Effect of temperature, relative humidity and photoperiod on embryonic development and egg hatch of Pirata piraticus

Abstract

Abstract: In this paper,the effects of temperature, relative humidity, photoperiod on embryonic development, egg hatch of Pirata piraticus were investigated. Temperature affected not only the whole course of embryonic development, but also its different phases.At 20℃～35℃, as temperature increased, the embryonic development became faster. The developmental threshold of egg was estimated to be at 11.9℃. The uniform degree of egg hatch was higher at low temperature,while the highest hatching rate was happened at 28℃.In order to study the factors affecting embryonic development, to determine the optimum condition for egg hatch, experiments were arranged by quadratic regression rotation composite design with three factors: temperature (X₁) ,relative humidity (X₂), photoperiod (X₃) .Three models were built up,and the factors affecting the embryonic development were analyzed. After calculating the hatching rate using the model of hatching rate by computer, the optimum condition for egg hatch of the spider was given:temperature 27℃～28.5℃, relative humidity 94%～97%,, photoperiod 14～17h.

CLC Number:

Q968

PENG Yu, ZHAO Jingzhao, HU Cui . Effect of temperature, relative humidity and photoperiod on embryonic development and egg hatch of Pirata piraticus[J]. Chinese Journal of Applied Ecology, 2001, (1): 95-98.

References

[1] Buczek A. 1993. Effect of temperature, relative humidity on embryonic development, egg hatch of Hyalomma marginatum Koch (Acari: Ixodidae). Anzeiger fur Schadlingskunde, Pflanzenschutz, Umweltschutz, 66(1):6～9
[2] Chen A-G (陈安国), Feng W-X (冯维熊), Chen Zh-H (陈志辉) al. 1965. Effect of high temperatures on the development, reproduction of the armyworm, Leucania separata Walker I. Development, hatching of the eggs. Acta Ent Sin (昆虫学报), 14(3):225～237 (in Chinese)
[3] Chen W-H (陈文华), Zhao J-Zh (赵敬钊). 1990. Research on the on togeny, fecundity of Pardosa astrigera under different tempera tures. In: Zong L-B (宗良炳) ed. Proceedings of Research on Insects. Beijing:Beijing Agricultural University Press. 98～102(in Chinese)
[4] Downes MF. 1988. Hatching, early post-embryonic development in three spiders, at four temperatures. Bull Br Archnol Soc, 7:204～208
[5] Foelix RE. 1982. Biology of Spiders. Combridge Mass: Harvard University Press.
[6] Group of Biological Control, Dept. of Plant Protection, Southwest Agri cultural College (西南农学院植保系生防组). 1980. Preliminary studies on biological, ecological characteristic of Hylyphantes graminicola. Nat Enemies Insect (昆虫天敌), 22(3):5～14(in Chi nese)
[7] Li D-M (李典谟), Wang M-M (王莽莽). 1986. Study on rapid estima tions of development threshold temperature, effective accumulated heat. Ent Knowledge (昆虫知识), 23(4):184～187(in Chinese)
[8] Li DQ, Jackson RR. 1996. How temperature affects development, reproduction in spiders: A review. J Therm Biol, 21(4):245～274
[9] Peck WB, Whitcomb WH.1970. Studies on the biology of a spider,Chiracanthium inclusum (Hentz). Ark Agric Expt Sta Bul, 1:753
[10] Suzuki H, Kondo A.1995. Early embryonic development including germ disk stage, in the theridiid spider Achaearanea japonica(Bos.et Str.).J Morph, 224:147～157
[11] Tang Q-Y (唐启义), Feng M-G (冯明光). 1997. Practical Statistical Analysis, Computer Data Processing System. Beijing: China Agriculture Press. (in Chinese)
[12] Weese AO. 1924. Animal ecology of an Illinois elm-maple forest Ⅲ.Biol Monog, 9:1～93
[13] Xiao B (萧兵), Zhong J-W (钟俊维). 1985. Experiment Devices, Statistical Analyses with Many Factors in Agriculture. Changsha: Hunan Science, Technology Press. (in Chinese)
[14] Zhao J-Zh (赵敬钊), Liu F-X (刘凤想). 1982. Studies on the biology, population fluctuations of Erigonioium graminicola (Araneae: Linyphiidae).Acta Zool Sin (动物学报), 28(3):271～282(in Chi nese)
[15] Zhao J-Zh (赵敬钊). 1987. Effect of temperature on the ontogeny, fecundity of Pirata tenuistaceus(Araneae: Lycosidae). Acta Zool Sin (动物学报), 33(4):367～371(in Chinese)