Influence of photoperiod and temperature on developmental time and number of molts in nymphs of two species of Odonata
Influence of photoperiod and temperature on developmental time and number of molts in nymphs of two species of Odonata
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光周期和温度对两种蜻蜓若虫发育时间和蜕皮次数的影响
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
C. Jenner
中科院分区：
文献类型：
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作者：
B. R. Ingram;C. Jenner
于8月至3月在美国北卡罗来纳州采集褐豆娘（Enallagma hageni）和沙豆娘（Enallagma aspersum）的稚虫，分别在16°C和21°C条件下光照11和14 h。在长时间的条件下，发育通常完成得更快。在所有昼夜长度和温度条件下，从中期到羽化的发育时间从8月收集的若虫的最大值减少到3月收集的若虫的最小值。在21℃长光周期条件下，两种植物发育时间相似；短光周期对hageni生长的抑制作用大于对asperum生长的抑制作用。两种温度下hageni的光周期响应相似，仅在16°C时发育时间稍慢。而在16℃条件下保存的沙蚕若虫则没有光周期反应。在这两个物种中，滞育或延长发育主要发生在末期之前的两龄，而不是在末期本身。额外的蜕皮通常是…
Nymphs of the damselflies Enallagma hageni and Enallagma aspersum were collected in North Carolina from August to March and subjected to 11- and 14-h photoperiods at 16 and 21 °C. Development was generally completed more rapidly under long-day conditions. Under all day-length and temperature regimes, developmental time from the middle instars to emergence decreased from a maximum for those nymphs collected in August to a minimum for those collected in March. The two species had similar developmental times under long photoperiods at 21 °C; short photoperiods, however, were more inhibitory to the growth of E. hageni than to E. aspersum. The photoperiodic responses of E. hageni were similar at both temperatures, the developmental times being only slightly slower at 16 °C. In contrast, nymphs of E. aspersum kept at 16 °C showed no photoperiodic response. In both species, diapause or prolonged development occurred primarily in the two instars before the final, but not in the final itself.Extra molts usually ac...