10 Works

Synthesis of batrachochytrium dendrobatidis infection in South America: amphibian species under risk and areas to focus research and disease mitigation

Claudio Azat, Mario Alvarado-Rybak, Jaiber Solano-Iguaran, Anibal Velasco, Andrés Valenzuela-Sánchez, Sandra Flechas, Alexandra Peñafiel-Ricaurte, Andrew Cunningham & Leonardo Bacigalupe
Amphibian chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd), has been recognized as the infectious disease causing the most catastrophic loss of biodiversity known to science, with South America being the most impacted region. We tested whether Bd prevalence is distributed among host taxonomy, ecoregion, conservation status and habitat preference in South America. Here we provide a synthesis on the extent of Bd infection across South America based on 21,648 molecular diagnostic assays, roles of certain species...

Stability of rocky intertidal communities in response to species removal varies across spatial scales

Nelson Valdivia, Daniela Lopez, Eliseo Fica, Alexis Catalán, Moisés Aguilera, Marjorie Araya, Claudia Betancourtt, Katherine Burgos-Andrade, Thais Carvajal-Baldeon, Valentina Escares, Simon Gartenstein, Mariana Grossmann, Bárbara Gutiérrez, Jonne Kotta, Diego Morales-Torres, Bárbara Riedemann-Saldivia, Sara Rodríguez, Catalina Velasco-Charpentier, Vicente Villalobos & Bernardo Broitman
Improving our understanding of stability across spatial scales is crucial in the current scenario of biodiversity loss. Still, most empirical studies of stability target small scales. Here we experimentally removed the local space-dominant species (macroalgae, barnacles, or mussels) at eight sites spanning more than 1000 km of coastline in north- and south-central Chile, and quantified the relationship between area (the number of aggregated sites) and stability in aggregate community variables (total cover) and taxonomic composition....

Pieces in a global puzzle: Population genetics at two whale shark aggregations in the western Indian Ocean

Royale Hardenstine, Song He, Jesse Cochran, Camrin Braun, E. Fernando Cagua, Simon Pierce, Clare Prebble, Christoph Rohner, Pablo Saenz-Agudelo, Tane Sinclair-Taylor, Gregory Skomal, Simon Thorrold, Alexandra Watts, Casey Zakroff & Michael Berumen
The whale shark Rhincodon typus is found throughout the world’s tropical and warm-temperate ocean basins. Despite their broad physical distribution, research on the species has been concentrated at a few aggregation sites. Comparing DNA sequences from sharks at different sites can provide a demographically neutral understanding of the whale shark’s global ecology. Here, we created genetic profiles for 84 whale sharks from the Saudi Arabian Red Sea and 72 individuals from the coast of Tanzania...

Why bears hibernate? Redefining the scaling energetics of hibernation

Roberto Nespolo
Hibernation is a natural state of suspended animation that many mammals experience and has been interpreted as an adaptive strategy for saving energy. However, the actual amount of savings that hibernation represents, and particularly its dependence on body mass (the “scaling”) has not been calculated properly. Here we estimated the scaling of daily energy expenditure of hibernation (DEEH), covering a range of five orders of magnitude in mass. We found that DEEH scales isometrically with...

Data from: Pre-domestication bottlenecks of the cultivated seaweed Gracilaria chilensis

Oscar R. Huanel, Suany Quesada-Calderón, Cristian Ríos, Saraí Morales-González, Pablo Saenz-Agudelo, Wendy A. Nelson, Natalia Arakaki, Stéphane Mauger, Sylvain Faugeron & Marie-Laure Guillemin
Gracilaria chilensis is the main cultivated seaweed in Chile. The low genetic diversity observed in the Chilean population has been associated with the over-exploitation of natural beds and/or the founder effect that occurred during the post-glacial colonization from New Zealand. How these processes have affected its evolutionary trajectory before farming and incipient domestication is poorly understood. In this study, we used 2,232 SNPs to assess how the species' evolutionary history in New Zealand (its region...

Humpback whale song comparison for the Atlantic sector of the Southern Ocean

Elena Schall, Divna Djokic, Erin Ross-Marsh, Javier Oña, Judith Denkinger, Julio Ernesto Baumgarten, Linilson Rodrigues Padovese, Marcos R. Rossi-Santos, Maria Isabel Carvalho Goncalves, Renata Santoro Sousa-Lima, Rodrigo Hucke-Gaete, Simon Elwen, Susannah Buchan, Tess Gridley & Ilse Van Opzeeland
The results of comparative song analyses between the ASSO and the Ecuadorian and Brazilian breeding populations and recordings from the Chilean, South African and Namibian migration routes revealed that individuals from at least three humpback whale breeding populations most likely migrate to shared feeding grounds in the ASSO. Humpback whales from different populations potentially mix at different times (i.e., years) at feeding hotspots of variable locations.

Climate change and lithium mining influence flamingo abundance in the Lithium Triangle

Jorge Gutiérrez, Johnnie Moore, Patrick Donnelli, Cristina Dorador, Juan Navedo & Nathan Senner
The development of technologies to slow climate change has been identified as a global imperative. Nonetheless, such ‘green’ technologies can potentially have negative impacts on biodiversity. We explored how climate change and the mining of lithium for green technologies influence surface water availability, primary productivity, and the abundance of three threatened and economically important flamingo species in the ‘Lithium Triangle’ of the Chilean Andes. We combined climate and primary productivity data with remotely sensed measures...

Andean non-volant small mammals: a dataset of community assemblages of non-volant small mammals from the high Andes

Edgardo M. Rengifo, Jorge Brito, Jorge Pablo Jayat, Raisa Cairampoma, Agustina Novillo, Natali Hurtado, Ignacio Ferro, Cesar E. Medina, Alonso Arguero, Sergio Solari, Jose Urquizo, Ariatna Villareal, Elena Vivar, Pablo Teta, Marcial Quiroga-Carmona, Guillermo D'Elía & Alexandre Reis Percequillo
Information from diversity inventories is used to study patterns of biodiversity and species distribution; likewise, it may be useful to identify priority areas for conservation, and to guide future sampling efforts. In this context, we compiled information on non-volant small mammal communities from the high Andes (> 2,000 m.). Here we present an open resource data set containing information diversity (species composition, number of individuals captured ), inventory design (type of traps, sampling efforts), and...

Morphometric, gametic and parasitological data of clam Ameghynomia antiqua and DNAmt sequences of parasite

Marcela Astorga
The clam Ameghynomia antiqua is a highly important resource for fisheries due to its high catches volume. It is the bivalve mollusk with the highest fisheries landings from natural beds on the Pacific coast of southern South America; however, studies of the reproductive conditions of this species are scarce and date back many years. The object of the present work was to evaluate the reproductive characteristics of the species, analysing its gametogenic and gonadal cycle,...

A song of wind and ice: increased frequency of marine cold-spells in southwestern Patagonia and their possible effects on giant kelp forests

Alejandra Mora-Soto, Catalina Aguirre, Jose Luis Iriarte, Mauricio Palacios, Erasmo C. Macaya & Marc Macias-Fauria
In contrast to other coastal regions of the world, the giant kelp (Macrocystis pyrifera) ecosystem in southwestern Patagonia has been persistent in area and associated biodiversity in the last decades. In this ecoregion, Sea Surface Temperature (SST) records have consistently remained below the upper thermal threshold for kelp survival, however no studies have analysed the spatiotemporal variability of SSTs and their anomalies across the geographical diversity of the southwestern Patagonian coastline. We explored the geographical...

Registration Year

  • 2022
    10

Resource Types

  • Dataset
    10

Affiliations

  • Austral University of Chile
    7
  • University Austral de Chile
    3
  • University of Concepción
    2
  • Instituto Geofísico de la Escuela Politécnica Nacional
    1
  • National University of San Marcos
    1
  • University of Montana
    1
  • Marine Megafauna Foundation
    1
  • University of Valparaíso
    1
  • University of Extremadura
    1
  • National University of Saint Augustine
    1