Visual pigment, dark adaptation and rhodopsin renewal in the eye of Pontoporeia affinis (Crustacea, Amphipoda)

Donner, Karl Johan; Länger, Helmut; Lindström, Magnus; Schlecht, Peter

doi:10.1007/bf00191711

Cited by 11 publications

(18 citation statements)

References 59 publications

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“…Ommochromes in T. longicornis retinular cells have an absorption maximum at 500 to 550nm and a smaller peak at ~450nm (data not shown). This is similar to the absorption spectrum of screening pigments in the amphipod Pontoporeia affinis, in which a similar long-wavelength shift was reported between MSP and ERG data (Donner et al, 1994). Shifting of spectral sensitivity could also result from vesicles overlying the ommatidia of talitrids (e.g.…”

Section: Discussionsupporting

confidence: 85%

Visual physiology underlying orientation and diel behavior in the sand beach amphipod Talorchestia longicornis

Cohen

Cronin

Lessios

et al. 2010

Journal of Experimental Biology

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SUMMARYTalitrid amphipods employ vision for zonal recovery behaviors on sand beaches and for entraining circadian activity rhythms. Using a hierarchy of methods, we examined visual spectral and response-intensity functions in Talorchestia longicornis, a species in which orientation and rhythm entrainment are wavelength-specific behaviors. Microspectrophotometry, electroretinogram recording and behavioral assays were used to determine visual pigments, retinal spectral sensitivity and wholeanimal spectral responsivity, respectively. Diel changes in absolute sensitivity were also investigated at retinal and whole-animal levels. Two receptor spectral classes were identified, with values for visual pigment  max of 427 and 518nm. Retinal spectral sensitivity varied with electrode position along the distal-proximal axis. Chromatic adaptation of distal and proximal photoreceptors resulted in sensitivity peaks at 430 and 522nm, respectively. In accordance with identified visual pigments and spectral sensitivity, T. longicornis photobehavioral responsivity covered a broad range (420-580nm). Collectively, a dualpigment visual system underlies wavelength-specific behavior in T. longicornis, with the short-wavelength pigment likely to be localized in the distal R5 retinular cell. While response-intensity functions did not change over the diel cycle at the retinal level, behavioral photoresponsiveness varied between day and night. At a wavelength used by T. longicornis for celestial orientation (420nm), photobehavior was heightened at night, potentially aiding in nocturnal orientation. By contrast, at a wavelength used to entrain its circadian rhythm (520nm) and for routine visual tasks, photobehavior was heightened during the day, and spectral sensitivity matched to the twilight spectrum, facilitating crepuscular vision and entrainment by irradiance at sunrise and sunset.

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Section: Discussionsupporting

confidence: 85%

Visual physiology underlying orientation and diel behavior in the sand beach amphipod Talorchestia longicornis

Cohen

Cronin

Lessios

et al. 2010

Journal of Experimental Biology

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“…2) of the artificial lights used in the experiment indicated a high degree of overlap between the artificial light spectrum and the peak light sensitivities of crustaceans (Donner et al, 1994; Porter et al, 2007). The water temperature in all flumes exhibited slight diurnal changes and decreased over the course of the experiment from ∼12.3 to 7.4°C.…”

Section: Resultsmentioning

confidence: 99%

Artificial light and nocturnal activity in gammarids

Perkin

Hölker

Heller

et al. 2014

PeerJ

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Artificial light is gaining attention as a potential stressor to aquatic ecosystems. Artificial lights located near streams increase light levels experienced by stream invertebrates and we hypothesized light would depress night drift rates. We also hypothesized that the effect of light on drift rates would decrease over time as the invertebrates acclimated to the new light level over the course of one month’s exposure. These hypotheses were tested by placing Gammarus spp. in eight, 75 m × 1 m artificial flumes. One flume was exposed to strong (416 lx) artificial light at night. This strong light created a gradient between 4.19 and 0.04 lx over the neighboring six artificial flumes, while a control flume was completely covered with black plastic at night. Night-time light measurements taken in the Berlin area confirm that half the flumes were at light levels experienced by urban aquatic invertebrates. Surprisingly, no light treatment affected gammarid drift rates. In contrast, physical activity measurements of in situ individually caged G. roeseli showed they increased short-term activity levels in nights of complete darkness and decreased activity levels in brightly lit flumes. Both nocturnal and diurnal drift increased, and day drift rates were unexpectadly higher than nocturnal drift.

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“…It must be emphasized, however, that even though templates honed against vertebrate spectra (Ebrey & Honig 1977;Stavenga et al 1993;Govardovskii et al 2000) have long been successfully applied to insect and crustacean spectra (e.g. Langer et al 1982;Donner et al 1994;Jokela-Määttä et al 2005;Cronin 2006), it is not really clear how appropriate they are in general for visual pigments based on nonvertebrate opsins. Data from invertebrates are much less comprehensive than from vertebrates, and there are none that would allow accurate comparison of the shapes of absorbance spectra for a pigment pair where a single opsin is coupled to different chromophores A1 and A2, identified by independent methods.…”

Section: Microspectrophotometrymentioning

confidence: 99%

Opsin gene sequence variation across phylogenetic and population histories in Mysis (Crustacea: Mysida) does not match current light environments or visual‐pigment absorbance spectra

et al. 2012

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The hypothesis that selection on the opsin gene is efficient in tuning vision to the ambient light environment of an organism was assessed in 49 populations of 12 Mysis crustacean species, inhabiting arctic marine waters, coastal littoral habitats, freshwater lakes ('glacial relicts') and the deep Caspian Sea. Extensive sequence variation was found within and among taxa, but its patterns did not match expectations based on light environments, spectral sensitivity of the visual pigment measured by microspectrophotometry or the history of species and populations. The main split in the opsin gene tree was between lineages I and II, differing in six amino acids. Lineage I was present in marine and Caspian Sea species and in the North American freshwater Mysis diluviana, whereas lineage II was found in the European and circumarctic fresh- and brackish-water Mysis relicta, Mysis salemaai and Mysis segerstralei. Both lineages were present in some populations of M. salemaai and M. segerstralei. Absorbance spectra of the visual pigment in nine populations of the latter three species showed a dichotomy between lake (λ(max) =554-562 nm) and brackish-water (Baltic Sea) populations (λ(max) = 521-535 nm). Judged by the shape of spectra, this difference was not because of different chromophores (A2 vs. A1), but neither did it coincide with the split in the opsin tree (lineages I/II), species identity or current light environments. In all, adaptive evolution of the opsin gene in Mysis could not be demonstrated, but its sequence variation did not conform to a neutral expectation either, suggesting evolutionary constraints and/or unidentified mechanisms of spectral tuning.

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Visual pigment, dark adaptation and rhodopsin renewal in the eye of Pontoporeia affinis (Crustacea, Amphipoda)

Cited by 11 publications

References 59 publications

Visual physiology underlying orientation and diel behavior in the sand beach amphipod Talorchestia longicornis

Visual physiology underlying orientation and diel behavior in the sand beach amphipod Talorchestia longicornis

Artificial light and nocturnal activity in gammarids

Opsin gene sequence variation across phylogenetic and population histories in Mysis (Crustacea: Mysida) does not match current light environments or visual‐pigment absorbance spectra

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