Skip to Main Content
Seed production and cone-feeding insects of Pinus pumila on the Kamtchatka Peninsula: aspects of coexistenceAuthor(s): Petr A. Khomentovsky; L. S. Efremova
Source: In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 316-320.
Publication Series: Paper (invited, offered, keynote)
Station: Northeastern Research Station
PDF: Download Publication (308.0 KB)
DescriptionInsects attacking seeds and cones of trees are significant for their economic consequences as well as for the ecological role in vegetation dynamics. Currently much is known about seed and cone insects feeding on upright trees (see Roques, this volume), but almost nothing is known about cone inhabitants of prostrate pines Pinus pumila (Pall.) Rgl., P. albicaulis Engelm., P. mugo Tur. These three vicariant species from young mountain systems of the northern hemisphere have evolved in unfavorable environments which have favored peculiar patterns of seed production and insect-host relations. Cone insect populations are strictly determined by well known periodicity of seed production which often causes the evolution of diapause in cone-feeding insects. This phenomenon occurs in upright trees and is perfectly illustrated by Lasiomma melania on Larix kamtchatica on the Kamtchatka Peninsula. Unlike Larix, Pinus pumila, whose seeds develop over 2 years, has peak crops every 2 to 3 years but in fact produces some cones every year. This happens because seeds are produced on mosaically dispersed local patches of trees varying in micro-climate and other environmental factors. There are small, contiguous patches of good seed production in almost each region. Another important feature of the stochasticity of seed production is that seed dispersal is affected by the nutcracker, Nucifraga caryocatactes L., which leads to wide exchange of genetic material, and, consequently, to high ecological valency of the tree species. In sharp contrast to the typical strong antibiosis towards xylophagous insects: the trees apparently tolerate parasitic-commensal relationships with the seed and cone feeding species.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationKhomentovsky, Petr A.; Efremova, L.S. 1991. Seed production and cone-feeding insects of Pinus pumila on the Kamtchatka Peninsula: aspects of coexistence. In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 316-320.
- Soil Properties Related to Coniferous Seedling Height Growth in Northern Wisconsin
- Population and evolutionary genetic studies of five-needle pines in Russia
- Screening larch in vitro for resistance to Mycosphaerella laricina
XML: View XML