Variação morfológica em Telmatobius atahualpai (Anura: Telmatobiidae), com comentários sobre suas relações filogenéticas e sinapomorfias para o gênero.

Aguilar, César; Catenazzi, Alessandro; Venegas, Pablo J.; Siu-Ting, Karen

doi:10.11606/issn.2316-9079.v11i1p37-49

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…The phylogenetic reconstructions including data from T. achachila point to ancestral Telmatobius also inhabiting wetlands surrounded by forests at relatively mid‐low elevations (below 2500 m ASL), despite extant species in the early diverging T. verrucosus species group being found at elevations up to 3500–4000 m ASL (Wiens 1993; De la Riva 2005; Aguilar et al . 2012). This agrees with the forest origin proposed for the anuran species of the Andean highlands (Duellman 1979; Cei 1986; Lynch 1986; De la Riva et al .…”

Section: Discussionmentioning

confidence: 99%

“…Lynch 1971; Trueb 1979; Wiens 1993; Lavilla & Barrionuevo 2005; Aguilar et al . 2012; De la Riva et al . 2012; Barrionuevo 2017a).…”

Section: Discussionunclassified

“…2005; Barrionuevo & Baldo 2009; Aguilar et al . 2012; De la Riva et al . 2012; Barrionuevo 2013, 2018; Báez & Gómez 2018).…”

Section: Discussionunclassified

“…2014) and morphological (Aguilar & Valencia 2009; Barrionuevo 2017a) and phylogenetic cladistic analyses recovered four major clades in the genus: (1) the T. verrucosus group, including mostly semiaquatic species from the cloud forests and adjacent humid paramos in Bolivia and Peru (De la Riva 2005; Aguilar et al . 2012); (2) the T. bolivianus group, with primarily aquatic forms inhabiting streams in mountain forests and other habitats at intermediate elevations in Bolivia and Argentina (De la Riva 2005; Lavilla & Barrionuevo 2005); (3) the T. macrostomus group, mostly aquatic species from the Andean highlands in Peru (Aguilar & Valencia 2009; Barrionuevo 2017a); and (4) the T. marmoratus group, including the T. hintoni and T. zapahuirensis groups of Sáez et al . (2014), mainly consisting of aquatic species from the dry Altiplano‐Puna highlands in Peru, Bolivia, Chile and Argentina (De la Riva 2005; Lavilla & Barrionuevo 2005; Formas et al .…”

Section: Figmentioning

confidence: 99%

“…As mentioned above, we interpret the holotype (MNHN‐Bol‐V 012795) as representing a male adult, based on enlarged lateral and medial crests of the humerus, which are typical of the male of several species of Telmatobius (Lavilla & Ergueta Sandoval 1999; Barrionuevo & Baldo 2009; Aguilar et al . 2012; De la Riva et al . 2012; Barrionuevo 2013; Fig.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

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A new early water frog (Telmatobius) from the Miocene of the Bolivian Altiplano

Gómez,

Ventura,

Turazzini

et al. 2024

Papers in Palaeontology

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We describe the new frog Telmatobius achachila sp. nov. from the late Middle to earliest Late Miocene of Achiri, based on a partial skeleton found at 3960 m above sealevel in the Bolivian Altiplano. This skeleton, attributed to a male adult, constitutes the first documented fossil record of the speciose living genus Telmatobius, endemic to the Andean Cordillera and the Altiplano. Phylogenetic analysis confirms the new species as being part of the crown group, and diverging both later than the T. verrucosus group and earlier than the T. bolivianus, T. marmoratus and T. macrostomus groups. Coupled with its accurate stratigraphic provenance and age, this phylogenetic position provides a relevant calibration point for timing the evolutionary history of these highland, mostly aquatic frogs. The skeleton of T. achachila indicates that several of the osteological peculiarities of extant Telmatobius were already acquired at c. 12 Ma, including some that might be linked to their aquatic lifestyle. Together with mixed montane–rainforest pollen vegetation uncovered in the same level, this fossil specimen further provides key data enabling a more accurate reconstruction of ancestral habitats and elevation ranges of Telmatobius, agreeing with the previously postulated conditions in which these water frogs might have first evolved. Ultimately, this discovery adds to the sparse evidence of a humid tropical Bolivian Altiplano just prior to: (1) the Late Miocene uplift pulse of the Central Altiplano; and (2) the drastic climate deterioration that occurred from Late Miocene time onward, leading to the harsh highland‐steppe environments reigning there today.

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Section: Discussionmentioning

confidence: 99%

“…Lynch 1971; Trueb 1979; Wiens 1993; Lavilla & Barrionuevo 2005; Aguilar et al . 2012; De la Riva et al . 2012; Barrionuevo 2017a).…”

Section: Discussionunclassified

“…2005; Barrionuevo & Baldo 2009; Aguilar et al . 2012; De la Riva et al . 2012; Barrionuevo 2013, 2018; Báez & Gómez 2018).…”

Section: Discussionunclassified

Section: Figmentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

See 3 more Smart Citations

A new early water frog (Telmatobius) from the Miocene of the Bolivian Altiplano

Gómez,

Ventura,

Turazzini

et al. 2024

Papers in Palaeontology

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Evolution and Conservation on Top of the World: Phylogeography of the Marbled Water Frog (Telmatobius marmoratusSpecies Complex; Anura, Telmatobiidae) in Protected Areas of Chile

Victoriano

Muñoz-Mendoza

Sáez

et al. 2015

JHERED

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The Andean Altiplano has served as a complex setting throughout its history, driving dynamic processes of diversification in several taxa. We investigated phylogeographic processes in the Telmatobius marmoratus species complex occurring in this region by studying the geographic patterns of genetic variability, genealogies, and historical migration, using the cytochrome b (cyt-b) gene as a marker. DNA sequences from Telmatobius gigas and Telmatobius culeus, Bolivian species with an uncertain taxonomic status, were also included. Additionally, we evaluated the phylogenetic diversity (PD) represented within Chilean protected areas and the complementary contribution from unprotected populations. Phylogenetic reconstructions from 148 cyt-b sequences revealed 4 main clades, one of which corresponded to T. culeus. T. gigas was part of T. marmoratus clade indicating paraphyletic relationships. Haplotypes from Chilean and Bolivian sites were not reciprocally monophyletic. Geographic distribution of lineages, spatial Bayesian analysis, and migration patterns indicated that T. marmoratus displays a weaker geographic structure than expected based on habitat distribution and physiological requirements. Demographic and statistical phylogeography analyses pointed out to a scenario of recent population expansion and high connectivity events of a more recent age than the post Last Glacial Maximum, probably associated to more humid events in Altiplano. PD of T. marmoratus populations within protected areas represents 55.6% of the total estimated PD. The unprotected populations that would contribute the most to PD are Caquena and Quebe (21%). Recent evolutionary processes and paleoclimatic changes, potentially driving shifts in habitat connectivity levels and population sizes, could explain the phylogeographic patterns recovered herein.

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Intrasexually selected weapons

2018

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We propose a practical concept that distinguishes the particular kind of weaponry that has evolved to be used in combat between individuals of the same species and sex, which we term intrasexually selected weapons (ISWs). We present a treatise of ISWs in nature, aiming to understand their distinction and evolution from other secondary sex traits, including from 'sexually selected weapons', and from sexually dimorphic and monomorphic weaponry. We focus on the subset of secondary sex traits that are the result of same-sex combat, defined here as ISWs, provide not previously reported evolutionary patterns, and offer hypotheses to answer questions such as: why have only some species evolved weapons to fight for the opposite sex or breeding resources? We examined traits that seem to have evolved as ISWs in the entire animal phylogeny, restricting the classification of ISW to traits that are only present or enlarged in adults of one of the sexes, and are used as weapons during intrasexual fights. Because of the absence of behavioural data and, in many cases, lack of sexually discriminated series from juveniles to adults, we exclude the fossil record from this review. We merge morphological, ontogenetic, and behavioural information, and for the first time thoroughly review the tree of life to identify separate evolution of ISWs. We found that ISWs are only found in bilateral animals, appearing independently in nematodes, various groups of arthropods, and vertebrates. Our review sets a reference point to explore other taxa that we identify with potential ISWs for which behavioural or morphological studies are warranted. We establish that most ISWs come in pairs, are located in or near the head, are endo- or exoskeletal modifications, are overdeveloped structures compared with those found in females, are modified feeding structures and/or locomotor appendages, are most common in terrestrial taxa, are frequently used to guard females, territories, or both, and are also used in signalling displays to deter rivals and/or attract females. We also found that most taxa lack ISWs, that females of only a few species possess better-developed weapons than males, that the cases of independent evolution of ISWs are not evenly distributed across the phylogeny, and that animals possessing the most developed ISWs have non-hunting habits (e.g. herbivores) or are faunivores that prey on very small prey relative to their body size (e.g. insectivores). Bringing together perspectives from studies on a variety of taxa, we conceptualize that there are five ways in which a sexually dimorphic trait, apart from the primary sex traits, can be fixed: sexual selection, fecundity selection, parental role division, differential niche occupation between the sexes, and interference competition. We discuss these trends and the factors involved in the evolution of intrasexually selected weaponry in nature.

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Variação morfológica em Telmatobius atahualpai (Anura: Telmatobiidae), com comentários sobre suas relações filogenéticas e sinapomorfias para o gênero.

Cited by 5 publications

References 14 publications

A new early water frog (Telmatobius) from the Miocene of the Bolivian Altiplano

A new early water frog (Telmatobius) from the Miocene of the Bolivian Altiplano

Evolution and Conservation on Top of the World: Phylogeography of the Marbled Water Frog (Telmatobius marmoratusSpecies Complex; Anura, Telmatobiidae) in Protected Areas of Chile

Intrasexually selected weapons

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