Regional variations in agrobiont composition and agrobiont life history of spiders (Araneae) within Hungary

Agrobiont spider species are well adapted to arable systems, which have fairly uniform vegetation
structure and pest assemblages over continent-wide areas. We wanted to study, whether agrobiont spider subassemblages
an
Agrobiont spider species are well adapted to arable systems, which have fairly uniform vegetation
structure and pest assemblages over continent-wide areas. We wanted to study, whether agrobiont spider subassemblages
and the life history of the most prominent agrobiont, Pardosa agrestis, show any regional variation
within Hungary, where only modest climatic differences exist between the NW and SE parts of the country. We
studied agrobiont species of spider assemblages in 27 alfalfa and 21 cereal fields with suction sampling and
pitfalls. The similarity structure of these agrobiont sub-assemblages (Sørensen distance measure) was congruent
with the geographic distance matrices (Eucledian distance), as tested by Mantel tests. However, if we considered
sub-assemblages consisting of the non-agrobiont species, this congruency was always higher. Thus, agrobionts
responded only moderately to geographical variation if we compare them to non-agrobiont species. We studied
the generation numbers and the occurrence of the first adult individuals in P. agrestis; the most common agrobiont
spider in Hungary. This comparison involved comparing fields along a NW – SE gradient during 6 sampling years in
pairwise comparisons, where in each year a northern and a southern population was compared with a minimum
distance of 126 km in between. In generation numbers there was no difference; we found two generations across
Hungary. In contrast, the first occurrence of adult individuals was on average 15 days earlier in both generations
in the more southern populations. Thus, it can be concluded that agrobionts show a fairly stable and relatively
low magnitude response over country-sized geographical ranges.
show moreshow less

Export metadata

  • Export Bibtex
  • Export RIS

Additional Services

    Share in Twitter Search Google Scholar
Metadaten
Author:Ferenc Samu, Csaba Szinetár, Éva Szita, Kinga Fetykó, Dóra Neidert
URN:urn:nbn:de:hebis:30:3-266195
DOI:http://dx.doi.org/10.5431/aramit4012
ISSN:1081-4171
Parent Title (German):Arachnologische Mitteilungen
Publisher:Arachnologische Ges.
Place of publication:Nürnberg
Document Type:Article
Language:English
Date of Publication (online):2012/10/02
Year of first Publication:2011
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2012/10/02
Tag:Pardosa agrestis; alfalfa; biological control; climatic gradient
Volume:2011
Issue:40
Pagenumber:4
First Page:105
Last Page:109
Dewey Decimal Classification:590 Tiere (Zoologie)
595 Arthropoden (Gliederfüßer)
Sammlungen:Sondersammelgebiets-Volltexte
Zeitschriften / Jahresberichte:Arachnologische Mitteilungen, Heft 40 (2011)
Journal: Dazugehörige Zeitschrift anzeigen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

$Rev: 11761 $