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Ice nuclei in soil compromise cold hardiness of hatchling painted turtles, Chrysemys picta.
Hatchling painted turtles (Chrysemys picta) commonly overwinter within their natal nests and survive exposure to temperatures as low as -12 degrees C by supercooling. We report that the supercooling capacity of hatchling ...
Low temperature acclimation in the desert spider, Agelenopsis aperta.
Agelenopsis aperta (Gertsch) inhabits desert grasslands and lava beds in the southwestern U.S.A. The capacity of this species to cold-harden was assessed by exposing second generation laboratory- reared specimens to an ...
Inoculative freezing and the problem of winter survival for freshwater macroinvertebrates
Due to the thermal buffering of their environment, aquatic invertebrates are less likely than their terrestrial counterparts to face temperatures substantially below 0°C. Aquatic invertebrates may not be able to avoid ...
Cold-hardiness in the Antarctic tick, Ixodes uriae.
Ixodes uriae White (Ixodidae, Acarina) is the predominant tick on the Antarctic peninsula.This species has a circumpolar distribution in both hemispheres and is associated with or known to parasitize 48 species of seabirds. ...
Cold-shock injury and rapid cold-hardening in the flesh fly, Sarcophaga crassipalpis.
Direct exposure to -10 C, in the absence of tissue freezing, causes high mortality
in Sarcophaga crassipalpis: this result suggests that injury is due to cold shock. However, brief acclimation at 0 C enables larvae, ...
Using microrespirometers to measure oxygen consumption by insects and small invertebrates.
A variety of physiological studies require the measurement of oxygen consumption. Unfortunately, the techniques for measuring respiration rate often require expensive equipment or difficult procedures that are not available ...
Topical application of ice-nucleating-active bacteria decreases insect cold tolerance
The majority of overwintering insects avoid lethal freezing by lowering the temperature at which ice spontaneously nucleates within their body fluids. We examined the effect of ice-nucleating-active bacteria on the ...
Cold-hardiness of a laboratory colony of lone star ticks.
The cold-hardiness of a lone star tick, Ambylomma americium (L.) laboratory colony was characterized. Fed and unfed larvae, fed and unfed nymphs, and unfed adults did not survive exposure to -17C for 7 d. After an 8-d ...
Do bot flies, Cuterebra (Diptera: Cuterebridae), emasculate their hosts?
Asa Fitch, in his description of a new species of
Cuterebra that he named, "emasculator," was the first to suggest
that bot flies castrated their mammalian hosts. In recent years
several major review papers and parasitology ...
Adaptations of frogs to survive freezing
Five species of frogs from North America survive extensive freezing of their body fluids to temperatures as low as -8C for periods lasting at least 2 weeks. These frogs hibernate in leaf litter where subzero temperatures ...