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Morphogenetic functions of extraembryonic membranes in insects
Urs Schmidt-Ott1, Chun Wai Kwan1
1University of Chicago, Dept. of Organismal Biology and Anatomy, Cummings Life Science Center, 920 East 58th Street, Chicago, IL 60637, USA.
Current Opinion in Insect Science
|July 21, 2016
Summary
Insect embryonic membranes like the amnioserosa and amnion play key roles in development. This review highlights their morphogenetic functions and proposes new hypotheses on their roles in insect embryogenesis.
Area of Science:
- Developmental biology
- Evolutionary developmental biology
- Insect morphology
Background:
- The amnioserosa, serosa, amnion, and yolk sac are crucial embryonic membranes in insects.
- Their specific morphogenetic functions are essential for proper embryonic development and hatching.
Purpose of the Study:
- To review and synthesize recent findings on the morphogenetic roles of insect embryonic membranes.
- To propose novel hypotheses regarding the functions of the amnioserosa, amnion, and yolk sac in insect embryogenesis.
Main Methods:
- Literature review of recent studies on insect embryogenesis.
- Comparative analysis of embryonic membrane functions across different insect species (flies, beetles, hemipterans).
Main Results:
- The amnioserosa in Drosophila and the dorsal amnion in other flies may share similar functions.
- The amnion likely dictates serosa rupture sites, facilitating embryo emergence and dorsal closure.
- The yolk sac is proposed as a significant factor in insect morphogenesis.
Conclusions:
- Insect embryonic membranes exhibit diverse yet coordinated morphogenetic roles.
- Further research into the amnion-serosa interaction and yolk sac function is warranted.
- Comparative studies are vital for understanding the evolution of insect embryonic development.
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