3種類の採集方法による信州大学農学部構内のオサムシ科甲虫の種構成と季節変動
| Autor: | Suttiprapan, Piyawan, Nakamura, Hiroshi |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | 環動昆. 18(2):83-90 |
| ISSN: | 0915-4698 |
| Popis: | Field surveys were conducted in an experimental forest area on the campus of the Faculty of Agriculture, Shinshu University, in Nagano Prefecture from April to October 2005 to investigate the species composition of carabid beetles by using three sampling methods (pitfall trapping, light trapping and leaf litter-sieving) and to compare the data of the three sampling methods. A total of 1627 individuals comprising 39 species of carabid beetles were collected in the present study. The number of individuals caught by pitfall trapping (1454) was much greater than that by light trapping (51) or leaf litter-sieving (122). The species richness of the sample caught by leaf litter-sieving (21) was similar to that of the sample caught by pitfall trapping (26), but the species richness in the case of light trapping (13) was lower than that found with the other two methods. The dominant species caught by pitfall trapping were Carabus insulicola, Synuchus cycloderus and Leptocarabus procerulus, which together represented 84.7% (1231 individuals) of the total. The three most numerous species caught by light trapping and leaf litter-sieving were Harpalus griseus, Dromius prolixus and Asaphidion semilucidum, representing 70.6% (36 individuals) of the total, and Amara congrua, H. griseus and Harpalus tridens, representing 63.1% (77 individuals) of the total, respectively. Subfamilies of Carabinae, Pterostichinae and Callistinae were mainly found in the pitfall trapping sample, whereas Lebiinae were captured mostly by light trapping. In the leaf litter-sieving sample, the frequently caught subfamilies were Zabrinae and Harpalinae. Pianka's similarity index showed that the species composition of pitfall trapping was not similar to those of light trapping and leaf litter sieving. We discuss here the use of these three sampling methods. 信州大学農学部構内の演習林において, 2005年4月から10月にかけて, 3種類の採集方法(ピットフォールトラップ, ライトトラップ, ザルふるい法)によってオサムシ科甲虫の種構成と季節変動を調査し, これらの方法によって得られた結果を比較した. 3つの採集方法で合計39種1627個体のオサムシ科甲虫が採集された. ピットフォールトラップによる採集個体数(1454)が, ライトトラップ(51)やザルふるい法(122)よりはるかに多かった. ザルふるい法による種数(21)はピットフォールトラップ(26)とあまり変わらなかったが, ライトトラップの種数(13)は少なかった. ピットフォールトラップの優占種は, アオオサムシCarabus insulicola, クロツヤヒラタゴミムシSynuchus cycloderus, クロナガオサムシLeptocarabus prorocerulusで, 捕獲個体の84.7%(1231個体)を占めた. ライトトラップでは, ケウスゴモクムシHarpalus griseus, ホソアトキリゴミムシDromius prolixus, メダカチビカワゴミムシAsaphidion semilucidumで, 捕獲個体の70.6%(36個体)を占めた. ザルふるい法では, ニセマルガタゴミムシAmara congruo, ケウスゴモクムシ, コゴモクムシHarpalus tridensで, 捕獲個体の63.1%(77個体)を占めた. オサムシ亜科, ナガゴミムシ亜科, アオゴミムシ亜科の種はピットフォールトラップで多く捕獲され, アトキリゴミムシ亜科はライトトラップ, マルガタゴミムシ亜科とゴモクムシ亜科はザルふるい法で多かった.ピットフォールトラップによって採集されたサンプルと他の2つの採集方法のサンプルとの類似度(a)は極めて低かった. これらの結果をもとに3つの採集方法の用い方について検討した. Article 環動昆 18(2): 83-90 (2007) |
| Databáze: | OpenAIRE |
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