Comparative larval morphology in Madagascan frogs of the genus Mantella (Amphibia: Mantellidae)

Jovanovic, Olga; Glos, Julian; Glaw, Frank; Randrianiaina, Roger-Daniel; Vences, Miguel

doi:10.11646/zootaxa.2124.1.2

Cited by 6 publications

(5 citation statements)

References 14 publications

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“…Likewise, a terminal oral disc is known from surface-feeding tadpoles in lentic environments [ 7 ], so that rather this character is associated with feeding than with lentic vs. lotic environments. Moreover, the arched dorsal jaw sheath does not determinate these tadpoles’ aquatic habitat, as it is a common larval character of the entire subfamily Mantellinae [ 6 , 27 , 28 ], comprising both lentic and lotic species. The specialised papillae of Chonomantis tadpoles can also be explained by the particular way of feeding [ 6 , 18 ].…”

Section: Discussionmentioning

confidence: 99%

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Morphology of lentic and lotic tadpoles from Madagascar

LAUDOR¹,

Schulze²,

Veith³

et al. 2021

BMC Zool

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Background The morphology of anuran larvae is suggested to differ between species with tadpoles living in standing (lentic) and running (lotic) waters. To explore which character combinations within the general tadpole morphospace are associated with these habitats, we studied categorical and metric larval data of 123 (one third of which from lotic environments) Madagascan anurans. Results Using univariate and multivariate statistics, we found that certain combinations of fin height, body musculature and eye size prevail either in larvae from lentic or lotic environments. Conclusion Evidence for adaptation to lotic conditions in larvae of Madagascan anurans is presented. While lentic tadpoles typically show narrow to moderate oral discs, small to medium sized eyes, convex or moderately low fins and non-robust tail muscles, tadpoles from lotic environments typically show moderate to broad oral discs, medium to big sized eyes, low fins and a robust tail muscle.

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Section: Discussionmentioning

confidence: 99%

“…Google Scholar and Web of Science were searched for “tadpole” and “Madagascar”, revealing in 31 publications dealing with larval descriptions of 123 Madagascan anurans [ 18 , 20 – 23 , 27 , 28 , 32 , 33 , 35 – 57 ].…”

Section: Methodsmentioning

confidence: 99%

Morphology of lentic and lotic tadpoles from Madagascar

LAUDOR¹,

Schulze²,

Veith³

et al. 2021

BMC Zool

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“…A magnitude of descriptions of the larval stages of Madagascan frogs have been recently published ( Andreone et al 2002 , Glos and Linsenmair 2005 , Raharivololoniaina et al 2003 , 2006 , Thomas et al 2005 , 2006 , Altig and McDiarmid 2006 , Vejarano et al 2006a , b , c , Glos et al 2007 , Schmidt et al 2008 , 2009a , b , Grosjean and Vences 2009 , Jovanovic et al 2009 , Rasolonjatovo et al 2010 , Grosjean et al 2006 , 2007 , 2011a , b , Randrianiaina et al 2007 , 2009a , b , 2011a , b , c ). While some of them merely intended to increase general knowledge on Madagascan tadpoles, others attempted to classify the tadpoles into ecomorphological guilds.…”

Section: Discussionmentioning

confidence: 99%

Diversity of the strongly rheophilous tadpoles of Malagasy tree frogs, genus Boophis (Anura, Mantellidae), and identification of new candidate species via larval DNA sequence and morphology

Randrianiaina¹,

Strauß²,

Glos³

et al. 2012

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This study provides detailed morphological descriptions of previously unknown tadpoles of the treefrog genus Boophis Tschudi and analyses of habitat preferences of several of these tadpoles in Ranomafana National Park. A total of twenty-two tadpoles determined via DNA barcoding are characterized morphologically herein, fourteen of them for the first time. Twelve of these tadpoles belong to taxonomically undescribed candidate species which in several cases are so far only known from their larval stages. Our data show that the larvae of some of these candidate species occur syntopically yet maintaining a clearly correlated genetic and morphological identity, suggesting that they indeed are true biological and evolutionary species. Tadpoles considered to belong to the “adherent” ecomorphological guild inhabit fast-running waters and their oral disc is commonly to continuously attached to the rocky substrate, supposedly to keep their position in the water current. Some of these species are characterized by the presence of a dorsal gap of papillae and the absence of an upper jaw sheath. This guild includes the tadpoles of the Boophis albipuncatus group ( Boophis ankaratra , Boophis schuboeae , Boophis albipunctatus , Boophis sibilans , Boophis luciae ), and of the Boophis mandraka group ( Boophis sambirano and six candidate species related to this species and to Boophis mandraka ). Tadpoles considered belonging to the “suctorial” guild inhabit fast-running waters where they use frequently their oral disc to attach to the substrate. They have an enlarged oral disc without any dorsal gap, including two nominal species ( Boophis marojezensis , Boophis vittatus ), and five candidate species related to Boophis marojezensis . An ecological analysis of the tadpoles of Boophis luciae , Boophis schuboeae and Boophis marojezensis [Ca51 JQ518198] from Ranomafana National Park did not provide evidence for a clear preference of these tadpoles to the fast flowing microhabitat sections of the stream, although the tadpoles discussed in this study are typically caught in this habitat.

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“…It is well known due to its aposematic orange-red colouration and presence in the international pet trade [ 25 ]. Potential predators for the species would be reptile species such as Zonosaurus madagascariensis and Tamnosophis lateralis [ 26 ]. Its distribution is restricted to a fragment of humid forest around seasonally flooded ponds surrounded by degraded land [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

The tonic immobility test: Do wild and captive golden mantella frogs (Mantella aurantiaca) have the same response?

2017

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Adaptations to captivity that reduce fitness are one of many reasons, which explain the low success rate of reintroductions. One way of testing this hypothesis is to compare an important behavioural response in captive and wild members of the same species. Thanatosis, is an anti-predator strategy that reduces the risk of death from predation, which is a common behavioral response in frogs. The study subjects for this investigation were captive and wild populations of Mantella aurantiaca. Thanatosis reaction was measured using the Tonic Immobility (TI) test, a method that consists of placing a frog on its back, restraining it in this position for a short period of time and then releasing it and measuring how much time was spent feigning death. To understand the pattern of reaction time, morphometric data were also collected as body condition can affect the duration of thanatosis. The significantly different TI times found in this study, one captive population with shorter responses, were principally an effect of body condition rather than being a result of rearing environment. However, this does not mean that we can always dismiss the importance of rearing environment in terms of behavioural skills expressed.

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Comparative larval morphology in Madagascan frogs of the genus Mantella (Amphibia: Mantellidae)

Cited by 6 publications

References 14 publications

Morphology of lentic and lotic tadpoles from Madagascar

Morphology of lentic and lotic tadpoles from Madagascar

Diversity of the strongly rheophilous tadpoles of Malagasy tree frogs, genus Boophis (Anura, Mantellidae), and identification of new candidate species via larval DNA sequence and morphology

The tonic immobility test: Do wild and captive golden mantella frogs (Mantella aurantiaca) have the same response?

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