Biodiversity of Carabidae in Sugar Beet Stands with Emphasis on Occurrence and Importance of Autodominant Species Harpalus rufipes – Long Term
2022
Ivanic Porhajasova, Jana | Babosova, Maria
The aim of the study was to evaluate the biodiversity, occurrence and importance of the autodominant species Harpalus rufipes (Carabidae) in sugar beet stand. The research was conducted in the Nitra - Dolná Malanta locality, during the vegetation period from 2017 to 2021, using the ground trap method. Its abundance during the monitored years and sampling points varied from 95 to 209 individuals, with a high dominance from 62.95 to 86.39%. Its importance in agroecosystems can be assessed primarily in terms of trophic preferences. Harpalus rufipes acts as a granivorous species, but also eats invertebrates, larvae, mollusks, and earthworms, as well as agricultural pests. Predatory species are natural enemies of many pests of agricultural crops in agrocenoses, as they help prevent the gradation of pests. Granivorous species that consume weed seeds, such as the H. rufipes, are also beneficial, and in agroecosystems they function as omnivorous species; however, a problem occurs when the they consume seeds of cultivated plants. In agroecosystems, it serves as an omnivorous species. Carabidae larvae are predatory, but with less food spectrum than adults. However, it also acts as a pest for agricultural crops. The spectrum of loot and the degree of trophic specialization also depend on the season and occasion. These individuals perform ecosystem services to the fullest by destroying.
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