An UV-sensitive anuran species as an indicator of environmental quality of the Southern Atlantic Rainforest

Lipinski, Victor Mendes; Santos, Tiago Gomes dos; Schuch, André Passaglia

doi:10.1016/j.jphotobiol.2016.10.025

Cited by 18 publications

(11 citation statements)

References 51 publications

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“…Ultra-Violet (UV) radiation is one of the factors responsible for amphibian declines (Blaustein et al, 1997). Exposure to UV radiation affects embryonic development, causing morphological changes and tadpole mortality, which in turn result in population declines (Lipinski et al, 2016). Internal melanin seems to protect internal organs against the genotoxic effects of UV radiation (Roulin, 2014).…”

Section: Introductionmentioning

confidence: 99%

Environmental correlates of internal coloration in frogs vary throughout space and lineages

Franco‐Belussi

Provete

Oliveira

2017

Preprint

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SummaryInternal organs of ectotherms have melanin-containing cells. Several studies analyzed their developmental origin, role in immunity, and hormonal regulation. However, little is known about how environmental variables influence the distribution and quantity of organ coloration. Here, we addressed how environmental variables (temperature, UV, and photoperiod) influence the internal coloration of amphibians after controlling for spatial and phylogenetic autocorrelations. Coloration in all organs was correlated with phylogeny. However, the coloration of the heart, kidneys, and rectum of hylids, R. schneideri, some Leptodactylus, and Proceratophrys were influenced by temperature and photoperiod, whereas that of the testicle, lumbar parietal peritoneum, lungs, and mesenterium of Leiuperinae, Hylodidae, Adenomera, most Leptodactylus were influenced by UVB and temperature variation. Therefore, the amount of internal melanin seems to be a key trait influencing species distribution of frogs throughout space, since it can protect internal organs against the deleterious effect of high UV-B, temperature variation, and photoperiod.SignificanceThe functions of internal coloration in fishes and frogs are little known. Internal pigmentation is commonly altered in fish and the degree of response is correlated with body transparency levels, suggesting possible adaptive functions. Here, we assume that internal melanin has protective functions against UV-B, temperature variation, and photoperiod. Thus it could influence frogs species distribution throughout space. The melanin coloration of each organ was influenced by distinct environmental variables depending on the lineages of species. Our results could direct further studies about the functions of internal coloration.

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Section: Introductionmentioning

confidence: 99%

Environmental correlates of internal coloration in frogs vary throughout space and lineages

Franco‐Belussi

Provete

Oliveira

2017

Preprint

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“…UV radiation can have deleterious effects on anurans (Lipinski et al., ). Consequently, species that occur in places with high UV incidence could have developed more melanin on the testicles as a way to protect their germinal epithelium (Franco‐Belussi et al., ), as damage in the gametes can influence the reproductive fitness of individuals.…”

Section: Discussionmentioning

confidence: 99%

“…Ultraviolet (UV) radiation is one of the factors responsible for worldwide amphibian declines (Blaustein, Kiesecker, Chivers, & Anthony, ). Exposure to UV affects embryonic development by promoting DNA damage, which may cause morphological changes and tadpole mortality, resulting in population declines (Lipinski, Santos, & Schuch, ), and also affects the immune system of adults (Ceccato, Cramp, Seebacher, & Franklin, ). Previous studies have also found that anuran species respond differently to UV (reviewed in Blaustein & Belden, ).…”

Section: Introductionmentioning

confidence: 99%

Environmental correlates of internal coloration in frogs vary throughout space and lineages

Franco‐Belussi

Provete

Oliveira

2017

Ecology and Evolution

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Internal organs of ectotherms have melanin‐containing cells that confer different degrees of coloration to them. Previous experimental studies analyzed their developmental origin, role in immunity, and hormonal regulation. For example, melanin increases with ultraviolet radiation (UV) and temperature in frogs and fish. However, little is known about how environmental variables influence the amount of coloration on organs among amphibian species over a large spatial extent. Here, we tested how climatic variables (temperature, UV, and photoperiod) influence the coloration of internal organs of anurans. We recorded the level of melanin pigmentation using four categories on 12 internal organs and structures of 388 specimens from 43 species belonging to six anuran families. Then, we tested which climatic variables had the highest covariation with the pigmentation on each organ after controlling for spatial autocorrelation in climatic variables and phylogenetic signal in organ coloration using the extended version of the RLQ ordination. Coloration in all organs was correlated with the phylogeny. However, the coloration of different organs was affected by different variables. Specifically, the coloration of the heart, kidneys, and rectum of hylids, Rhinella schneideri, some Leptodactylus, and Proceratophrys strongly covaried with temperature and photoperiod, whereas that of the testicle, lumbar parietal peritoneum, lungs, and mesenterium of Leiuperinae, Hylodidae, Adenomera, and most Leptodactylus had highest covariation with UV‐B and temperature. Our results support the notion that melanin pigmentation on the surface of organs of amphibians has an adaptive function conferred by the protective functions of the pigment. But most importantly, internal melanin seems to respond differently to climatic variables depending on the lineage and locality in which species occur.

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“…For example, in South America there are indications that land-use and climate change may lead to increased exposure to UV radiation in the habitats of frog species, e.g., Hypsiboas curupi and Hypsiboas pulchellus. [184][185][186] However, while UV radiation may impair vision and cause DNA damage to frogs, it is not considered at present to be among the most important environmental factors contributing to the reduced fitness and abundance of several frog species in this region. 187…”

Section: Uv Radiation Damage To Animalsmentioning

confidence: 99%

Linkages between stratospheric ozone, UV radiation and climate change and their implications for terrestrial ecosystems

Bornman

Barnes

Robson

et al. 2019

Photochem Photobiol Sci

150

128

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An UV-sensitive anuran species as an indicator of environmental quality of the Southern Atlantic Rainforest

Cited by 18 publications

References 51 publications

Environmental correlates of internal coloration in frogs vary throughout space and lineages

Environmental correlates of internal coloration in frogs vary throughout space and lineages

Environmental correlates of internal coloration in frogs vary throughout space and lineages

Linkages between stratospheric ozone, UV radiation and climate change and their implications for terrestrial ecosystems

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