Larval Development in Bufo woodhousei fowleri and Scaphiopus holbrooki holbrooki

Gosner, Kenneth L.; Black, Irving H.

doi:10.2307/1440034

Cited by 9 publications

(6 citation statements)

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“…However, similar variations in labial tooth row formula are also known from other anurans, e.g. species in the family Pelobatidae (Bresler & Bragg, 1954; Gosner & Black, 1954; Bragg & Hayes, 1963; Bragg, Mathews & Kingsinger, 1963; Hampton & Volpe, 1963), and ontogenetic changes as well as interindividual variation at equivalent stages of development have been demonstrated in Hoplobatrachus (Lamotte & Zuber‐Vogeli, 1954; Dutta & Mohanty‐Hejmadi, 1984).…”

Section: Discussionmentioning

confidence: 63%

Evolutionary significance of oral morphology in the carnivorous tadpoles of tiger frogs, genus Hoplobatrachus (Ranidae)

Grosjean¹,

Vences²,

Dubois³

2004

Biological Journal of the Linnean Society

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We describe the larval stages of three species of the Asian-African tiger frogs Hoplobatrachus chinensis, H. occipitalis and H. tigerinus . The tadpoles of all three species are very similar, with peculiar oral features: (1) double rows of needle-like labial teeth, (2) strong emarginations on the large jaw sheaths and (3) keratinized spurs on the buccal floor. Characters 1 and 2 (and perhaps 3) are probably related to the carnivorous habits of these tadpoles. A molecular phylogeny based on 2430 base pairs of two nuclear and four mitochondrial genes corroborated monophyly of Asian and African Hoplobatrachus, and identified Euphlyctis as their sister group. Tadpoles of the latter genus lack buccal spurs and double labial tooth rows but share large jaw sheaths, the upper with a medial projection. Therefore, the common ancestor of Euphlyctis and Hoplobatrachus probably was also characterized by this state, and may have been facultatively carnivorous. Further carnivorous specializations in Hoplobatrachus could explain why tiger frogs have been so successful in populating arid environments where ponds are at high risk of desiccation. Larval morphology may prove to be the key innovation which enabled them to disperse, in the Late Cenozoic, into their current very wide distribution area in Asia and Africa.

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Section: Discussionmentioning

confidence: 63%

Evolutionary significance of oral morphology in the carnivorous tadpoles of tiger frogs, genus Hoplobatrachus (Ranidae)

Grosjean¹,

Vences²,

Dubois³

2004

Biological Journal of the Linnean Society

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“…In most species with a low number of keratodont rows (e.g. 2/3), the final number of rows is reached at stage 25 (Gosner and Black, 1954;Limbaugh and Volpe, 1957;Sedra and Michael, 1961), 26 (Zweifel, 1961) or immediately after (this paper). However, in species with a higher number of rows, their number increases longer during ontogeny and shows more variation (Gosner and Black, 1954;Volpe and Harvey, 1958;Dutta and Mohanty-Hejmadi, 1984;Brown, 1989;Hall et al, 1997), even if a certain stability of the keratodont formulae is observed by stage 33 (Grosjean, 2001).…”

Section: General Morphology and Oral Diskmentioning

confidence: 80%

“…A number of previous studies have focused on variations of tadpole characters during development (Nichols, 1937;Bresler and Bragg, 1954;Gosner and Black, 1954;Limbaugh and Volpe, 1957;Gosner and Rossman, 1960;Zweifel, 1961Zweifel, , 1970Gaudin, 1965;Agarwal and Niazi, 1980;Dutta and Mohanty-Hejmadi, 1984;Tubbs et al, 1993;Hall et al, 1997). Ontogenetic variation has important implications for the use of tadpole characters in taxonomy.…”

Section: Introductionmentioning

confidence: 99%

The choice of external morphological characters and developmental stages for tadpole-based anuran taxonomy: a case study in Rana (Sylvirana) nigrovittata (Blyth, 1855) (Amphibia, Anura, Ranidae)

Grosjean

2005

Contributions to Zoology

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The morphology of tadpoles has long received too little attention in taxonomic and phylogenetic contexts, beyond the use of Orton’s general tadpole types, despite the potential of larval characters for resolving problems in systematics. A possible explanation for this neglect is the ontogenetic variation of external morphology. In order to understand the value of larval characters in taxonomy and systematics, it is necessary to determine the developmental stage at which characters reach their definitive size, form and colour before meaningful comparisons can be made within and between species. Here I use the tadpole of Rana (Sylvirana) nigrovittata as a model organism to assess ontogenetic character variation. Morphometric measurements were taken, and external oral and internal buccal characters were assessed separately for each developmental stage from 26 to 38. Coefficients of variation were calculated for each morphometric character at each stage of development to test the character’s efficiency in reflecting the morphology of the tadpole. Most morphometric characters taken from the body described the shape of the animal well and varied little among individuals, whereas those taken from the tail were less reliable and those of the oral disk were quite variable due to contraction during fixation. A developmental 'climax' for most characters was reached by specimens between stages 32-40, indicating that they are best suited for morphological intra- and interspecific comparisons.

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“…In O. cordobae, as said before, this peak occurs a little later at Stage 41. In the majority of anuran species this peak occurs between these two stages [e.g., Bokermanohyla circundata (Cope, 1871) - At Stage 25 the mouthparts of M. alipioi is already fully formed, as the labial tooth rows reached their definitive number, like most species with a 2/3 tooth row pattern (Gosner and Black 1954, Sedra and Michael 1961, Tubbs et al 1993, Gómez et al 2016. Although the pigmentation of the jaw sheaths is still limited to their edges, they are completed at the next Stage.…”

Section: Larval Developmentmentioning

confidence: 99%

Reproductive notes and larval development of Macrogenioglottus alipioi (Anura: Odontophrynidae) from the northern Atlantic forest

et al. 2022

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The neotropical monotypic genus Macrogenioglottus, described to enclose M. alipioi, is a forest leaf litter frog with a wide geographic distribution in eastern Brazil, despite being considered a rare species. Herein, we present some reproductive data of this species from a population of the north of the São Francisco River, Northeastern Brazil. We present information on the amplexus, egg clutch, advertisement, and release calls, along with a description of its larval development. Adults were observed only after heavy and continuous rains, in a temporary pond located inside the forest. Males call in chorus at the edge of the pond. The advertisement call consists of a pulsatile single note, with no substantial variation in relation to the other population of the species, but which promptly differs this genus from the remaining Odontophrynidae. The amplexus is axillary. One female deposited 298 pigmented eggs in a plastic bag. The tadpole reaches its larger size at Stage 39, being the largest tadpole within the family. At the end of metamorphosis, the froglet snout–vent length is equivalent to tadpole total length at stage 26–27, indicating substantial postmetamorphic growth until adulthood. Data on body size of males and females are also provided. The uniqueness of some larval traits and mainly on some call attributes supports the systematic distinction of Macrogenioglottus.

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Larval Development in Bufo woodhousei fowleri and Scaphiopus holbrooki holbrooki

Cited by 9 publications

References 0 publications

Evolutionary significance of oral morphology in the carnivorous tadpoles of tiger frogs, genus Hoplobatrachus (Ranidae)

Evolutionary significance of oral morphology in the carnivorous tadpoles of tiger frogs, genus Hoplobatrachus (Ranidae)

The choice of external morphological characters and developmental stages for tadpole-based anuran taxonomy: a case study in Rana (Sylvirana) nigrovittata (Blyth, 1855) (Amphibia, Anura, Ranidae)

Reproductive notes and larval development of Macrogenioglottus alipioi (Anura: Odontophrynidae) from the northern Atlantic forest

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