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首页> 外文期刊>Limnology >Comparison of egg period, hatching rate, and first-instar nymphs among three species of stonefly
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Comparison of egg period, hatching rate, and first-instar nymphs among three species of stonefly

机译：三种石蝇的卵期，孵化率和初生若虫的比较

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摘要

Egg period was compared among several temperature conditions (11°C, 16°C, 20°C, 23°C) in Sweltsa sp., Stavsolus japonicus, and Isoperla aizuana (Plecoptera). The shortest mean egg incubation period was 27.8 days at 20°C in Sweltsa sp., 118.1 days at 16°C in Stavsolus japonicus, and 162.0 days at 20°C in Isoperla aizuana on average. Egg hatching rate was also the highest at the water temperature that provided the shortest egg incubation period. Based on laboratory data, eggs of Sweltsa sp. were considered to be deposited in May and hatched in June in the field. Thus, they must have spent the summer as nymphs in the field. Eggs of Stavsolus japonicus and Isoperla aizuana were considered to be deposited in April to May and hatched in September to October in the field. Visible eyes of Stavsolus japonicus and Isoperla aizuana appeared in August. It is likely that the long egg period of Stavsolus japonicus and Isoperla aizuana reflects that these two species spend the summer as dormant eggs in the field.
机译：在Sweltsa sp。，Stavsolus japonicus和Isoperla aizuana（Plecoptera）的几种温度条件下（11°C，16°C，20°C，23°C）比较了卵期。在Sweltsa sp。中，平均卵孵化最短时间为27.8天，在日本天牛（Stavsolus japonicus）中在16°C时平均孵化时间为118.1天，在美洲伊索白菜中20°C时平均孵化时间平均为162.0天。在水温下卵孵化时间最短的情况下，卵孵化率最高。根据实验室数据，Sweltsa sp。的卵。被认为是在5月沉积，并在6月在野外孵化。因此，他们一定在夏天以仙女的身份度过了这个夏天。据认为，日本Stavsolus japonicus和Isoperla aizuana的卵于4月至5月沉积，并于9月至10月在田间孵化。 8月出现了Stavsolus japonicus和Isoperla aizuana的可见眼睛。 Stavsolus japonicus和Isoperla aizuana的卵期较长可能反映出这两个物种在田间作为休眠卵度过了夏季。

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  • 来源
    《Limnology》 |2006年第2期|117-121|共5页
  • 作者

    Mayumi Yoshimura; Yu Isobe; Tadashi Oishi;

  • 作者单位

    Forest Biodiversity Group Kansai Research Center Forestry and Forest Products Research Institute 68 Nagaikyutaro Momoyama Fushimi Kyoto 612-0855 Japan;

    Faculty of Eco Liberal Arts Nara Bunka Women’s College Nara Japan;

    Kyousei Science Center for Life and Nature Graduate School of Human Culture Nara Women’s University Nara Japan;

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  • 正文语种 eng
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  • 关键词

    Egg period; Nymphal size; Egg hatching rate; Stonefly; Development; Dormancy;

    机译：卵期;若虫大小;卵孵化率;石蝇;发育;休眠;

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