Watt A D
Institute of Terrestrial Ecology, Bush Estate, EH26 OQB, Penicuik, Midlothian, Scotland.
Oecologia. 1987 Jun;72(3):429-433. doi: 10.1007/BF00377575.
Young Panolis flammea (Lepidoptera: Noctuidae) larvae were unable to survive on the mature (one-year old) needles of Pinus contorta and Pinus sylvestris. Larval growth and survival on the current year's shoots of the 2 pine host plants first incresed, and then decreased as pine shoot development progressed, the effect on survival being more marked at 10° C that 18° C. The survival of larvae on lodgepole pine on field-grown plants transferred to 10° C rose from 26% in March to 87% in mid May, and rose from 3% to 82% on Scots pine in the same period. Larval survival exceeded 70% for about 8 weeks on lodgepole pine and about 6 weeks on Scots pine, this period starting and ending earlier on lodgepole than on Scots pine. The nitrogen, water and phosphorus contents of both pines were at a maximum in May and decline gradually thereafter; the soluble tannin content showed a more complex pattern. These results are discussed in relation to the possible importance of phenological coincidence on the population dynamics of P. flammea with emphasis on its greater abundance on lodgepole pine in Scotland.
幼小的火焰夜蛾（鳞翅目：夜蛾科）幼虫无法在扭叶松和欧洲赤松成熟（一年生）的针叶上存活。在这两种松树寄主植物当年生嫩枝上，幼虫的生长和存活情况先是增加，然后随着松树枝条的发育而下降，在10℃时对存活的影响比18℃时更为显著。转移到10℃的田间生长的黑松上的幼虫存活率从3月的26%上升到5月中旬的87%，同期苏格兰松上的幼虫存活率从3%上升到82%。在黑松上，幼虫存活率超过70%约8周，在苏格兰松上约6周，这段时期在黑松上开始和结束的时间都比在苏格兰松上早。两种松树的氮、水和磷含量在5月达到最高，此后逐渐下降；可溶性单宁含量呈现出更复杂的模式。结合物候同步性对火焰夜蛾种群动态可能的重要性，特别是其在苏格兰黑松上数量更多的情况，对这些结果进行了讨论。
