Species diversity and systematics of the<i>Leptodactylus melanonotus</i>group (Anura, Leptodactylidae): review of diagnostic traits and a new species from the Eastern Guiana Shield

Carvalho, Thiago Ribeiro de; Fouquet, Antoine; Lyra, Mariana L.; Giaretta, Ariovaldo Antônio; Costa-Campos, Carlos Eduardo; Rodrigues, Miguel Tréfaut; Haddad, Célio F. B.; Ron, Santiago R.

doi:10.1080/14772000.2022.2089269

Cited by 5 publications

(5 citation statements)

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“…Hailman [21] reported the absence of ODs in Leptodactylus melanonotus , which would imply a reversion from its occurrence in other Leptodactylinae. However, our results indicate that in a closely related species ( Leptodactylus podicipinus [72]), and the four other studied species of this genus, ODs are present, suggesting that the absence of ODs in L. melanonotus requires corroboration.…”

Section: Discussionmentioning

confidence: 77%

Insights into the evolution of photoreceptor oil droplets in frogs and toads

Cervino,

Elias-Costa,

Iglesias

et al. 2024

Proc. R. Soc. B.

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Photoreceptor oil droplets (ODs) are spherical organelles placed most commonly within the inner segment of the cone photoreceptors. Comprising neutral lipids, ODs can be either non-pigmented or pigmented and have been considered optically functional in various studies. Among living amphibians, ODs were only reported to occur in frogs and toads (Anura), while they are absent in salamanders and caecilians. Nonetheless, the limited understanding of their taxonomic distribution in anurans impedes a comprehensive assessment of their evolution and relationship with visual ecology. We studied the retinae of 134 anuran species, extending the knowledge of the distribution of ODs to 46 of the 58 currently recognized families, and providing a new perspective on this group that complements the available information from other vertebrates. The occurrence of ODs in anurans shows a strong phylogenetic signal, and our findings revealed that ODs evolved at least six times during the evolutionary history of the group, independently from other vertebrates. Although no evident correlation was found between OD occurrence, adult habits and diel activity, it is inferred that each independent origin involves distinct scenarios in the evolution of ODs concerning photic habits. Furthermore, our results revealed significant differences in the size of the ODs between nocturnal and arrhythmic anurans relative to the length of the cones’ outer segment.

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Section: Discussionmentioning

confidence: 77%

Insights into the evolution of photoreceptor oil droplets in frogs and toads

Cervino,

Elias-Costa,

Iglesias

et al. 2024

Proc. R. Soc. B.

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“…Amphibians are considered excellent bioindicators of environmental conditions, as they are highly sensitive to sudden changes and pollution. Regarding the frog, L. petersii is perhaps one of the most sensitive amphibians because its habit is semi-aquatic, that is, it is sensitive to aquatic and terrestrial environments [ 18 , 27 ]. As for the tambaqui ( C. macropomum ), in addition to being subjected to confinement, the cultivation ponds are built in the lower regions of the relief so that there is no lack of dammed water, therefore it receives various polluting loads from agriculture and domestic and industrial effluents by rain leaching.…”

Section: Discussionmentioning

confidence: 99%

“…The methods of extraction, detection and quantification of Deoxyniv Fumonisin (FB) in LC-MS/MS, were adopted from Tardieu et al [28], res adapted for extruded and pelleted feeds. For the quantification of OTA, chromatographic elution was performed on a Kromasil C18 column at 40 • C with a flow rate of 0.8 mL min −1 with a standardized fluorescence detector with excitation and emission wavelengths of 333 and 460 nm, respectively [18]. The limit of detection (LOD) was determined by standard injections of AFB 1 and OTA solutions in decreasing order of concentration until the peak signal of the analyte reached a height three times greater than the baseline signal in the retention time of the compound of interest.…”

Section: Determination Of Mycotoxins In Fish Feeds: Acquired Quantifi...mentioning

confidence: 99%

“…The skin of these animals is thin and rich in blood vessels, and it is through it that amphibians interact with the environment. In the current study, the blood of tambaqui ( Colossoma macropomum ) was studied because it is the species raised in fish farms, and frogs of the species Leptodactylus petersii were studied since they are widely distributed in Amazonian streams and associated with the edges of fishponds [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

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Monitoring of Mycotoxigenic Fungi in Fish Farm Water and Fumonisins in Feeds for Farmed Colossoma macropomum

Sousa Terada-Nascimento,

Vieira Dantas-Filho,

Temponi-Santos

et al. 2023

Toxics

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This study aimed to evaluate the occurrence of mycotoxigenic fungi in fish farm water and mycotoxins in feeds for farmed tambaqui (Colossoma macropomum). A total of 40 samples of freshwater from fish farms and 16 samples of feed were collected and analyzed for microbiology. A total of five species of free-living fungi were identified in fish farms: Aspergillus fumigatus, Penicillium citrinum, P. implicatum, Fusarium oxysporum and Alternaria alternata. These fungi species were counted in water samples at 35.14 CFU mL−1 and 24.69 CFU mL−1 in the dry seasons. In all fish farms, there was a higher abundance of fungi species in the rainy season. During visits to the fish farmers, it was possible to verify poor feed storage conditions. Concerning mutations in blood cells, in tambaqui (C. macropomum), a total of 159 anomalies were found, and in Leptodactylus petersii, 299 anomalies were found, with higher incidences in conditions above 1.0 CFU mL−1 in log10(x+1) fungi and in the rainy season. The occurrence of mycotoxicological contamination was confirmed in 81.25% of the analyzed samples. The quantified mycotoxin was Fumonisins B1 + B2 (375 to 1418 μg kg−1). Pearson’s correlation analysis showed a significant positive correlation between Fumonisins and feed samples (r = 0.83). There was also a significant positive correlation between the abundance of fungi in water and the quantification of Fumonisins (r = 0.79). Based on the results obtained, it can be concluded that free-living fungi can be used as bioindicators of water quality in fish farms. Consequently, the lack of good management practices caused microbiological contamination of the aquatic environment.

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“…During a nocturnal active search in February 2021, we found a female of L. brevipes (SVL = 37.7 mm) taking care of a school of approximately 240 tadpoles at stage 26 (sensu Gosner, 1960). The attending female had an upper lip stripe under the eye and a light mottled belly coloration (Heyer, 1994;Gazoni et al, 2021;Carvalho et al, 2022), which helped with the identification. The attending female was close to the school (less than 30 mm) with half of her body submerged and facing toward the opposite direction of the offspring, while tadpoles were feeding from organic material (Fig.…”

mentioning

confidence: 99%

DISTRIBUTION EXTENSION AND PARENTAL CARE IN Leptodactylus brevipes COPE, 1887 (ANURA: LEPTODACTYLIDAE)

CARRILLO

Santana²,

Prado³

2022

Rev Latin Herp

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El cuidado parental tiene un importante papel para la sobrevivencia de la descendencia en varias especies de anfibios, incluyendo especies de ranas de la familia Leptodactylidae. Aquí reportamos una nueva localidad de ocurrencia para Leptodactylus brevipes en el Cerrado brasileño y describimos su comportamiento de cuidado parental. Observamos una hembra de L. brevipes cuidando de un cardumen de renacuajos y realizando el comportamiento de "pumping". Los renacuajos se mantuvieron cerca a la hembra cuidadora, raspando sus piernas y espalda varias veces. No registramos comportamiento agresivo por parte de la hembra. Nuestros resultados están de acuerdo con las observaciones de cuidado maternal en otras especies del grupo de L. melanonotus, incluyendo L. melanonotus, L. natalensis, L. podicipinus y L. pustulatus.

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Species diversity and systematics of theLeptodactylus melanonotusgroup (Anura, Leptodactylidae): review of diagnostic traits and a new species from the Eastern Guiana Shield

Cited by 5 publications

References 49 publications

Insights into the evolution of photoreceptor oil droplets in frogs and toads

Insights into the evolution of photoreceptor oil droplets in frogs and toads

Monitoring of Mycotoxigenic Fungi in Fish Farm Water and Fumonisins in Feeds for Farmed Colossoma macropomum

DISTRIBUTION EXTENSION AND PARENTAL CARE IN Leptodactylus brevipes COPE, 1887 (ANURA: LEPTODACTYLIDAE)

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