. J. & Lake, R. W. (1969). Can blood-fed Culex pipiens L. overwinter?Proc. New Jers. Mosq. Exterm. Ass. 56, 219225.
Lomax, J. L. (1967). Fall mosquito breeding and hibernation in an area of the Delaware River survey.—Proc. New Jers. Mosq. Exterm. Ass. 54, 170178.
MacInnis, A. J. (1970). The Montgomery determination of glycogen.—p. 187in MacInnis, A. J. & Voge, M. (Eds.). Experiments and techniques in parasitology.—232 pp. San Francisco, Freeman.
Marshall, J. F. (1938). The British mosquitoes.—341 pp. London, Brit. Mus. (Nat. Hist.).
Montgomery, R. (1957). Determination of glycogen.—Archs Biochem. Biophys. 67, 378386.
Muirhead Thomson, R. C. (1938). The reactions of mosquitoes to temperature and humidity.—Bull. ent. Res. 29, 125140.
Nayar, J. K. & Van Handel, E. (1971). The fuel for sustained mosquito flight.—J. Insect Physiol. 17, 471481.
Onyeka, J. O. A. (1980). Studies on the ecology and biology of Culex pipiens L. and C. torentium Martini (Diptera: Culicidae) in Britain.—329 pp. Ph.D. thesis, Univ. London.
Onyeka, J. O. A. (1983). Studies on the natural predators of Culex pipiens L. and C. torrentium Martini (Diptera: Culicidae) in England.—Bull. ent. Res. 73, 185194.
Rowley, W. A. (1970). Interval flights and glycogen utilization by the mosquito, Culex tarsalis.J. Insect Physiol. 16, 18391844.
Service, M. W. (1968). Observations on the ecology of some British mosquitoes.—Bull. ent. Res. 59, 161194.
Shimogama, M. & Takatsuki, Y. (1967). Seasonal changes in the distribution and abundance of mosquitoes especially of Culex pipiens pallens in a cave in Nagasaki City [in Japanese].—Endem. Dis. Bull. Nagasaki Univ. 8, 159165.
Slaff, M. E. & Crans, W. J. (1977). Parous rates of overwintering Culex pipiens pipiens in New Jersey.—Mosquito News 37, 1114.
Tate, P. & Vincent, M. (1932). Influence of light on the gorging of Culex pipiens L.—Nature, Lond. 13, 366367.
Tate, P. & Vincent, M. (1936). The biology of autogenous and anautogenous races of Culex pipiens L. (Diptera: Culicidae).—Parasitology 28, 115145.
Tekle, A. (1960). The physiology of hibernation and its role in the geographical distribution of populations of the Culex pipiens complex.—Am. J. trop. Med. Hyg. 9, 321330.
Van Handel, E. (1967). Determination of fructose and fructose-yielding carbohydrates with cold anthrone.—Analyt. Biochem. 19, 193194.
Worth, C. B. (1953). Construction and use of a simplified window trap for insects.—Mosquito News 13, 204206.
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Bulletin of Entomological Research
  • ISSN: 0007-4853
  • EISSN: 1475-2670
  • URL: /core/journals/bulletin-of-entomological-research
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