Molecular diversity of visual pigments in Stomatopoda (Crustacea)

@article{Porter2009MolecularDO,
  title={Molecular diversity of visual pigments in Stomatopoda (Crustacea)},
  author={Megan L. Porter and Michael J. Bok and Phyllis R. Robinson and Thomas W. Cronin},
  journal={Visual Neuroscience},
  year={2009},
  volume={26},
  pages={255 - 265}
}
Abstract Stomatopod crustaceans possess apposition compound eyes that contain more photoreceptor types than any other animal described. While the anatomy and physiology of this complexity have been studied for more than two decades, few studies have investigated the molecular aspects underlying the stomatopod visual complexity. Based on previous studies of the structure and function of the different types of photoreceptors, stomatopod retinas are hypothesized to contain up to 16 different… 

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References

SHOWING 1-10 OF 80 REFERENCES

A retina with at least ten spectral types of photoreceptors in a mantis shrimp

The absorption spectra of the coloured filters and the visual pigments in frozen sections of retinae of a typical species, Pseudosquilla ciliata, of stomatopod crustaceans are measured using end-on microspectrophotometry.

Molecular characterization of crustacean visual pigments and the evolution of pancrustacean opsins.

Although the conservative dN/dS methods did not detect any selection, 4 amino acid properties (coil tendencies, compressibility, power to be at the middle of an alpha-helix, and refractive index) were found to be influenced by destabilizing positive selection.

Visual pigment diversity in two genera of mantis shrimps implies rapid evolution (Crustacea; Stomatopoda)

The variation within closely related species of the same genus implies that visual pigments can evolve rapidly in stomatopod crustaceans, andVisual pigments of the tiered rows of the midband span a larger spectral range in shallow-water than deepwater species.

Eye Design and Color Signaling in a Stomatopod Crustacean Gonodactylus smithii

Color vision in G. smithii is therefore not exclusively adapted to detect its own color signals, but the spectral tuning of some photoreceptors enhances the contrast of certain color signals to a large enough degree to make co-evolution between color vision and these rather specific color signals likely.

Differential Expression of Duplicated Opsin Genes in Two EyeTypes of Ostracod Crustaceans

Strong support for differential expression of opsins in ostracod median and compound eyes is found and it is suggested that photoreceptor specific expression may be a general phenomenon in organisms with multiple receptors.

Multiple spectral classes of photoreceptors in the retinas of gonodactyloid stomatopod crustaceans

These stomatopod species have retained the typical crustacean layered rhabdoms in the peripheral retina and the 2 most ventral rows of the central band, but have converted the photoreceptors of the 4 dorsal rows ofThe central band into as many as 8 narrowly tuned spectral classes, which could serve a high-quality hue discrimination system.

Spectral tuning and the visual ecology of mantis shrimps.

Results show that receptors of the peripheral photoreceptors, those outside the midband which are responsible for standard visual tasks such as spatial vision and motion detection, reveal the well-known pattern of decreasing lambdamax with increasing depth.

The retinas of mantis shrimps from low-light environments (Crustacea; Stomatopoda; Gonodactylidae)

Modifications in the retinas of 3 species of stomatopods in the superfamily Gonodactyloidea seen primarily as specializations of the intrarhabdomal filters decrease the spectral range and number of types of narrow-band spectral classes of phooreceptors, while increasing their sensitivity.

Two opsins from the compound eye of the crab Hemigrapsus sanguineus

Evidence is presented that crustaceans possess multiple pigment systems for vision, and it is suggested that both opsins of this brachyuran crab produce visual pigments with maximal absorption in the blue-green region of the spectrum.

Photoreceptor spectral diversity in the retinas of squilloid and lysiosquilloid stomatopod crustaceans

Spectral sensitivity functions were estimated for the lysiosquilloid species based on estimates of visual pigment λnax, photoreceptor dimensions, and specific absorbances of the visual pigments and intrarhabdomal filters, and squilloids have retinas that are much simpler.
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