| thermal requirements of dermanyssus gallinae (de geer, 1778) (acari: dermanyssidae). | the thermal requirements for development of dermanyssus gallinae were studied under laboratory conditions at 15, 20, 25, 30 and 35 degrees c, a 12h photoperiod and 60-85% rh. the thermal requirements for d. gallinae were as follows. preoviposition: base temperature 3.4 degrees c, thermal constant (k) 562.85 degree-hours, determination coefficient (r(2)) 0.59, regression equation: y= -0.006035 + 0.001777x. egg: base temperature 10.60 degrees c, thermal constant (k) 689.65 degree-hours, determinat ... | 2008 | 18823573 |