Variable Mating Pattern In Tasmanian Native Hens (Gallinula mortierii): Correlates Of Reproductive Succes

Goldizen, Anne W., Putland, David A. and Goldizen, Alan R. (1998) Variable Mating Pattern In Tasmanian Native Hens (Gallinula mortierii): Correlates Of Reproductive Succes. Journal of Animal Ecology, 67 2: 307-317. doi:10.1046/j.1365-2656.1998.00191.x

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Author Goldizen, Anne W.
Putland, David A.
Goldizen, Alan R.
Title Variable Mating Pattern In Tasmanian Native Hens (Gallinula mortierii): Correlates Of Reproductive Succes
Journal name Journal of Animal Ecology   Check publisher's open access policy
ISSN 0021-8790
Publication date 1998-03-01
Year available 1998
Sub-type Article (original research)
DOI 10.1046/j.1365-2656.1998.00191.x
Open Access Status File (Author Post-print)
Volume 67
Issue 2
Start page 307
End page 317
Total pages 11
Place of publication OXFORD
Language eng
Subject 270707 Sociobiology and Behavioural Ecology
Abstract 1. The Tasmanian native hen (Gallinula mortierii) exhibits mate-sharing by both males and females, with monogamy, polyandry, polygyny and polygynandry all occurring in a single population. 2. Multivariate models are used to investigate the relationships between reproductive success and a number of aspects of group compositions and territories in a population of Tasmanian native hens studied at Maria Island, Tasmania, Australia, over five breeding seasons. 3. Mating pattern did not remain a significant explanatory variable in most of the models of the factors affecting reproductive success, suggesting that the reproductive success of individuals is not affected by their mating pattern. The only exception was that mating pattern was significantly related to clutch size, because co-breeding females laid combined clutches. 4. Breeding success (per group, per breeding male and per breeding female) was most significantly related to the total length of edge between short pasture and tall, dense vegetative cover present in a territory. It is proposed that edges between short pasture and cover allow the Tasmanian native hens' precocious chicks to be near good feeding areas while also remaining close to protective cover. 5. Individual components of breeding success were most significantly related to different variables. The presence of water in the territory increased the probability that a group laid eggs. Clutch size was most affected by a group's mating pattern. Hatching success increased with the number of adults in a group. Chick survival increased with the length of pasture/cover edge in a group's territory. 6. The probability that mate-sharing by males occurred in a group was positively related to the total length of pasture/cover edge in the group's territory. There was no such relationship for mate-sharing by females. 7. These models suggest that individuals do not incur any net costs from sharing mates and that such sharing may allow some individuals to breed in higher-quality territories than those to which they would otherwise have access.
Keyword tasmanian native hen
cooperative breeding
reproductive success
Gallinula mortierii
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes Originally published as Anne W. Goldizen, David A. Putland and Alan R. Goldizen (1998) Variable mating patterns in Tasmanian native hens (Gallinula mortierii): correlates of reproductive success, Journal of Animal Ecology, 67 (2): 307-317. Copyright 1998 Blackwell Publishing. All rights reserved.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Biological Sciences Publications
Ecology Centre Publications
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Citation counts: TR Web of Science Citation Count  Cited 18 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 20 times in Scopus Article | Citations
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Created: Fri, 14 Jan 2005, 10:00:00 EST by David Putland