Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-20T04:39:41.129Z Has data issue: false hasContentIssue false
  • English
  • Français

BIONOMICS OF PLATYLYGUS LURIDUS (HEMIPTERA: MIRIDAE) IN WISCONSIN JACK PINE SEED ORCHARDS

Published online by Cambridge University Press:  31 May 2012

Aunu Rauf ,
D. M. Benjamin  and
R. A. Cecich
Aunu Rauf
Affiliation:
Fakultas Pertanian, Institut Pertanian Bogor (IPB), Bogor, Indonesia.
D. M. Benjamin
Affiliation:
Department of Entomology, University of Wisconsin-Madison, Wisconsin 53706.
R. A. Cecich
Affiliation:
North Central Forest Experiment Station, Forestry Sciences Laboratory, Rhinelander, Wisconsin 54501.
Get access Rights & Permissions [Opens in a new window]

Abstract

Platylygus luridus (Reuter) causes conelet abortion and reduces seed production in jack pine, Pinus banksiana Lamb., seed orchards in northern Wisconsin. One generation a year occurs and the insect overwinters as an egg that hatches during late May. The nymphs pass through 5 instars within 5 to 6 weeks. Adults were abundant during July and early August 1982. Eggs were laid singly within the phloem tissues of current year's shoots just below the bases of needle fascicles. The nymphs fed predominantly on the tender tissues of shoots or needles. The adults preferred to feed on ovules in the conelets, and conelet abortion resulted. About 74% of the total abortion occurred during adult feeding periods. Conditions favoring P. luridus population increases in the jack pine seed orchards included: densely planted seed orchards on high fertility sites; trees 6 to 10 years old with closed crowns or in shade; vigorously growing trees that were well watered and fertilized. Natural enemies included predators Deraeocoris albigulus, D. (possibly) laricicola, Evarcha nr. hoyi, and Misumenops asperatus.

Résumé

Le Platylygus luridus (Reuter) a causé l'avortement des cônelets et réduit la production de graines dans des pépinières du pin gris, Pinus banksiana Lamb. situées au nord du Wisconsin. On a observé une génération par an et l'insecte hiverne sous forme d'oeufs qui éclosent tard en mai. Les larves passent par 5 stades durant de 5 à 6 semaines. Les adultes étaient abondants au cours de juillet et au début d'août 1982. Les oeufs sont déposés isolément dans les tissus du phloème des pousses de l'année, juste sous la base des faisceaux d'aiguilles. Les larves se nourrissent principalement à partir des tissus tendres des pousses ou des aiguilles. Les adultes préfèrent s'alimenter à partir des ovules dans les cônelets, causant l'avortement des cônelets. Environ 74% des avortements se sont produits durant les périodes d'alimentation des adultes. Les conditions favorisant la croissance des populations du P. luridus dans les pépinières de pin gris étaient entre autres : une densité de plantules élevée sur des sols fertiles; des arbres de 6–10 ans dont la couronne était fermée où à l'ombre; des arbres vigoureux bien irrigués et fertilisés. Les ennemis naturels étaient entre autres les prédateurs Deraeocoris albigulus, D. (peut-être) laricicola, Evarcha nr. hoyi et Misumenops asperatus.

Type
Articles
Information
The Canadian Entomologist , Volume 116 , Issue 9 , September 1984 , pp. 1219 - 1225
Copyright
Copyright © Entomological Society of Canada 1984

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

Blatchley, W. S. 1926. Heteroptera or true bugs of eastern North America with especial reference to the faunas of Indiana and Florida. Nature Publishing, Indianapolis, IN. 1116 pp.CrossRefGoogle Scholar
Carvalho, J. C. M. 1959. Catalogue of the Miridae of the World. Arch. Mus. nac., Rio de J. 48(4): 1–384.Google Scholar
Jones, P. A. 1963. Forest insect surveys within specified areas. Ph.D. Thesis, Department of Entomology, University of Wisconsin, Madison. 250 pp.Google Scholar
Kelton, L. A. and Knight, H. H.. 1970. Revision of the genus Platylygus, with descriptions of 26 new species (Hemiptera: Miridae). Can. Ent. 102: 1429–1460.Google Scholar
Knight, H. H. 1915. Observations on the oviposition of certain capsids. J. econ. Ent. 8: 293–298.Google Scholar
Knight, H. H. 1941. The plant bugs, or Miridae of Illinois. Ill. nat. Hist. Surv. Bull, 22. 234 pp.Google Scholar
Rauf, A. 1983. The impact of insects on seed production in jack pine. Ph.D. Thesis, Department of Entomology, University of Wisconsin, Madison. 138 pp.Google Scholar
Rauf, A., Cecich, R. A., and Benjamin, D. M.. 1981. Life table evaluation of conelet and cone mortality for jack pine in Wisconsin. pp. 166–175in Guries, R. P. (Ed.), Proc. Second North Central For. Tree Improv. Assoc. Conf., August 4–5. Lincoln, NE.Google Scholar
Rauf, A., Cecich, R. A., and Benjamin, D. M.. 1984. Conelet abortion in jack pine caused by Platylygus luridus (Hemiptera: Miridae). Can. Ent. 116: 000–000.Google Scholar
Reuter, O. M. 1909. Bemerkungen über nearktische Capsiden nebst Beschreibung neuer Arten. Acta Soc. Sci. fenn. 36. 86 pp. (Cited in Kelton and Knight (1970).)Google Scholar
Uhler, P. R. 1895. A preliminary list of the Hemiptera of Colorado. Colo agric. Exp. Stn Bull. 31.Google Scholar
Van Duzee, E. P. 1912. Hemipterological gleanings. Buffalo Soc. Sci. Bull. 10: 477–512.Google Scholar
Van Duzee, E. P. 1915. New genera and species of North American Hemiptera. Pomona J. Ent. 7: 109–121.Google Scholar