Relationship between metabolic rate and energy expenditure for lactation in Peromyscus

Energy requirements during reproduction and reproductive effort in shrews (Soricidae)

“…Thus at a given body mass, members of the genus Sorex not only have higher basal rates of metabolism (Sparti & Genoud, 1989) and energy budgets (Genoud, 1985), but also invest more energy in each reproductive event, both when expressed in absolute terms and relative to their non-reproductive requirements. Similar results have been obtained by Glazier (1985) on five species of Peromyscus. This observation agrees with the hypothesis that increased reproductive output may be a major advantage derived from the high rate of metabolism in many Soricinae (Genoud, 1988), although the functional relationship between rate of metabolism and rate of biosynthesis (tissue and/or milk production) is still not demonstrated.…”

Energy requirements during reproduction and reproductive effort in shrews (Soricidae)

“…Thus at a given body mass, members of the genus Sorex not only have higher basal rates of metabolism (Sparti & Genoud, 1989) and energy budgets (Genoud, 1985), but also invest more energy in each reproductive event, both when expressed in absolute terms and relative to their non-reproductive requirements. Similar results have been obtained by Glazier (1985) on five species of Peromyscus. This observation agrees with the hypothesis that increased reproductive output may be a major advantage derived from the high rate of metabolism in many Soricinae (Genoud, 1988), although the functional relationship between rate of metabolism and rate of biosynthesis (tissue and/or milk production) is still not demonstrated.…”

Is metabolic rate a universal ‘pacemaker’ for biological processes?

“…As expected, positive genetic associations have been observed between BMR and level of exploratory activity in deer mice [Peromyscus maniculatus (Wagner)] (Careau et al, 2011), and between BMR and exercise-induced aerobic capacity in bank voles [Myodes glareolus (Schreber)] (Sadowska et al, 2005) and laboratory mice (Wone et al, 2009). Similar interspecific associations between BMR and behavioural activity have been found among Peromyscus (and other neotomine rodent) species (Glazier, 1985;Mueller & Diamond, 2001;Careau et al, 2011) and between Sorex and Crocidura shrews (von Merten & Siemers, 2012). Feng, Zhao & Lu (2014) also report that BMR and locomotor speed are positively correlated in mammals generally.…”

Rate of metabolism during lactation in small terrestrial mammals (Crocidura russula, Mus domesticus and Microtus arvalis)

“…McNab (1980) has proposed that part of the variation in BMR among mammals may be linked to variation in reproductive output and that one advantage of having a higher relative BMR may be the larger reproductive output that can be achieved. This proposal has been tested at the interspecific level by several authors, with contrasting results (Hennemann, 1983;Glazier, 1985;Harvey et al, 1991), whereas at the intraspecific level not much support has been found (Derting and McClure, 1989;Earle and Lavigne, 1990;Hayes et al, 1992;Johnson et al, 2001a;Krol et al, 2003; but see Derting, 1989). As already suggested by Speakman and McQueenie (1996), McLean and Speakman (2000) and Johnson et al (2001a) the fact that maternal rates of metabolism may be elevated above nonreproductive levels may explain why some studies have failed to obtain a correlation between BMR and reproductive output.…”

Energy requirements during reproduction and reproductive effort in shrews (Soricidae)

“…Thus at a given body mass, members of the genus Sorex not only have higher basal rates of metabolism (Sparti & Genoud, 1989) and energy budgets (Genoud, 1985), but also invest more energy in each reproductive event, both when expressed in absolute terms and relative to their non-reproductive requirements. Similar results have been obtained by Glazier (1985) on five species of Peromyscus. This observation agrees with the hypothesis that increased reproductive output may be a major advantage derived from the high rate of metabolism in many Soricinae (Genoud, 1988), although the functional relationship between rate of metabolism and rate of biosynthesis (tissue and/or milk production) is still not demonstrated.…”

Is metabolic rate a universal ‘pacemaker’ for biological processes?

“…As expected, positive genetic associations have been observed between BMR and level of exploratory activity in deer mice [Peromyscus maniculatus (Wagner)] (Careau et al, 2011), and between BMR and exercise-induced aerobic capacity in bank voles [Myodes glareolus (Schreber)] (Sadowska et al, 2005) and laboratory mice (Wone et al, 2009). Similar interspecific associations between BMR and behavioural activity have been found among Peromyscus (and other neotomine rodent) species (Glazier, 1985;Mueller & Diamond, 2001;Careau et al, 2011) and between Sorex and Crocidura shrews (von Merten & Siemers, 2012). Feng, Zhao & Lu (2014) also report that BMR and locomotor speed are positively correlated in mammals generally.…”

Rate of metabolism during lactation in small terrestrial mammals (Crocidura russula, Mus domesticus and Microtus arvalis)

“…McNab (1980) has proposed that part of the variation in BMR among mammals may be linked to variation in reproductive output and that one advantage of having a higher relative BMR may be the larger reproductive output that can be achieved. This proposal has been tested at the interspecific level by several authors, with contrasting results (Hennemann, 1983;Glazier, 1985;Harvey et al, 1991), whereas at the intraspecific level not much support has been found (Derting and McClure, 1989;Earle and Lavigne, 1990;Hayes et al, 1992;Johnson et al, 2001a;Krol et al, 2003; but see Derting, 1989). As already suggested by Speakman and McQueenie (1996), McLean and Speakman (2000) and Johnson et al (2001a) the fact that maternal rates of metabolism may be elevated above nonreproductive levels may explain why some studies have failed to obtain a correlation between BMR and reproductive output.…”

Energy requirements during reproduction and reproductive effort in shrews (Soricidae)

“…Thus at a given body mass, members of the genus Sorex not only have higher basal rates of metabolism (Sparti & Genoud, 1989) and energy budgets (Genoud, 1985), but also invest more energy in each reproductive event, both when expressed in absolute terms and relative to their non-reproductive requirements. Similar results have been obtained by Glazier (1985) on five species of Peromyscus. This observation agrees with the hypothesis that increased reproductive output may be a major advantage derived from the high rate of metabolism in many Soricinae (Genoud, 1988), although the functional relationship between rate of metabolism and rate of biosynthesis (tissue and/or milk production) is still not demonstrated.…”

Is metabolic rate a universal ‘pacemaker’ for biological processes?

“…As expected, positive genetic associations have been observed between BMR and level of exploratory activity in deer mice [Peromyscus maniculatus (Wagner)] (Careau et al, 2011), and between BMR and exercise-induced aerobic capacity in bank voles [Myodes glareolus (Schreber)] (Sadowska et al, 2005) and laboratory mice (Wone et al, 2009). Similar interspecific associations between BMR and behavioural activity have been found among Peromyscus (and other neotomine rodent) species (Glazier, 1985;Mueller & Diamond, 2001;Careau et al, 2011) and between Sorex and Crocidura shrews (von Merten & Siemers, 2012). Feng, Zhao & Lu (2014) also report that BMR and locomotor speed are positively correlated in mammals generally.…”

Rate of metabolism during lactation in small terrestrial mammals (Crocidura russula, Mus domesticus and Microtus arvalis)

“…McNab (1980) has proposed that part of the variation in BMR among mammals may be linked to variation in reproductive output and that one advantage of having a higher relative BMR may be the larger reproductive output that can be achieved. This proposal has been tested at the interspecific level by several authors, with contrasting results (Hennemann, 1983;Glazier, 1985;Harvey et al, 1991), whereas at the intraspecific level not much support has been found (Derting and McClure, 1989;Earle and Lavigne, 1990;Hayes et al, 1992;Johnson et al, 2001a;Krol et al, 2003; but see Derting, 1989). As already suggested by Speakman and McQueenie (1996), McLean and Speakman (2000) and Johnson et al (2001a) the fact that maternal rates of metabolism may be elevated above nonreproductive levels may explain why some studies have failed to obtain a correlation between BMR and reproductive output.…”