草莓葉蟎之生態研究

羅幹成; 何琦琛; 曾信光; Paul K.C. Lo; C.C. Ho; C.K. Tseng

doi:10.29951/JARC.198409.0013

草莓葉蟎之生態研究

Other Title

An Ecological Study of Spider Mites on Strawberry in Taiwan

Journal

中華農業研究

Journal Volume

33

Journal Issue

3

Pages

337-344

Date Issued

1984-09-13

Date

1984-09-13

Author(s)

羅幹成

何琦琛

曾信光

Paul K.C. Lo

C.C. Ho

C.K. Tseng

DOI

10.29951/JARC.198409.0013

URI

https://scholars.tari.gov.tw/handle/123456789/13952

Abstract

本研究於民國67 年至70 年在本省苗栗縣大湖鄉完成三期作草莓葉蟎之生態研究。每週或隔週取樣調查，計發現6 種葉蟎為害草莓，其中以神澤葉蟎（Tetranychus kanzawai Kishida）和二點葉蟎（T. urticae Koch）最為重要，民國69 年以前，神澤葉蟎居優勢，70 年二點葉蟎棲群激增，取代神澤葉蟎之優勢地位。三年間，葉蟎棲群之增長均始於1 至2 月間，其棲群高峰期：67-68 年期作為4 月中旬，68-69 年期作為4 月上旬，69-7 年期作為3 月下旬，葉蟎類密度分別為225 , 444 及502 隻／複葉，此後棲群密度迅速下降至5 隻／複葉以下，同時發現葉蟎之天敵7 種，而以捕植蟎（Amblyseius spp. ）與小黑隱翅蟲（Oligota oviformis (Casey）為主要者，其棲群高峰出現於3 月上旬至4 月下旬問，但密度均低，甚少超出1 隻／複葉。總括而言，葉蟎棲群密度之增長及急速下降主要受雨量及相對濕度之影響，一種真菌病似為後期葉蟎密度驟降主因之一。 An ecological study of spider mites and their native predators was conducted on strawberry fields in Tahu, Miaoli, Taiwan with populations being survey at weekly intervals during 1979-81. Six spider mites i. e. Tetranychus kanzawai Kishida, T. urticae (Koch), T. cinnabarinus Boud., Panonychus citri (McGregor), Schizotetranychus sp. and Brevipalpus obovatus Donnadiu were found, and T. kanzawai and T. urticae were recognized as the dominant pests. From 1977 to 1980, kanzawai mite was the predominating species, but since 1981, the two-spotted spider mite had become the dominant one. Populations of the spider mites in those three years usually started to increase in the period of January to February and reached peaks of 225, 444, and 502/leaf on medium of April (1978-79), early of April(1979-80), and late of March (1980-81), respectively. The population then declined abruptly to less than 5 mites/leaf. Seven predators i. e. Oligota oviformis (Casey), Stethorus loi Sasaji, Arthrocnodax occidentalis Felt, Scolothrips sexmaculatus Pergande, Amblyseius spp., Cunaxa sp., and Ascid mites were present, Amblyseius spp. and Oligota oviformis were the dominant species. Their populations usually reached a peak of no more than 1/leaf between early March to late April. It was concluded that the mite populations on strawberry declined abruptly primarily due to the high precipitation, high relative humidity and a fungal disease.

Publisher

農業試驗所

Type

journal article

File(s)

Name

journal_arc_33-3-13.pdf

Size

1.66 MB

Format

Adobe PDF

Checksum

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