Faculty of Biology, University of Latvia
Hard copy: ISSN 1691–8088
On-line: ISSN 2255–9582
Env Exp Biol (2011) 9: 1–8
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Environmental and

Env Exp Biol (2011) 9: 1–8

Original Article

Seasonal activity of wolf spiders (Araneae: Lycosidae) in coastal dune habitats at Akmensrags-Ziemupe Nature Reserve, Latvia

Inese Cera1,2*, Voldemārs Spuņģis3
1Faculty of Natural Sciences and Mathematics, University of Daugavpils, Vienības 13, Daugavpils LV–5401, Latvia
2Laboratory of Bioindication, Institute of Biology, University of Latvia, Miera 3, Salaspils LV–2169, Latvia
3Department of Zoology and Animal Ecology, University of Latvia, Kronvalda Bulv. 4, Rīga LV–1586, Latvia
*Corresponding author, E-mail: inese.cera@gmail.com


Observation of spider seasonal activity are needed to determine the complete spider fauna of investigated habitats. Spider seasonal dynamics have not been studied previously in Latvia. Here we present the first results on seasonal activity of Lycosidae spiders in dune habitats at the coast of Baltic Sea in Latvia. The spiders were collected with modified pitfall traps from April 2 until November 12, 2006. In total, 843 adult spiders of five genera and 15 species and 531 juvenile spiders were collected. High activity periods occurred in spring, summer and autumn, indicated by spider numbers. Specific species were characteristic for each season: Alopecosa cuneata, Pardosa palustris, P. pullata, Trochosa ruricola and T. terricola – for spring; Alopecosa pulverulenta, Pardosa palustris and Xerolycosa miniata – for summer (the last two species were found only in summer) and Alopecosa fabrilis – for autumn and also spring. Males were more active than females. The activity of juveniles was positively correlated with mean air temperature during the observation period, while adults did not show this relationship.

Key words: coastal dunes, Lycosidae, phenology, spider species community.

Env Exp Biol (2011) 9: 1–8
 DOI: http://doi.org/10.22364/eeb

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