Bibliography Record

x
 
 Marsh, Helene D.; Heinsohn, George Edwin; Marsh, Lachlan M. (detail)
   
1984
Breeding cycle, life history and population dynamics of the dugong, Dugong dugon (Sirenia: Dugongidae).
Austral. Jour. Zool. 32(6): 767-788. 5 tabs. 3 figs.
–Reports that fertility is discontinuous in both males and females; calving is diffusely seasonal; neonates are 1.0-1.3 m long; sexual maturity is attained at 2.2-2.5 m and at least 9-10 years; gestation lasts about 1 year and lactation at least 1.5 years; the sex ratio is 1:1; the calving interval is 3-7 years; mortality is more important than the age of maturity in influencing population dynamics; estrus can occur during lactation; the low nutritive value of seagrasses may explain the discontinuous fertility; and the delay in maturity may be density-dependent. Gives original accounts of three births, one shark attack, and one case of males fighting with their tusks.

Related Index Records (23)

Accidental Death or Injury
(SEE ALSO: Conservation; Hunting and Capture; Natural Death or Injury)
  x 1984 Marsh, Heinsohn & Marsh (DD; Australia; possible biases in shark-net data, 773, 778; survivorship & mortality, 778-780.)
Aerial Surveys of Distribution
  x 1984 Marsh, Heinsohn & Marsh (DD; Australia; observations of calves; 771-772, 774-776.)
Australia
  x 1984 Marsh, Heinsohn & Marsh (DD; breeding & population dynamics; 767-788.)
Behavior, Aggregative
(SEE ALSO: Aerial Surveys of Distribution)
  x 1984 Marsh, Heinsohn & Marsh (DD; Queensland; herd of 63; 775-776.)
Behavior, Agonistic and Territorial
  x 1984 Marsh, Heinsohn & Marsh (DD; fighting with tusks; 780.)
Behavior, Sexual
(SEE ALSO: Birth and Breeding)
  x 1984 Marsh, Heinsohn & Marsh (DD; review; 780-781.)
Behavior, Shelter-seeking or Escape
(SEE ALSO: Hunting and Capture; Migration and Movements; Natural Death or Injury; Temperature, Effects of)
  x 1984 Marsh, Heinsohn & Marsh (DD; calving in shallow water; 780.)
Birth and Breeding
(SEE ALSO: Age Determination; Behavior, Sexual; Population Biology; Urogenital System)
  x * 1984 Marsh, Heinsohn & Marsh (DD; life history & population dynamics, 767-788; parturition, 773, 788.)
Conservation
(SEE ALSO: Accidental Death or Injury; Economic Uses; Hunting and Capture; Weed Control)
  x 1984 Marsh, Heinsohn & Marsh (DD; Australia; implications of population dynamics; 785.)
Dugong dugon (Müller, 1776) Palmer, 1895
  x * 1984 Marsh, Heinsohn & Marsh (reproduction & population dynamics; 767-788.)
Food
(SEE ALSO: Behavior, Ingestive; Captivity, Sirenians in; Digestive System; Food Plants; Weed Control) (NOTE: Plants reported as part of the captive but not the natural diet of sirs. will not necessarily be found under Food Plants. Papers referring to them are, however, indexed here.)
  x 1984 Marsh, Heinsohn & Marsh (DD; low nutritive value of seagrasses; fertilization of seagrass beds by rain & silt runoff; effects of nutrition on reproduction; 782-784.)
Food Plants: Enhalus acoroides
(Hydrocharitaceae)
  x 1984 Marsh, Heinsohn & Marsh (Australia; 783.)
Hunting and Capture
(SEE ALSO: Accidental Death or Injury; Archeological Sites, Sirenians at; Captivity, Sirenians in; Conservation; Economic Use; Natural Enemies; Weed Control)
  x 1984 Marsh, Heinsohn & Marsh (DD; Australia; Aborigines' reluctance to kill "wati dangal"; 783.)
Milk
(SEE ALSO: Behavior, Epimeletic; Behavior, Ingestive)
  x 1984 Marsh, Heinsohn & Marsh (DD; lactation; 773, 776, 783.)
Natural Enemies
(SEE ALSO: Natural Death or Injury)
  x 1984 Marsh, Heinsohn & Marsh (DD; Australia; attack by tiger shark; 788.)
Parasitology
(SEE ALSO: Bacteriology; Community Ecology; Parasites)
  x 1984 Marsh, Heinsohn & Marsh (DD; barnacles; 772.)
Phylogeny and Affinities of the Sirenia and/or Desmostylia
(SEE ALSO under species)
  x 1984 Marsh, Heinsohn & Marsh (trichechid-dugongid separation ?30 million years old; 781.)
Population Biology
(SEE ALSO: Aerial Surveys of Distribution; Age Determination; Birth and Breeding)
  x * 1984 Marsh, Heinsohn & Marsh (DD; Australia; 767-788.)
Salinity Tolerance
(SEE ALSO: Behavior, Ingestive)
  x 1984 Marsh, Heinsohn & Marsh (DD; ?water-balance stress of lactation; 783.)
Temperature, Effects of
(SEE ALSO: Behavior, Shelter-seeking or Escape; Migration & Movements; Natural Death or Injury; Pollution, Effects of; Thermoregulation)
  x 1984 Marsh, Heinsohn & Marsh (DD; seasonal breeding; 781-782.)
Trichechus inunguis (Natterer in von Pelzeln, 1883) Thomas and Lydekker, 1897
  x 1984 Marsh, Heinsohn & Marsh (seasonal calving, comp. w/ DD; 781, 783.)
Trichechus manatus Linnaeus, 1758
  x 1984 Marsh, Heinsohn & Marsh (reproduction, comp. w/ DD; 771, 781, 784.)
Urogenital System
(SEE ALSO: Excretion and Defecation)
  x 1984 Marsh, Heinsohn & Marsh (DD; gonadal activity; 768-771, 776-777, 783-784.)

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