Results 51 to 60 of about 499 (155)

Gastric dilatation and volvulus in a capybara (Hydrochoerus hydrochaeris, Linnaeus, 1766)

Veterinary Record Case Reports, Volume 13, Issue 3, September 2025.
Abstract Gastric torsion has been described in several species, but this is the first documented case in a capybara. An entire, 6‐year‐old, female capybara was found dead in the indoor enclosure of the zoo in the morning. Pathological examinations revealed a large, bloated stomach upon opening the abdominal cavity.
Anna Linda Nógrádi, Péter Kertész, János Gál, Árisz Ziszisz   +3 more
wiley   +1 more source

Seasonality in Reproduction and Reproductive Physiology of Caviomorphs

Mammal Review, Volume 55, Issue 3, July 2025.
ABSTRACT Animals experience seasonal fluctuations of photoperiod, food availability, temperature and precipitation. This affects their energy budget, often leading to seasonal reproduction. We review available literature and (re)‐analyse existing datasets on seasonal reproduction of South American caviomorph rodents that are characterised by long ...
Anja Guenther, Patricia Tachinardi, Veronica Sandra Valentinuzzi, Raúl Sobrero, Ayelen T. Eberhardt, Fritz Trillmich   +5 more
wiley   +1 more source

Functional and morphological divergence in the forelimb musculoskeletal system of scratch‐digging subterranean mammals (Rodentia: Bathyergidae)

Journal of Anatomy, Volume 245, Issue 3, Page 420-450, September 2024.
The muscles of scratch‐diggers (Bathyergus spp.) show a higher mechanical advantage for forelimb flexion and shoulder stabilization than tooth‐diggers. The glenohumeral and olecranon joints play fundamental roles as robust pivots to resist the action of larger muscles. Tooth‐diggers lacked some muscles aiding with elbow extension and humeral retraction,
Germán Montoya‐Sanhueza, Nigel C. Bennett, Radim Šumbera   +2 more
wiley   +1 more source

Beyond CREA: Evolutionary patterns of non‐allometric shape variation and divergence in a highly allometric clade of murine rodents

Ecology and Evolution, Volume 14, Issue 7, July 2024.
Rodent skulls display a highly conserved, strongly size‐dependent (allometric) range of shapes that is commonly found across mammals. We here use geometric morphometric analysis of Australian rodent cranial shape to show that this scaling is likely an emergent property of the specialised feeding biomechanics of most rodents, with other non‐size‐related
Ariel E. Marcy, D. Rex Mitchell, Thomas Guillerme, Matthew J. Phillips, Vera Weisbecker   +4 more
wiley   +1 more source

Digestive physiology of the plains viscacha (Lagostomus maximus): a large herbivorous hystricomorph rodent

Zoo biology, 2015
Plains viscachas (Lagostomus maximus) are large South American, fossorial rodents susceptible to diabetic cataracts. Various aspects of their digestive physiology were studied in three different experiments with 9 male and 7 female adult animals and 6 different diets (total n of feeding trials = 35).
Hagen, Katharina B, Besselmann, Dorothea, Cyrus-Eulenberger, Ulrike, Vendl, Catharina, Ortmann, Sylvia, Zingg, Robert, Kienzle, Ellen, Kreuzer, Michael, Hatt, Jean-Michel, Clauss, Marcus   +9 more
openaire   +5 more sources

Springhares, flying and flightless scaly‐tailed squirrels (Anomaluromorpha, Rodentia) are the squirrely mouse: comparative anatomy of the masticatory musculature and its implications on the evolution of hystricomorphy in rodents

Journal of Anatomy, Volume 244, Issue 6, Page 900-928, June 2024.
The digital dissection of the masticatory musculature of (a) Anomalurus, (b) Idiurus, (c) Zenkerella, and (d) Pedetes reveals a great degree of diversity in morphology. These taxa present a hystricomorphous condition of the skull that largely differs from those of other rodents with an enlarged foramen and reaffirms the significance of the descriptive ...
Léa Da Cunha, Pierre‐Henri Fabre, Lionel Hautier   +2 more
wiley   +1 more source

Effect of different feeding regimes on cecotrophy behavior and retention of solute and particle markers in the digestive tract of paca (Cuniculus paca)

, 2018
Many small herbivores practice cecotrophy - the ingestion of special feces enriched in microbial protein by colonic separation mechanisms (CSM). In digesta passage experiments, secondary marker excretion peaks in feces are considered indicative of marker-
Alcester Mendes, Sérgio Luiz Gama Nogueira-Filho, Nogueira-Filho, Sérgio Luiz Gama, Mendes, Alcester, Clauss, Marcus; https://orcid.org/, Souza Altino, Vanessa, Ortmann, Sylvia, Letícia Guerra Aldrigui, Guerra Aldrigui, Letícia, Marcus Clauss, da Cunha Nogueira, Selene Siqueira, Vanessa Souza Altino, Selene Siqueira da Cunha Nogueira, Sylvia Ortmann, Nogueira-Filho SLG, Guerra Aldrigui L, Mendes A, Souza Altino V, Clauss M, Ortmann S, da Cunha Nogueira SS   +20 more
core   +1 more source

Resting postures in terrestrial mammalian herbivores

, 2019
For ruminants and arboreal herbivores (sloths and colobine monkeys), an influence of digestive physiology on resting postures has been postulated that is linked to the interplay of digestive anatomy and the gravity vector.
Schiffmann, Christian; https://orcid.org/, Clauss, Marcus; https://orcid.org/, Pucora, Endre, Clauss, Marcus, Schiffmann, Christian   +4 more
core   +1 more source

Age of the Earliest African Anthropoids [PDF]

, 1986
The earliest fossil record of African anthropoid prunates (monkeys and apes) comes from the Jebel Qatrani Formation in the Fayum depression of Egypt. Reevaluation of both geologic and faunal evidence indicates that this formation was deposited in the ...
Obradovich, John D, Simons, Elwyn L, Fleagle, John G, Bown, Thomas M   +3 more
core  

MOLECULAR EVOLUTION OF RODENT INSULINS

, 1987
Several trees of amino acid sequences of rodent insulins were derived with the maximum-parsimony procedure. Possible orthologous and paralogous relationships were investigated.
Campagne, R. N., Beintema, J. J., CAMPAGNE, RN, BEINTEMA, JJ   +3 more
core   +1 more source