Transition of the retinal area centralis in bluegill Lepomis macrochirus as an implication of changes in feeding ecology with age

Gomi, Yuuki; Miyazaki, Taeko

doi:10.1007/s12562-015-0880-9

Cited by 2 publications

(4 citation statements)

References 24 publications

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“…to the front in bluegill sunfish (Gomi and Miyazaki, 2015). More comparative studies are necessary to assess how acuity correlates with lifestyle in fishes (Collin and Pettigrew, 1989).…”

Section: Resultsmentioning

confidence: 99%

“…In contrast, vision is well characterized for bluegill sunfish (Lepomis macrochirus). Visual acuity was assessed as 3-5.5 cycles deg −1 in behavioral experiments as well as on the basis of the cone mosaic (Northmore et al, 2007); retinal resolution was determined as 2.8-11 cycles deg −1 (Williamson and Keast, 1988;Gomi and Miyazaki, 2015). Minimum contrast thresholds amounted to 0.03 at 0.4-0.5 cycles deg −1 (Northmore et al, 2007), whereas Hawryshyn et al (1988) reported contrast thresholds even lower than 0.01.…”

Section: Introductionmentioning

confidence: 99%

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Single target acuity in the common sunfish (Lepomis gibbosus)

Spratte

Sandow

Schnermann

et al. 2021

Journal of Experimental Biology

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Vision is considered to contribute to foraging, territorial, and reproductive behavior in sunfish. In these contexts, sunfish need to perceive single targets, such as prey items or body markings from either conspecifics or individuals of other sunfish species, from some distances. We determined the single target acuity of six common sunfish in a behavioral experiment to assess whether the visual abilities of sunfish correspond with behavioral observations or reactive distance measures and thus to assess the limits of vision regarding the mentioned behaviors. Single target acuity for full-contrast single targets amounted to 0.17 (0.13 - 0.32) deg. When contrast was reduced to Weber contrasts of 0.67 and 0.41, single target acuity dropped to 0.34 (0.31 - 0.37) deg, and finally to 0.42 (0.34 - 0.54) deg. Single target acuity would thus allow common sunfish to perceive biologically relevant stimuli at reasonable distances even when contrast is reduced.

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“…to the front in bluegill sunfish (Gomi and Miyazaki, 2015). More comparative studies are necessary to assess how acuity correlates with lifestyle in fishes (Collin and Pettigrew, 1989).…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single target acuity in the common sunfish (Lepomis gibbosus)

Spratte

Sandow

Schnermann

et al. 2021

Journal of Experimental Biology

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“…The highest cell density region of the yellowfin goby is localized in the dorso-temporal area, consistent with the visual axis estimated from the relative attachment points of the central suspensory ligament and lentis muscle to the lens. A close relationship between the ganglion cell topography (Gomi & Miyazaki, 2015) and the visual axis basing on Tamura's scheme (Type (2), main visual axis directs forward, Supporting…”

Section: Discussionmentioning

confidence: 97%

“…In teleosts, a greater number of ganglion cells present, is localized species-specifically and reflect the feeding vector (Collin & Pettigrew, 1988a;1988b;Gomi & Miyazaki, 2015;Miyazaki, Iwami, & Meyer-Rochow, 2011;Shand, Chin, Harman, Moore, & Collin, 2000). For example, in the retina of Gymnocranius bitorquatus (Actinopterygii: Lethrinidae), there are two specialized zones with high ganglion cell density, a dorso-temporal area and a zone of high horizontal cell density across the retinal meridian in the nasal region.…”

Section: Introductionmentioning

confidence: 99%

A lambda‐shaped retractor lentis muscle in the yellowfin goby Acanthogobius flavimanus

Miyazaki

Kato

Ikenaga

et al. 2019

Journal of Morphology

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We identified a morphologically uncommon piscine retractor lentis muscle in the yellowfin goby Acanthogobius flavimanus. This lentis muscle has a shape similar to the Greek small letter lambda (λ). The two legs of the muscle are attached to the retinal periphery at the ventral eyecup, while the tip is connected to the lens surface by a ligament. Scanning electron microscopy showed that the fibers of the lentis muscle run along the length of both the anterior and posterior legs. Immunolabeling with antiacetylated tubulin antibody and neuronal tracing with DiI of the whole lentis muscle revealed that the anterior leg is innervated by one or more nerves. The topographic distribution of ganglion cells in the retina was investigated to identify the visual axis. Three high cell density areas were observed in the dorso‐temporal, ventro‐nasals and ventro‐temporal retina. These findings suggest that the λ‐shaped lentis muscle may enable accommodatory movement of the lens toward the temporal as well as the nasal and/or ventral retina.

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Transition of the retinal area centralis in bluegill Lepomis macrochirus as an implication of changes in feeding ecology with age

Cited by 2 publications

References 24 publications

Single target acuity in the common sunfish (Lepomis gibbosus)

Single target acuity in the common sunfish (Lepomis gibbosus)

A lambda‐shaped retractor lentis muscle in the yellowfin goby Acanthogobius flavimanus

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