Retinal Topography of Ganglion Cells and Putative UV-Sensitive Cones in Two Antarctic Fishes: Pagothenia borchgrevinki and Trematomus bernacchii (Nototheniidae)

Miyazaki, Taeko; Iwami, Tetsuo; Somiya, Hiroaki; Meyer-Rochow, Victor Benno

doi:10.2108/zsj.19.1223

Cited by 9 publications

(10 citation statements)

References 45 publications

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“…The area of acute vision comes along with low cone to ganglion cell convergence (Fig. 5D), like in the areae of other teleosts (Miyazaki et al, 2002), elasmobranchs (Litherland and Collin, 2008), the cat (Steinberg et al, 1973) and the hyena (Calderone et al, 2003: only for M/L-cones). A rather high cone convergence in the ventral quadrant ( Fig.…”

Section: Biological Significance Of the 3d-pattern Of Retinal Cell Numentioning

confidence: 53%

“…Kryger et al, 1998;Schivitz et al, 2008 for higher vertebrates) or using conventionally stained tangential sections (for teleosts see e.g. : O'Connell, 1963;Beaudet et al, 1997;Reckel et al, 2001;Miyazaki et al, 2002;Heß, 2009). Determination of rod photoreceptor densities is a difficult venture and can be achieved via counting nuclei (Zaunreiter et al, 1991) or inner segments in case of rod monolayers (Steinberg et al, 1973;Andrade da Costa and Hokoç , 2000;Litherland and Collin, 2008).…”

Section: Introductionmentioning

confidence: 99%

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3D-topography of cell nuclei in a vertebrate retina—A confocal and two-photon microscopic study

Koch¹,

Seebacher²,

Heß

2010

Journal of Neuroscience Methods

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Section: Biological Significance Of the 3d-pattern Of Retinal Cell Numentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

3D-topography of cell nuclei in a vertebrate retina—A confocal and two-photon microscopic study

Koch¹,

Seebacher²,

Heß

2010

Journal of Neuroscience Methods

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“…Therefore, our result implies that T. newnesi has single LWS gene. Previously, we described the complete square cone mosaic in the retinas of six adult notothenioids and concluded that they must have four types of visual pigment: red-, green-, blue-, and ultraviolet (UV)-sensitive (Miyazaki et al 2001(Miyazaki et al , 2002, as has been shown in brown trout (Salmo trutta) (Bowmaker and Kunz 1987). The cone visual pigment gene was first identified in Antarctic fish by Pointer et al (2005).…”

Section: Discussionmentioning

confidence: 90%

Molecular cloning of cDNA encoding red opsin gene in the retinas of five Antarctic notothenioid fishes

Miyazaki

Iwami

2011

Polar Biol

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Previous evidence suggested that notothenioid fish had lost red-sensitive (LWS) visual pigment and photoreceptors, but retained ultraviolet-sensitive (SWS1), blue-sensitive (SWS2), and green-sensitive (RH2) pigments. We used RT-PCR and Southern blot to isolate the LWS opsin gene in five notothenioid species. We determined full-coding LWS opsin sequences and genomic sequences. The expected peak absorbance of the LWS opsin, based on the five-sites rule that is primarily responsible for the spectral sensitivities in vertebrates, ranged from 541 to 553 nm. In Antarctic waters, light of this wavelength penetrates to dozens of meters. Thus, we conclude that notothenioids use tetrachromatic color vision in shallower waters, at least during the Antarctic summer.

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“…In a number of species of Trematomus, there is a typical square cone mosaic with both central and corner single cones (Meyer-Rochow and Klyne, 1982;Miyazaki et al, 2002;Miyazaki et al, 2001). Miyazaki et al have assumed that because the corner cones in many teleosts are UV sensitive, this will also be the case in the notothenioids.…”

Section: Discussionmentioning

confidence: 99%

“…Single and double cones have been reported in a number of species (Eastman and Lannoo, 2003;Meyer-Rochow and Klyne, 1982;Miyazaki et al, 2002), and Miyazaki et al (2001) identified a square mosaic that is formed with double cones at the sides and single cones in the centre and at each of the four corners. Cones in corner positions have been shown to contain a UV-sensitive visual pigment in the retinae of a number of teleost species (Avery et al, 1983;Bowmaker et al, 1991b;Hárosi and Hashimoto, 1983;Hisatomi et al, 1996Hisatomi et al, , 1997Whitmore and Bowmaker, 1989), so it is possible that UV sensitivity is also present in notothenioid fishes.…”

mentioning

confidence: 99%

Adaptations to an extreme environment: retinal organisation and spectral properties of photoreceptors in Antarctic notothenioid fish

Pointer

Cheng

Bowmaker

et al. 2005

Journal of Experimental Biology

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The Notothenioid suborder of teleosts comprises a number of species that live below the sea ice of the Antarctic. The presence of 'antifreeze' glycoproteins in these fish as an adaptation to freezing temperature has been well documented but little is known about the adaptations of the visual system of these fish to a light environment in which both the quantity and spectral composition of downwelling sunlight has been reduced by passage through ice and snow. In this study, we show that the red/long-wave sensitive (LWS) opsin gene is not present in these fish but a UV-sensitive short-wave sensitive (SWS1) pigment is expressed along with bluesensitive (SWS2) and green/middle-wave sensitive (Rh2) pigments. The identity and spectral location of maximal absorbance of the SWS1 and Rh2 pigments was confirmed by in vitro expression of the recombinant opsins followed by regeneration with 11-cis retinal. Only the SWS2 pigment showed interspecific variations in peak absorbance. Expression of the Rh2 opsin is localised to double cone receptors in both the central and peripheral retina, whereas SWS2 opsin expression is present only in the peripheral retina. SWS1 cones could not be identified by either microspectrophotometry or in situ hybridisation, presumably reflecting their low number and/or uneven distribution across the retina. A study of photoreceptor organisation in the retina of two species, the shallower dwelling Trematomus hansoni and the deeper dwelling Dissostichus mawsoni, identified a square mosaic in the former, and a row mosaic in the latter species; the row mosaic in Dissostichus mawsoni with less tightly packed cone photoreceptors allows for a higher rod photoreceptor density.

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Retinal Topography of Ganglion Cells and Putative UV-Sensitive Cones in Two Antarctic Fishes: Pagothenia borchgrevinki and Trematomus bernacchii (Nototheniidae)

Cited by 9 publications

References 45 publications

3D-topography of cell nuclei in a vertebrate retina—A confocal and two-photon microscopic study

3D-topography of cell nuclei in a vertebrate retina—A confocal and two-photon microscopic study

Molecular cloning of cDNA encoding red opsin gene in the retinas of five Antarctic notothenioid fishes

Adaptations to an extreme environment: retinal organisation and spectral properties of photoreceptors in Antarctic notothenioid fish

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