Eye ontogeny inPleurodema bufoninum: A comparison withPleurodema somuncurense(Anura, Leptodactylidae)

Volonteri, Clara; Barrasso, Diego Andrés; Cotichelli, Leonardo; Basso, Néstor Guillermo; Hermida, Gladys N.

doi:10.1002/jmor.20682

Cited by 8 publications

(7 citation statements)

References 24 publications

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“…Although the degree of asphericity of adult amphibian lenses varies with species, the equatorial diameter is never more than 22% greater than the axial dimension and is usually significantly less than this (e.g. Sivak et al., 1985; Volonteri et al., 2017). Thus, any error involved in estimating equatorial rather than axial diameter will be relatively modest.…”

Section: Methodsmentioning

confidence: 99%

Ecology drives patterns of spectral transmission in the ocular lenses of frogs and salamanders

et al. 2022

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1. The spectral characteristics of vertebrate ocular lenses affect the image of the world that is projected onto the retina, and thus help shape diverse visual capabilities. Here, we tested whether amphibian lens transmission is driven by adaptation to diurnal activity (bright light) and/or scansorial habits (complex visual environments).2. Spectral transmission through the lenses of 79 species of frogs and six species of salamanders was measured, and data for 29 additional frog species compiled from published literature. Phylogenetic comparative methods were used to test ecological explanations of variation in lens transmission and to test for selection across traits.3. Lenses of diurnal (day-active) and scansorial (climbing) frogs transmitted significantly less shortwave light than those of non-diurnal or non-scansorial amphibians, and evolutionary modelling suggested that these differences have resulted from differential selection.4. The presence of shortwave-transparent lenses was common among the sampled amphibians, which implies that many are sensitive to shortwave light to some degree even in the absence of visual pigments maximally sensitive in the UV. This suggests that shortwave light, including UV, could play an important role in amphibian behaviour and ecology. 5. Shortwave-absorbing lens pigments likely provide higher visual acuity to diurnally active frogs of multiple ecologies and to nocturnally active scansorial frogs. This new mechanistic understanding of amphibian visual systems suggests that | 851 Functional Ecology THOMAS eT Al.

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Section: Methodsmentioning

confidence: 99%

Ecology drives patterns of spectral transmission in the ocular lenses of frogs and salamanders

et al. 2022

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“…The majority of amphibians that live their adult life on land develop a short upper and lower lid during metamorphosis (Walls, 1942). The retina and lens, structures related to light detection, appear early in larval life, while terrestrial elements do not develop until after metamorphosis (Volonteri et al, 2017), with axolotls only having a dorsal eyelid rudiment. Nictitating membranes, while present in frogs, are absent in urodeles, but the reasons underlying this loss are unclear (Cuny and Malacinski, 1986).…”

Section: General Morphology Of a Visually Orientated Amphibian Eyementioning

confidence: 99%

The Evolution of Amphibian Photoreception

Mohun

2019

Front. Ecol. Evol.

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There have been a growing number of studies into the visual evolution of vertebrates. However, there remain few detailed integrative studies on the visual system of amphibians using morphological, molecular and physiological methods outside of a few model species. There are many examples of amphibian species that are closely related phylogenetically, but occupy vastly different ecological niches and so provide a substantial resource for the study of adaptive evolution. This review will examine the published literature on the three living orders of amphibians, the Anurans, Caudata, and Gymnophiona.

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“…[14,15]), there has been a renewal in the attention to the amphibian visual system. Over the last decade, the main focus has been set on visual pigments and especially in the unique green rods only present in the amphibian retina (see reviews by [16,17]), but some studies also focused on different aspects of eye morphology [18][19][20][21][22][23]. Anurans display a vast diversity of ecological traits including habits, diel activity, and reproductive mode [8,24].…”

Section: Introductionmentioning

confidence: 99%

“…Pupil shape diversity in adult frogs and toads. Seven general pupil shapes were defined, with a remarkable internal diversity in most of them: vertical (1-6), horizontal(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17), rhomboidal/subrhomboidal(18)(19)(20)(21)(22)(23), triangular(24)(25)(26), circular(27), fan(28)(29), inverted fan(30).1, Agalychnis callidryas (Hylidae); 2, Afrixalus fornasini (Hyperoliidae); 3, Limnomedusa macroglossa (Alsodidae); 4, Pelobates fuscus (Pelobatidae); 5, Calyptocephalella gayi (Calyptocephalellidae); 6, Pipa pipa (Pipidae); 7, Sphaenorhynchus lacteus (Hylidae); 8, Pristimantis metabates (Craugastoridae); 9, Boophis pauliani (Mantellidae); 10, Aplastodiscus cavicola (Hylidae); 11, Itapotihyla langsdorffii (Hylidae); 12, Chiromantis rufescens (Rhacophoridae); 13, Eupsophus roseus (Alsodidae); 14, Hyloscirtus ptychodactylus (Hylidae); 15, Espadarana durrellorum (Centrolenidae); 16, Boophis lilianae (Mantellidae); 17, Hyperolius marmoratus (Hyperoliidae); 18, Nyctibatrachus karnatakaensis (Nyctibatrachidae); 19, Odontophrynus americanus (Odontophrynidae); 20, Dyscophus antongilii (Microhylidae); 21, Boana geographica (Hylidae); 22, Morerella cyanophthalma (Hyperoliidae); 23, Spinomantis aglavei (Mantellidae); 24, Crinia sloanei (Myobatrachidae); 25, Bombina variegata (Bombinatoridae); 26, Barbourula busuangensis (Bombinatoridae); 27, Xenopus laevis (Pipidae); 28, Occidozyga lima (Dicroglossidae); 29, Ranoidea cryptotis (Hylidae); 30, Phrynella pulchra (Microhylidae).…”

mentioning

confidence: 99%

A closer look at pupil diversity and evolution in frogs and toads

et al. 2021

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The eyes of frogs and toads (Anura) are among their most fascinating features. Although several pupil shapes have been described, the diversity, evolution, and functional role of the pupil in anurans have received little attention. Studying photographs of more than 3200 species, we surveyed pupil diversity, described their morphological variation, tested correlation with adult habits and diel activity, and discuss major evolutionary patterns considering iris anatomy and visual ecology. Our results indicate that the pupil in anurans is a highly plastic structure, with seven main pupil shapes that evolved at least 116 times during the history of the group. We found no significant correlation between pupil shape, adult habits, and diel activity, with the exception of the circular pupil and aquatic habits. The vertical pupil arose at least in the most-recent common ancestor of Anura + Caudata, and this morphology is present in most early-diverging anuran clades. Subsequently, a horizontal pupil, a very uncommon shape in vertebrates, evolved in most neobatrachian frogs. This shape evolved into most other known pupil shapes, but it persisted in a large number of species with diverse life histories, habits, and diel activity patterns, demonstrating a remarkable functional and ecological versatility.

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Eye ontogeny inPleurodema bufoninum: A comparison withPleurodema somuncurense(Anura, Leptodactylidae)

Cited by 8 publications

References 24 publications

Ecology drives patterns of spectral transmission in the ocular lenses of frogs and salamanders

Ecology drives patterns of spectral transmission in the ocular lenses of frogs and salamanders

The Evolution of Amphibian Photoreception

A closer look at pupil diversity and evolution in frogs and toads

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