Craniofacial heterochrony and sexual dimorphism in the short-tailed opossum (Monodelphis domestica)

M. Maunz, R. Z. German

Research output: Contribution to journalArticle

Abstract

Craniofacial growth of the short-tailed opossum, Monodelphis domestica, was measured to determine differences in growth between bones of the viscerocranium and of the neurocranium and between sexes. Initially, the relative lengths of neurocranial to viscerocranial bones were about the same for both sexes. Viscerocranial bones grew at a faster rate in both sexes, while neurocranial bones grew for a longer period of time at a slower rate. Although females exhibited faster rates of growth, they ultimately had smaller skulls than males, because males were initially larger and grew for a longer period of time. Differences in patterns of growth of the two regions of the skull probably are associated with changes in masticatory function due to weaning and development of the brain.

Original languageEnglish (US)
Pages (from-to)992-1005
Number of pages14
JournalJournal of Mammalogy
Volume77
Issue number4
StatePublished - Nov 1996
Externally publishedYes

Fingerprint

Monodelphis
Monodelphis domestica
opossums
sexual dimorphism
Sex Characteristics
bone
bones
Skull
Bone and Bones
Growth
skull
gender
Bone Development
Weaning
weaning
brain
Brain
rate

Keywords

  • craniofacial
  • growth
  • heterochrony
  • Monodelphis domestica
  • opossum
  • sexual dimorphism
  • skull

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Craniofacial heterochrony and sexual dimorphism in the short-tailed opossum (Monodelphis domestica). / Maunz, M.; German, R. Z.

In: Journal of Mammalogy, Vol. 77, No. 4, 11.1996, p. 992-1005.

Research output: Contribution to journalArticle

@article{34b0e6d364994c8cabe5132a67425f67,
title = "Craniofacial heterochrony and sexual dimorphism in the short-tailed opossum (Monodelphis domestica)",
abstract = "Craniofacial growth of the short-tailed opossum, Monodelphis domestica, was measured to determine differences in growth between bones of the viscerocranium and of the neurocranium and between sexes. Initially, the relative lengths of neurocranial to viscerocranial bones were about the same for both sexes. Viscerocranial bones grew at a faster rate in both sexes, while neurocranial bones grew for a longer period of time at a slower rate. Although females exhibited faster rates of growth, they ultimately had smaller skulls than males, because males were initially larger and grew for a longer period of time. Differences in patterns of growth of the two regions of the skull probably are associated with changes in masticatory function due to weaning and development of the brain.",
keywords = "craniofacial, growth, heterochrony, Monodelphis domestica, opossum, sexual dimorphism, skull",
author = "M. Maunz and German, {R. Z.}",
year = "1996",
month = "11",
language = "English (US)",
volume = "77",
pages = "992--1005",
journal = "Journal of Mammalogy",
issn = "0022-2372",
publisher = "Allen Press Inc.",
number = "4",

}

TY - JOUR

T1 - Craniofacial heterochrony and sexual dimorphism in the short-tailed opossum (Monodelphis domestica)

AU - Maunz, M.

AU - German, R. Z.

PY - 1996/11

Y1 - 1996/11

N2 - Craniofacial growth of the short-tailed opossum, Monodelphis domestica, was measured to determine differences in growth between bones of the viscerocranium and of the neurocranium and between sexes. Initially, the relative lengths of neurocranial to viscerocranial bones were about the same for both sexes. Viscerocranial bones grew at a faster rate in both sexes, while neurocranial bones grew for a longer period of time at a slower rate. Although females exhibited faster rates of growth, they ultimately had smaller skulls than males, because males were initially larger and grew for a longer period of time. Differences in patterns of growth of the two regions of the skull probably are associated with changes in masticatory function due to weaning and development of the brain.

AB - Craniofacial growth of the short-tailed opossum, Monodelphis domestica, was measured to determine differences in growth between bones of the viscerocranium and of the neurocranium and between sexes. Initially, the relative lengths of neurocranial to viscerocranial bones were about the same for both sexes. Viscerocranial bones grew at a faster rate in both sexes, while neurocranial bones grew for a longer period of time at a slower rate. Although females exhibited faster rates of growth, they ultimately had smaller skulls than males, because males were initially larger and grew for a longer period of time. Differences in patterns of growth of the two regions of the skull probably are associated with changes in masticatory function due to weaning and development of the brain.

KW - craniofacial

KW - growth

KW - heterochrony

KW - Monodelphis domestica

KW - opossum

KW - sexual dimorphism

KW - skull

UR - http://www.scopus.com/inward/record.url?scp=0030464218&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030464218&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0030464218

VL - 77

SP - 992

EP - 1005

JO - Journal of Mammalogy

JF - Journal of Mammalogy

SN - 0022-2372

IS - 4

ER -