Get Advances in Insect Physiology, Vol. 16 PDF

By M.J. Berridge, J.E. Treherne, V.B. Wigglesworth (Eds.)

ISBN-10: 0120242168

ISBN-13: 9780120242160

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J. exp. Biol. 37, 186212 Clark, J. , Cena, K. and Mills, N. J . (1973). Radiative temperatures of butterfly wings. 2. angew. Entomol. 73, 327-332 Clench, H. K. (1966). Behavioural thermoregulation in butterflies. Ecology 47, 1021-1034 Cloudsley-Thompson, J. L. (1956). Studies in diurnal rhythms. VI. Bioclimatic observations in Tunisia and their significance in relation to the physiology of the fauna, especially woodlice, centipedes, scorpions and beetles. Ann. Mag. Nat. Hist. 9, 305-329 Cloudsley-Thompson, J.

1 Water balance - Controlling factors As with body temperature T,, a number of features of the insect itself and of its behaviour will affect its water content W, in relation to its environment. In some cases these controlling factors are the same, since thermal and osmotic problems are so intimately linked, but the particular effects of each variable may be rather different. (a) Size and shape The difficulty of maintaining W, for an insect is essentially related to the properties of its exposed surfaces, and hence the parameters of surface area, shape and size are critical to the loss of water and in turn to the degree of microclimatic control necessary.

The dragonflies Austrolestes (Veron, 1973) and Diphlebia (O’Farrell, 1963) may both be mainly pale blue or dark, and Tb rises faster if the latter colour is adopted (O’Farrell, 1963). Certain grasshoppers (Key and Day, 1954) and beetles (Hadley, 1979) show a similar effect. In each of these cases, microclimate seems to have a direct triggering effect, and for some of the insects which change colour humidity would appear to be the most important causative factor (Rowell, 1971; Hadley, 1979). Seasonal changes in colouration in insects such as aphids may be similarly linked to the weather (Dixon, 1972).

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Advances in Insect Physiology, Vol. 16 by M.J. Berridge, J.E. Treherne, V.B. Wigglesworth (Eds.)

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