Referenţi ştiinţifici - Muzeul Judeţean Satu Mare

Satu Mare – Studii şi Comunicări Ştiinţele Naturale -– Vol. VI (2005)
Fig. 6: The similarity of the staphylinids by the geographical regions (ratio scale data, for dominant species, Hor).
Explanation: see Fig. 1
Discussions
Faunistical studies
During the survey, a total number of 7214
specimens belonging to 257 species were collected with
pitfall traps. Almost 22% of the Hungarian Staphylinid
fauna can be collected in Hungarian apple and pear
orchards. Altogether twenty species presented various
relative abundances between the years, varied from 2%
to 8% and these accounted for 56% of all staphylinids
recorded in Hungarian apple and pear orchards. They
were: Dinaraea angustula, Omalium caesum, Drusilla
canaliculata, Sphenoma abdominale, Palporus nitidulus, Dexiogya
corticina, Xantholinus linearis, Coprochara bipustulata, Mocyta
orbata, Oligota pumilio, Platidracus stercorarius, and
Xantholinus longiventris
Most of the species mentioned in this study have
been recorded as frequent in agricultural field by other
authors throughout Western-Europe (Galli 1985, Reede
1985; Denis et al, 1990, Denis, 1991; Majzlan and
Holecová, 1993; Wardle et al, 1993; Heyer, 1994; Booij
et al., 1997; Knopp, 1997; Krooss and Schaefer, 1998;
Andersen, 2000; Perner and Malt, 2002).
The similarity studies
The similarity studies of the staphylinid
communities in differently treated apple orchards,
considering the binary dates (Jaccard index) and the
ratio scale dates (Horn log 10) shoves that the species
composition in conventionally treated and in
abandoned orchards were similar and the forming
structure of species composition are highly influenced
by the regions and less influenced by the pest
management methods. The forming dominance (Horn)
of the staphylinid species are also highly influenced by
the geographical regions.
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Conclusions
The abundance of the Staphilinid beetle in orchards is
deeply influenced by the insecticide overtaking.
The similarity of the staphylinid communities are
more influenced by geographical regions (climate,
precipitation, vegetation structure) than the chemical pest
management control.
The community structures of the staphylinids are
similar in high input insecticides and in abandoned
orchards.
Acknowledgement
The authors are grateful to László Ádám for
identifying the species in Aleocharinae subfamilies and to
Dr. Claire Levesque for critical reviews of the manuscript.
The work was funded by Hungarian Research Fund
(OTKA No. 023885).
References
Ádám, L. 1996 a. Staphylinidae (Coleoptera) of the Bükk
National Park. The Fauna of the Bükk National Park,
231-257.
Ádám, L. 1996 b. The species of Staphylinidae from
Őrség (Coleoptera). Savaria, Szombathely, 1-25.
Ádám, L., Hegyessy, G. 2001. Adatok a Zemplénihegység,
a Hernád-völgy, a Bodrogköz, a Rétköz és a
Taktaköz holyvafaunájához (Coleoptera). A
sátoraljaújhelyi Kazinczy Ferenc Múzeum Füzetei V.
Sátoraljaújhely, 249.