Emergence, diversity and ecological notes on the caddisfly fauna (Insecta: Trichoptera) of the Black Sea watershed in Kosovo
عنوان دوره: دومین کنگره بین المللی حشره شناسی ایران
نویسندگان
چکیده
To date there have been numerous studies focusing on diversity, taxonomy, phylogeny and biogeography of caddisflies in Southeastern Europe and Balkan Peninsula. However most of these studies are result of nonsystematic collections and consequently, significant ecological parameters such as emergence, sex ratio and diversity patterns are often neglected. In this paper we analyzed adult caddisfly specimens collected by entomological net and ultraviolet pyramid type light trap with white sheet at twelve stations belonging to the Black Sea watershed in Kosovo. The sampling was carried out between March 2009 and November 2009 once per month at every sampling station.
We thus present emergence, diversity and ecological notes on the caddisfly fauna of this area based on a total of 8 889 adult individuals belonging to 79 species. The multidimensional scaling analysis of similarity between investigated stations revealed that trichopteran communities could be grouped according to the stream size, habitat type and geographical distance. The highest number of species was found in small streams and mid-reach streams which are outside inhabited areas and rich in habitats. Sex ratio is significantly different from optimal 1:1. In seven species only females were sampled and in 16 other only males were sampled. The highest number of species was collected during June and July and the lowest during March and November. Species Philopotamus montanus and Rhyacophila fasciata are eudominant species in most of the investigated stations. Results presented in this paper are an important tool in conservation and preservation measures and strategies for caddisfly fauna and in general for aquatic ecosystems in this part of Europe.
We thus present emergence, diversity and ecological notes on the caddisfly fauna of this area based on a total of 8 889 adult individuals belonging to 79 species. The multidimensional scaling analysis of similarity between investigated stations revealed that trichopteran communities could be grouped according to the stream size, habitat type and geographical distance. The highest number of species was found in small streams and mid-reach streams which are outside inhabited areas and rich in habitats. Sex ratio is significantly different from optimal 1:1. In seven species only females were sampled and in 16 other only males were sampled. The highest number of species was collected during June and July and the lowest during March and November. Species Philopotamus montanus and Rhyacophila fasciata are eudominant species in most of the investigated stations. Results presented in this paper are an important tool in conservation and preservation measures and strategies for caddisfly fauna and in general for aquatic ecosystems in this part of Europe.
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