Tinka Plese

• MSc in natural science
• Managing Director at Foundation AIUNAU

Hoffmann's Two-toed Sloth Choloepus hoffmanni has most recently been assessed for The IUCN Red List of Threatened Species in 2022. Choloepus hoffmanni is listed as Least Concern.

Los Xenartrhas son un grupo de mamíferos de gran importancia histórica y ecológica originados en sur América. La implementación de técnicas en genética molecular en estos animales está en aumento y para ello los métodos de muestreo mínimamente invasivos son una herramienta exitosa para el monitoreo genético. En esta investigación se comparó la cali...

Xenarthra (sloths, anteaters, and armadillos) are the quintessential South American mammals. Among the xenarthrans, sloths constitute the most diverse paleontologically with almost 100 fossil genera recorded. However, this abundant sloth fauna in the Americas became extinct around 10,000 years ago. Only six species belonging to two genera, Bradypus...

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The use of wild animals as photo props is prevalent across the globe and is widely recognised to represent a potential animal welfare concern. However, detailed information regarding the specific impacts of such activity on wild animal behaviour is currently lacking. Herein, we investigated how brown-throated three-toed sloths (Bradypus variegatus)...

We sequenced the complete mitogenome of 39 sloths (19 Bradypus variegatus, 4 B. tridactylus, 1 B. pygmaeus, 1 B. torquatus, 4 Choloepus didactylus, and 10 C. hoffmanni). A Bayesian tree (BI) indicated a temporal split between Bradypus and Choloepus around 31 million years ago (MYA, Oligocene) and the other major splits within each genera during the...

Hoffmann's two-toed sloth (Choloepus hoffmanni) has been extensively studied since the 1940s in some countries across its distribution range. However, several aspects of its biology remain unexplored or have been described superficially. This study updated the geographic distribution of this sloth species in Colombia, describing external traits of...

Objetivo: este estudio analizó la composición de la comunidad de fauna vertebrada en un espacio boscoso muy húmedo premontano en el centro de prácticas Santa Inés, ubicado en el municipio de Caldas (Antioquia, Colombia) con un área de 124.085 m2, de conformación limoarcillosa y limoarenosa, una altitud entre 1800-2000 m s. n. m., y con una precipit...

Por su amplia oferta de biodiversidad, Colombia se ha convertido en un centro importante del comercio ilegal de vida silvestre que a pesar de que ocurre en todo el país, no tiene suficiente información para comprender la dinámica de la actividad. Este documento proporciona información actualizada sobre las áreas de mayor extracción de xenartros en...

Durante cinco meses (febrero-junio 2014) se rescató y reubicó fauna como parte de las labores de adecuación del vaso del embalse del Proyecto Hidroeléctrico Sogamoso (Santander-Colombia). Se realizaron 71 capturas de especies del orden Pilosa, que correspondieron a densidades de 0.4, 0.35 y 0.06 (ind/ha) para Bradypus variegatus, Choloepus hofmanni...

During five months (February-June 2014), wild species were rescued and relocated in preparation for the flooding of the reservoir of the Sogamoso Hydroelectric Project (Santander-Colombia). Seventy one captures of species of the order Pilosa were obtained, corresponding to the densities 0.4, 0.35 and 0.06 (ind/ha) for Bradypus variegatus, Choloepus...

Los osos hormigueros (Pilosa: Vermilingua) son de los mamíferos más antiguos que habitan en Suramérica. En Colombia se encuentran presentes las cuatro especies descritas para este grupo: el oso palmero (Myrmecophaga tridactyla), la tamandúa del norte (Tamandua mexicana), la tamandúa del sur (Tamandua tetradactyla) y el hormiguero de seda (Cyclopes...

The exhuberant tropical rain forest present in the biogeographic area of Chocó is one of the main diversity hot spots in the planet. In this environment, the arboreal mammals suit an important role by connecting the different forest stratums. This research was carried out in Isla Palma (Bahía Malaga, Valle del Cauca) where the unique arboreal mamma...

To assess some of the habitat characteristics that are important for the survival of two- and three-toed sloths (Choloepus hoffmanni and Bradypus variegatus), a floristic characterization was done in two fragments of the tropical dry forest in Arboletes, Antioquia, Colombia. The study was performed during the dry season of February – March 2007 in...

The conservation status of all sloth species was reassessed in May and June 2010 by the IUCN/SSC Anteater, Sloth and Armadillo Specialist Group. Four out of six species were categorized as Least Concern. Two sloths were classified in a threatened category according to the IUCN Red List of Threatened Species; Bradypus torquatus was listed as Vulnera...

Monthly field surveys were carried out from February to September 2004 to study behavioral and ecological aspects of Bradypus variegatus in a tropical dry forest fragment on “El Ceibal”, Santa Catalina, Bolívar, Colombia. The study included samples collected during the dry and wet seasons. Scan sampling was used to record B. variegatus activities (...

The stoichiometric for the dissociation of H2S has been determined from emf measurements in NaCl from 0.1 m to saturation at 5, 25 and 45°C and in KCl solutions at 5 and 25°C. The values of were also measured in NaCl with small amounts of added MgCl2 and CaCl2 to I = 6.0 m at 25 °C. The results were used to determine Pitzer coefficients for the int...

The pK 1 * for the dissociation of H 2 S has been measured in artificial seawater as a function of salinity ( S = 5–40) and temperature (5°– 25°C). Results have been fitted to an equation of the form urn:x-wiley:00243590:media:lno19883320269:lno19883320269-math-0001 where pK 1 is the value at infinite dilution given by urn:x-wiley:00243590:media:ln...