Comparison of selected cardiopulmonary parameters between the pronghorn and the goat

Thermoregulation in pronghorn antelope (Antilocapra americanaOrd) in the summer

“…These results confirmed aspects of an earlier study by McKean and Walker (McKean and Walker, 1974) who, also comparing pronghorns to goats (Capra hircus), found that pronghorns have a greater heart weight:body weight ratio and a lower airway resistance. Dhindsa et al (Dhindsa et al, 1974) found that pronghorn blood was unremarkable compared to several species of deer, while McKean and Walker (McKean and Walker, 1974) found 50% more haemoglobin, a higher haematocrit, and larger blood volume compared to goats. From the data provided by Dhindsa et al (N=4) (Dhindsa et al, 1974) and from the eight individual…”

“…To support this oxygen consumption Lindstedt et al showed that, compared to goats, pronghorn have a greater capacity for oxygen diffusion across the lung, a greater capacity to deliver oxygen to muscles, and a greater total volume of mitochondria in skeletal muscle (Lindstedt et al, 1991). These results confirmed aspects of an earlier study by McKean and Walker (McKean and Walker, 1974) who, also comparing pronghorns to goats (Capra hircus), found that pronghorns have a greater heart weight:body weight ratio and a lower airway resistance. Dhindsa et al (Dhindsa et al, 1974) found that pronghorn blood was unremarkable compared to several species of deer, while McKean and Walker (McKean and Walker, 1974) found 50% more haemoglobin, a higher haematocrit, and larger blood volume compared to goats.…”

“…Subcutaneous temperature (38.3±0.6°C) varied, probably because of peripheral vasoactivity, but on average was similar to other temperatures. Carotid blood temperature had a circadian/nycthemeral rhythm weakly but significantly (r=0.634) linked to the time of sunrise, of amplitude Pronghorn thermoregulation animals on which McKean and Walker based their report (McKean and Walker, 1974), however, it is also clear that pronghorns have very different blood indices compared to those calculated from average data for nine different species of southern African antelope (Rhodes, 1975 for 10·min (McKean and Walker, 1974). The anatomy of their cranial vasculature has been described (Carlton and McKean, 1977) and it is similar to that in other artiodactyls, specifically in that it has a well developed carotid rete-cavernous sinus system, one of the functions of which is to cool arterial blood destined for the brain (Maloney and Mitchell, 1997 (Thorne, 1975).…”

Conflict, compensation, and plasticity: Sex‐specific, individual‐level trade‐offs in green anole (Anolis carolinensis) performance

“…Although the mechanical bases of these trade‐offs are well‐understood at lower levels of organization, evidence of trade‐offs at the organismal level is inconsistent (Wilson & James, ). For example, sprinting and endurance running have incompatible morphological and physiological requirements, namely the short‐term generation of anaerobic power (T. M. Williams et al, ; Williams, Wilson, Rhodes, Andrews, & Payne, ) versus long‐term, efficient oxygen delivery, respectively (Lindstedt et al, ; McKean & Walker, ; Myers & Steudel, ; Steudel, ). Despite this incompatibility, studies have variously found strong (Herrel & Bonneaud, ), mixed (Vanhooydonck et al, ), or no support (de Albuquerque, Bonine, & Garland, ; Huey, Dunham, Overall, & Newman, ; Sorci, Swallow, Garland, & Clobert, ; Wilson, James, & Van Damme, ) for such a trade‐off at both the intra‐ and interspecific levels, and sometimes conflicting results from the same taxa (e.g., lacertid lizards; Vanhooydonck et al, ; Vanhooydonck, Van Damme, & Aerts, ).…”

Left ventricular volumes and functioning of the reindeer heart

“…The warm-blooded horse has blood volume of about 110 ml/kg, the dog about 93 ml/kg (30), and female pronghorn antilope about 86 ml/kg (31). The warm-blooded horse has blood volume of about 110 ml/kg, the dog about 93 ml/kg (30), and female pronghorn antilope about 86 ml/kg (31).…”