EMERGENCE OF CADDISFLIES (TRICHOPTERA) AND MAYFLIES (EPHEMEROPTERA) FROM HEMING LAKE, MANITOBA
EMERGENCE OF CADDISFLIES (TRICHOPTERA) AND MAYFLIES (EPHEMEROPTERA) FROM HEMING LAKE, MANITOBA
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马尼托巴省赫明湖中石蛾（毛翅目）和蜉蝣（蜉蝣目）的出现
DOI：
10.4039/ent104173-2
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发表时间：
1972
影响因子：
0.9
通讯作者：
G. Lawler
中科院分区：
文献类型：
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作者：
J. Flannagan;G. Lawler
摘要 1967 年 6 月 2 日至 9 月 7 日期间，在多种基质类型和 0.9 至 5.5 m 水深范围内放置了 49 个 0.1 m2 的浮水诱集器，收集了 979 只石蛾和 195 只蜉蝣。石蛾的羽化仅限于 6 月 24 日至 8 月 27 日期间，蜉蝣的羽化时间为 7 月 2 日至 30 日。石蛾的性别比例显示，几乎在所有情况下，收集到的石蛾都以雌性为主，没有收集到雄性 Neureclipsis bimaculatus (Linn.) 和 N. validus Walk。大多数石蛾表现出对特定深度和/或基质类型的偏好。少量大量存在且分布在相当广泛的深度范围内的石蚕表明，深度分布（温度）与羽化时间之间存在关系，热量可能既参与了成熟速率的控制，又作为实际羽化的释放剂。雄性 Stenonema interpunctatum canadense (Walker) 在雌性之前约 5 天出现高峰羽化，并且数量也比雌性多约 3:1。对于任何蜉蝣物种来说，深度分布和出现时间之间似乎不存在任何关系。然而，Caenis forcipata (McD.)这一物种的出现可能与天气条件有关。
Abstract Forty-nine 0.1 m2 emergence traps positioned over several substrate types and a range of water depths 0.9 to 5.5 m, from 2 June to 7 September 1967, collected 979 caddisflies and 195 mayflies. The caddisfly emergence was restricted to the period 24 June −27 August, and mayfly emergence to the period 2–30 July.The sex ratio for the caddisflies showed, in almost every case, a preponderance of females and no male Neureclipsis bimaculatus (Linn.) and N. validus Walk, were collected. Most of the caddisflies showed preference for a particular depth and/or substrate type. The few caddisflies which were present both in large numbers and distributed over a fairly wide depth range indicated that there is a relationship between depth distribution (temperature) and emergence time, heat perhaps being involved both in control of rate of maturation and as a releasing agent for the actual emergence.Male Stenonema interpunctatum canadense (Walker) showed peak emergence about 5 days before the females and also outnumbered the females by about 3:1. No relationship seemed to exist between depth distribution and emergence time for any of the mayfly species. However, the emergence of one species, Caenis forcipata (McD.) may be related to weather conditions.