. Author manuscript; available in PMC: 2020 Jan 1.

Published in final edited form as: Int J Parasitol. 2018 Nov 15;49(1):37–47. doi: 10.1016/j.ijpara.2018.08.005

Table 2.

Definitions of constants used in the dynamic state variable model

Constant	Definition
N	Nymphal stage
A	Adult stage
x_min	Minimum lipid reserves (μg)
x_start	Starting lipid reserves (μg)
w_min	Minimum water reserves (μg)
w_max	Maximum water reserves (μg)
c_r	Daily energetic cost of resting (μg/day)
c_q	Daily energetic cost of questing (μg/day)
t	Final day of season
k_T	Transpiration water loss constant (μg/[hr*K²])
A_n, B_n	Water gain constants (μg/[hr*K], μg/hr)
a_w	Tick body water activity (RH/100)
CEA	Critical equilibrium activity (RH/100)
PT	Pump threshold (RH/100)
CCTT	Critical cuticle transition temperature (K)