...Maiko Abe; Takumi Kamiyama; Yasushi Izumi; Qingyin Qian; Yuma Yoshihashi; Yousuke Degawa; Kaori Watanabe; Yukako Hattori; Tadashi Uemura; Ryusuke Niwa ABSTRACT Organisms can generally be divided into two nutritional groups: generalists that consume various types of food and specialists that consume...

... phenotype to change in response to environmental change and variability ( Huey and Hertz,1984 ). Antarctic fish from high latitudes are often regarded as the archetypal thermal specialists ( Somero and DeVries, 1967 ; Wilson et al., 2002 ; Johnston,2003 ). However, the ability of P. borchgrevinki...

... between them. One species, Heliothis virescens (HV) has a broad host range, feeding on plants in at least 14 families. The other, Heliothis subflexa (HS), is a specialist on plants in the genus Physalis (Solanaceae). Experiments using synthetic foods showed that when the caterpillars were allowed to mix...