Records by time
Lycosidae 0-19001901-19501951-20002001-2021
Pardosa agrestis (Westring, 1861) Not endangered 159× 137× 305×

Pardosa agrestis (Westring, 1861)

Czech nameslíďák rolní
Threat levelNot endangered
Records305 nálezů, 112 kvadrátů
First record 1894, A. Nosek, Nosek 1895
Last record 2020 , Ondřej Machač
Distribution areaPalaearctic - E-A, eM
Phytogeographic areaThermo, Meso
Původnost stanovišťsemi-natural, disturbed
Humidityvery dry, dry, (humid)
StratumGround layer
Osvětlení stanovišťopen
Hojnost výskytuvery abundant
Altitude150-800

Bibliography

 © Oto Zimmermann
Herbicides based upon glufosinate‐ammonium (GLA) are among the world’s most widely used. They also are applied on the most prominent oil crops as desiccants in combination with pod sealants to prevent pod shatter and seed loss close to harvest. Even though these crops occupy a significant part of the world’s agroecosystems, the effects of GLA herbicides on non‐target arthropods, and in particular natural enemies of pests, have been studied very rarely, and such effects of pod sealants have never been studied. We studied in our laboratory mortality as well as prey capture efficiency of the common GLA herbicide and desiccant Basta 15 ® , pod sealant Arrest ® , and a mixture of both on the wolf spider Pardosa agrestis. We found that Basta 15 ® and the mixture had lethal effect on spiders. We also found significant, short‐term effect on predatory activity of spiders after all treatments. Basta 15 ® significantly influenced the amount of captured prey also in the long term. This is the first study showing lethal effect on spiders of the herbicide and herbicide plus pod sealant mixture. This is also the first study examining the effects of pod sealant on the mortality and predatory activity of a pest antagonist. More studies regarding the effects of agricultural chemical mixes are needed to uncover their effects on beneficial organisms existing within agroecosystems.

 © Oto Zimmermann
Glyphosate-based herbicides are the world’s most consumed agrochemicals, and they are commonly used in various agroecosystems, including forests, as well as in urban zones and gardens. These herbicides are sold as formulations containing adjuvants. Other tank-mixing adjuvants (most often surfactants) are commonly added to these formulations prior to application. According to the manufacturers of agrochemicals, such tank mixes (as these are known in agronomic and horticultural practice) have modified properties and perform better than do the herbicides as used alone. The effects of these tank mixes on the environment and on beneficial arthropods are almost unknown. Therefore, we studied whether a herbicide formulation mixed with adjuvant has modified effects on one of the most common genera of ground-dwelling wolf spiders vis- a-vis the herbicide formulation and adjuvants themselves. Specifically, we studied the synergistic effect in the laboratory on the predatory activity (represented by the number of killed flies) of wolf spiders in the genus Pardosa after direct treatment using the glyphosate-based herbicide formulation Roundup klasik Pro ® , Roundup klasik Pro ® in a mixture with the surfactant Wetcit ® , Roundup klasik Pro ® in a mixture with the surfactant Agrovital ® , and the surfactants alone. We found that pure surfactants as well as herbicide-and-surfactants tank mixes significantly decrease the predatory activity of Pardosa spiders in the short term even as Roundup klasik Pro ® did not itself have any such effect. Our results support the hypothesis that plant protection tank mixes may have modified effect on beneficial arthropods as compared to herbicide formulations alone. Therefore, testing of pesticide tank mixes is highly important, because it is these tank mixes that are actually applied to the environment.

Gallery

Statistics

By month


By altitude


By collecting method (305 used records)
Pardosa agrestis (Westring, 1861) ESMalesFemalesJuvenilesRecords
Individuální sběr5241040
Zemní past246784486152
Neurčeno347058
Žlutá miska11832048
Smyk191203
Sklepávání1001
Prosev40703
 MalesFemalesJuvenilesRecords

By biotope (305 used records)
Pardosa agrestis (Westring, 1861) ESMalesFemalesJuvenilesRecords
Těžebny písku a jiných nezpevněných hornin2904
Mezofilní louky2403
Úhory3303
Paseky0101
Ruderály391407
Vřesoviště nižších poloh1701
Ostatní pole6642115933
Výsadby listnáčů0001
Slaniska2302
Neurčeno10753910159
Obilná pole0102
Polní biotopy32604
Suché doubravy151202
Haldy a výsypky331410
Lužní lesy nížin206601313
Kamenolomy3104
Okraje silnic6302
Suché louky15506
Xerotermní travinobylinná společenstva3845408
Břehy tekoucích vod5304
Ovocné sady s luční vegetací260121012
Kamenité suti nižších poloh1001
Skalní stepi na vápenci1101
Louky0604
Lesní okraje1204
Pastviny4003
Mokré louky3505
Těžební jámy0101
Dubohabřiny1001
Obhospodařované pozemky1001
Stojaté a pomalu tekoucí vody21603
 MalesFemalesJuvenilesRecords