­The gastromyzophorous tadpole of the pink harlequin frog from Suriname with comments on the taxonomy of Guianan Clade Atelopus (Amphibia, Bufonidae)

Lötters, Stefan; Plewnia, Amadeus; HÖNIG, ALANA; Jung, Alisha; LAUDOR, JÖRN; Ziegler, Thomas

doi:10.11646/zootaxa.5087.4.7

Cited by 3 publications

(1 citation statement)

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“…Alphataxonomic problems remain for some harlequin toads, e.g. A. hoogmoedi which could be more than one species 51 .…”

Section: Methodsmentioning

confidence: 99%

The amphibian extinction crisis is still an emergency

Lötters,

Plewnia,

Catenazzi

et al. 2023

Preprint

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Anthropogenic biodiversity loss is extreme in amphibians. Despite ongoing conservation action, it is difficult to determine where we stand in overcoming their extinction crisis 1,2. Extinction risk is not equally distributed across amphibians 3-5. Among the most threatened amphibians are the 131 Neotropical harlequin toads (Atelopus), many of which dramatically declined since the late 1980s with several considered possibly extinct 5,6. Recently, more than 30 species have been rediscovered7, raising hope for a reversing trend in the amphibian extinction crisis. We use harlequin toads, for which comprehensive past and present population status, threat and conservation action data are available, as a model for examining whether the amphibian extinction crisis is still in a state of emergency. We show that since 2004 no species has improved its population status, suggesting that the conservation community has not yet bent the curve. Threats such as pathogen spread and habitat change persist unabated; additionally, climate change is expected to be a future threat. More on-the-ground mitigation strategies need implementation, especially habitat protection and disease management, combined with captive conservation breeding. With harlequin toads serving as a model for amphibians with high extinction risk, it is clear that the amphibian extinction crisis is still underway.

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“…Alphataxonomic problems remain for some harlequin toads, e.g. A. hoogmoedi which could be more than one species 51 .…”

Section: Methodsmentioning

confidence: 99%

The amphibian extinction crisis is still an emergency

Lötters,

Plewnia,

Catenazzi

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

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Harlequin frog tadpoles—comparative buccopharyngeal morphology in the gastromyzophorous tadpoles of the genus Atelopus (Amphibia, Anura, Bufonidae), with discussion on the phylogenetic and evolutionary implication of characters

dos Santos Dias,

Anganoy-Criollo

2024

Sci Nat

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The Neotropical genus Atelopus is the most diverse genus of bufonids comprising 99 species. Tadpoles of these frogs are readily distinguished based on the presence of a belly sucker, used by them to stay attached to rocks in fast-flowing streams. Despite their intriguing biology, information about their anatomy is scarce and many morphological systems are unknown. We describe the buccopharyngeal cavity of five Atelopus species. The Atelopus buccopharyngeal cavity is characterized by (1) presence of a pendulum-like papillae in the prenarial arena, (2) presence of a glandular zone in the prenarial arena, (3) narial vacuities, (4) conical median ridge, (5) absence of buccal roof arena papillae, (6) absence of buccal roof pustulations, (7) single pair of infralabial papillae, (8) absence of lingual papillae, and (9) absence of pustulations in the buccal floor. We propose that characters 1, 2, and 3 are new synapomorphies for the genus. We also propose that the presence of a single pair of infralabial papillae is a synapomorphy for bufonid. Finally, we discuss the convergent evolution of gastromyzophorous and suctorial tadpoles withing anurans.

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Ongoing harlequin toad declines suggest the amphibian extinction crisis is still an emergency

Lötters,

Plewnia,

Catenazzi

et al. 2023

Commun Earth Environ

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Biodiversity loss is extreme in amphibians. Despite ongoing conservation action, it is difficult to determine where we stand in overcoming their extinction crisis. Among the most threatened amphibians are the 131 Neotropical harlequin toads. Many of them declined since the 1980s with several considered possibly extinct. Recently, more than 30 species have been rediscovered, raising hope for a reversing trend in the amphibian extinction crisis. We use past and present data available for harlequin toads (Atelopus), to examine whether the amphibian extinction crisis is still in an emergency state. Since 2004 no species has improved its population status, suggesting that recovery efforts have not been successful. Threats include habitat change, pathogen spread and climate change. More mitigation strategies need implementation, especially habitat protection and disease management, combined with captive conservation breeding. With harlequin toads serving as a model, it is clear that the amphibian extinction crisis is still underway.

show abstract

The gastromyzophorous tadpole of the pink harlequin frog from Suriname with comments on the taxonomy of Guianan Clade Atelopus (Amphibia, Bufonidae)

Cited by 3 publications

References 0 publications

The amphibian extinction crisis is still an emergency

The amphibian extinction crisis is still an emergency

Harlequin frog tadpoles—comparative buccopharyngeal morphology in the gastromyzophorous tadpoles of the genus Atelopus (Amphibia, Anura, Bufonidae), with discussion on the phylogenetic and evolutionary implication of characters

Ongoing harlequin toad declines suggest the amphibian extinction crisis is still an emergency

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­The gastromyzophorous tadpole of the pink harlequin frog from Suriname with comments on the taxonomy of Guianan Clade Atelopus (Amphibia, Bufonidae)

Cited by 3 publications

References 0 publications

The amphibian extinction crisis is still an emergency

The amphibian extinction crisis is still an emergency

Harlequin frog tadpoles—comparative buccopharyngeal morphology in the gastromyzophorous tadpoles of the genus Atelopus (Amphibia, Anura, Bufonidae), with discussion on the phylogenetic and evolutionary implication of characters

Ongoing harlequin toad declines suggest the amphibian extinction crisis is still an emergency

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The gastromyzophorous tadpole of the pink harlequin frog from Suriname with comments on the taxonomy of Guianan Clade Atelopus (Amphibia, Bufonidae)