Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Spreading the Risk of Extinction By Genetic Diversity in Populations of the Carabid Beetle Pterostichus Oblongopunctatus F. (Coleoptera, Carabidae)

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

Identification of insect species often is only possible with the help of characters that do not have a direct selective value. Such characters may reflect pleiotropic action of genes. This hypothesis was tested in the carabid Pterostichus oblongopunctatus. The closely related species P. quadrifoveolatus has 3 large pits on each elytron, and prefers sites where wood has been burned. P. oblongopunctatus is a common forest species and two groups of morphs can be recognized: low-pitters with 4-5 pits on each elytron in a somewhat winding row, and high-pitters with 6-8 (or more) pits in a straight row. In dry forests the proportion of high-pitters is lower than in moist forests. Assuming pit numbers are genetically determined this suggests that low-pitters are favoured by relatively dry conditions, and high-pitters by moist conditions. Moreover, the shift of the proportion of high-pitters from year to year is correlated with the amount of precipitation in May-August, the period of larval development, especially with the accumulated deviations from the normal amount of rain. The latter suggests a genetical base for the two groups of morphs, which was supported by comparing the progeny of low-pitters with that of high-pitters. Selection experiments suggest that low-pitters are favoured by dry conditions and high-pitters by moist conditions during larval development. Samplings from different parts of Europe were in accordance with the hypothesis: In Poland, with a lower precipitation than Drenthe (The Netherlands), the proportion of low-pitters was higher, and in the Bavarian Alps, with about the same mean amount of precipitation as Drenthe, but on heavy loam, the proportion of high-pitters was higher than in Drenthe. The occurrence of some genotypes with a different moisture tolerance in the same population allows the species to occupy a wide range of forests, and to live with relatively small fluctuations in numbers in areas with highly unpredictable rainfall. The chance of the population to go extinct is decreased by spread of the risk over some genotypes with a differing tolerance of moisture conditions. P. quadrifoveolatus (with only 3 pits and considered to be a good species) represents the morph with a high tolerance of dry conditions, viz. after a forest fire.

Affiliations: 1: (Biological Station LUW, Kampsweg 27, 9418 PD Wijster, The Netherlands


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Netherlands Journal of Zoology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation