Ancient trans-Atlantic flight explains locust biogeography: molecular phylogenetics of Schistocerca.

Proceedings. Biological Sciences
N R LovejoyR G Harrison

Abstract

The desert locust (Schistocerca gregaria) has been an important agricultural pest at least since biblical times. Although the ecology, physiology and behaviour of this insect species have been well characterized, its biogeographical origins and evolutionary history are more obscure. Schistocerca gregaria occurs throughout Africa, the Middle East and Western Asia, but all other species in the genus Schistocerca are found in the New World. Because S. gregaria has the capacity for extreme long-distance movement associated with swarming behaviour, dispersal may have played an important role in determining current distribution patterns. Some authors have argued that S. gregaria is the product of an eastward trans-Atlantic dispersal from North America to Africa; others consider it more likely that the New World taxa are the product of westward dispersal from Africa. Here, we present a mitochondrial DNA phylogeny of Schistocerca species that supports the monophyly of New World species (including the Galapagos endemic Halmenus) relative to S. gregaria. In concert with observed patterns of molecular divergence, and in contrast to previous morphological studies, our analysis indicates a single trans-Atlantic flight from Africa to South A...Continue Reading

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Citations

Jan 16, 2014·Nature Communications·Xianhui WangLe Kang
Mar 28, 2009·Biology Letters·Lindsey J GrayStephen J Simpson
Feb 2, 2008·BMC Evolutionary Biology·Marie-Pierre ChapuisYannis Michalakis
Aug 29, 2012·PloS One·Jan-Henning Dirks, David Taylor
Jun 3, 2006·Science·Daniel Grünbaum
Oct 5, 2014·Developmental and Comparative Immunology·Tewodros Firdissa DuressaRoger Huybrechts
Aug 14, 2012·Ecology Letters·Vishwesha GuttalIain D Couzin
Oct 28, 2016·Molecular Ecology·C J AndersonT K Walsh
Aug 16, 2011·Physiology·Hans-Joachim Pflüger, Carsten Duch
Oct 2, 2020·Molecular Ecology·Marie-Pierre ChapuisArnaud Estoup
Mar 23, 2021·Biological Reviews of the Cambridge Philosophical Society·Michael Heads, John R Grehan

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