Cookies Policy
X

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

Genetic divergence among populations of two closely related species of Cicada Linnaeus (Hemiptera: Cicadoidea) in Portugal

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 Insect Systematics & Evolution

Portuguese populations from localities of sympatry and allopatry of Cicada orni Linnaeus and C. barbara (StÅl), a pair of closely related cicada species, were screened electrophoretically to clarify their genetic relationships. Thirteen enzyme systems coded by 19 presumptive loci were analysed. Seven loci were polymorphic on the 0.95 criterion. Data on within- and between-species variation, based on several genetic estimates (number of alleles per locus, amount of polymorphism, heterozygosity and genetic divergence) are presented. A dendrogram was constructed based on the Cavalli-Sforza & Edwards chord distance, using the UPGMA clustering method. Two groups were produced, one clustering the populations of C. orni and a second one clustering C. barbara. The former cicada species was much more variable genetically than C. barbara, this latter being a very homogeneous species. The high level of genetic similarity might suggest that C. barbara is a relatively recent immigrant to the Iberian Peninsula from its origin in North Africa. Alternatively, the present populations of C. barbara in Portugal might originate from small relict populations having survived the climatic cooling during the ice ages in a few warm refugia. Moreover, the present results suggest that reproductive isolation and therefore speciation in these cicadas may have occurred at a smaller genetic divergence level than in some other insects.

Affiliations: 1: Departamento de Zoologia & Antropologia and Centro de Biologia Ambiental, Faculdade de Ciências de Lisboa, C2, Campo Grande, 1700 Lisboa, Portugal; 2: Centro de Biologia Ambiental, Faculdade de Ciências de Lisboa, Campo Grande, 1700 Lisboa, Portugal

Loading

Full text loading...

/content/journals/10.1163/187631201x00047
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/187631201x00047
Loading

Article metrics loading...

/content/journals/10.1163/187631201x00047
2001-01-01
2016-12-06

Sign-in

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:
     
    Insect Systematics & Evolution — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation