Spermophilus beecheyi

Deaths of nontarget species of birds after eating 1080-poisoned baits have been reported (Spurr 1979 Mcllroy 1984 Fry et al. 1986 Hegdal et al. 1986 Mcllroy et al. 1986a), although population effects have not yet been demonstrated. Birds of several species were found dead after 1080 baits were applied to kill California ground squirrels (Spermophilus beecheyi), but only Brewer s blackbird... 

Visual and olfactory stimuli contribute to anti-snake responses in mammals California ground squirrels, Spermophilus beecheyi, flag their tail and kick sand at a rattlesnake, C. viridis, more often than at a gopher snake, P. melanoleucus. The squirrels kicked sand at and approached a snake in a perforated transparent bag more frequently than one in an intact hag. Visual and chemical cues are important, but the latter seem to he the primary releasers (Henessy and Owings, 1979). 

Figure 7.17. Effects of pH on binding of phosphofructokinase (PFK) to myofibrils (open symbols dashed line) and interacting effects of pH and temperature on the self-assembly of PFK, as indexed by residual PFK activity (filled symbols solid lines). Binding of PFK to myofibrils was measured using PFK-con-taining supernatants and myofibrillar preparations from white locomotory muscle of the teleost Paralabrax nebulifer (Roberts et al., 1998). PFK self-assembly was studied using purified enzyme from a mammal (Spermophilus beecheyi) (Hand and Somero, 1983). The percent residual PFK activity after incubation for 60 min under different combinations of pH and temperature provides an estimate of the fraction of PFK that remains as catalytically active tetramers or aggregates of tetramers. (Figure from Somero, 1997.)...

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