Document Detail

Comparative visual function in predatory fishes from the Indian river lagoon.
MedLine Citation:
PMID:  23629879     Owner:  NLM     Status:  In-Data-Review    
Abstract Visual temporal resolution and spectral sensitivity of three coastal teleost species (common snook [Centropomus undecimalis], gray snapper [Lutjanus griseus], and pinfish [Lagodon rhomboides]) were investigated by electroretinogram. Temporal resolution was quantified under photopic and scotopic conditions using response waveform dynamics and maximum critical flicker fusion frequency (CFFmax). Photopic CFFmax was significantly higher than scotopic CFFmax in all species. The snapper had the shortest photoreceptor response latency time (26.7 ms) and the highest CFFmax (47 Hz), suggesting that its eyes are adapted for a brighter photic environment. In contrast, the snook had the longest response latency time (36.8 ms) and lowest CFFmax (40 Hz), indicating that its eyes are adapted for a dimmer environment or nocturnal lifestyle. Species spectral responses ranged from 360 to 620 nm and revealed the presence of rods sensitive to dim and twilight conditions, as well as multiple cone visual pigments providing the basis for color and contrast discrimination. Collectively, our results demonstrate differences in visual function among species inhabiting the Indian River Lagoon system, representative of their unique ecology and life histories.
D Michelle McComb; Stephen M Kajiura; Andrij Z Horodysky; Tamara M Frank
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Publication Detail:
Type:  Journal Article     Date:  2013-04-05
Journal Detail:
Title:  Physiological and biochemical zoology : PBZ     Volume:  86     ISSN:  1537-5293     ISO Abbreviation:  Physiol. Biochem. Zool.     Publication Date:    2013 May-Jun
Date Detail:
Created Date:  2013-04-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883369     Medline TA:  Physiol Biochem Zool     Country:  United States    
Other Details:
Languages:  eng     Pagination:  285-97     Citation Subset:  IM    
Harbor Branch Oceanographic Institute at Florida Atlantic University, Fort Pierce, Florida 34946; 2Biological Sciences, Florida Atlantic University, Boca Raton, Florida 33431; 3Marine and Environmental Science, Hampton University, Hampton, Virginia 23668; 4Nova Southeastern University Oceanographic Center, Dania Beach, Florida 33004.
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