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Étude des Possibilités D'alimentation D'elatophilus nigricornis [Hem. Anthocoridae] sur les Larves de Matsucoccus Feytaudi [Coccoidea Margarodidae] au Moyen de Techniques Immunochimiques

Étude des Possibilités D'alimentation D'elatophilus nigricornis [Hem. Anthocoridae] sur... Summary In the natural conditions, we observed an annual and systematic drop in the population level of Elatophilus nigricornis Zetterstedt. These weak levels, responsable for the inefficacy of the predator, coincides with the presence of the first larval stage (where it is attached at the base of cracks in the bark) of Matsucoccus feytaudi Ducasse. We have used immunochemical, immunodiffusion and immunoelectrophoresis methodes to verify if the larvae of Matsucoccus were truly the prey of Elatophilus. Many fairly weak anti Matsucoccus serums have been obtained from the eggs of Matsucoccus. They have shown to be very specific and apt to reveal from 3 to 6 characteristic antigens of this specis. It was possible for us to positively identify this prey in the digestive tube of Elatophilus nigricornis. We have shown that Elatophilus nigricornis feeds on Matsucoccus- feytaudi beginning with the larvae of the first and second stages (where it is attached to the base of cracks in the bark). This study has allowed us also to confirm that Anthocoridae feeds on Matsucoccus in its mobile stages and we were able to establish that other predators of the scale insect exist in the cracks of the bark. Thus the utilization of immunodiffusion and immunoelectrophoresis (because of their specificness and sensitivity) prove particularly interesting for their proving the predator-prey relationships - this in spite of the great quantity of prey that it is necessary to harvest to prepare the immunserums. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annales de la Société entomologique de France (N S ) Taylor & Francis

Étude des Possibilités D'alimentation D'elatophilus nigricornis [Hem. Anthocoridae] sur les Larves de Matsucoccus Feytaudi [Coccoidea Margarodidae] au Moyen de Techniques Immunochimiques

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Publisher
Taylor & Francis
Copyright
© 1982 Société entomologique de France
ISSN
2168-6351
eISSN
0037-9271
DOI
10.1080/21686351.1982.12278305
Publisher site
See Article on Publisher Site

Abstract

Summary In the natural conditions, we observed an annual and systematic drop in the population level of Elatophilus nigricornis Zetterstedt. These weak levels, responsable for the inefficacy of the predator, coincides with the presence of the first larval stage (where it is attached at the base of cracks in the bark) of Matsucoccus feytaudi Ducasse. We have used immunochemical, immunodiffusion and immunoelectrophoresis methodes to verify if the larvae of Matsucoccus were truly the prey of Elatophilus. Many fairly weak anti Matsucoccus serums have been obtained from the eggs of Matsucoccus. They have shown to be very specific and apt to reveal from 3 to 6 characteristic antigens of this specis. It was possible for us to positively identify this prey in the digestive tube of Elatophilus nigricornis. We have shown that Elatophilus nigricornis feeds on Matsucoccus- feytaudi beginning with the larvae of the first and second stages (where it is attached to the base of cracks in the bark). This study has allowed us also to confirm that Anthocoridae feeds on Matsucoccus in its mobile stages and we were able to establish that other predators of the scale insect exist in the cracks of the bark. Thus the utilization of immunodiffusion and immunoelectrophoresis (because of their specificness and sensitivity) prove particularly interesting for their proving the predator-prey relationships - this in spite of the great quantity of prey that it is necessary to harvest to prepare the immunserums.

Journal

Annales de la Société entomologique de France (N S ) – Taylor & Francis

Published: Jan 31, 1982

Keywords: Heteroptera; Anthocoridae; Elatophilus nigricornis; Homoptera; Margarodidae; Matsucoccus feytaudi; Pinaceae; Pinus pinaster; Forêt; Prédateur; Proie; Relation prédateur-proie; Immunodiffusion; Immuno-électrophorèse

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