Notes on the size structure of a population of the Jacky Dragon Amphibolurus muricatus in a small fragmented urban remnant

Dennis John Hitchen, Shelley Burgin, Danny Wotherspoon

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

The Jacky Dragon Amphibolurus muricatus (White, ex Shaw) is a widespread and abundant species in eastern Australia. Its range overlaps some of the more heavily populated urban areas of Australia where natural habitat is being rapidly lost and/or fragmented. We collected Jacky Dragons over four years in extremely fragmented native remnant vegetation at the edge of an urban golf course in Sydney. The size structure of the population remained similar over the study period. However, there was a lack of large individuals, both male and female. The sex ratio of adult males and females was equivalent rather than conform to the expectation that there would be more females than males in this temperature-dependent sex determined species. Increased sexual aggression and loss during migration were the most likely causes for the loss of larger individuals and for the loss of female bias. These imbalances are predicted to threaten the longer term viability of this urban reptile population.

Original languageEnglish
Pages (from-to)237-243
Number of pages7
JournalPacific Conservation Biology
Volume16
Issue number4
DOIs
Publication statusPublished - 2011
Externally publishedYes

Fingerprint

size structure
golf course
aggression
reptile
sex ratio
viability
urban area
vegetation
habitat
loss
temperature

Cite this

Hitchen, Dennis John ; Burgin, Shelley ; Wotherspoon, Danny. / Notes on the size structure of a population of the Jacky Dragon Amphibolurus muricatus in a small fragmented urban remnant. In: Pacific Conservation Biology. 2011 ; Vol. 16, No. 4. pp. 237-243.
@article{8e18a0a2efba44b5aeb8ccb802306f96,
title = "Notes on the size structure of a population of the Jacky Dragon Amphibolurus muricatus in a small fragmented urban remnant",
abstract = "The Jacky Dragon Amphibolurus muricatus (White, ex Shaw) is a widespread and abundant species in eastern Australia. Its range overlaps some of the more heavily populated urban areas of Australia where natural habitat is being rapidly lost and/or fragmented. We collected Jacky Dragons over four years in extremely fragmented native remnant vegetation at the edge of an urban golf course in Sydney. The size structure of the population remained similar over the study period. However, there was a lack of large individuals, both male and female. The sex ratio of adult males and females was equivalent rather than conform to the expectation that there would be more females than males in this temperature-dependent sex determined species. Increased sexual aggression and loss during migration were the most likely causes for the loss of larger individuals and for the loss of female bias. These imbalances are predicted to threaten the longer term viability of this urban reptile population.",
author = "Hitchen, {Dennis John} and Shelley Burgin and Danny Wotherspoon",
year = "2011",
doi = "10.1071/PC110237",
language = "English",
volume = "16",
pages = "237--243",
journal = "Pacific Conservation Biology",
issn = "1038-2097",
publisher = "Surrey Beatty and Sons Pty Ltd",
number = "4",

}

Notes on the size structure of a population of the Jacky Dragon Amphibolurus muricatus in a small fragmented urban remnant. / Hitchen, Dennis John; Burgin, Shelley; Wotherspoon, Danny.

In: Pacific Conservation Biology, Vol. 16, No. 4, 2011, p. 237-243.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Notes on the size structure of a population of the Jacky Dragon Amphibolurus muricatus in a small fragmented urban remnant

AU - Hitchen, Dennis John

AU - Burgin, Shelley

AU - Wotherspoon, Danny

PY - 2011

Y1 - 2011

N2 - The Jacky Dragon Amphibolurus muricatus (White, ex Shaw) is a widespread and abundant species in eastern Australia. Its range overlaps some of the more heavily populated urban areas of Australia where natural habitat is being rapidly lost and/or fragmented. We collected Jacky Dragons over four years in extremely fragmented native remnant vegetation at the edge of an urban golf course in Sydney. The size structure of the population remained similar over the study period. However, there was a lack of large individuals, both male and female. The sex ratio of adult males and females was equivalent rather than conform to the expectation that there would be more females than males in this temperature-dependent sex determined species. Increased sexual aggression and loss during migration were the most likely causes for the loss of larger individuals and for the loss of female bias. These imbalances are predicted to threaten the longer term viability of this urban reptile population.

AB - The Jacky Dragon Amphibolurus muricatus (White, ex Shaw) is a widespread and abundant species in eastern Australia. Its range overlaps some of the more heavily populated urban areas of Australia where natural habitat is being rapidly lost and/or fragmented. We collected Jacky Dragons over four years in extremely fragmented native remnant vegetation at the edge of an urban golf course in Sydney. The size structure of the population remained similar over the study period. However, there was a lack of large individuals, both male and female. The sex ratio of adult males and females was equivalent rather than conform to the expectation that there would be more females than males in this temperature-dependent sex determined species. Increased sexual aggression and loss during migration were the most likely causes for the loss of larger individuals and for the loss of female bias. These imbalances are predicted to threaten the longer term viability of this urban reptile population.

UR - http://www.scopus.com/inward/record.url?scp=80052680459&partnerID=8YFLogxK

U2 - 10.1071/PC110237

DO - 10.1071/PC110237

M3 - Article

VL - 16

SP - 237

EP - 243

JO - Pacific Conservation Biology

JF - Pacific Conservation Biology

SN - 1038-2097

IS - 4

ER -