Molecular diversity of visual pigments in Stomatopoda (Crustacea)

  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},
  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… 

The molecular genetics and evolution of colour and polarization vision in stomatopod crustaceans

Using in situ hybridization of opsins in photoreceptor cells, new results are obtained that support the hypothesis of an ancient functional division separating spatial and polarizational vision from colour vision in the stomatopods and suggest that opsins specialized for colour vision have diverged from those devoted to polarization vision, and possibly motion and spatial vision.

Evolution of anatomical and physiological specialization in the compound eyes of stomatopod crustaceans

Maximum likelihood ancestral state reconstructions indicate that ancestral stomatopod eyes contained six midband rows and four intrarhabdomal filters, illustrating that the visual physiological complexity originated early in stom atopod evolutionary history.

The evolution of complexity in the visual systems of stomatopods: insights from transcriptomics.

Examining the molecular function of stomatopods' visual systems using new whole eye 454 transcriptome datasets from two species confirms the results of previous studies recovering more opsin transcripts than spectrally distinct types of photoreceptors and expands the known opsin diversity in stom atopods to clades of arthropod opsins that are sensitive to short wavelengths and ultraviolet wavelengths.

Opsin Expression in the Central Nervous System of the Mantis Shrimp Neogonodactylus oerstedii

The identified mRNAs that could encode four different opsins and several components of a potential Gq-mediated phototransduction pathway in the central nervous system of the Caribbean mantis shrimp Neogonodactylus oerstedii suggest that there are previously undiscovered cerebral photoreceptors in stomatopods.

Sequence, Structure, and Expression of Opsins in the Monochromatic Stomatopod Squilla empusa.

In situ hybridization of two of the opsins revealed strong co-expression in all photoreceptors in both midband and peripheral regions of the retina as well as in selected ocular and cerebral ganglion neuropils, suggesting that the multiple opsins characteristic of other stomatopod species may have similar functional specialization.

Exceptional diversity of opsin expression patterns in Neogonodactylus oerstedii (Stomatopoda) retinas

This study reveals the most elaborate opsin expression patterns ever described in any animal eye and demonstrates the evolutionary potential for increasing visual system functional diversity through opsin gene duplication and diversification, as well as changes in patterns of gene coexpression among photoreceptors and retinula cells.

Intracellular Recordings of Spectral Sensitivities in Stomatopods: a Comparison across Species.

The spectral sensitivities across five species of stomatopods within the superfamily Gonodactyloidea are compared using intracellular electrophysiological recordings to show the similarities and the variations in the spectral sensitivity estimates previously obtained using microspectrophotometry.

TheEvolutionofComplexityintheVisualSystemsofStomatopods: Insights from Transcriptomics

The presence of nine components of the stomatopods’ G-proteincoupled receptor (GPCR) phototransduction cascade are identified, including two visual arrestins, subunits of the heterotrimeric G-protein, phospholipase C, transient receptor potential channels, and opsin transcripts, which suggests that stom atopods utilize a Gq-mediated GPCR-signaling cascade.

Uncovering a gene duplication of the photoreceptive protein, opsin, in scallops (Bivalvia: Pectinidae).

The identification of two highly divergent Gq-opsin genes in scallops is valuable for future functional investigations and provides a foundation for further study of a morphologically and ecologically diverse clade of bivalves that has been understudied with respect to visual ecology and diversification of opsin.

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A broad survey of mantis shrimp reveals variability in ocular UV-filters, suggesting a complex evolutionary history for these pigments, and even greater visual complexity than previously appreciated in this group.



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.

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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.

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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.

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