Longevity and survival curves of Rhinella icterica (Anura, Bufonidae) under laboratory conditions

Lima, Mauro Sérgio Cruz Souza; Pederassi, Jonas; Souza, Carlos Alberto dos Santos

doi:10.1590/1519-6984.02512

Cited by 3 publications

(5 citation statements)

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“…The results found in the development of tadpoles in a cleaning filtration system were already encountered for Rhinella icterica (LIMA et al, 2014) with a maximum mortality rate of 7% in 2% of the ones found in this study. Given that the highest rate was 5%, it is similar to the result found in this study.…”

Section: Discussionsupporting

confidence: 70%

“…Testing the qualities of the aquarium drum while following the development of the species Leptodactylus macrosternum Miranda-Ribeiro, 1926 through the structured model of the investigated population (GOTELLI, 2007;LIMA et al, 2014).…”

Section: Biologicalmentioning

confidence: 99%

“…The mathematical model was proposed by Lima & Pederassi (2014), larval stage organized into columns regarding time units (x days); Lx fraction of survivors by larval phase, in each x interval; dX is the fraction of subjects that metamorphosed or died between the ages x e x+1 and was estimated by Lx-Lx=1. The value of X (average probability of survival among the larval stages in successive metamorphoses) was calculated by Lx-1/2(dx), the total number of days of remaining life that larval stage survivors had (x)l Tx was estimated by Σ Ex+(Ex+1)+Ew, where "w" is the maximum larval phase in weeks; the x life expectancy, was estimated by Tx/Lx.…”

Section: Mathematical Modelmentioning

confidence: 99%

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Method of tadpoles in a closed system with filtration

Sérgio Cruz Souza Lima,

Leite Carnib de Sousa,

Pederassi

et al. 2023

CadUniFOA

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Considering the need to differentiate tadpoles by species, and by stage of development, and to consolidate the preservation of the largest number of stages in herpetological collection, the collection of tadpoles and maintenance in aquarium until metamorphosis is common for final identification of its species. For this purpose, the present work aimed at creating a low-cost method for maintaining tadpoles in the laboratory that would minimize the space used and facilitate maintenance. Plastic organizers were used as aquariums, interconnected by closed water circuits with filtration. During a 21-day test, tadpoles of Leptodactylus macrosternum showed maximum mortality of 9% with this breeding method.

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Section: Discussionsupporting

confidence: 70%

Section: Biologicalmentioning

confidence: 99%

Section: Mathematical Modelmentioning

confidence: 99%

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Method of tadpoles in a closed system with filtration

Sérgio Cruz Souza Lima,

Leite Carnib de Sousa,

Pederassi

et al. 2023

CadUniFOA

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“…Lima and Pederassi (2012) and Lima et al (2014) showed studies in which the stage progress decreases the probability of mortality, but reduces the population size of the species.…”

Section: Introductionmentioning

confidence: 99%

Estimation of a closed population size of tadpoles in temporary pond

2017

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The practice of capture-recapture to estimate the diversity is well known to many animal groups, however this practice in the larval phase of anuran amphibians is incipient. We aimed at evaluating the Lincoln estimator, Venn diagram and Bayes theorem in the inference of population size of a larval phase anurocenose from lotic environment. The adherence of results was evaluated using the Kolmogorov-Smirnov test. The marking of tadpoles for later recapture and methods measurement was made with eosin methylene blue. When comparing the results of Lincoln-Petersen estimator corresponding to the Venn diagram and Bayes theorem, we detected percentage differences per sampling, i.e., the proportion of sampled anuran genera is kept among the three methods, although the values are numerically different. By submitting these results to the Kolmogorov-Smirnov test we have found no significant differences. Therefore, no matter the estimator, the measured value is adherent and estimates the total population. Together with the marking methodology, which did not change the behavior of tadpoles, the present study helps to fill the need of more studies on larval phase of amphibians in Brazil, especially in semi-arid northeast.Keywords: Amphibia, Anura, capture-recapture, diversity, lentic environments. Estimativa do tamanho da população fechada de girinos em lagoas temporárias ResumoA prática de captura-recaptura para a estimação da diversidade é bem conhecida para diversos grupos animais, porém na fase larvar de anfíbios anuros essa prática é incipiente. Objetivamos avaliar os métodos do estimador de Lincoln, diagrama de Venn e o teorema de Bayes na inferência do tamanho populacional de uma anurocenose em fase larvar de ambiente lótico. A aderência dos resultados foi avaliada através do teste de Kolmogorov-Smirnov. A marcação dos girinos para posterior recaptura e aferição dos métodos foi feita com eosina de azul de metileno. Ao compararmos os resultados do estimador de Lincoln que corresponde com o do diagrama de Venn e com o teorema de Bayes detectamos diferenças percentuais por amostragem, isto é, a manutenção da proporção dos gêneros de anuros amostrados é mantida entre os três métodos, embora com valores numericamente diferentes. Ao submetermos esses resultados ao teste Kolmogorov-Smirnov não encontramos diferenças significativas. Logo, qualquer que seja o estimador o valor aferido é aderente e estima a população total. Aliado à metodologia de marcação que não alterou o comportamento dos girinos, o presente estudo ajuda a preencher a necessidade de mais estudos na fase larvar dos anfíbios no Brasil, em especial no semiárido nordestino.

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“…The results pointed out by the Kaplan-Meier estimator were similar to those calculated by the modified model ofSmith-Gill & Berven (1979) and ensured that the failures (dying, interrupting, recovering development) were present in the model, not neglecting any of the results, which makes this model a better condition than the Life Table, which disregards all failures.If we chose the Life Table(LIMA et al, 2014) to follow the development of tadpoles, we would have grouped results and would not represent the exact survival time, with failures, for each monitored individual. This change in statistical analysis is recommended for non-parametric samples in which the sample is subject to a set of faults(ZAR, 2010;GOTELLI & ELLISON, 2016), so the predicted and Kaplan-Meier results fit and represent a strong model for evaluation of tadpole development.…”

mentioning

confidence: 99%

Influence of temperature on larval development of Pleurodema diplolister (amphibia, anura, leptodactylidae)

Lima¹,

Pederassi²,

Sousa³

et al. 2023

Cuad. Ed. Desar.

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The population fluctuations of amphibians were correlated with climatic changes, and among the aspects listed the global temperature change was one of the highlights. We submitted tadpoles of Pleurodema diplolister to aquatic thermal variations to establish the thermal limit that implies the direct influence of temperature on larval development, as could occur in the global temperature change. Natural lentic environments were monitored in a way to acquire the mean temperature of the water in an annual (tolerant) average (31°C) and in the reproduction (optimal) period (27°C) of the frogs. In lab conditions the tadpoles’ development were tested in four different temperatures: 20°C, 27°C, 31°C, and 40°C, corresponding to minimal, optimal, tolerant, and maximum temperatures, respectively. The survival time was established by the Kaplan-Meier method. The data were tested by the Chi-square test to establish the adherence of the results. The success rate calculated for 20°C temperature was 3.69%, at 27°C it was 62.33%, at 31°C it was 68% and at 40°C it was 1.35%. This demonstrates that there is an optimal temperature of larval development with a tolerance zone around it, which indicates that an increase in global temperature, immediately, will not stop the reproduction of this species.

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Longevity and survival curves of Rhinella icterica (Anura, Bufonidae) under laboratory conditions

Cited by 3 publications

References 10 publications

Method of tadpoles in a closed system with filtration

Method of tadpoles in a closed system with filtration

Estimation of a closed population size of tadpoles in temporary pond

Influence of temperature on larval development of Pleurodema diplolister (amphibia, anura, leptodactylidae)

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