Dna/Dna Hybridization Studies of Muroid Rodents: Symmetry and Rates of Molecular Evolution

Brownell, Elise

doi:10.1111/j.1558-5646.1983.tb05631.x

Cited by 77 publications

(21 citation statements)

References 75 publications

(92 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hence, comparative analysis by independent contrasts (CAIC; Purvis & Rambaut 1995) was used to partition the variance among species into phylogenetically independent linear contrasts, following Felsenstein (1985). Our estimate of phylogeny for the study species was derived from the literature (Patton, Sherwood & Yang 1981;Brownell 1983;Fuller, Lee & Maxson 1984;Sarich 1985;Chaline & Graf 1988;Apfelbaum & Reig 1989;She et al 1990;Catzeflis, Anguilar & Jaegar 1992;Catzeflis et al 1995;Nikoletopoulos, Chondropoulos & Fraguedakis-Tsolis 1992;Din et al 1993;Smith & Patton 1993;Riddle 1995;Sullivan, Holsinger & Simon 1995;Watts & Baverstock 1995), and is shown in Fig. 2.…”

Section: Comparative Methodologymentioning

confidence: 99%

Average daily metabolic rate of rodents: habitat and dietary comparisons

et al. 1998

View full text Add to dashboard Cite

Average daily metabolic rate (ADMR), the metabolizable energy intake required by a caged animal to maintain constant body energy content, includes the basal metabolic rate (BMR) and the heat increment of feeding for maintenance (HIF m ). Therefore, when an animal is in energy balance, ADMR can be expressed as:This is so since locomotory and thermoregulatory costs are negligible.In addition to evaluating the energy requirements of animals, ADMR measurements could also serve a useful purpose in determining the efficiency of utilization of energy. However, unlike BMR and, recently, field metabolic rate measurements, it has been largely ignored in studies of energy expenditure Average daily metabolic rate (ADMR) is the metabolizable energy intake required by a caged animal to maintain constant body energy content. Linear regression of standardized, phylogenetically independent contrasts was used to describe the allometric relationship between ADMR and body mass in rodents. It was predicted that desert species would have a lower ADMR than non-desert species and that granivores would have a lower ADMR than those of herbivores and omnivores. The efficiency of utilization of energy for maintenance was also determined in these species. Here, it was predicted that the efficiency in granivores would be higher than in both herbivores and omnivores and in desert species would be higher than in non-desert species.2. The regression of the phylogenetic contrasts of ADMR on body mass (m b ) for 53 independent data points based on 63 species of rodents was highly significant (P < 0·0001) with an allometric slope of 0·53. Independent comparisons of both basal metabolic rate (BMR) and ADMR showed significantly lower rates in desert than in non-desert species.There was a trend for granivores to have a lower ADMR per g 0.53 than either omnivores or herbivores, but this trend is not significant in independent comparisons between the categories. Thus, the predictions in regard to desert and non-desert habitats were confirmed, and there is a non-significant trend in the predicted direction with respect to diet. Herbivores and omnivores showed no significant difference in either BMR or ADMR. 3. In independent comparisons between categories, there was no evidence for trends in the efficiency of utilization of energy for maintenance (BMR:ADMR ratio or k m ) with either habitat or diet categories. Thus, these results are not in agreement with our predictions. Taking simple means, k m equals 0·47 ± 0·21, 0·37 ± 0·12 and 0·56 ± 0·11 for granivores, omnivores and herbivores, respectively, and 0·37 ± 0·12 and 0·55 ± 0·16 for desert and non-desert mammals, respectively. 4. It is recommended that conditions for ADMR measurements be standardized, as is common for basal metabolic rate measurements. This would allow more reliable comparisons among species measured in different laboratories and also provide more accurate estimates of efficiency of utilization of energy.Key-words: Average daily metabolic rate, dietary comparisons, efficiency of utiliz...

show abstract

Section: Comparative Methodologymentioning

confidence: 99%

Average daily metabolic rate of rodents: habitat and dietary comparisons

et al. 1998

View full text Add to dashboard Cite

show abstract

“…The discrimination of the phylogenetic relationships revealed within the rodent families Arvicolidae and Muridae have been based on morphological, karyological and biochemical data (Brownell, 1983;Sarich, 1985;Gill et al, 1987;Modi, 1987;Catzeflis et al, 1987Catzeflis et al, , 1989. Moreover, such studies concerning the classification and evolution within and between the families of Arvicolidae and Muridae in Greece are already known (Ondrias, 1966;Fraguedakis-Tsolis & Ondrias, 1977;Niethammer & Krapp, 1978, 1982 Fraguedakis-Tsolis et al, 445 0 1992 The Zoological Society of London 446 N .…”

Section: Introductionmentioning

confidence: 99%

Albumin evolution and phylogenetic relationships among Greek rodents of the families Arvicolidae and Muridae

1992

View full text Add to dashboard Cite

The phylogenetic relationships of seven rodent species Microtus atticus, M. thomasi, M. epiroticus (family Arvicolidae) and Mus domesticus, Rattus norvegicus, Apodemus flavicollis and A. mystacinus (family Muridae) have been studied. In order to define these relationships we study the albumin evolution using the micro‐complement fixation test (MC'F). No phylogenetic (immunological) distance between M. atticus and M. thomasi was found, a fact which confirms from the biochemical point of view the opinion that the former taxon is a synonym of the latter one. A molecular time scale relating MC'F immunological distances and geological time was established based on the assumption of a rate of 100 amino acid substitutions per–20 million years. The time of divergence between M. epiroticus and M. thomasi was estimated to be 0.5–0.6 million years ago (Pleistocene). Such a recent divergence corroborates the opinion based on morphological and protein electrophoretic criteria according to which Terricola (formerly Pitymys) must be considered as a subgenus of the genus Microtus and not as a distinct genus Pitymys, as previously had been accepted. Apodemus flavicollis and A. mystacinus were separated about 0.65–0.8 million years ago (Pleistocene). The Rattus norvegicus lineage was separated–12.5 million years ago (end of Miocene), shortly before the Mus and Apodemus divergence. Our data indicate that the common ancestor of Arvicolidae and Muridae lived–25 million years ago (early Miocene). All these results are in agreement with paleontological and some recent DNA‐DNA hybridization and electrophoretic data.

show abstract

“…When fast versus slowly-evolving loci are compared between rat, mouse and guinea-pig, there is no obvious bias which would indicate the preferential loss of phylogenetically labile epitopes in any one of these taxa. Brownell (1983) concluded that rodent single-copy DNA evolved at a higher rate than was found in primates, although her results point to a smaller difference than reported by, among others, Laird et al (1969) who reported that substitution rates in rodents may be up to ten times faster than in other mammals. In their review of nucleotide substitution in Rodentia, Li et al (1987) corroborated that rates of substitutions were distinctly higher when compared with primates and artiodactylans.…”

Section: Discussionmentioning

confidence: 67%

Eutherian phylogeny from a primate perspective

Schreiber¹,

Erker²,

Bauer³

1994

Biological Journal of the Linnean Society

View full text Add to dashboard Cite

Determinant formulas for up to 22 serum proteins from nineteen species in seven Eutherian orders (Chiroptera, Carnivora, Artiodactyla, Perrissodactyl, Rodentia, Proboscidea, Xenarthra) and Metatheria were derived by comparative determinant analysis from a primate (human) perspective. Plesiomorphic character states for taxon-pairs were inferred, including epitope patterns of the putative last common ancestor of Primates and non-primate Eutheria. Our approach, comparative determinant analysis, is exceptional among immunological methods in being able to define molecular character states for cladistic systematics. Average degrees of phylogenetic conservation of protein determinants varied between loci by 6.5-fold. Against the background of possible lineagespecific rates of molecular substitution, the clear immunological differentiation of the Asiatic elephant from (other) ungulates is discussed as to its phylogenetic relevance, as are the well-marked distances between guinea-pig and myomorph rodents, fissipeds and harbour seal, Mega-and Microchiroptera, or pig and ruminants. It is concluded that genetic drift influenced the rate of molecular evolution of mammalian orders to a different extent, e.g. more in the Proboscidean lineage than in the clade leading to the horse. It is concluded that the substitution rate of antigenic determinants of serum proteins correlates positively with speciation frequency in a phyletic lineage.

show abstract

Dna/Dna Hybridization Studies of Muroid Rodents: Symmetry and Rates of Molecular Evolution

Cited by 77 publications

References 75 publications

Average daily metabolic rate of rodents: habitat and dietary comparisons

Average daily metabolic rate of rodents: habitat and dietary comparisons

Albumin evolution and phylogenetic relationships among Greek rodents of the families Arvicolidae and Muridae

Eutherian phylogeny from a primate perspective

Contact Info

Product

Resources

About