Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-28T06:22:33.806Z Has data issue: false hasContentIssue false
  • English
  • Français

OBSERVATIONS SUR LA STRUCTURE DES OCELLES LARVAIRES (STEMMATES) DE CERTAINS LÉPIDOPTÈRES1

Published online by Cambridge University Press:  31 May 2012

Bernard J. R. Philogène
Bernard J. R. Philogène
Affiliation:
Département de Biologie, Université d'Ottawa, Ottawa, Ont.
Get access Rights & Permissions [Opens in a new window]

Abstract

Larval ocelli (stemmata) of four species of Lepidoptera (Malacosoma pluviale, M. disstria, Isia isabella and Hypocrita jacobaeae) were examined under the photonic and the scanning electron microscope. Two types of ocelli are present, one with three convexities, the other with a single one. Differences exist between species. Examination of the internal structure reveals the presence of two separate morphological units, related to the external variations. The significance of these observations is discussed in the light of previous findings.

Résumé

Les ocelles larvaires (stemmates) de quatre espèces de Lépidoptères (Malacosoma pluviale, M. disstria, Isia Isabella et Hypocryta jacobaeae) ont été examinés au microscope photonique et au microscope électronique à balayage. Les ocelles appartiennent à deux types morphologiques, l’un à triple convexité, l’autre à convexité simple. Il existe des différences entre les espèces. L’examen de la structure interne révèle la présence de deux entités morphologiques séparées correspondant aux différences observées en surface. La signification de ces observations est discutée, à la lumière des travaux antérieurs.

Type
Articles
Information
The Canadian Entomologist , Volume 107 , Issue 10 , October 1975 , pp. 1073 - 1080
Copyright
Copyright © Entomological Society of Canada 1975

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

Bibliographie

Beck, S. D. 1968. Insect photoperiodism. Academic Press, New York.Google Scholar
Cameron, E. 1935. A study of the natural control of ragwort (Senecio jacobaeae L.). J. Ecol. 23: 265–322.CrossRefGoogle Scholar
Dethier, V. G. 1942. The dioptric apparatus of lateral ocelli. I. The corneal lens. J. Cell. Comp. Physiol. 19: 303–313.Google Scholar
Dethier, V. G. 1943. The dioptric apparatus of lateral ocelli. II. Visual capacities of the ocellus. J. cell. comp. Physiol. 22: 115–126.CrossRefGoogle Scholar
Dethier, V. G. 1963. The physiology of insect senses. Methuen, London.CrossRefGoogle Scholar
Eaton, J. L. 1971. Insect photoreceptor: an internal ocellus is present in sphinx moths. Science 173: 822–823.Google Scholar
Ishikawa, S. 1969. The spectral sensitivity and the components of the visual system in the stemmata of silkworm larvae, Bombyx mori L. (Lepidoptera: Bombycidae). Appl. Ent. Zool. 4: 87–99.Google Scholar
Mansingh, A. and Smallman, B. N.. 1972. Variation in the polyhydric alcohol in relation to diapause and coldhardiness in the larvae of Isia isabella. J. Insect Physiol. 18: 1565–1571.Google Scholar
Mazokhin-Porshnyakov, G. A. 1969. Insect vision. Plenum Press, New York.Google Scholar
Seugé, J. 1973. Recherche du rôle des stemmates dans la perception de la photopériode et l'induction de la diapause chez Pieris brassicae. Bull. Soc. Zool. Fr. 98: 435–440.Google Scholar
Wellington, W. G. 1957. Individual differences as a factor in population dynamics: the development of a problem. Can. J. Zool. 35: 293–323.Google Scholar
Wellington, W. G. 1964. Qualitative changes in populations in unstable environments. Can. Ent. 96: 436–451.CrossRefGoogle Scholar