Meny

Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Visual summation in night-flying sweat bees: A theoretical study

Författare:
Publiceringsår: 2006
Språk: Engelska
Sidor: 2298-2309
Publikation/Tidskrift/Serie: Vision Research
Volym: 46
Nummer: 14
Dokumenttyp: Artikel
Förlag: Elsevier Science Ltd.

Sammanfattning

Bees are predominantly diurnal; only a few groups fly at night. An evolutionary limitation that bees must overcome to inhabit dim environments is their eye type: bees possess apposition compound eyes, which are poorly suited to vision in dim light. Here, we theoretically examine how nocturnal bees Megalopta genalis fly at light levels usually reserved for insects bearing more sensitive superposition eyes. We find that neural summation should greatly increase M. genalis's visual reliability. Predicted spatial summation closely matches the morphology of laminal neurons believed to mediate such summation. Improved reliability costs acuity, but dark adapted bees already suffer optical blurring, and summation further degrades vision only slightly. (c) 2006 Elsevier Ltd. All rights reserved.

Disputation

Nyckelord

  • Biology and Life Sciences
  • halictid bees
  • neural summation
  • nocturnal vision
  • noise
  • apposition compound eyes

Övriga

Published
Yes
  • Lund Vision Group
  • ISSN: 0042-6989

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen