Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution.

Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution. Abstract Text:

Lingxia Zhao,Qingwu Lu,Wending Zhang,Lingxia Zhao,Qingwu Lu,Wending Zhang,

The late Miocene hominoid Lufengpithecus from Yunnan Province, China, is crucial for understanding hominoid evolution in Asia. Given that age at first permanent molar emergence is a key life-history trait in primates, the present study determined the age at death of the Lufengpithecus lufengensis juvenile PA868, which was in the process of erupting its first molar. Using a perikymata periodicity of 7-11 days, along with estimation of cusp formation time and the postnatal delay of crown mineralization, perikymata counts obtained from the permanent central incisor and canine germs indicate that the age at death of PA868 was 2.4-4.5 years based on the central incisor germ, and 2.5-4.7 years based on the canine germ. The age at the first molar emergence was actually slightly younger (by about 0.3 years), as demonstrated by tiny wear facets on this tooth, which indicate that gingival emergence had occurred sometime before death. The average age at first molar emergence of Lufengpithecus lufengensis PA868 is estimated to be 3.2-3.3 years, with a range of 2.1-4.4 years. In comparison to extant primates and other fossil hominoids, the life history of Lufengpithecus lufengensis is similar to that of extant great apes and the Miocene hominoids Afropithecus turkanensis and Sivapithecus parvada, as well as Plio-Pleistocene Australopithecus, and different from monkeys, gibbons, and modern humans.

Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution. Publishing Authors By Initials

L Zhao,Q Lu,W Zhang,L Zhao,Q Lu,W Zhang,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of human evolution

VOLUME: 54

Page Numbers: 251-7

Journal Abbreviation: J. Hum. Evol.

ISSN: 0047-2484

DAY: 26

MONTH: 11

YEAR: 2007

Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 337330

Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution.

AFFILIATION: Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China.

Country: England

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: J Hum Evol

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution Related Publications

• A comparative study on the intercuspal occlusion among TMD patients, malocclusion patients and university students.
• Effect of retinoblastoma gene on human osteosarcoma cell line OS732.
• Enhanced antioxidant and cytoprotective abilities of vitamin E succinate is associated with a rapid uptake advantage in rat hepatocytes and mitochondria.
• Intervention by azithromycin on bleomycin-induced lung injury in rats and its mechanisms.
• Method development of adsorbed stationary phase open tubular capillary electrochromatography.
• Supercritical fluid CO2 extraction of colchicine from colchicine Autumnele liliaceae.
• Vascular endothelial growth factor gene expression in patients' ischemic skeletal muscle with diabetic foot.
• [A case of hypodermiasis with empyema]
• [Analysis of hepatitis G virus genotypes in some areas of China]
• [Autologous dendritic cells eliciting cytotoxicity of bone marrow cells against chronic granulocytic leukemia]
• [Changes of human recombination bone morphogenetic protein-2 in bone and marrow in tail suspended rats]
• [Cloning of the mouse Doc-1R gene by genomic walking]
• [Construction of recombinant adenoviruses carrying human urokinase-type plasminogen activator and its expression in hepatic stellate cells in vitro]
• [Effect of inhibition of telomerase activity on cisplatin-induced apoptosis in K562 cells]
• [Effects of electrical stimulation of lateral hypothalamic area on gastric ischemia-reperfusion injury in rats]
• [Fatal complications in traffic accident injury]
• [Indomethacin induces apoptosis of K562 cells through activation of caspases and elevation of intracellular free calcium]
• [Infection and replication of hepatitis B virus and its clearance mechanism: an overview]
• [Mechanisms underlying dopaminergic neurotoxicity in ischemic cerebral damage]
• [Physiological and pathologic implications for zero-stress state of the esophagus]
• [Protein kinases and Alzheimer's disease]
• [Retroperitoneal laparoscopic unroofing of renal cyst: use of close method]
• [Risk of leukemia among medical X-ray workers in China between 1950 and 1995]
• [Studies on association between lipoprotein lipase gene polymorphisms of Pvu II site and hypertriglyceridemics in Chinese]
• [Study on automatic segmentation of color images applied to blood cells]
• [Study on high performance liquid chromatography/indirect photometric detection of fosfomycin with acridine as detection reagent]
• [Study on the application of number fluorescence density in detecting autoantibodies titer]
• [The effects of surface morphology of calcium phosphate ceramics on apatite formation in dynamic SBF]
• [Transforming growth factor beta(1) and bone morphogenetic protein 2 induce the differentiation of odontoblasts in vitro]
• [Vector propagation algorithm based ECG simulation of bundle branch block]