Glassfrogs of Ecuador: Diversity, Evolution, and Conservation

Diversity, Journal Year: 2020, Volume and Issue: 12(6), P. 222 - 222

Published: June 2, 2020

Glassfrogs (family: Centrolenidae) represent a fantastic radiation (~150 described species) of Neotropical anurans that originated in South America and dispersed into Central America. In this study, we review the systematics Ecuadorian glassfrogs, providing species accounts all 60 species, including three new herein. For provide information on evolution, morphology, biology, conservation, distribution. We present molecular phylogeny for Centrolenidae address cryptic diversity within family. employ candidate system designate 24 putative require further study to determine their status. find that, some cases, currently recognized lack justification; specifically, place Centrolene gemmata scirtetes under synonymy lynchi; C. guanacarum bacata sanchezi; Cochranella phryxa resplendens; Hyalinobatrachium ruedai munozorum. also diversification patterns are mostly congruent with allopatric speciation, facilitated by barriers gene flow (e.g., valleys, mountains, linearity Andes), niche conservatism is dominant feature Conservation threats diverse, but habitat destruction climate change particular concern. The most imperiled glassfrogs Ecuador buckleyi, charapita, geckoidea, medemi, pipilata, mache, Nymphargus balionotus, N. manduriacu, megacheirus, sucre, which considered Critically Endangered. Lastly, identify priority areas glassfrog conservation Ecuador.

Language: Английский

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The evolution of extended parental care in glassfrogs: Do egg‐clutch phenotypes mediate coevolution between the sexes?

Ecological Monographs, Journal Year: 2020, Volume and Issue: 90(3)

Published: April 3, 2020

Abstract Many animals improve offspring survival through parental care. Research on coevolution between parents has provided key insight into the genesis and maintenance of biparental However, understanding family dynamics more broadly requires assessing potential male–female coevolutionary processes in widespread common context uniparental Here, we explore how pre‐zygotic maternal contributions, jelly coats oviposition sites, influence dependency change with evolution male‐only care glassfrogs. Egg appears ubiquitous among glassfrogs, repeated evolutionary transitions from brief female‐only to extended Glassfrogs also exhibit a diversity sex‐specific traits involving egg‐jelly oviposition‐site choice, egg‐attendance behaviors. We hypothesize these form functionally interchangeable suites that mediate embryos' susceptibility environmental risk. First, using parent‐removal field experiments, egg‐hydration assays, comparative analyses, found no evidence caring sex or duration alter adaptive functions overall benefits (across eight species). Rather, contributions use associated embryo same risks are reduced by prolonged Next, examined history pre‐ post‐zygotic traits, applying phylogenetic methods literature records our observations 40 species (71 total, ~ 47 % family). Because determine requirements, male might enable and/or compensate for contributions. Supporting this hypothesis, complex is always reductions changes sites. This pattern suggests clutch phenotype provide general mechanism investment If different combinations egg phenotypes ecologically equivalent, their interchangeability could allow coevolve sexes without compromising survival. Male‐only oviparous metazoans, occurring annelids, molluscs, arthropods, fishes, amphibians. Investigations offer new prospects broadening research

Language: Английский

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Phylogeny-based species delimitation and integrative taxonomic revision of theHyalinobatrachium fleischmannispecies complex, with resurrection ofH. viridissimum(Taylor, 1942)

Systematics and Biodiversity, Journal Year: 2020, Volume and Issue: 18(5), P. 464 - 484

Published: July 3, 2020

Hyalinobatrachium fleischmanni is one of the widest ranging glassfrog species, occurring in lowlands from Mexico through Central America to Ecuador. Despite its conservative morphology, previous studies suggested that species comprised multiple lineages. Here we test hypothesis cryptic within H. by means morphometrics, bioacoustics, and molecular analysis. Molecular delimitation based on mitochondrial nuclear genes detected 17 candidate but combined with other sources evidence, support recognition at least three different name fleischmanni. The identity sensu stricto supported for populations Costa Rica eastern Honduras while tatayoi corresponds southern lineages South America. Those two differ note duration advertisement call absence nuptial pads hand webbing males. Populations Guatemala represent a third which assign available viridissimum comb. nov. differs DNA divergence, variation peak frequency, call. A divergent lineage western central tentatively assigned viridissimum. Based these results, provide updated information each species.http://www.zoobank.org/urn:lsid:zoobank.org:pub:96D65174-4F8B-4E4B-8C85-967767311255

Language: Английский

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Freshwater Fishes of Central America: Distribution, Assessment, and Major Threats

Diversity, Journal Year: 2022, Volume and Issue: 14(10), P. 793 - 793

Published: Sept. 24, 2022

Central America contains a rich diversity of freshwater habitats that support more than 600 species fishes. However, despite several perceived threats to the integrity throughout region, formal analysis extinction risk for region’s ichthyofauna is lacking. In this manuscript, we report an updated checklist and novel comprehensive assessment conservation status American fishes by applying IUCN Red List Categories Criteria at global level. We also analyze distribution across generate baseline geospatial data can be used in multi-species planning processes, which available through Website. Our results indicate between 15 28% region are threatened with extinction, considerable uncertainty resulting from elevated deficiency. identify major widespread including pollution, agriculture, aquaculture, biological resource use, natural system modifications, invasive species, land development. This represents important first step formulating effective action initiatives taxonomic group historically has received few protections inform priorities ecosystems both national regional scales.

Language: Английский

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Environment rather than character displacement explains call evolution in glassfrogs

Evolution, Journal Year: 2022, Volume and Issue: 77(2), P. 355 - 369

Published: Dec. 8, 2022

Abstract The acoustic adaptation hypothesis (AAH) and ecological character displacement (ECD) are two potential mechanisms shaping call evolution that can predict opposite trends for the differentiation of signals. Under AAH, signals evolve to minimize environmental degradation maximize detection against background noise, predicting homogenization in similar habitats due constraints on In contrast, ECD predicts greater differences traits closely related taxa sympatry because selection interference. We used comparative phylogenetic analyses test strength these selective advertisement calls glassfrogs, a highly diverse family neotropical anurans. found that, overall, environment may outweigh effects species interactions. As expected under temporal parameters correlated with vegetation density, but spectral had an unexpected inverse correlation as well temperature. detected convergence among co-occurring also across multiple populations from same different glassfrogs communities. Our results indicate is common likely habitat filtering, while relatively rare, suggesting costs signal similarity not drive divergent all systems.

Language: Английский

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Phylogeography of Habia fuscicauda (Cardinalidae) indicates population isolation, genetic divergence and demographic changes during the Quaternary climate shifts in the Mesoamerican rainforest

Journal of Ornithology, Journal Year: 2021, Volume and Issue: 162(4), P. 961 - 976

Published: June 5, 2021

Language: Английский

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Late Pleistocene Altitudinal Segregation and Demography Define Future Climate Change Distribution of the Peromyscus mexicanus Species Group: Conservation Implications

Animals, Journal Year: 2023, Volume and Issue: 13(11), P. 1753 - 1753

Published: May 25, 2023

Mountains harbor a significant number of the World’s biodiversity, both on tropical and temperate regions. Notably, one crucial gap in conservation is consideration historical contemporary patterns influencing differential distribution small mammal mountain species how climate change will affect their survival. The mice Peromyscus mexicanus group distributed across mountains Guatemala-Chiapas Central America, which experienced effects glacial interglacial cycles. We determined phylogeographic demographic lowlands highlands lineages, revealing that radiation modern P. lineages occurred during Pleistocene (ca. 2.6 mya) along Nuclear America. In concert with climatic cycles habitats, lowland highland showed recent population size increase decrease, respectively. also estimated current future ranges for six finding marked area two vegetation type would facilitate migrating towards higher elevations. Contrastingly, three range decrease; ecological requirements make them highly susceptible to habitat loss. Our findings are clear evidence negative impacts change, while our ability manage conserve these vulnerable ecosystems contingent understanding implications distribution, ecology, genetics wildlife populations.

Language: Английский

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Genomic differentiation and niche divergence in the Hetaerina americana (Odonata) cryptic species complex

Molecular Ecology, Journal Year: 2023, Volume and Issue: 33(2)

Published: Nov. 17, 2023

Abstract The evolution of reproductive barriers, that is, the speciation process, implies limitation gene flow between populations. Different patterns genomic differentiation throughout continuum may provide insights into causal evolutionary forces species divergence. In this study, we analysed a cryptic complex genus Hetaerina (Odonata). This includes H. americana and calverti ; however, in two highly differentiated genetic groups have been previously detected, which, hypothesize, correspond to different with low morphological variation. We obtained single nucleotide polymorphism (SNP) data for 90 individuals belonging taxa carried out tests identify isolation. results from STRUCTURE discriminant analysis principal components (DAPC), based on almost 5000 SNPs, confirmed presence three taxa. Also, found F ST values above 0.5 pairwise comparisons, which indicates considerable degree isolation among suggested species. also climatic niche overlap all taxa, suggesting each group occurs at specific conditions temperature, precipitation elevation. propose comprises species, be reproductively isolated by ecological barriers related divergence, since variation is minimal and, therefore, mechanical are probably less effective compared other such as .

Language: Английский

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Historical biogeography of the genusRhadinaea(Squamata: Dipsadinae)

Ecology and Evolution, Journal Year: 2021, Volume and Issue: 11(18), P. 12413 - 12428

Published: Aug. 5, 2021

Abstract Multiple geological and climatic events have created geographical or ecological barriers associated with speciation events, playing a role in biological diversification North Central America. Here, we evaluate the influence of Neogene Quaternary as well changes colubrid snake genus Rhadinaea using molecular dating ancestral area reconstruction. A multilocus sequence dataset was generated for 37 individuals from most biogeographical provinces where is distributed, representing 19 21 currently recognized species, two undescribed species. Our analyses show that majority species nest main clades, herein identified “Eastern” “Southern”. These clades probably diverged each other early Miocene, their divergence followed by 11 divergences during middle to late three Pliocene, six Pleistocene. The distribution reconstructed across Sierra Madre del Sur. phylogenetic do not support monophyly . Miocene Pliocene geomorphology, perhaps conjunction climate change, appears triggered genus, while induced analysis suggests uplifting Trans‐Mexican Volcanic Belt Chiapan–Guatemalan highlands this same period resulted northward southward colonization events. This more recent, independent Pleistocene involving Balsas Basin, Chihuahuan Desert, Pacific Coast, Occidental, Oriental, Sur, Belt, Veracruz provinces, driven fluctuations time.

Language: Английский

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Phylogeography of the white-crowned parrot (Pionus senilis)

Biota Neotropica, Journal Year: 2022, Volume and Issue: 22(4)

Published: Jan. 1, 2022

Abstract The white-crowned parrot Pionus senilis (von Spix, 1824) is distributed throughout Middle America, inhabiting the Gulf of Mexico coastal area from Tamaulipas (Mexico) to northern Panama. We used mitochondrial data (COI, ND2 and ND4) 55 specimens infer phylogenetic relationships, analyzed phylogeographic structure, genetic diversity, divergence periods, historical demography explore patterns. found three divergent lineages: two geographically separated by Isthmus Tehuantepec, third, in Costa Rica Nicaragua Depression. analysis molecular variance statistical analyses were consistent with genetically distinct populations. Central American lineage diverged 1.33 million years ago, whereas other lines branched off 1.19 ago. This pattern has been reported species birds.

Language: Английский

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