Effect of temperatures on the developmental period of Ips cembrae (Heer)(Coleoptera: Scolytidae). Suzuki, S. & Imada, H. Journal of the Japanese Forestry Society, 75(6):538–540, 1993.
abstract   bibtex   
Ips cembrae (HEER) has three larval instars. The head capsule widths of the tree instars were 0.56±0.03 (mean±SE), 0.75±0.04, and 1.04±0.06mm. The threshold temperature and the thermal constant for development from the egg to the adult stage were estimated to be 11.3°C and 243.3 day-degrees, respectively.
@article{suzuki_effect_1993,
	title = {Effect of temperatures on the developmental period of {Ips} cembrae ({Heer})({Coleoptera}: {Scolytidae})},
	volume = {75},
	issn = {0021-485X},
	abstract = {Ips cembrae (HEER) has three larval instars. The head capsule widths of the tree instars were 0.56±0.03 (mean±SE), 0.75±0.04, and 1.04±0.06mm. The threshold temperature and the thermal constant for development from the egg to the adult stage were estimated to be 11.3°C and 243.3 day-degrees, respectively.},
	number = {6},
	journal = {Journal of the Japanese Forestry Society},
	author = {Suzuki, Sigetaka and Imada, Hideki},
	year = {1993},
	pages = {538--540}
}
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