+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Spectral sensitivity in insect calliphoro erythrocephala photoreceptors at a range of temperatures

, : Spectral sensitivity in insect calliphoro erythrocephala photoreceptors at a range of temperatures. Acta Physiologica Scandinavica Supplementum (537): 81-86

The function of the visual receptors of blowflies (Calliphora erythrocephala) was studied using intracellular recording techniques whereby the eye was kept at various temperatures below room temperature. Cooling reduced the response amplitude, decreased the time course and increased the latency. The Q10 [the change in the rate of a process when temperature is increased C] as calculated from different recordings and from various temperature steps was dependent both on the temperature range and the stimulation intensity, although more on the latter. From different kinds of spectral sensitivities of the receptor cells those with a double peak (UV and green) were studied with regard to the effect of the temperature change. A difference was found in the relative sensitivity change of the 2 peaks when the temperature was lowered. The sensitivity in UV remained enhanced in relation to green after cooling. The sensitizing pigment theory, according to which the double peaked spectral sensitivity is explained by assuming a photostable pigment transferring the energy to the photopigment, was supported. This support is valid if the UV sensitivity at room temperature is assumed to be higher, and is limited by the reduced energy transfer to the photopigment caused by the increased mobility of the sensitizing pigment.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006459859

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Gerlach, Justin; Muir, Catharine; Richmond, Matthew, D., 2006: The first substantiated case of trans-oceanic tortoise dispersal. In December 2004 an Aldabra giant tortoise Dipsochelys dussumieri was washed ashore on the coast of east Africa, probably having been carried off the shore of Aldabra atoll, 740 km away. Although transoceanic dispersal is assumed to be the mechan...

Valdiya K. S., 2005: Trans-Himadri Fault; tectonics of a detachment system in central sector of Himalaya, India. First recognized as the Malari Thrust Fault in northern Kumaun Himalaya in early seventies, as the South Tibetan Detachment System in southern Tibet adjoining northeastern Nepal in early eighties and as the Zanskar Shear Zone in northwestern Himac...

Prager, Anna E-mail:, 2005: Population estimates, trends and synchronised census of great bustard (Otis tarda) in Hungary. In Hungary, both range and population size of the Great Bustard have always been good indicators of environmental conditions. The species has often benefited from the ecological systems offered by agriculture. Landscape alteration (forest felling,...

Caselmann W.H.; Meyer M.; Hofschneider P.H.; Koshy R., 1990: Trans activation by hbv pres s sequences is mediated via nfkb and sp1 transcription factor binding sites. Hepatology 12(4 PART 2): 908

Krasznai, Attila G.; Bouwman, Lee H.; Dolmans, Dennis E.J.G.J.; Welten, Rob J.T.J.; Moll, Frans L., 2013: Minimally Invasive Vein Harvesting in Femoropopliteal Bypass Surgery Does Using an Old Technique Give New Perspectives? Short Report of Five Patients. Femoropopliteal bypass surgery is the most commonly performed type of peripheral bypass in vascular surgery. The great saphenous vein (GSV) is the preferred bypass conduit. Commonly used methods of GVS harvesting are related to morbidity, such as...

Palmer, Rg; Albertsen, Mc1; Johns, Cwo, 1983: Pollen movement to two male-sterile soybean mutants grown in two locations Glycine max. Journal of heredity 74(1): 55-57

Kartashov Ismael P.; Mayo Nestor A., 1972: Important geologic features in the upper Cenozoic of eastern Cuba. Academia de Ciencias de Cuba, Instituto de Geologia, Actas 1: 20-21

Bose, Bikash, 2003: Anterior cervical arthrodesis using DOC dynamic stabilization implant for improvement in sagittal angulation and controlled settling. Object: Placing instrumentation in the anterior cervical spine is a common procedure. The bi- and unicortical systems currently available, however, have distinct advantages and disadvantages. The author reports a prospective series in which a new...

Bennetts, H. W., 1958: Unthriftiness of weaner sheep in western Australia. Adequate supplementation of dry residues will induce good to optimum development, but it is not established whether the limiting factor is protein, energy, or both.

Shin, Y. W.; Solomon, T. E.; Walsh, J. H., 1998: Bioactivity and the mechanism of inhibitory action of C-terminally extended forms of secretin on gastric acid secretion in anesthetized rats. Gastroenterology 114(4 PART 2): A1180-A1181, April 15