Report on the bed-bug.

  • Great Britain. Ministry of Health.
Date:
1934
Catalogue details

Licence: Public Domain Mark

Credit: Report on the bed-bug. Source: Wellcome Collection.

    33/50 (page 29)
    stage was 30.2 days. The pre-oviposition period of the adult, the incubation period of the eggs, and the development period of the nymphs showed much variation under room conditions, but remained relatively constant at uniform temperature and humidity. The adult female will lay eggs before feeding. Temperature and relative humidity are important factors in the incubation period of the egg and the life of the nymph without food. The length of life varies inversely with increase of temperature above 13° C. Relative humidities below 50 per cent. cause death of the nymphs in less time than those between 50 per cent. and 75 per cent. The amount of blood consumed at a ‘‘ meal ”’ and during the entire growing period was ascertained. The size and weight of the eggs, weight at the different stages, and the measurements of the five instars and the adult stage are given. The Bed-bug does not hibernate during the winter when the temperature, relative humidity and food conditions are suitable for continued activity. JORDON, K. (1922): Hctoparasites, 1, 284. The organ of Berlese. Kemper, H. (1929): Zeitschrift fiir Morphologie und Okologie der Tiere, 15, 524. ” ‘The stink gland of Bed-bugs. —— (1930): Ibid., 19, 160. Viability of Bed-bugs in various stages when fasting. Newly hatched nymphs are least resistant to hunger. Without food they average five weeks of life, with 10 weeks as amaximum. Adults can live up to 38 weeks (average 20 weeks) without food. ——— (1932): Ibid., 24, 491. The mechanism of the blood-sucking action in Bed-bugs. ——— (1929): Z. Desinfekt., 21, 61. Observations on the perforation of the skin and sucking of blood by Bed-bugs. (1929): Ibid., 21, 285. The senses of perception in Bed-bugs. Attraction of human body is not perceptible at distances greater than 4cem. Bed-bugs find their food by wandering at random. ——— (1930): Z. Desinfekt. Gesundheitsw., 22, 406. The effect of temperature and nourishment on reproduction, longevity and resistance of Bed-bugs. ——— (1932): Zeitschrift fur Parasitenkunde, 5, 112. Rupture of the intestinal tract can often be observed to occur in Bed-bugs and is usually fatal. KLINGMULLER, —. (1917): Muinch. med. Wschr., 64, 1,653. A general account of the Bed-bug, its life history, habits, etc. KonoxnHov, —. (1924): Russ. J. Trop. Med., p. 49. Anopheles sp. attacked Bed-bugs, withdrawing all their blood. LAVIER, G. (1921): Lab. Paras. Fac. Med., Paris. : Gives a list of various bacteria, etc., associated with C. lectularius. LEEFMAN, S. (1919): Teysmannia, 30, 12. (In Dutch). Observations on the biology of the Bed-bug. Lzon, N. (1924): Ann. Parasit. hum. comp., 2, 71. Mouth-parts of Bed-bugs.