R G Tague
Biographic Data
| ID | 69290 |
|---|---|
| NAME | R G Tague |
| GIVEN NAMES | R G |
| FAMILY NAME | Tague |
| SIGNATURE | TAGUE R G |
| AFFILIATIONS | Louisiana State University |
| ORCID | 0000-0003-2453-9281 |
| VERIFIED | Yes |
| TOTAL WORKS | 24 |
| TOTAL CITATIONS | 310 |
| AUTHOR COUNT | 24 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1986 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 10 |
Obstetric adaptation of the human pelvic inlet based on a sample of females and males matched for body size, and comparison with three species of primates that are sexually monomorphic in body size
(103.3%). Humans have higher sexual size dimorphism of inlet circumference despite lower relative newborn body mass compared to the other species because human newborns are of larger body mass than predicted for an anthropoid with our adult female body mass. In humans, birthing of bigger babies than predicted for our body mass increases selection pressure on females for enlargement of the pelvic inlet.
Proximate cause, anatomical correlates, and obstetrical implication of a supernumerary lumbar vertebra in humans
OBJECTIVES: Three issues are considered on variation in number of presacral vertebrae (PSV) in humans: (1) sexual difference in number of PSV, (2) inactivation of Hoxd-11 gene as etiology for a supernumerary lumbar vertebra, and (3) anatomical correlates of a supernumerary lumbar vertebra, including lumbar-sacral nearthrosis, and pelvic size. MATERIALS AND METHODS: Sample was 407 skeletonized females and 1,318 males from United States; ages at de…
Fusion of coccyx to sacrum in humans
Humans do not have a tail, but we have four rudimentary coccygeal vertebrae. This study considers several issues pertaining to fusion of the coccyx to the sacrum, including prevalence, sexual differences, effect on pelvic size, and obstetrical and evolutionary implications. Previous research on sacral–coccygeal fusion has reported: (1) lower prevalence in females than males, (2) prevalence increases with age, (3) range in prevalence among 13 samp…
High assimilation of the sacrum in a sample of American skeletons
High assimilation sacrum is fusion of the caudal‐most lumbar vertebra to the first sacral vertebra. Previous studies have shown that high assimilation is associated with clinical problems, including obstetrical difficulty. This study used adult American males ( n = 1,048) and females ( n = 1,038) of the Hamann–Todd and Terry skeletal collections to determine the prevalence of high assimilation and its effect on pelvic size, and to consider the ob…
Costal process of the first sacral vertebra
The human sacrum is sexually dimorphic, with males being larger than females in most dimensions. Previous studies, though, suggest that females may have a longer costal process of the first sacral vertebra (S1) than males. However, these studies neither quantified nor tested statistically the costal process of S1. This study compares S1 with the five lumbar vertebrae (L1 to L5) for a number of metric dimensions, including costal process length. F…
Big-bodied males help us recognize that females have big pelves
Schultz ([1949] Am. J. Phys. Anthropol. 7:401-424) presented a conundrum: among primates, sexual dimorphism of the pelvis is a developmental adjunct to dimorphism in other aspects of the body, albeit in the converse direction. Among species in which males are larger than females in body size, females are larger than males in some pelvic dimensions; species with little sexual dimorphism in nonpelvic size show little pelvic dimorphism. Obstetrical …
Making babies
Variability of metapodials in primates with rudimentary digits
A tenet of evolutionary theory is that, within a species, phenotypic variability is inversely related to the intensity of stabilizing selection. A corollary is that a rudimentary or vestigial structure should be highly variable. This relationship between rudimentation and variability, however, may simply be part of a continuum, as several studies have shown that variability and size of a structure are inversely related. This study tests whether t…
Variability of metapodials in primates with rudimentary digits
A tenet of evolutionary theory is that, within a species, phenotypic variability is inversely related to the intensity of stabilizing selection. A corollary is that a rudimentary or vestigial structure should be highly variable. This relationship between rudimentation and variability, however, may simply be part of a continuum, as several studies have shown that variability and size of a structure are inversely related. This study tests whether t…
Do big females have big pelves
Previous studies have shown that maternal stature is a correlate of both pelvic size and reproductive efficiency. This study addresses the issue of body size and obstetric advantage. The relationship between pelvic size and three nonpelvic measures of body size is determined for females and males. The skeletal sample consists of blacks, whites, and Native Americans. The variables include 28 measures of the pelvis, length and head diameter of the …
Do big females have big pelves
Previous studies have shown that maternal stature is a correlate of both pelvic size and reproductive efficiency. This study addresses the issue of body size and obstetric advantage. The relationship between pelvic size and three nonpelvic measures of body size is determined for females and males. The skeletal sample consists of blacks, whites, and Native Americans. The variables include 28 measures of the pelvis, length and head diameter of the …
Children of Prometheus
Children of Prometheus: The Accelerating Pace of Human Evolution. Christopher Wills. Reading, MA: Perseus Books, 1998. 310 pp
AL 288-1-Lucy or Lucifer
Variation in pelvic size between males and females in nonhuman anthropoids
Whether there is a sexual difference in phenotypic variance has been the subject of theoretical and empirical studies. The presence of such a difference is integral to some models on the evolution of sexual dimorphism. Several studies report that males are more variable than females for nonpelvic measures. This study tests for a sexual difference in variability of the pelvis. Phenotypic variance is a correlate of both the intensity and mode of se…
Maternal mortality or prolonged growth
This study evaluates the relationship between age at death and pelvic size among adults in three prehistoric Amerindian populations. The issue is to identify if the pelvis continues to grow and remodel in adulthood, or if there is differential survivorship among adults, particularly among females, based on pelvic size. The samples used in this study are Indian Knoll, Pecos Pueblo, and Libben. Twenty‐one measures of the pelvis are analyzed. A corr…
Pubic symphyseal synostosis and sexual dimorphism of the pelvis inPresbytis cristata andPresbytis rubicunda
Sexual dimorphism in the human bony pelvis, with a consideration of the Neandertal pelvis from Kebara cave, Israel
Sexual dimorphism of the human pelvis is inferentially related to obstetrics. However, researchers disagree in the identification and obstetric significance of pelvic dimorphisms. This study addresses three issues. First, common patterns in dimorphism are identified by analysis of pelvimetrics from six independent samples (Whites and Blacks of known sex and four Amerindian samples of unknown sex). Second, an hypothesis is tested that the index of…
Commonalities in dimorphism and variability in the anthropoid pelvis, with implications for the fossil record
Morphology of the pubis and preauricular area in relation to parity and age at death in Macaca mulatta
Some adult human females show bone resorption (pitting) at the dorsal aspect of the pubis and preauricular area of the ilium. The etiology of pelvic bone resorption is attributed alternatively to reproduction and to pelvic anatomy. While most researchers infer that pelvic pitting is related to reproduction, only a few studies are based on women of known parity. Degree of pubic resorption is directly associated with both parity (Suchey et al.: Am.…
Anatomical and developmental bases for the ventral arc of the human pubis
The ventral arc of the pubis is frequently used for sexing adult human hip bones. This study addresses the issues of the anatomical and developmental bases for the ventral arc. Dissection of seven adult pelves (four females and three males) demonstrates that the sexes are identical in the muscular and ligamentous attachments to this ridge of bone. The tendons of gracilis and adductor brevis, which are fused for a variable extent, arise from the r…
Variation in pelvic size between males and females
Selection intensity and phenotypic variability are inversely related. It has been hypothesized that, owing to opposing selection pressures on pelvic morphology in females between efficiency in locomotion and obstetric adequacy, female pelvic morphology is less variable than that in males. The hypothesis was supported based on data derived from observational methods of sexing pelves (Meindl et al., 1985). The hypothesis was tested in the present s…
Bone resorption of the pubis and preauricular area in humans and nonhuman mammals
Some innominates of adult human females show areas of bone resorption on the dorsal aspect of the pubic corpus and preauricular area of the ilium. For both sites, many studies have shown a positive association between degree of resorption and parity. The present study tested hypotheses concerning resorption of the pubis and preauricular area. Samples of innominates from three prehistoric Amerindian populations were used. Within each population, o…
The Functional Significance of Neandertal Pubic Length [and Comments and Reply]
The obstetric pelvis of A.L. 288-1 (Lucy)
Variation in pelvic size between males and females
Selection intensity and phenotypic variability are inversely related. It has been hypothesized that, owing to opposing selection pressures on pelvic morphology in females between efficiency in locomotion and obstetric adequacy, female pelvic morphology is less variable than that in males. The hypothesis was supported based on data derived from observational methods of sexing pelves (Meindl et al., 1985). The hypothesis was tested in the present s…
Sexual dimorphism in the human bony pelvis, with a consideration of the Neandertal pelvis from Kebara cave, Israel
Sexual dimorphism of the human pelvis is inferentially related to obstetrics. However, researchers disagree in the identification and obstetric significance of pelvic dimorphisms. This study addresses three issues. First, common patterns in dimorphism are identified by analysis of pelvimetrics from six independent samples (Whites and Blacks of known sex and four Amerindian samples of unknown sex). Second, an hypothesis is tested that the index of…
The Functional Significance of Neandertal Pubic Length [and Comments and Reply]
Commonalities in dimorphism and variability in the anthropoid pelvis, with implications for the fossil record
Big-bodied males help us recognize that females have big pelves
Schultz ([1949] Am. J. Phys. Anthropol. 7:401-424) presented a conundrum: among primates, sexual dimorphism of the pelvis is a developmental adjunct to dimorphism in other aspects of the body, albeit in the converse direction. Among species in which males are larger than females in body size, females are larger than males in some pelvic dimensions; species with little sexual dimorphism in nonpelvic size show little pelvic dimorphism. Obstetrical …
AL 288-1-Lucy or Lucifer
Maternal mortality or prolonged growth
This study evaluates the relationship between age at death and pelvic size among adults in three prehistoric Amerindian populations. The issue is to identify if the pelvis continues to grow and remodel in adulthood, or if there is differential survivorship among adults, particularly among females, based on pelvic size. The samples used in this study are Indian Knoll, Pecos Pueblo, and Libben. Twenty‐one measures of the pelvis are analyzed. A corr…
Variation in pelvic size between males and females in nonhuman anthropoids
Whether there is a sexual difference in phenotypic variance has been the subject of theoretical and empirical studies. The presence of such a difference is integral to some models on the evolution of sexual dimorphism. Several studies report that males are more variable than females for nonpelvic measures. This study tests for a sexual difference in variability of the pelvis. Phenotypic variance is a correlate of both the intensity and mode of se…
Bone resorption of the pubis and preauricular area in humans and nonhuman mammals
Some innominates of adult human females show areas of bone resorption on the dorsal aspect of the pubic corpus and preauricular area of the ilium. For both sites, many studies have shown a positive association between degree of resorption and parity. The present study tested hypotheses concerning resorption of the pubis and preauricular area. Samples of innominates from three prehistoric Amerindian populations were used. Within each population, o…
Costal process of the first sacral vertebra
The human sacrum is sexually dimorphic, with males being larger than females in most dimensions. Previous studies, though, suggest that females may have a longer costal process of the first sacral vertebra (S1) than males. However, these studies neither quantified nor tested statistically the costal process of S1. This study compares S1 with the five lumbar vertebrae (L1 to L5) for a number of metric dimensions, including costal process length. F…
Anatomical and developmental bases for the ventral arc of the human pubis
The ventral arc of the pubis is frequently used for sexing adult human hip bones. This study addresses the issues of the anatomical and developmental bases for the ventral arc. Dissection of seven adult pelves (four females and three males) demonstrates that the sexes are identical in the muscular and ligamentous attachments to this ridge of bone. The tendons of gracilis and adductor brevis, which are fused for a variable extent, arise from the r…
High assimilation of the sacrum in a sample of American skeletons
High assimilation sacrum is fusion of the caudal‐most lumbar vertebra to the first sacral vertebra. Previous studies have shown that high assimilation is associated with clinical problems, including obstetrical difficulty. This study used adult American males ( n = 1,048) and females ( n = 1,038) of the Hamann–Todd and Terry skeletal collections to determine the prevalence of high assimilation and its effect on pelvic size, and to consider the ob…
Variability of metapodials in primates with rudimentary digits
A tenet of evolutionary theory is that, within a species, phenotypic variability is inversely related to the intensity of stabilizing selection. A corollary is that a rudimentary or vestigial structure should be highly variable. This relationship between rudimentation and variability, however, may simply be part of a continuum, as several studies have shown that variability and size of a structure are inversely related. This study tests whether t…
Pubic symphyseal synostosis and sexual dimorphism of the pelvis inPresbytis cristata andPresbytis rubicunda
Fusion of coccyx to sacrum in humans
Humans do not have a tail, but we have four rudimentary coccygeal vertebrae. This study considers several issues pertaining to fusion of the coccyx to the sacrum, including prevalence, sexual differences, effect on pelvic size, and obstetrical and evolutionary implications. Previous research on sacral–coccygeal fusion has reported: (1) lower prevalence in females than males, (2) prevalence increases with age, (3) range in prevalence among 13 samp…
Morphology of the pubis and preauricular area in relation to parity and age at death in Macaca mulatta
Some adult human females show bone resorption (pitting) at the dorsal aspect of the pubis and preauricular area of the ilium. The etiology of pelvic bone resorption is attributed alternatively to reproduction and to pelvic anatomy. While most researchers infer that pelvic pitting is related to reproduction, only a few studies are based on women of known parity. Degree of pubic resorption is directly associated with both parity (Suchey et al.: Am.…
Proximate cause, anatomical correlates, and obstetrical implication of a supernumerary lumbar vertebra in humans
OBJECTIVES: Three issues are considered on variation in number of presacral vertebrae (PSV) in humans: (1) sexual difference in number of PSV, (2) inactivation of Hoxd-11 gene as etiology for a supernumerary lumbar vertebra, and (3) anatomical correlates of a supernumerary lumbar vertebra, including lumbar-sacral nearthrosis, and pelvic size. MATERIALS AND METHODS: Sample was 407 skeletonized females and 1,318 males from United States; ages at de…
The obstetric pelvis of A.L. 288-1 (Lucy)
Bone resorption of the pubis and preauricular area in humans and nonhuman mammals
Some innominates of adult human females show areas of bone resorption on the dorsal aspect of the pubic corpus and preauricular area of the ilium. For both sites, many studies have shown a positive association between degree of resorption and parity. The present study tested hypotheses concerning resorption of the pubis and preauricular area. Samples of innominates from three prehistoric Amerindian populations were used. Within each population, o…
The Functional Significance of Neandertal Pubic Length [and Comments and Reply]
Variation in pelvic size between males and females
Selection intensity and phenotypic variability are inversely related. It has been hypothesized that, owing to opposing selection pressures on pelvic morphology in females between efficiency in locomotion and obstetric adequacy, female pelvic morphology is less variable than that in males. The hypothesis was supported based on data derived from observational methods of sexing pelves (Meindl et al., 1985). The hypothesis was tested in the present s…
Morphology of the pubis and preauricular area in relation to parity and age at death in Macaca mulatta
Some adult human females show bone resorption (pitting) at the dorsal aspect of the pubis and preauricular area of the ilium. The etiology of pelvic bone resorption is attributed alternatively to reproduction and to pelvic anatomy. While most researchers infer that pelvic pitting is related to reproduction, only a few studies are based on women of known parity. Degree of pubic resorption is directly associated with both parity (Suchey et al.: Am.…
Anatomical and developmental bases for the ventral arc of the human pubis
The ventral arc of the pubis is frequently used for sexing adult human hip bones. This study addresses the issues of the anatomical and developmental bases for the ventral arc. Dissection of seven adult pelves (four females and three males) demonstrates that the sexes are identical in the muscular and ligamentous attachments to this ridge of bone. The tendons of gracilis and adductor brevis, which are fused for a variable extent, arise from the r…
Commonalities in dimorphism and variability in the anthropoid pelvis, with implications for the fossil record
Sexual dimorphism in the human bony pelvis, with a consideration of the Neandertal pelvis from Kebara cave, Israel
Sexual dimorphism of the human pelvis is inferentially related to obstetrics. However, researchers disagree in the identification and obstetric significance of pelvic dimorphisms. This study addresses three issues. First, common patterns in dimorphism are identified by analysis of pelvimetrics from six independent samples (Whites and Blacks of known sex and four Amerindian samples of unknown sex). Second, an hypothesis is tested that the index of…
Pubic symphyseal synostosis and sexual dimorphism of the pelvis inPresbytis cristata andPresbytis rubicunda
Maternal mortality or prolonged growth
This study evaluates the relationship between age at death and pelvic size among adults in three prehistoric Amerindian populations. The issue is to identify if the pelvis continues to grow and remodel in adulthood, or if there is differential survivorship among adults, particularly among females, based on pelvic size. The samples used in this study are Indian Knoll, Pecos Pueblo, and Libben. Twenty‐one measures of the pelvis are analyzed. A corr…
Variation in pelvic size between males and females in nonhuman anthropoids
Whether there is a sexual difference in phenotypic variance has been the subject of theoretical and empirical studies. The presence of such a difference is integral to some models on the evolution of sexual dimorphism. Several studies report that males are more variable than females for nonpelvic measures. This study tests for a sexual difference in variability of the pelvis. Phenotypic variance is a correlate of both the intensity and mode of se…
AL 288-1-Lucy or Lucifer
Do big females have big pelves
Previous studies have shown that maternal stature is a correlate of both pelvic size and reproductive efficiency. This study addresses the issue of body size and obstetric advantage. The relationship between pelvic size and three nonpelvic measures of body size is determined for females and males. The skeletal sample consists of blacks, whites, and Native Americans. The variables include 28 measures of the pelvis, length and head diameter of the …
Do big females have big pelves
Previous studies have shown that maternal stature is a correlate of both pelvic size and reproductive efficiency. This study addresses the issue of body size and obstetric advantage. The relationship between pelvic size and three nonpelvic measures of body size is determined for females and males. The skeletal sample consists of blacks, whites, and Native Americans. The variables include 28 measures of the pelvis, length and head diameter of the …
Children of Prometheus
Children of Prometheus: The Accelerating Pace of Human Evolution. Christopher Wills. Reading, MA: Perseus Books, 1998. 310 pp
Making babies
Variability of metapodials in primates with rudimentary digits
A tenet of evolutionary theory is that, within a species, phenotypic variability is inversely related to the intensity of stabilizing selection. A corollary is that a rudimentary or vestigial structure should be highly variable. This relationship between rudimentation and variability, however, may simply be part of a continuum, as several studies have shown that variability and size of a structure are inversely related. This study tests whether t…
Variability of metapodials in primates with rudimentary digits
A tenet of evolutionary theory is that, within a species, phenotypic variability is inversely related to the intensity of stabilizing selection. A corollary is that a rudimentary or vestigial structure should be highly variable. This relationship between rudimentation and variability, however, may simply be part of a continuum, as several studies have shown that variability and size of a structure are inversely related. This study tests whether t…
Big-bodied males help us recognize that females have big pelves
Schultz ([1949] Am. J. Phys. Anthropol. 7:401-424) presented a conundrum: among primates, sexual dimorphism of the pelvis is a developmental adjunct to dimorphism in other aspects of the body, albeit in the converse direction. Among species in which males are larger than females in body size, females are larger than males in some pelvic dimensions; species with little sexual dimorphism in nonpelvic size show little pelvic dimorphism. Obstetrical …
Costal process of the first sacral vertebra
The human sacrum is sexually dimorphic, with males being larger than females in most dimensions. Previous studies, though, suggest that females may have a longer costal process of the first sacral vertebra (S1) than males. However, these studies neither quantified nor tested statistically the costal process of S1. This study compares S1 with the five lumbar vertebrae (L1 to L5) for a number of metric dimensions, including costal process length. F…
High assimilation of the sacrum in a sample of American skeletons
High assimilation sacrum is fusion of the caudal‐most lumbar vertebra to the first sacral vertebra. Previous studies have shown that high assimilation is associated with clinical problems, including obstetrical difficulty. This study used adult American males ( n = 1,048) and females ( n = 1,038) of the Hamann–Todd and Terry skeletal collections to determine the prevalence of high assimilation and its effect on pelvic size, and to consider the ob…
Fusion of coccyx to sacrum in humans
Humans do not have a tail, but we have four rudimentary coccygeal vertebrae. This study considers several issues pertaining to fusion of the coccyx to the sacrum, including prevalence, sexual differences, effect on pelvic size, and obstetrical and evolutionary implications. Previous research on sacral–coccygeal fusion has reported: (1) lower prevalence in females than males, (2) prevalence increases with age, (3) range in prevalence among 13 samp…
Proximate cause, anatomical correlates, and obstetrical implication of a supernumerary lumbar vertebra in humans
OBJECTIVES: Three issues are considered on variation in number of presacral vertebrae (PSV) in humans: (1) sexual difference in number of PSV, (2) inactivation of Hoxd-11 gene as etiology for a supernumerary lumbar vertebra, and (3) anatomical correlates of a supernumerary lumbar vertebra, including lumbar-sacral nearthrosis, and pelvic size. MATERIALS AND METHODS: Sample was 407 skeletonized females and 1,318 males from United States; ages at de…
Obstetric adaptation of the human pelvic inlet based on a sample of females and males matched for body size, and comparison with three species of primates that are sexually monomorphic in body size
(103.3%). Humans have higher sexual size dimorphism of inlet circumference despite lower relative newborn body mass compared to the other species because human newborns are of larger body mass than predicted for an anthropoid with our adult female body mass. In humans, birthing of bigger babies than predicted for our body mass increases selection pressure on females for enlargement of the pelvic inlet.
Anatomy (18 works) · Anatomy (18 works) · Biology (16 works) · Pelvis (14 works) · Zoology (12 works) · Forensic Anthropology and Bioarchaeology Studies (10 works) · Medicine (10 works) · Sexual dimorphism (8 works) · Wildlife Ecology and Conservation (8 works) · Pleistocene-Era Hominins and Archaeology (6 works)