Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Seasonal migration to high latitudes results in major reproductive benefits in an insect

In English

Författare

  • Jason W. Chapman
  • James R. Bell
  • Laura E. Burgin
  • Donald R. Reynolds
  • Lars Pettersson
  • Jane K. Hill
  • Michael B. Bonsall
  • Jeremy A. Thomas

Summary, in English

Little is known of the population dynamics of long-range insect migrants, and it has been suggested that the annual journeys of billions of nonhardy insects to exploit temperate zones during summer represent a sink from which future generations seldom return (the “Pied Piper” effect). We combine data from entomological radars and ground-based light traps to show that annual migrations are highly adaptive in the noctuid moth Autographa gamma (silver Y), a major agricultural pest. We estimate that 10–240 million immigrants reach the United Kingdom each spring, but that summer breeding results in a fourfold increase in the abundance of the subsequent generation of adults, all of which emigrate southward in the fall. Trajectory simulations show that 80% of emigrants will reach regions suitable for winter breeding in the Mediterranean Basin, for which our population dynamics model predicts a winter carrying capacity only 20% of that of northern Europe during the summer. We conclude not only that poleward insect migrations in spring result in major population increases, but also that the persistence of such species is dependent on summer breeding in high-latitude regions, which requires a fundamental change in our understanding of insect migration.

Publiceringsår

2012

Språk

Engelska

Sidor

14924-14929

Publikation/Tidskrift/Serie

Proceedings of the National Academy of Sciences

Volym

109

Issue

37

Dokumenttyp

Artikel i tidskrift

Förlag

National Academy of Sciences

Ämne

  • Ecology

Nyckelord

  • windborne migration
  • source-sink dynamics

Status

Published

Forskningsgrupp

  • Biodiversity and Conservation Science

ISBN/ISSN/Övrigt

  • ISSN: 1091-6490