Underwater acoustic communication in the macrophagic carnivorous larvae of Ceratophrys ornata (Anura: Ceratophryidae)

Natale, Guillermo Sebastián; Alcalde, Leandro; Herrera, Raul; Cajade, Rodrigo; Schaefer, Eduardo Federico; Marangoni, Federico; Trudeau, Vance L.

doi:10.1111/j.1463-6395.2009.00445.x

Cited by 28 publications

(23 citation statements)

References 22 publications

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“…In their laboratory study, Natale et al (2011) offered as food tadpoles of seven different species of frogs (Table 2) known to share ponds with C. ornata in nature, all of which were consumed. These authors argued that the occurrence in nature of cannibalism by C. ornata larvae is likely rare because of low population densities of these tadpoles relative to the tadpoles of other synchronously reproducing frogs with high reproductive potential.…”

Section: Ceratophrys Ornatamentioning

confidence: 99%

“…Those of species of Ceratophrys and Lepidobatrachus possess morphologies indicative of their macrophagous and carnivorous habits (Cei, 1968;Rubial and Thomas, 1988;Altig and McDiarmid, 1999;Wild, 1997aWild, , 1997bNatale et al, 2011;Wassersug and Heyer, 1988). Tadpoles of the species of Lepidobatrachus have some of the most distinctive body morphologies of any anuran larvae, with their wide, dorsoventrally flattened head and lack of keratinized mouthparts, which allow them to engulf prey whole (Cei, 1968;Rubial and Thomas, 1988).…”

Section: Introductionmentioning

confidence: 98%

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On the Diet of the Frogs of the Ceratophryidae:Synopsis and New Contributions

Schalk

Montaña

Klemish

et al. 2014

South American Journal of Herpetology

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The frogs of the family Ceratophryidae (comprised of three genera containing 12 species) are well known for their voracious feeding behavior and unique morphologies in both larval and post-metamorphic life stages. Nevertheless, relatively little is known about the diet of these species, especially in nature. We summarized the current knowledge of the diet of larval and post-metamorphic ceratophryids in both natural and experimental settings by conducting a literature review, specimen dissections, and field observations. Prior to this study, diet information did not exist for one fourth of the species in the family: Ceratophrys calcarata, Ceratophrys joazeirensis Ceratophrys stolzmanni, and Ceratophrys testudo. We add, for the first time, information on the diet of Ceratophrys calcarata. In addition, our survey revealed that relatively few detailed studies with large sample sizes have been conducted on the diet of these frogs. Frequently, knowledge of the diet of a species is derived from palatability experiments using captive individuals (often a single individual). From those diet studies that were conducted under natural conditions, ceratophryids can be classified as generalist, opportunistic predators, often preying on a wide variety of invertebrate and vertebrate prey. All species of ceratophryids for which we obtained information on diet were found to consume vertebrates, with anuran prey occurring in nearly all species. Even less is known about the diet of the tadpoles of these species; while cannibalism is assumed to be widespread, we found evidence for cannibalism at the larval stage in only three species. Future studies should attempt to understand the trophic ecology of these species under natural scenarios at both life stages, and an ontogenetic approach using individuals across multiple size classes could elucidate the niche shifts associated with these species from larva to adult.

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Section: Ceratophrys Ornatamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

On the Diet of the Frogs of the Ceratophryidae:Synopsis and New Contributions

Schalk

Montaña

Klemish

et al. 2014

South American Journal of Herpetology

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“…Acoustic cues (also referred to as sonic or auditory cues) may also play a role in predator detection if sound is generated by the predator itself or by prey under attack (e.g. Hoy, 1992; Natale et al ., 2011; Wilson et al ., 2011).…”

Section: Introductionmentioning

confidence: 99%

Visual cues contribute to predator detection in anuran larvae

Hettyey

Rölli

Thürlimann

et al. 2012

Biol J Linn Soc Lond

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The ability of prey to detect predators directly affects their probability of survival. Chemical cues are known to be important for predator detection in aquatic environments, but the role of other potential cues is controversial. We tested for changes in behaviour of Rana temporaria tadpoles in response to chemical, visual, acoustic, and hydraulic cues originating from dragonfly larvae (Aeshna cyanea) and fish (Gasterosteus aculeatus). The greatest reduction in tadpole activity occurred when all cues were available, but activity was also significantly reduced by visual cues only. We did not find evidence for tadpoles lowering their activity in response to acoustic and hydraulic cues. There was no spatial avoidance of predators in our small experimental containers. The results show that anuran larvae indeed use vision for predator detection, while acoustic and hydraulic cues may be less important. Future studies of predator-induced responses of tadpoles should not only concentrate on chemical cues but also consider visual stimuli.

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“…Also, juvenile spadefoot toads (Pelobates fuscus) emit feeding calls in the presence of prey, probably in the context of a general arousal (ten Hagen et al 2016). The underwater calls of tadpoles of Ceratophrys (Natale et al 2011;Salgado-Costa et al 2014) probably fit into the warning call subcategory, but might also in part represent feeding calls.…”

Section: Functional Categories Of Anuran Vocalizationsmentioning

confidence: 99%

The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice

Köhler

Jansen

Rodríguez³

et al. 2017

Zootaxa

425

407

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Vocalizations of anuran amphibians have received much attention in studies of behavioral ecology and physiology, but also provide informative characters for identifying and delimiting species. We here review the terminology and variation of frog calls from a perspective of integrative taxonomy, and provide hands-on protocols for recording, analyzing, comparing, interpreting and describing these sounds. Our focus is on advertisement calls, which serve as premating isolation mechanisms and, therefore, convey important taxonomic information. We provide recommendations for terminology of frog vocalizations, with call, note and pulse being the fundamental subunits to be used in descriptions and comparisons. However, due to the complexity and diversity of these signals, an unequivocal application of the terms call and note can be challenging. We therefore provide two coherent concepts that either follow a note-centered approach (defining uninterrupted units of sound as notes, and their entirety as call) or a call-centered approach (defining uninterrupted units as call whenever they are separated by long silent intervals) in terminology. Based on surveys of literature, we show that numerous call traits can be highly variable within and between individuals of one species. Despite idiosyncrasies of species and higher taxa, the duration of calls or notes, pulse rate within notes, and number of pulses per note appear to be more static within individuals and somewhat less affected by temperature. Therefore, these variables might often be preferable as taxonomic characters over call rate or note rate, which are heavily influenced by various factors. Dominant frequency is also comparatively static and only weakly affected by temperature, but depends strongly on body size. As with other taxonomic characters, strong call divergence is typically indicative of species-level differences, whereas call similarities of two populations are no evidence for them being conspecific. Taxonomic conclusions can especially be drawn when the general advertisement call structure of two candidate species is radically different and qualitative call differences are thus observed. On the other hand, quantitative differences in call traits might substantially vary within and among conspecific populations, and require careful evaluation and analysis. We provide guidelines for the taxonomic interpretation of advertisement call differences in sympatric and allopatric situations, and emphasize the need for an integrative use of multiple datasets (bio-acoustics, morphology, genetics), particularly for allopatric scenarios. We show that small-sized frogs often emit calls with frequency components in the ultrasound spectrum, although it is unlikely that these high frequencies are of biological relevance for the majority of them, and we illustrate that detection of upper harmonics depends also on recording distance because higher frequencies are attenuated more strongly. Bioacoustics remains a prime approach in integrative taxonomy of anurans if uncertainty due to possible intraspecific variation and technical artifacts is adequately considered and acknowledged.

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Underwater acoustic communication in the macrophagic carnivorous larvae of Ceratophrys ornata (Anura: Ceratophryidae)

Cited by 28 publications

References 22 publications

On the Diet of the Frogs of the Ceratophryidae:Synopsis and New Contributions

On the Diet of the Frogs of the Ceratophryidae:Synopsis and New Contributions

Visual cues contribute to predator detection in anuran larvae

The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice

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