Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-07T01:59:26.134Z Has data issue: false hasContentIssue false

Some Micro-organisms Associated with the Weevils Sitophilus granarius (L.) and Sitophilus oryza (L.), (Coleoptera): II. Population differences of mycetomal micro-organisms in different strains of S. granarius

Published online by Cambridge University Press:  31 May 2012

Extract

Certain kinds of micro-organisms occurring in close internal association with insects, and often harboured in apparently specialized organs, are, at least in some species, of benefit to the insects in supplying them with needed dietary constituents, e.g., vitamins of the B complex (3).

During the past twenty years conflicting statements have been made about the presence of mycetomal micro-organisms in Sitophilus granarius (6, 11). Recently some general clarification has been achieved (9). It seems that while this species commonly harbours such micro-organisms, there exists an Egyptian strain apparently free of them. Furthermore, a variety africana, distinguishable by its smaller size and lighter colour, has been described from the Nile Valley (1, 5).

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1956

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

(1)Buchner, P. 1952. Endosymbiose der Tiere mit pflanzlichen Mikro-organismen. Verlag Birkhauser, Basel and Stuttgart.Google Scholar
(2)Finney, J. D. 1947. Probit Analysis. Cambridge University Press.Google Scholar
(3)Fraenkel, G. 1952. The role of symbionts as sources of vitamins and growth factors for their hosts. Tijd. Ent. 95: 183.Google Scholar
(4)Johansen, O. A. and Butt, F. H.. 1941. Embryology of Insects and Myriapods. McGraw-Hill Book Co. Inc.Google Scholar
(5) Koch, A. 1936. Symbiosestudien. II. Experimentelle Untersuchungen an Oryzaephilus surinamensis L. Z. Morph. Okol. Tiere. Berlin. 32: 139.Google Scholar
(6)Mansour, K. 19354a. The so-called symbiotic relationship between Coleopterous insects and intracellular micro-organisms. Quart J. Micro. Sci. 77: 255.Google Scholar
(7)Mansour, K. 1935b. The micro-organism-free and infected Calandra granaria. Bull. Soc. ent. Egypte, Cairo. 19: 290.Google Scholar
(8)Musgrave, A. J. and Miller, J. J.. 1951. A note on some preliminary observations of the effect of the antibiotic terramycin on insect symbiotic micro-organisms. Canad. Ent. 83: 343.CrossRefGoogle Scholar
(9)Musgrave, A. J. and Miller, J. J.. 1953. Some micro-organisms associated with the weevils Sitophilus granarius (L.) and Sitophilus oryza (L.). I. Distribution and description of the organisms. Canad. Ent. 85: 378.CrossRefGoogle Scholar
(10)Richards, O. W. 1947. Observations on grain weevils, Calandra (Col. Curculionidae.) I. General Biology and oviposition. Proc. zool. Soc. Lond. 117: 1.CrossRefGoogle Scholar
(11)Scheinert, W. 1933. Symbiose und Embryonalentwicklung bei Rüsselkäfern. Z. Morph. Okol. Tiere 27: 76.CrossRefGoogle Scholar
(12)Steinhaus, E. A. and Bell, C. R.. 1953. The effect of certain micro-organisms and antibiotics on stored-grain insects. J. econ. Ent. 46: 582.CrossRefGoogle Scholar