Estimation of current population status of the Alcon large blue Phengaris alcon (Denis & Schiffermüller, 1775) (Lepidoptera: Lycaenidae) in Bela krajina (SE Slovenia) based on egg counts

Authors

  • Ivan Kljun Prvačina 121, SI-5297 Prvačina
  • Tjaša Zagoršek University of Primorska, Faculty of Mathematics, Natural Sciences and Information Technologies, Department of Biodiversity, Glagoljaška 8, SI-6000 Koper
  • Tadeja Rome Kleče 22h, SI-1000 Ljubljana
  • Tanja Lončar Ulica Dušana Kvedra 3, SI-3320 Velenje
  • Barbara Ramšak Čečovje 10a, SI-2390 Ravne na Koroškem

DOI:

https://doi.org/10.14720/ns.18.1.5-15

Keywords:

Phengaris alcon, Gentiana pneumonanthe, Papilionoidea, Bela krajina, Slovenia, oviposition, population size, species conservation

Abstract

An estimate of population size of the endangered Alcon large blue (Phengaris alcon) in Bela krajina (SE Slovenia) was performed based on egg counts. The presence of eggs has been confirmed in all seven currently known populations of the larval host plant Gentiana pneumonanthe in the area. Owing to the short distances between the populations it is probable that the species forms a single metapopulation with an estimated population size of about 190 individuals. One local extinction is documented on a site where P. alcon was present in 2008. We propose conservation measures to preserve the existence of P. alcon in Bela krajina.

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Published

30.06.2016

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Section

Scientific paper

How to Cite

Kljun, I., Zagoršek, T., Rome, T., Lončar, T., & Ramšak, B. (2016). Estimation of current population status of the Alcon large blue Phengaris alcon (Denis & Schiffermüller, 1775) (Lepidoptera: Lycaenidae) in Bela krajina (SE Slovenia) based on egg counts. Natura Sloveniae, 18(1), 5-15. https://doi.org/10.14720/ns.18.1.5-15

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