What serial homologs can tell us about the origin of insect wings.

F1000Res

Department of Biology, Miami University, Pearson Hall, 700E High Street, Oxford, OH 45056, USA.

Published: March 2017

AI Article Synopsis

  • The origin of insect wings, a major mystery in biology, is debated between two main hypotheses: the tergal origin hypothesis and the pleural origin hypothesis, though there's little agreement on the specifics of wing development.*
  • Recent evolutionary developmental (evo-devo) studies have introduced the concept of "serial homology," offering new insights into how insect wings might have evolved.*
  • This review explores the implications of wing serial homologs and suggests future research directions to understand the developmental and genetic mechanisms behind the evolution of insect wings.*

Article Abstract

Although the insect wing is a textbook example of morphological novelty, the origin of insect wings remains a mystery and is regarded as a chief conundrum in biology. Centuries of debates have culminated into two prominent hypotheses: the tergal origin hypothesis and the pleural origin hypothesis. However, between these two hypotheses, there is little consensus in regard to the origin tissue of the wing as well as the evolutionary route from the origin tissue to the functional flight device. Recent evolutionary developmental (evo-devo) studies have shed new light on the origin of insect wings. A key concept in these studies is "serial homology". In this review, we discuss how the wing serial homologs identified in recent evo-devo studies have provided a new angle through which this century-old conundrum can be explored. We also review what we have learned so far from wing serial homologs and discuss what we can do to go beyond simply identifying wing serial homologs and delve further into the developmental and genetic mechanisms that have facilitated the evolution of insect wings.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5357031PMC
http://dx.doi.org/10.12688/f1000research.10285.1DOI Listing

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