..., cursorial eutherian species in which the limbs are held essentially upright. Recent in vivo strain data from the Virginia opossum ( Didelphis virginiana ), a marsupial that uses a crouched rather than an upright limb posture, have indicated that its femur experiences appreciable torsion during locomotion...

... of the Virginia opossum ( Didelphis virginiana ), a marsupial that uses more crouched limb posture than most mammals from which bone strains have been recorded, and which belongs to a clade phylogenetically between reptiles and the eutherian mammals studied previously. The presence of substantial torsion...

... with gaits? Monodelphis domestica utilizes only fast walking and running trot gaits over a fivefold increase in speed, over which we could illicit constant velocity steps, although running trots were their preferred gait. In sustained level locomotion the opossums did not use other walking gaits presumed...

...Dong-Jing Zou ABSTRACT Respiratory activity was recorded from spinal ventral roots in the isolated intact central nervous system (CNS) of newborn opossum, Monodelphis domestica . These signals occurred in synchrony with movements of the ribs and the electromyogram (EMG) recorded from...

... species, such as the Virginia opossum, appear to run very inefficiently. Steady-state rates of O 2 consumption and CO 2 production were measured at rest and during horizontal treadmill exercise in wild-caught, trained opossums. Average daily in undisturbed animals was 7.73±0.40 ml O 2 kg −1 min −1 (5.67...

... (CNS) of the newly born South American opossum ( Monodelphis domestica ) the spinal cord was crushed. Outgrowth through and beyond the lesion was observed in living preparations for 2–5 days by staining axons with carbocyanine dyes. The structure of the acute crush and the growing neurites was examined...

...R. R. Stewart; D.-J. Zou; J. M. Treherne; K. Møllgård; N. R. Saunders; J. G. Nicholls ABSTRACT The entire central nervous system (CNS) of the newly born, South American opossum (Monodelphis domestica) was isolated and maintained in basal medium, Eagle’s (BME) with 0.2% foetal calf serum...