+ 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 mechanisms of the compound eye in the firefly photinus pyralis coleoptera lampyridae

, : Spectral mechanisms of the compound eye in the firefly photinus pyralis coleoptera lampyridae. Journal of Comparative Physiology A Sensory Neural & Behavioral Physiology 35(1): 21-28

Electroretinograms (ERG) were recorded from dark- and chromatic-adapted compound eyes in the dusk-active firefly, P. pyralis .male., at different wavelengths ranging from 320-700 nm and over 4.5 log units change in stimulus intensity. ERG waveforms differed in the short (near-UV and violet) and long (yellow) wavelengths. Wave form differences were quantitated by analysis of rise and fall times as a function of the amplitude of the response. Rise times were relatively constant for all stimulus wavelengths. Variations in the fall times were detected and followed characteristically different functions for short and long wavelengths. No significant differences in the slopes of the V-logI curves at different stimulus wavelengths were observed. Spectral sensitivity curves obtained from the ventral sector in dark- and chromatic-adapted conditions revealed peaks in the short (.lambda.max 400 nm, .lambda.max 430 nm, and .lambda.max 380 nm) and long (.lambda.max 570 nm) wavelengths, suggesting the presence of 2 spectral mechanisms. The long wavelength (yellow) mechanism was in close tune with the species bioluminescence emission spectrum.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006459730

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

Ruyet, J. P. L.; Pichavant, K.; Vacher, C.; Bayon, N. le; Severe, A.; Boeuf, G., 2002: Effects of O2 supersaturation on metabolism and growth in juvenile turbot (Scophthalmus maximus L.). Effects of O2 supersaturation on metabolism and growth were studied in juvenile turbot (Scophthalmus maximus L.). When fish were reared for 30 days in water containing O2 at 147% or 223% air saturation, there were no significant differences in foo...

Pagliosa, G. M.; Alves, G. E. S.; Oliveira, H. P.; Gheller, V. A.; Braga, C. E-, 2004: Doenca periapical em equinos: estudo de quatro casos. Four cases of periapical disease (PC) in equines submitted to apicoectomy and dental extraction were studied The diagnosis was based on anamnesis, physical and oral examination and radiology. The apicoectomy. was not effective due of the lack of e...

Gasanov, Ralphreed; Aliyeva, Samira; Arao, Sachiko; Ismailova, Aygun; Katsuta, Nobuhiro; Kitade, Hidetoshi; Yamada, Shuji; Kawamori, Asako; Mamedov, Fikret, 2007: Comparative study of the water oxidizing reactions and the millisecond delayed chlorophyll fluorescence in photosystem II at different pH. Water splitting activity, the multiline EPR signal associated with S-2-state of the CaMn4-cluster and. the fast and slow phases of the induction curve of the millisecond delayed chlorophyll fluorescence from photosystem II (PSII) in the pH range...

Gidijala, Loknath; Van-Der-Klei, Ida-J; Veenhuis, Marten; Kiel, Jan-Akw, 2007: Reprogramming Hansenula polymorpha for penicillin production: expression of the Penicillium chrysogenum pcl gene. We aim to introduce the penicillin biosynthetic pathway into the methylotrophic yeast Hansenula polymorpha. To allow simultaneous expression of the multiple genes of the penicillin biosynthetic pathway, additional markers were required. To this e...

Lamborot, M., 1998: Latitudinal karyotypic variation in Liolaemus monticola in Chile. Cytogenetics & Cell Genetics 81(2): 130

Hunt, Edward L.; Phillips, Richard D.; Kimeldorf, Donald J., 1962: Evidence of a prompt behavioral response to ionizing radiation in the male rat. Fed Proc 21(2): 421

Bajaj, B. K.; Agarwal, M. P.; Ram, B. Krishna, 2003: Autonomic neuropathy in patients with hepatic cirrhosis. Background: Autonomic neuropathy has been reported in patients with alcoholic liver disease but information on its occurrence in patients with non-alcoholic liver disease is contradictory. Aim: To assess autonomic functions in patients with alcoho...

Kopan, R.; Lee, J.; Lin, M. H.; Syder, A. J.; Kesterson, J.; Crutchfield, N.; Li, C. R.; Wu, W.; Books, J.; Gordon, J. I., 2002: Genetic mosaic analysis indicates that the bulb region of coat hair follicles contains a resident population of several active multipotent epithelial lineage progenitors. The hair follicle represents an excellent model system for exploring the properties of lineage-forming units in a dynamic epithelium containing multiple cell types. During its growth (anagen) phase, the proximal-distal axis of the mouse coat hair...

Rana S.V.S.; Kumar A., 1979: Enzyme modification in rat kidney after individual and combined treatments with molybdenum and copper. The topography of a few enzymes (alkaline phosphatase, acid phosphatase, 5-nucleotidase and lipase) in the kidney of albino rat, Rattus rattus after individual and combined treatments with Mo and Cu is reported. Mo intake altered enzyme activities...

Macdonald E.M.S.; Morris R.O., 1983: Rapid single pass isolation of analytically pure plant hormones by immuno affinity chromatography. Plant Physiology (Rockville) 72(SUPPL 1): 26