Results 171 to 180 of about 1,764 (194)

GENETIC EROSION ON CAMELIDAE

Animal Genetic Resources Information, 1994
RESUMENEl autor describe la situación actual de los camélidos en América del Sur, aportando información sobre la geografia, distribución y número de las tres especies existentes: llama, alpaca y vicuña. Vienen presentados igualmente datos estadísticos importantes sobre las razas y sus sistemas de producción. Algunas indicaciones también sobre la escasa,
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Family Camelidae

1990
Abstract Camels and llamas, which originated in the New World, form part of the artiodactyl suborder Tylopoda The composition of the Tylopoda has been debated (Romer 1966; Webb and Taylor 1980) but the family Camelidae is evidently most closely related to the Oromerycidae (Gentry and Hooker 1988).
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Studies of body temperature patterns in South American Camelidae

Comparative Biochemistry and Physiology Part A: Physiology, 1975
Abstract 1. 1. At sea level the core temperatures of the alpaca ( Lama pacos ) and llama ( Lama glama ), recorded continuously by radiotelemetry, were within the ranges of 37·9–38·3°C and 38·l–38·6°C respectively. These ranges were unaltered after 6 days of water deprivation. 2. 2.
J, Bligh, I, Baumann, J, Sumar, F, Pocco
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Heavy-chain antibodies in Camelidae ; a case of evolutionary innovation

Immunogenetics, 2002
The emergence in Camelidae species of functional antibodies devoid of light chains (referred to as heavy-chain antibodies or HCAbs) is an intriguing evolutionary event. Homodimeric HCAbs have also been documented in spotted ratfish ( Cos5-Abs) and nurse shark (NAR).
Nguyen, Viet Khong, Su, C., Muyldermans, Serge, Van Der Loo, Wessel   +3 more
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Cytogenetic characterization of alpaca (Lama pacos, fam. Camelidae) prometaphase chromosomes.

Cytogenetic and genome research, 2006
The present study provides specific cytogenetic information on prometaphase chromosomes of the alpaca (Lama pacos, fam. Camelidae, 2n = 74) that forms a basis for future work on karyotype standardization and gene mapping of the species, as well as for comparative studies and future genetic improvement programs within the family Camelidae.
Di Berardino D, Nicodemo D, Coppola G, King AW, Ramunno L, Cosenza GF, Iannuzzi L, Di Meo GP, Balmus G, Rubes J   +9 more
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Emergence and evolution of functional heavy-chain antibodies in Camelidae

Developmental & Comparative Immunology, 2003
Antibodies of jawed-vertebrates are composed of paired heavy (H) and light (L) polypeptide chains. Surprisingly, the sera of camelids, nurse shark and wobbegong shark, and possibly ratfish contain antibodies that lack L-chains. In camelids, these Heavy-chain antibodies (HCAbs) are gamma-isotypes, and are functional in antigen binding. In this review we
Conrath, Katja, Wernery, Ulrik, Muyldermans, Serge, Nguyen, Viet Khong   +3 more
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Molecular evolution of the family Camelidae: a mitochondrial DNA study

Proceedings of the Royal Society of London. Series B: Biological Sciences, 1994
We report the first molecular evolutionary analysis of the family Camelidae by analysing the full DNA sequence of the mitochondrial cytochrome b gene. Estimates for the time of divergence of the Old World (Camelini) and New World (Lamini) tribes obtained from sequence data are in agreement with those derived from the fossil record.
H F, Stanley, M, Kadwell, J C, Wheeler
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La milenaria familia camelidae y el Nevado Huaytapallana

Naturaleza y Sociedad, 2018
El Nevado Huaytapallana es la principal fuente de vida para innumerables seres vivos, asi como para la Milenaria Familia Camelidae; sus aguas son usadas para el consumo humano, actividades agricolas y para la industria. Los factores tecnicos, ecologico, social y economico, garantizan un mayor beneficio al poblador en la crianza de alpacas, llamas y ...
María Del Carmen Durand, Alejandro Paytán   +1 more
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Evolution and present situation of the South American camelidae

Biological Journal of the Linnean Society, 1995
This paper provides a review of South American camelid evolution, classification and present status. Particular attention is paid to the debate concerning origins of the domestic alpaca and llama and the contribution of research on faunal remains from Andean archaeological sites towards resolving this issue.
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Pliocene Camelidae of Rancho El Ocote, Central Mexico

Journal of Mammalogy, 1989
Five species of camels from the Hemphillian, Rancho El Ocote local fauna, Guanajuato, Mexico, include two forms of Hemiauchenia ( H. vera and a smaller, unnamed species), a large lamine camelid (cf. Hemiauchenia ), a short, stocky form (cf. Alforjas ), and a cameline ( Megatylopus cf. M. matthewi ). The geographic range of Alforjas is extended onto the
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