Results 61 to 70 of about 2,667 (141)

Pastoralism in the high tropical Andes: A review of the effect of grazing intensity on plant diversity and ecosystem services

Applied Vegetation Science, Volume 27, Issue 3, July/September 2024.
The Andes is the most extensive and populated tropical mountain region in the world. Here, pastoralism is a main land use, where two main pastoral systems, camelids in puna and bovines in páramo, impact biodiversity and ecosystem services differently. This literature review analyzes the ecosystem consequences of pastoralism and provides recommendations
Sisimac Alli Duchicela, Luis Daniel Llambí, Vivien Bonnesoeur, Francisco Román‐Dañobeytia   +3 more
wiley   +1 more source

Characterization of paneth cells in alpacas (Vicugna pacos, Mammalia, Camelidae)

Tissue and Cell, 2016
Paneth cells are secretory epithelial cells of the innate immune system of the intestine of several mammals, including alpacas. Little is known about the latter; thus, in the present study we described the morphology and histochemical characteristics of Paneth cells in healthy fetuses, and young and adult alpacas. For this purpose, samples of duodenum,
Vasquez, María, Lira, Boris, Rodríguez, José, Falcón, Néstor, Ocampo, Jorge Dario, Nishida, Fabián, Barbeito, Claudio Gustavo, Zanuzzi, Carolina Natalia   +7 more
openaire   +4 more sources

Comparative finite element analysis of the first thoracic vertebra in artiodactyls

Journal of Morphology, Volume 285, Issue 5, May 2024.
Using finite element analysis, this study explores the morphology of the first thoracic vertebra (T1) and its performance under compressive and tensile loads in artiodactyls with different neck postures and body sizes. Species with an upright posture exhibited the lowest stress and therefore performed better than species with a suspensory posture under
Sandra Schüler, Alana C. Sharp, John A. Nyakatura   +2 more
wiley   +1 more source

Optimal sampling interval for characterisation of the circadian rhythm of body temperature in homeothermic animals using periodogram and cosinor analysis

Ecology and Evolution, Volume 14, Issue 4, April 2024.
The circadian rhythm of core body temperature is an indicator of the physiological state of a homeothermic animal and can be used as a biomarker of its fitness to its environment. In this study, we investigate the impact of sampling intervals used to collect body temperature data on cosinor estimates of the circadian rhythm, and discuss the optimal ...
Grace Goh, Kristine Vesterdorf, Andrea Fuller, Dominique Blache, Shane K. Maloney   +4 more
wiley   +1 more source

Rasplođivanja mužjaka alpaka (Vicugna pacos, L.)

Veterinarska stanica, 2018
Alpake su pripitomljene životinje iz porodice deva koje potječu s južnoameričkih Anda. Fiziologija rasplođivanja alpaka se znatno razlikuje od nama poznatih domaćih životinja. Rasplodna sezona u Južnoj Americi traje tijekom kišne sezone, od prosinca do ožujka, dok se u Sjevernoj Americi pare čitave godine. Spolno su zreli u dobi od 1 do 3 godine.
Samardžija, Marko, Đuričić, Dražen, Valpotić, Hrvoje   +2 more
openaire   +2 more sources

Identification of genomic regions associated with differences in fleece type in Huacaya and Suri alpacas (Vicugna pacos)

Animal Genetics, Volume 55, Issue 1, Page 163-167, February 2024.
Abstract The difference in fleece type is the distinguishing trait between the two types of alpacas (Vicugna pacos), Huacaya and Suri. The Suri fleece type has been found to be inherited dominantly over the Huacaya type, resulting in offspring with the Suri phenotype.
K. Tan, O. O. Adeniyi, A. Letko, G. RuddGarces, E. Manz, H. Wagner, P. Zanolari, C. Drögemüller, G. Lühken   +8 more
wiley   +1 more source

Anthelmintic resistance in gastrointestinal nematodes of alpacas (Vicugna pacos) in Australia

Parasites & Vectors, 2018
Background Gastrointestinal nematodes (GINs) can cause significant economic losses in alpacas due to lowered production of fibre and meat. Although no anthelmintics are registered for use in alpacas, various classes of anthelmintics are frequently used ...
Mohammed H. Rashid, Jane L. Vaughan, Mark A. Stevenson, Angus J. D. Campbell, Ian Beveridge, Abdul Jabbar   +5 more
doaj   +1 more source

Neuropathological findings suggestive for a stroke in an alpaca (Vicugna pacos)

Acta Veterinaria Scandinavica, 2019
Background This case report describes a focal brain lesion in an alpaca (Vicugna pacos). Although this is a restricted study based on a single animal, neuropathological features are reported that are most likely attributed to a vascular event with either
Sandra Schöniger, Enrika Schütze, Dominik Michalski, Joana Puchta, Matthias Kaiser, Wolfgang Härtig   +5 more
doaj   +1 more source

Innervation and immunohistochemical characteristics of epididymis in Alpaca camelid (Vicugna pacos)

Italian Journal of Animal Science, 2013
Alpacas (Vicugna pacos) are domesticated camelids indigenous to south America and recently also bred in Europe and Italy for their high quality wool. There is little data available regarding the innervation of the male reproductive tract of this species.
Giovanna Liguori, Salvatore Paino, Caterina Squillacioti, Adriana De Luca, Sabrina Alì, Emilia Langella, Nicola Mirabella   +6 more
doaj   +1 more source

No evidence for xylazine causing cerebral infarcts

Journal of the American College of Emergency Physicians Open, Volume 5, Issue 4, August 2024.
Kim‐Long R. Nguyen, Michael E. Mullins
wiley   +1 more source