Details

Autor(en) / Beteiligte

• Brammer, J.D
• Stein, P.J
• Anderson, R.A

Titel

Effect of light and dark adaptation upon the rhabdom in the compound eye of the mosquito

Ist Teil von

• The Journal of experimental zoology, 1978-01, Vol.206 (2), p.151-156

Ort / Verlag

New York: Wiley Subscription Services, Inc., A Wiley Company

Erscheinungsjahr

1978

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• During the first two hours of light adaptation rhabdom volume in compound eyes of adult mosquitoes is strikingly reduced. In females this involves a net loss of photoreceptor membrane of 500–700 μ2/cell/hour. Concurrently, numerous coated vesicles and multivesicular bodies appear in the cytoplasm adjacent the rhabdom. After longer illumination times (up to 5 hours) membrane loss averages considerably less, 220 μ2/cell/hour. Furthermore, puromycin experiments suggest that it is counter‐balanced by the formation of an equal amount of new membrane. Thus, despite substantial membrane turnover no net change in rhabdom volume takes place. When light‐adapted mosquitoes are dark adapted for 12 to 36 hours there occurs a net increase of rhabdom membrane averaging 75 μ2/cell/hour, and a corresponding increase in rhabdom volume.