Birds in Relation to a Grasshopper Outbreak in California Volume . 11

Birds in Relation to a Grasshopper Outbreak in California Volume . 11

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... This is particularly the case in the starved leech. Thigmotactic proclivities very materially affect, at times, the reactions of the animal to light. 27. The internal states of the leech exercise a profound influence upon its behavior. The chief effect of hunger and satiety seems to be that of altering the irritability of the animal; hunger producing a greater relative responsiveness; satiety, a tendency towards sluggishness. It is suggested that the presence of a superfluity of foodstuffs within the body leads to the accumulation of intermediate metabolic products which may react on the animal as do the fatigue substances. 28. The attempt in this paper on the modifiability of behavior in the leech has been to analyze, so far as possible, this behavior into its component physiological factors. In the opinion of the writer, such a method should lead to the kind of results most needed in the science of animal behavior. X. BIBLIOGRAPHY Adams, G. P. 1903. On the negative and positive phototropism of the earthworm, Allolobophora foetida (Sav.), as determined by light of different intensities. Amer. Journ. Physiol., 9, 26-34, 2 figs, in text. Allee, W. C. 1912. An experimental analysis of the relation between physiological states and rheotaxis in Isopoda. Journ. Exp. Zool., 13, 269344, 10 figs, in text. Apathy, S. 1888. Siisswasser Hirudineen. Zool. Jahrb. Syst., 3, 725-794. Beddard, P. E. 1896. "Hirudinea," in Cambr. Nat. Hist. (New York, Macmillan Co.), 2, 392408, 257 figs, in text. BlEDEBMANN, W. 1910. "Die Aufnahme, Verarbeitung und Assimilation der Nahrung, IV, Die Anneliden," in H. Winterstein's Handbnch der Vergleichenden Physiol. (Jena, Gustav Fischer), 1 and 2, pp. 540-602, 26 figs, in text. Bohn, G. 1907. Les...show more

Product details

  • Paperback | 152 pages
  • 189 x 246 x 8mm | 286g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236557093
  • 9781236557094