<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The within-patch microdistribution and movements of adults of the critically endangered butterfly, <italic>Coenonympha oedippus</italic>, were studied using mark-recapture data from an isolated patch network, which consisted of 8 patches in central Slovenia. The impact of patch characteristics on both parameters was analyzed. Males fly longer distances and spend more time flying than females. The distances and seasonal pattern of male movements were dependent on the patch size, and on the microdistribution and density of freshly emerged (receptive) females. The spatial and temporal pattern of female microdistribution was influenced by vegetation height, the homogeneity of host plant stands and the shading of the ground and/or the lowest parts of herb layer. In the case of near continuous distribution of host plants within a patch, the structure of herb vegetation appears to be the major determinant of adult microdistribution. It affects the dynamics of butterfly emergence and the selection of oviposition sites. The per cent cover of the nectar plant, <italic>Potentilla erecta</italic>, does not play an important role in butterfly microdistribution.</p></abstract>

The within-patch microdistribution and movements of adults of the critically endangered butterfly, Coenonympha oedippus, were studied using mark-recapture data from an isolated patch network, which consisted of 8 patches in central Slovenia. The impact of patch characteristics on both parameters was analyzed. Males fly longer distances and spend more time flying than females. The distances and seasonal pattern of male movements were dependent on the patch size, and on the microdistribution and density of freshly emerged (receptive) females. The spatial and temporal pattern of female microdistribution was influenced by vegetation height, the homogeneity of host plant stands and the shading of the ground and/or the lowest parts of herb layer. In the case of near continuous distribution of host plants within a patch, the structure of herb vegetation appears to be the major determinant of adult microdistribution. It affects the dynamics of butterfly emergence and the selection of oviposition sites. The per cent cover of the nectar plant, Potentilla erecta, does not play an important role in butterfly microdistribution.

Determinants of Within-Patch Microdistribution and Movements of Endangered Butterfly <italic>Coenonympha Oedippus</italic> (Fabricius, 1787) (Nymphalidae: Satyrinae)

The Jovan Hadži Institute of Biology, Scientific and Research Centre of Slovenian Academy of Sciences and Arts, Novi trg 2, P. O. Box 306, SI-1000 Ljubljana, Slovenia

Hacquetia

Determinants of Within-Patch Microdistribution and Movements of Endangered Butterfly  (Fabricius, 1787) (Nymphalidae: Satyrinae)

The within-patch microdistribution and movements of adults of the critically endangered butterfly, Coenonympha oedippus, were studied using mark-recapture data...

Determinants of Within-Patch Microdistribution and Movements of Endangered Butterfly Coenonympha Oedippus (Fabricius, 1787) (Nymphalidae: Satyrinae)

Publié en ligne: 14 janv. 2010

Pages: 115 - 128

DOI: https://doi.org/10.2478/v10028-009-0007-x

Mots clés
markiranje-izpust-ponovni ulov, disperzija imagov v krpi, preletene razdalje v krpi, struktura vegetacije, Ljubljansko barje

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