✦ LIBER ✦

Insect development. IV. External morphology of grasshopper embryos of known age and with a known temperature history

✍ Scribed by Eleanor H. Slifer

Publisher: John Wiley and Sons
Year: 1932
Tongue: English
Weight: 708 KB
Volume: 53
Category: Article
ISSN: 0362-2525
DOI: 10.1002/jmor.1050530102

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✦ Synopsis

Abstract

Eggs of Melanoplus differentialis, a grasshopper, secured immediately after they had been laid, were placed in a water bath kept at 25°C, and allowed to develop for definite periods. After fixation, the embryos were dissected out of the eggs and drawn. Large numbers of eggs were examined in order to determine the degree of variation under specific conditions. For the stages following revolution, eggs were used in which ‘hibernation’ had been prevented by exposure to low temperatures.

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Insect development. VII. Early stages in

Insect development. VII. Early stages in the development of grasshopper eggs of known age and with a known temperature history

✍ Eleanor H. Slifer; Robert L. King 📂 Article 📅 1934 🏛 John Wiley and Sons 🌐 English ⚖ 400 KB 👁 1 views

## Abstract The rate of maturation and of development during the first 4 days has been followed in Melanoplus differentialis eggs (from mated females) collected (1) just before they were laid, or (2) immediately after oviposition had been completed and (1) either fixed at once, or (2) after incubat