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Studies on the Population Estimation for Insects of Medical Importance. : IV. A Method for the Estimation of the Relative Density of Culex tritaeniorhynchus summorosus Larvae in the Whole Paddy-Fields of an Area.
http://hdl.handle.net/10069/4093
http://hdl.handle.net/10069/40939580c765-3198-4159-89f2-2b254856943f
名前 / ファイル | ライセンス | アクション |
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tm13_02_05_t.pdf (559.4 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2006-04-26 | |||||
タイトル | ||||||
タイトル | Studies on the Population Estimation for Insects of Medical Importance. : IV. A Method for the Estimation of the Relative Density of Culex tritaeniorhynchus summorosus Larvae in the Whole Paddy-Fields of an Area. | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
著者 |
Wada, Yoshito
× Wada, Yoshito× Mogi, Motoyoshi× Nishigaki, Jojiro |
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著者別名 | ||||||
姓名 | 和田, 義人 | |||||
著者別名 | ||||||
姓名 | 茂木, 幹義 | |||||
著者別名 | ||||||
姓名 | 西垣, 定治郎 | |||||
その他のタイトル | ||||||
その他のタイトル | 衛生害虫の個体数の推定に関する研究 : IV.ある地域の水田全体のコガタアカイエカ幼虫の相対密度を推定する方法 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The estimation method of the relative density of Culex tritaeniorhynchus summorosus larvae in the paddy-fields of an area as a whole was investigated, based on the variances of transformed variate y=log (x+1) within and between paddy-fields, where x is the number of larvae per dip. As a result, it was shown that only one dip should be taken in each paddy-field, and instead, the number of paddy-fields examined should be increased, in order to estimate the relative density of larvae in the area in maximum efficiency. If one dip is taken in a paddy-field, the estimation precision becomes higher, of course, when the number of paddy-fields examined is increased. In the case of the same number of paddy-fields being examined, the higher the mean larval density is, the higher the estimation precision is. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 柄杓当りのコガタアカイエカ幼虫数xをy=log(x+1)式で変換した後に,水田内及び水田間の幼虫数の分散を求め,これを基として,ある地域全体に棲息する幼虫の相対密度を推定する方法を研究した.その結果,最も能率よく推定するには,1枚の水田でのすくいとり回数を1回とし,その代りに調査する水田数を増すのがよいことがわかった.その場合,調査水田数が多い程推定の精度は勿論高く,水田数が同じ場合には平均幼虫密度が高い程精度は高い. | |||||
書誌情報 |
熱帯医学 Tropical medicine 巻 13, 号 2, p. 86-93, 発行日 1971-06-30 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03855643 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00199644 | |||||
出版者 | ||||||
出版者 | 長崎大学熱帯医学研究所 | |||||
出版者別言語 | ||||||
Institute of Tropical Medicine, Nagasaki University | ||||||
sortkey | ||||||
P00086-P00093 | ||||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 熱帯医学 Tropical medicine 13(2). p86-93, 1971 |