Biological Characteristics of Hylyphantes graminicola under Laboratory Conditions
Objective] The aim was to study biological characteristics of Hylyphantes graminicola under laboratory conditions and explore the feasibility of Hylyphantes graminicola under laboratory conditions.[ Method] We observed the Hylyphantes graminicola’ s duration of F1 generation under different temperatures,the tolerence of 2nd-instar larva of Hylyphantes graminicola for hunger and drought,the predatory capacity of sub-a-dult fed with different feeds,the influence by fed with different feeds on the growth of sub-adult spiders,the duration of Hylyphantes graminicola F1 generation before spawning period and the egg number and hatching rate in lab rearing.[Result] The Hylyphantes graminicola’s duration was shortened with the increasing of temperature.The 2nd-instar larva to tolerence for hunger and drought was (8.94 ±2.79) days and (1.30 ± 0.57) days respectively,which was shorter than sub-adult and adult spiders’.The sub-adult spiders preyed two volume food,the weight of spiders growing faster fed by fly or cotton bollworm than by artificial diet .The F1 generation of the spiders laid about 4.85 times,the first egg-laying time started at (6.62 ±1.56) days after mating,then the spawning period became shorter.The hatching rate of F1 generation was 96.9%.[Conclu-sion] The lab rearing Hylyphantes graminicola is feasible.