Description of the Tadpole of Bufo rufus with Notes on Aggregative Behavior

Sazima, Iván

doi:10.2307/1565592

Cited by 16 publications

(11 citation statements)

References 5 publications

(6 reference statements)

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“…Although this first record is still not enough to generalize for all populations of the species, our observations agree with other studies conducted on other species of Phyllomedusinae, such as P. vaillanti, and even on other species of the genus Phasmahyla like P. guttata and P. jandaia (Lutz Lutz, 1939;Branch, 1983;Eterovick Sazima, 1999;Surova, 2006;Costa Carvalho-e-Silva, 2008) …”

supporting

confidence: 91%

“…Daylight has been shown to trigger aggregative behavior (Beiswenger, 1977;Branch, 1983;Eterovick Sazima, 1999;Surova, 2006) and to influence orientation of tadpoles in ponds (Katz et al, 1981;Wassersug et al, 1981). Low water visibility in ponds caused by diminishing of daylight or by increased water turbidity negatively affects tadpole aggregations, and may even cause dispersal of tadpoles (Beiswenger, 1977;Branch, 1983).…”

mentioning

confidence: 99%

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The diurnal aggregation behavior in Phasmahyla cochranae tadpoles (Anura: Hylidae)

Leão-Pires

Giaretta²,

Sawaya³

2017

bah

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We investigated schooling behavior of Phasm ahyla cochranae including its periodicity based on periodic regression models. The school structure and differences between day and night were discussed. We found that tadpoles formed aggregative schools, which were significantly more frequent during the day than at night. During the day, from 06:30 to 18:00 h, tadpoles formed one or two polarized schools at the water surface. Based on these results and on observations of specific behaviors, we suggest that daylight may be a significant environmental factor related to schooling behavior in P. cochranae, although this hypothesis needs to be further investigated.

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supporting

confidence: 91%

mentioning

confidence: 99%

The diurnal aggregation behavior in Phasmahyla cochranae tadpoles (Anura: Hylidae)

Leão-Pires

Giaretta²,

Sawaya³

2017

bah

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“…, Bokermann & Sazima 1973a,b, 1978; Caramaschi & Sazima 1984; Caramaschi, 1985; Eterovick & Sazima 1998; Sazima & Bokerman 1977; Sazima, 1978, 1982; Sazima & Caramaschi 1986). About 25 yr later (1996–2000), Paula C. Eterovick and collaborators studied ecological aspects of anuran community ecology and tadpoles in the same area (Eterovick & Sazima 1999; Eterovick, 2000, 2001, 2004; Eterovick & Brandão 2001; Eterovick & Fernandes 2001; Eterovick, 2002; Eterovick et al 2002; Eterovick 2003; Eterovick & Barros 2003). These studies provided a long‐term survey of tadpoles and adult frogs from the area, with many sampling points in common, creating the opportunity to compare data on species' occurrences for two periods almost a quarter of a century apart—a situation never before analyzed for amphibians in Brazil.…”

Section: Frogs From the Serra Do Cipó—a New Case Studymentioning

confidence: 99%

Amphibian Declines in Brazil: An Overview¹

et al. 2005

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Population declines have previously been reported for at least 31 amphibian species in Brazil, in the families Leptodactylidae (19), Hylidae (7), Centrolenidae (2), Dendrobatidae (2), and Bufonidae (1). In five Brazilian museum collections, we found no entries of new records dating back to at least 15 yr ago for 13 of these species. We suggest that these taxa be studied in more detail to verify their status and to generate basic ecological data. Museum data indicate that the remaining species have been recently found in areas of reported crashes, or elsewhere. Several apparent declines in Brazil can be associated with habitat loss, interspecific interactions, natural fluctuations, or lack of intensive sampling. Personal observations and field data also indicate possible declines in the states of Paraná and Ceará as well as in highlands within the Cerrado biome, in the state of Minas Gerais. Records suggest declines of montane and stream‐associated populations of Brazilian amphibians in apparently pristine habitats. Field work is necessary to confirm these cases and to examine whether factors associated with similar extinctions in other parts of the globe—such as pathogens and climate change—are also related to local disappearances. To clarify pending questions and perhaps circumvent new cases, it is important to invest in short‐ and long‐term field studies, and in the maintenance and expansion of museum collections.

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“…The number of instances when each tadpole species used each microhabitat type was also registered. A single species studied here (Bufo rufus Garman) shows aggregative behaviour, but the aggregations can occupy areas up to 60 m 2 (Eterovick & Sazima 1999), including many microhabitat types, and they were sampled in this study under such circumstances. It is possible that some individuals of species with longer developmental periods have been observed more than once, since not all tadpoles recorded have been collected, but only specimens taken for identification purposes.…”

Section: Study Site and Sampling Proceduresmentioning

confidence: 99%

Niche occupancy in south-eastern Brazilian tadpole communities in montane-meadow streams

Eterovick

Barros

2003

J. Trop. Ecol.

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Microhabitat use by tadpole species was investigated in streams of montane meadows of the Serra do Cipó, south-eastern Brazil. Microhabitats were classified into 24 types based on water depth, current, aquatic vegetation and substrate type, and quantified in 16 streams. A total of 844 tadpoles from 19 species was recorded, as well as microhabitat types used. Tadpoles, from all species pooled, used microhabitat types in the proportions available in the set of sampled streams. Diversity of microhabitats used was considered as a measure of niche breadth for tadpoles, and microhabitat diversity in streams was interpreted as available niche space. For the most part, species used microhabitats in different proportions, and conspecifics differed in microhabitat use among different streams. Neither niche breadths nor niche overlaps of tadpoles could be related to the number of species occupying streams. Thus not all available niche space may be occupied by tadpole species. More generalist species (those with broader niches) did not generally occupy more streams. Behavioural flexibility of tadpoles in microhabitat use may be a response to the unpredictability of the montane-meadow stream habitat. The role of adult anurans in choosing oviposition sites may also influence the distribution of tadpole species among streams.

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Description of the Tadpole of Bufo rufus with Notes on Aggregative Behavior

Cited by 16 publications

References 5 publications

The diurnal aggregation behavior in Phasmahyla cochranae tadpoles (Anura: Hylidae)

The diurnal aggregation behavior in Phasmahyla cochranae tadpoles (Anura: Hylidae)

Amphibian Declines in Brazil: An Overview¹

Niche occupancy in south-eastern Brazilian tadpole communities in montane-meadow streams

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Description of the Tadpole of Bufo rufus with Notes on Aggregative Behavior

Cited by 16 publications

References 5 publications

The diurnal aggregation behavior in Phasmahyla cochranae tadpoles (Anura: Hylidae)

The diurnal aggregation behavior in Phasmahyla cochranae tadpoles (Anura: Hylidae)

Amphibian Declines in Brazil: An Overview1

Niche occupancy in south-eastern Brazilian tadpole communities in montane-meadow streams

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Product

Resources

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Amphibian Declines in Brazil: An Overview¹