Results 51 to 60 of about 21,264 (254)

Effects of orexins on 17β-estradiol synthesis and P450 aromatase modulation in the testis of alpaca (Vicugna pacos). [PDF]

, 2018
The steroidogenic enzyme P450 aromatase (ARO) has a key role in the conversion of testosterone (T) into estrogens (E), expressed as 17β-estradiol. The presence and localization of this key enzyme have not been described before in the South American ...
Assisi L, Costagliola A, Liguori G, Mirabella N., Pelagalli A, Squillacioti C   +5 more
core   +1 more source

Age-Related Differences in Testosterone Concentration and Its Relation to Testicular Biometrics, Hemodynamics, and Fertility in Alpacas (Vicugna pacos)

Veterinary Sciences, 2023
Simple Summary Studies related to alpaca (Vicugna pacos) reproduction are scarce in the Andean region. The potential age-related differences in serum testosterone profiles in alpaca males and its relation to testicular morphometric characteristics ...
M. G. Pérez-Durand, Angela Massa-Guzmán, N. Luque-Mamani, D. Ruelas-Calloapaza, J. M. Urviola-Sánchez, Eloy A. Condori-Chuchi, M. Gutierrez-Reinoso, Uri H Perez-Guerra, M. García-Herreros   +8 more
semanticscholar   +1 more source

Evolution of posture in amniotes–Diving into the trabecular architecture of the femoral head

Journal of Evolutionary Biology, Volume 36, Issue 8, Page 1150-1165, August 2023., 2023
We use 3D microanatomical parameters measured at the femoral head to study femoral posture in amniotes. We show that these parameters are not good indicators of femoral posture. Methods of ancestral state reconstruction hold great promise for improving our understanding of the evolution of posture in amniotes.
Jordan Gônet, Michel Laurin, John R. Hutchinson   +2 more
wiley   +1 more source

Actinobacillus vicugnae sp. nov., isolated from alpaca (Vicugna pacos)

International Journal of Systematic and Evolutionary Microbiology, 2019
Ten strains of an Actinobacillus-like organism were isolated from alpaca (Vicugna pacos) in the UK over a period of 5 years, with no known epidemiological linkages. The isolates are distinct, based on both phenotype and genotype, from any previously described Actinobacillus species.
Miranda, Kirchner, Brian, Hunt, Therese, Carson, Nicholas, Duggett, Jakub, Muchowski, Adrian M, Whatmore   +5 more
openaire   +2 more sources

مطالعه شباهت های ژنتیکی و تجزیه و تحلیل تبارشناختی شترهای تک کوهانه و دوکوهانه ایرانی با هفت گونه اصلی موجود در خانواده شترسانان بر اساس ژنوم میتوکندریایی [PDF]

تحقیقات تولیدات دامی
توالی­های ژنوم‌ کامل میتوکندریایی هفت گونه اصلی شترسانان شامل Vicugna vicugna، Lama guanicoe، Vicugna pacos، Lama glama، Camelus ferus، Camelus dromedarius، Camelus bactrianus، چهار شتر تک کوهانه و شش شتر دوکوهانه ایرانی همراه با توالی­های ۱۳ ژن رمزگر ...
مصطفی هاشمی, احمد احمدی, پویا زمانی, محمد حسین فردوسی, رامین عبدلی   +4 more
doaj   +1 more source

Dysuria due to discospondylitis and intervertebral disc herniation in a male alpaca (Vicugna pacos) [PDF]

, 2015
Background: Dysuria in camelids is usually associated with the presence of lower urinary tract disease such as urolithiasis. As another differential diagnosis, urine retention may be caused by neurological disturbances resulting from infections of the ...
Hirz, Manuela, Reinacher, Manfred, Schmidt, Martin J., Sickinger, Marlene   +3 more
core   +1 more source

Comparing the performance of demineralization agents (HCl and EDTA) for stable isotope analysis of bone collagen with implications for quality control criteria and collagen yield

International Journal of Osteoarchaeology, Volume 33, Issue 3, Page 506-516, May/June 2023., 2023
Abstract Stable isotope analysis of ancient bone collagen is a powerful technique for studying diet, migration, and ecology in archeological contexts. These analyses are, however, limited by collagen preservation and prohibitively low collagen yields. Harsh chemical demineralization is required to isolate the collagen from the mineral component of the ...
Tess Wilson, Paul Szpak
wiley   +1 more source

Presence and Distribution of Urocortin and its Receptors in the Epididymis of Alpaca (Vicugna pacos). [PDF]

, 2014
Urocortin 1 (UCN) is a 40-amino acid peptide belonging to the corticotrophin-releasing hormone (CRH) family. The biological effects of this peptide are modulated by binding two G-coupled receptors named CRH receptor 1 (CRHR1) and CRH receptor 2 (CRHR2 ...
CIARCIA, ROBERTO, DE LUCA, ADRIANA, LIGUORI, GIOVANNA, MIRABELLA, NICOLA, SQUILLACIOTI, CATERINA, VITTORIA, ALFREDO   +5 more
core   +1 more source

Biocultural Calendars Across Four Ethnolinguistic Communities in Southwestern South America

GeoHealth, Volume 7, Issue 4, April 2023., 2023
Abstract Since the mid‐20th century, the so‐called Great Acceleration (sensu Steffen et al., 2007, https://doi.org/10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2) has amplified processes of ecosystem degradation, extinction of biological species, displacement of local peoples, losses of languages, and cultural diversity.
Ricardo Rozzi, Ricardo Álvarez, Victoria Castro, David Núñez, Jaime Ojeda, Alejandra Tauro, Francisca Massardo   +6 more
wiley   +1 more source

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

Estudios 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, Ismael Concha   +1 more
doaj   +1 more source