12 Works

Seascape genetics of the Atlantic spotted dolphin (Stenella frontalis) based on mitochondrial DNA

Karina Bohrer Do Amaral, Dalia C. Barragán-Barrera, Roosevelt A. Mesa-Gutiérrez, Nohelia Farias-Curtidor, Susana J. Caballero Gaitán, Paula Méndez-Fernandez, Marcos C. Oliveira Santos, Caroline Rinaldi, Renato Rinaldi, Salvatore Siciliano, Vidal Martín, Manuel Carillo, Ana Carolina O. De Meirelles, Valentina Franco-Trecu, Nelson J. R. Fagundes, Ignacio Benites Moreno, L. Lacey Knowles & Ana Rita Amaral
The Atlantic spotted dolphin (Stenella frontalis) is endemic to tropical, subtropical, and warm temperate waters of the Atlantic Ocean. Throughout its distribution, both geographic distance and environmental variation may contribute to population structure of the species. In this study we follow a seascape genetics approach to investigate population differentiation of Atlantic spotted dolphins based on a large worldwide dataset and the relationship with marine environmental variables. The results revealed that the Atlantic spotted dolphin exhibits...

Data from: The evolution of polymorphism in the warning coloration of the Amazonian poison frog Adelphobates galactonotus

Diana Rojas, Paolo Momigliano, Albertina Pimentel Lima, Pedro Ivo Simões, Rachel Y. Dudaniec, Teresa C. S. Avila-Pires, Marinus S. Hoogmoed, Youszef O. C. Bitar, Igor Luis Kaefer, Adolfo Amézquita & Adam Stow
While intraspecific variation in aposematic signals can be selected for by different predatory responses, their evolution is also contingent on other processes shaping genetic variation. We evaluate the relative contributions of selection, geographic isolation and random genetic drift to the evolution of aposematic color polymorphism in the poison frog Adelphobates galactonotus, distributed throughout eastern Brazilian Amazonia. Dorsal coloration was measured for 111 individuals and genetic data were obtained from 220 individuals at two mitochondrial genes...

Queen-worker conflict can drive the evolution of social polymorphism and split sex ratios in facultatively eusocial life-cycles

Andres Quiñones, Gil Henriques & Ido Pen
Hamilton’s idea that haplodiploidy favors the evolution of altruism – the haplodiploidy hypothesis -- relies on the relatedness asymmetry between the sexes, caused by the sex-specific ploidies. Theoretical work on the consequences of relatedness asymmetries has significantly improved our understanding of sex-allocation and intra-colony conflicts, but the importance of haplodiploidy for the evolution of altruism came to be seen as minor. However, recently it was shown that haplodiploidy can strongly favor the evolution of eusociality,...

Dietary and body mass reconstruction of the Miocene neotropical bat Notonycteris magdalenensis (Phyllostomidae) from La Venta, Colombia

Camilo López-Aguirre, Nicholas Czaplewski, Andrés Link, Masanaru Takai & Suzanne Hand
With 14 species recorded, the Miocene La Venta bat fauna is the most diverse bat palaeocommunity in South America. They include the oldest plant-visiting bat in the New World, and some of the earliest representatives of the extant families Phyllostomidae, Thyropteridae and Noctilionidae. La Venta’s Notonycteris magdalenensis is an extinct member of the subfamily Phyllostominae, a group of modern Neotropical animalivorous bats, and is commonly included in studies of the evolution of Neotropical bats, but...

Predators override rainfall effects on tropical food webs

Fabiola Ospina, Diane Srivastava, Angélica González, Jed Sparks & Emilio Realpe
Predators alter ecological communities by inducing changes in prey abundance and phenotypes, including elemental and isotopic composition. Climatic factors are known to often moderate predator effects on prey abundance, but few studies consider the combined effects of climate and predators on prey phenotype. We examined how altered precipitation moderates the effects of predators on the abundance and the chemical composition of prey, as well as the indirect effects on the basal resource: leaf litter coated...

De novo genome assembly of Leptodactylus fuscus

Lu Yang, Peter Andolfatto, Andrew Crawford, Santiago Herrera-Álvarez, Maríadel Pilar Rodríguez-Ordoñez, Julie Peng, Shabnam Mohammadi, Jay Storz, Arbel Harpak & Susanne Dobler
This presents a de novo genome assembly of Leptodactylus fuscus. High molecular weight DNA was extracted from a L. fuscus embryo which had been preserved in ethanol upon collection in Garzón, Huila, Colombia. The library was prepared and sequenced with 10X Genomics Chromium. Linked reads were processed by Long Ranger basic v2.2.2 and assembled with Supernova v2.1.1. The assembled genome is 2.42 Gb with 16,530 scaffolds >=10 kb, and scaffold N50 = 363 kb. The...

Data from: Rapid evolution of a floral trait following acquisition of novel pollinators

Christopher R. Mackin, Julián F. Peña, Mario A. Blanco, Nicholas J. Balfour & Maria Clara Castellanos
1. Changes in the pollinator assemblage visiting a plant can have consequences for reproductive success and floral evolution. We studied a recent plant trans-continental range expansion to test whether the acquisition of new pollinator functional groups can lead to rapid adaptive evolution of flowers. 2. In Digitalis purpurea, we compared flower visitors, floral traits and natural selection between native European populations and those in two Neotropical regions, naturalised after independent introductions. Bumblebees are the main...

Data from: Concerted evolution reveals co-adapted amino acid substitutions in Na+K+ ATPase of frogs that prey on toxic toads

Shabnam Mohammadi, Lu Yang, Arbel Harpak, Santiago Herrera-Álvarez, María Del Pilar Rodríguez-Ordoñez, Julie Peng, Karen Zhang, Jay Storz, Susanne Dobler, Andrew Crawford & Peter Andolfatto
Gene duplication is an important source of evolutionary innovation, but the functional distinction between duplicates can be opposed by ongoing gene conversion between them. Here we document a tandem duplication of Na+,K+-ATPase subunit α1 (ATP1A1) sharedby frogs in the genus Leptodactylus,a group of species that feeds on toxic toads. One ATP1A1 paralog evolved resistance to toad toxins while the other paralog retained ancestral susceptibility. Frequent non-allelic gene conversion homogenized most of the paralog sequences,yet the...

Limits and Possibilities of Mixing Policies: Lessons from and for Latin American cities (Policy Brief, n°25)

Maria Jose Alvarez Rivadulla
Plusieurs villes d’Amérique latine essayent de surmonter des décennies de ségrégation (d'état et de marché), en mettant en place des politiques urbaines de mixité qui consistent à localiser des logements sociaux dans des quartiers aisés plutôt que dans les périphéries pauvres où ils étaient traditionnellement construits. Ce changement découle de la prise de conscience des effets négatifs que peut entrainer la vie dans des quartiers défavorisés, en général, sans aucune mixité sociale, qui ont été...

Cephalic biomechanics underpins the evolutionary success of trilobites

Jorge Esteve, Jordi Marcé-Nogué, Francesc Pérez-Peris & Emily Rayfield
Arthropods (i.e. insects, spiders, crustaceans, myriapods and others), are the most successful Phanerozoic animals. The group are characterised by the possession of a segmented body, jointed limbs and a hard cuticle that is episodically moulted. One highly successful, but now extinct, group of arthropods are the trilobites. Trilobites underwent episodic moulting (ecdysis), and most trilobites possess facial sutures, lines of weakness in the cephalon, via which the exuviae is shed and the animal emerges. However,...

Plant functional traits in 42 paramo species in Colombia

Marisol Cruz & Eloisa Lasso
Páramos are exceptionally species-rich tropical alpine ecosystems that provide several important ecosystem services, including carbon storage and water provision. The responses of páramo plant species to climatic change are largely unknown, but classifying species by functional type and ecological strategy can help reduce complexity for modeling and conservation efforts. We measured 22 traits in 42 plant species with various growth forms in the Colombian Andes. We classified plant ecological strategies using CSR (C: competitor, S:...

Mapping the páramo land cover in the Northern Andes: Figure S4 Expert land-cover classification of the Andean páramo and distribution according to three groups: natural vegetation, natural abiotic and anthropogenic, and 12 classes

Gwendolyn Peyre
The Andean páramo is a biodiverse and vulnerable tropical high-mountain region, whose spatio-ecological patterns remain understudied. The lack of general characterization of its overall extent, land-cover classes, and treeline spatial features hinders our capacity to understand its responses to human impacts and predict future land-system changes. To address this knowledge gap, we classified the land-cover of the páramo in the northern Andes. Moreover, we estimated 1) the páramo’s total extent and distribution among countries, 2)...

Registration Year

  • 2021
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Resource Types

  • Dataset
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Affiliations

  • Universidad de Los Andes
    12
  • Universität Hamburg
    2
  • The University of Texas at Austin
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  • Columbia University
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  • Princeton University
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  • University of Chicago
    2
  • University of British Columbia
    2
  • University of Paris-Saclay
    2
  • Wellcome Sanger Institute
    2
  • University of Sussex
    1