Results 31 to 40 of about 4,965 (192)

Una contribución a la determinación taxonómica de la familia Camelidae en sitios formativos del Loa Medio.

open access: yesEstudios Atacameños, 1997
El presente trabajo es una contribución a la discusión metodológica acerca de la determinación taxonómica de camélidos. En él se entregan los resultados obtenidos en recientes investigaciones en torno a la determinación de especies silvestres y ...
María Isabel Cartajena Fasting   +1 more
doaj   +1 more source

DOSSIER: Osteometría de camélidos sudamericanos

open access: yesRevista del Museo de Antropologia, 2009
La identificación de elementos óseos y su asignación a una especie animal concreta es un tema central para la zooarqueología. Por ello desde la década de 1970 se han estudiado las diferencias morfométricas que permiten la diferenciación de especies que ...
Andrés D. Izeta
doaj   +5 more sources

Evaluation of a non‐radioactive rapid test for determination of serum progesterone in South American camelids

open access: yesVeterinary Record, EarlyView.
Abstract Background Determination of the serum progesterone (P4) concentration is of high importance in reproductive medicine and may be applied for diagnosing pregnancy in South American camelids. P4 measurements in alpacas and llamas are usually performed using immunoassays, which are time consuming and require appropriate expertise of laboratory ...
Lina Längerer   +5 more
wiley   +1 more source

From foraging to decomposition: Large vertebrates as biotic drivers of trace element cycling across landscapes

open access: yesJournal of Animal Ecology, EarlyView.
We highlight an overlooked pathway in ecosystem functioning: the role of animal carcass decomposition in trace element cycling. By linking animal life cycles to landscape‐scale processes, we explain how large animals redistribute scarce elements and influence spatial heterogeneity, with implications for ecosystem functioning and restoration.
Elke Wenting   +6 more
wiley   +1 more source

Concentración sérica de gamma – glutamiltransferasa y bilirrubina total / directa en crías de vicuñas (Vicugna vicugna)

open access: yes, 2022
El objetivo que se propuso en este estudio fue determinar la concentración sérica de gamma – glutamiltransferasa y bilirrubina total / directa en crías de vicuñas (Vicugna vicugna).
Pacco Palomino, Marcelino
core  

Elements on the move: How ungulate migration expands Alpine biogeochemical footprints

open access: yesJournal of Animal Ecology, EarlyView.
Using a spatially explicit model parameterized with GPS telemetry, we show that migratory and resident red deer play distinct roles in nitrogen redistribution across alpine landscapes. Migrants uniquely transport nitrogen upslope and up elevation, linking ecosystem element pools and revealing how the loss of migration alters large‐scale ecosystem ...
Kristy M. Ferraro   +10 more
wiley   +1 more source

Coproparasitological evaluation of nematodes and coccidia in a wild vicuña (Vicugna vicugna) population in the Argentinean Andean Altiplano [PDF]

open access: yes, 2016
A parasite screening evaluation was conducted to determine the presence of gastrointestinal nematodes and coccidia in wild vicuñas (Vicugna vicugna vicugna) from Jujuy, in Argentina´s Andean Altiplano.
Morici, Gabriel   +4 more
core   +1 more source

Cardiovascular Plasticity and Adaptation of High‐Altitude Birds and Mammals

open access: yesIntegrative Zoology, EarlyView.
This schematic depicts the cardiovascular adaptations of mammals and birds to high‐altitude hypoxia. It highlights key phenotypic changes in oxygen transport and cardiac responses, driven by molecular mechanisms including transcriptional regulation and genetic modifications.
Huishang She, Yanhua Qu
wiley   +1 more source

Two centrifugal flotation techniques for counting gastrointestinal parasite eggs and oocysts in alpaca faeces

open access: yesJournal of Veterinary Research, 2022
The alpaca (Vicugna pacos) is a camelid native to South America, but the species has wide distribution outside its natural habitat and is found in various countries on other continents, Poland being one in Europe.
Maria Pyziel-Serafin Anna   +5 more
doaj   +1 more source

Layer‐by‐layer soft‐tissue effects on flexion–extension‐dominant passive ex vivo limb joint ROM in quadrupedal mammals: An anatomical contribution to a morphofunctional framework

open access: yesJournal of Anatomy, EarlyView.
Layer‐by‐layer passive ex vivo assessment of flexion–extension‐dominant limb joint ROM across rabbit, pudu deer, chilla fox and pig revealed joint‐, tissue‐ and taxon‐specific responses to progressive tissue removal. Proximal joints often showed increasing ROM, whereas distal joints often showed non‐monotonic responses.
Paul Medina‐González   +4 more
wiley   +1 more source

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