Jo Fritz
Biographic Data
| ID | 5205946 |
|---|---|
| NAME | Jo Fritz |
| GIVEN NAMES | Jo |
| FAMILY NAME | Fritz |
| SIGNATURE | FRITZ J |
| AFFILIATIONS | Middle East Studies Association of North America |
| VERIFIED | No |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 1 |
| AUTHOR COUNT | 11 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1983 |
| LATEST PUBLICATION YEAR | 2008 |
| H-INDEX | 1 |
Effects of aging on hematology and serum clinical chemistry in chimpanzees ( Pan troglodytes )
A number of age‐related changes in physiological functions have been identified in macaques and humans. However, few studies have examined physiological aging in chimpanzees, despite the increasing age of the chimpanzee population. We documented age‐related changes in seven hematology and 17 clinical chemistry parameters in 49 adult chimpanzees (17 males, 32 females) as a comparative viewpoint with human and macaque aging. Longitudinal data were …
Hunting and Occasional Consumption of Prey Items by Chimpanzees at the Primate Foundation of Arizona
Functional evidence for differences in sperm competition in humans and chimpanzees
Sperm competition occurs when the gametes of or more males compete for opportunities to fertilize a given set of ova. Previous studies have demonstrated that certain morphological characteristics are affected by sperm competition intensity (e.g. relative testes size and sperm midpiece volume). This study examined whether aspects of sperm energetics may also be affected by sexual selection. We compared the membrane potential of mitochondria in liv…
Subspecies composition and founder contribution of the captive U.S. chimpanzee (Pan troglodytes) population
Chimpanzees are presently classified into three subspecies: Pan troglodytes verus from west Africa, P.t. troglodytes from central Africa, and P.t. schweinfurthii from east Africa. A fourth subspecies (P.t. vellerosus), from Cameroon and northern Nigeria, has been proposed. These taxonomic designations are based on geographical origins and are reflected in sequence variation in the first hypervariable region (HVR-I) of the mtDNA D-loop. Although a…
Neighbor effect
Previous studies of captive chimpanzees have demonstrated the “neighbor effect,” or social contagion, with respect to agonistic vocalizations and behaviors. The present study considers whether there is a relationship between behavior patterns in focal animals and the auditory signals of neighboring social groups. Using focal‐group sampling, we collected 172.5 hr of data on 51 subjects (25 females and 26 males) housed in 10 social groups. We perfo…
Variables influencing the origins of diverse abnormal behaviors in a large sample of captive chimpanzees (Pan troglodytes)
The developmental origin of abnormal behaviors is generally associated with early rearing environments that lack sufficient physical and sensory stimulation. However, other factors should also be considered. A large sample of captive chimpanzees (128 males and 140 females) was surveyed for the presence or absence of 18 abnormal behaviors. Origin variables included the subject's source (zoo, pet, performer, or laboratory), rearing (mother- or hand…
Weight gain in captive chimpanzee infants
Weight gain in captive chimpanzee infants
Comparative analysis of weight gain, hand/wrist maturation; and dental emergence rates in chimpanzees aged 0–24 months from varying captive environments
Variability during the first 2 years of growth and development is examined in captive chimpanzees. The mixed longitudinal study of 175 animals compares curves of weight, hand/wrist maturation, and dental emergence for groups within the sample which differ in sex, rearing circumstances (mother-reared versus hand-reared), and colony (Primate Foundation of Arizona, White Sands Research Center, and The University of Texas M.D. Anderson Cancer Center …
Abnormal behaviors, with a special focus on rocking, and reproductive competence in a large sample of captive chimpanzees ( Pan troglodytes )
Chimpanzees ( Pan troglodytes ) are endangered in the wild and may no longer be imported into the United States. Of those animals presently in captivity, candidates for breeding programs must be identified to insure a self‐sustaining captive population. Some have suggested that poor reproductive performance might be linked to the performance of abnormal behaviors. In Study 1, three institutions housing breeding colonies of chimpanzees (86 males, …
Membership analysis of the first six years of the American Society of Primatologists
American Journal of PrimatologyVolume 4, Issue 4 p. 319-322 Editorial NoteFree Access Membership analysis of the first six years of the American Society of Primatologists W. Richard Dukelow, W. Richard Dukelow ChairmanSearch for more papers by this authorJo Fritz, Jo FritzSearch for more papers by this authorE. A. Muchmore, E. A. MuchmoreSearch for more papers by this authorJ. A. Porter Jr., J. A. Porter Jr.Search for more papers by this authorG.…
Functional evidence for differences in sperm competition in humans and chimpanzees
Sperm competition occurs when the gametes of or more males compete for opportunities to fertilize a given set of ova. Previous studies have demonstrated that certain morphological characteristics are affected by sperm competition intensity (e.g. relative testes size and sperm midpiece volume). This study examined whether aspects of sperm energetics may also be affected by sexual selection. We compared the membrane potential of mitochondria in liv…
Membership analysis of the first six years of the American Society of Primatologists
American Journal of PrimatologyVolume 4, Issue 4 p. 319-322 Editorial NoteFree Access Membership analysis of the first six years of the American Society of Primatologists W. Richard Dukelow, W. Richard Dukelow ChairmanSearch for more papers by this authorJo Fritz, Jo FritzSearch for more papers by this authorE. A. Muchmore, E. A. MuchmoreSearch for more papers by this authorJ. A. Porter Jr., J. A. Porter Jr.Search for more papers by this authorG.…
Abnormal behaviors, with a special focus on rocking, and reproductive competence in a large sample of captive chimpanzees ( Pan troglodytes )
Chimpanzees ( Pan troglodytes ) are endangered in the wild and may no longer be imported into the United States. Of those animals presently in captivity, candidates for breeding programs must be identified to insure a self‐sustaining captive population. Some have suggested that poor reproductive performance might be linked to the performance of abnormal behaviors. In Study 1, three institutions housing breeding colonies of chimpanzees (86 males, …
Weight gain in captive chimpanzee infants
Weight gain in captive chimpanzee infants
Comparative analysis of weight gain, hand/wrist maturation; and dental emergence rates in chimpanzees aged 0–24 months from varying captive environments
Variability during the first 2 years of growth and development is examined in captive chimpanzees. The mixed longitudinal study of 175 animals compares curves of weight, hand/wrist maturation, and dental emergence for groups within the sample which differ in sex, rearing circumstances (mother-reared versus hand-reared), and colony (Primate Foundation of Arizona, White Sands Research Center, and The University of Texas M.D. Anderson Cancer Center …
Variables influencing the origins of diverse abnormal behaviors in a large sample of captive chimpanzees (Pan troglodytes)
The developmental origin of abnormal behaviors is generally associated with early rearing environments that lack sufficient physical and sensory stimulation. However, other factors should also be considered. A large sample of captive chimpanzees (128 males and 140 females) was surveyed for the presence or absence of 18 abnormal behaviors. Origin variables included the subject's source (zoo, pet, performer, or laboratory), rearing (mother- or hand…
Subspecies composition and founder contribution of the captive U.S. chimpanzee (Pan troglodytes) population
Chimpanzees are presently classified into three subspecies: Pan troglodytes verus from west Africa, P.t. troglodytes from central Africa, and P.t. schweinfurthii from east Africa. A fourth subspecies (P.t. vellerosus), from Cameroon and northern Nigeria, has been proposed. These taxonomic designations are based on geographical origins and are reflected in sequence variation in the first hypervariable region (HVR-I) of the mtDNA D-loop. Although a…
Neighbor effect
Previous studies of captive chimpanzees have demonstrated the “neighbor effect,” or social contagion, with respect to agonistic vocalizations and behaviors. The present study considers whether there is a relationship between behavior patterns in focal animals and the auditory signals of neighboring social groups. Using focal‐group sampling, we collected 172.5 hr of data on 51 subjects (25 females and 26 males) housed in 10 social groups. We perfo…
Hunting and Occasional Consumption of Prey Items by Chimpanzees at the Primate Foundation of Arizona
Functional evidence for differences in sperm competition in humans and chimpanzees
Sperm competition occurs when the gametes of or more males compete for opportunities to fertilize a given set of ova. Previous studies have demonstrated that certain morphological characteristics are affected by sperm competition intensity (e.g. relative testes size and sperm midpiece volume). This study examined whether aspects of sperm energetics may also be affected by sexual selection. We compared the membrane potential of mitochondria in liv…
Effects of aging on hematology and serum clinical chemistry in chimpanzees ( Pan troglodytes )
A number of age‐related changes in physiological functions have been identified in macaques and humans. However, few studies have examined physiological aging in chimpanzees, despite the increasing age of the chimpanzee population. We documented age‐related changes in seven hematology and 17 clinical chemistry parameters in 49 adult chimpanzees (17 males, 32 females) as a comparative viewpoint with human and macaque aging. Longitudinal data were …
Biology (9 works) · Primate Behavior and Ecology (9 works) · Zoology (7 works) · Captivity (5 works) · Demography (5 works) · Troglodytes (5 works) · Human-Animal Interaction Studies (4 works) · Population (4 works) · Primate (4 works) · Animal Behavior and Welfare Studies (3 works)