Report of the Laguna Marine Laboratory and Contributions from the Zoological Laboratory of Pomona College Volume 5

Report of the Laguna Marine Laboratory and Contributions from the Zoological Laboratory of Pomona College Volume 5

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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. 1917 edition. Excerpt: ... inch. Fig. 1 shows this tunnel and the rate of progress. It seemed to be a typical case. I have known one tunnel to be several weeks under construction. Their average length is from four to six inches. Those of greater distance, I think, are the result of more than one season_s work, having been lengthened from year to year. While digging, the bee slowly turns in the burrow, requiring from thirty minutes to an hour to complete the cycle. Observation showed no regularity or uniformity either in rate or direction of turning. I have never found orpifex except in reasonably large aggregations. If some adventurous female begins work in a new locality, that locality is sought out by others until almost every available timber is honey-combed with tunnels. From one surface entrance there are usually several tunnels leading away. Figs. 8 and 9 are typical in this respect. This habit doubtless serves well in the reduction of labor and also reduces the danger from enemies. A third advantage gained is the mutual protection against changes of temperature during the winter, for I found these tunnels, on cold days, literally packed full; in many cases two rows of bees lying side by side in the same tunnel. Other than the points mentioned I find no hint of true community life. Males and females are about equal in number, and in the rearing of young they behave as other solitary bees so far as I am able to learn. No food is stored for winter but on warm days they come forth in search of food, a temperature of about 20 deg. to 21 deg. C. being sufficient to invite them out. Life History: I-Iaving finished her tunnel the female begins to provision it with bee-bread which she makes from pollen and regurgitated nectar. After accumulating a mass about as large as her...
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Product details

  • Paperback | 44 pages
  • 189 x 246 x 2mm | 95g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236633113
  • 9781236633118