An emergence study of Petalura gigantea (Odonata: Petaluridae)

Ian R C Baird, Shelley Burgin

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

Emergence studies in Odonata provide information on the behaviour, ecology and fundamental demographic parameters in population studies. This paper reports on a study of sex ratio at emergence, pattern and duration of the emergence season, and potential cohort splitting in Petalura gigantea. Sex ratio at emergence varied among years, habitat patches and swamp types. Across all collections, sex ratio varied significantly from a 1:1 ratio, with a bias towards females. The duration of the emergence season varied between sites and years, from at least 45 to at least 70 days, potentially commencing by late October and extending into early January and possibly beyond. Although some evidence suggested cohort splitting, it was not confirmed. Observations of spatially and temporally aggregated emergence clusters are consistent with observed oviposition patterns of individual females, suggesting cohort emergence. Observations of mortalities at emergence and of emergence location are provided; the latter should assist researchers and resource managers in identifying breeding sites in heterogeneous swamp vegetation.

Original languageEnglish
Pages (from-to)193-211
Number of pages19
JournalInternational Journal of Odonatology
Volume16
Issue number3
DOIs
Publication statusPublished - 2013

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Petaluridae
Odonata
eclosion
sex ratio
swamps
swamp
Petalura gigantea
duration
breeding site
oviposition
breeding sites

Cite this

Baird, Ian R C ; Burgin, Shelley. / An emergence study of Petalura gigantea (Odonata : Petaluridae). In: International Journal of Odonatology. 2013 ; Vol. 16, No. 3. pp. 193-211.
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An emergence study of Petalura gigantea (Odonata : Petaluridae). / Baird, Ian R C; Burgin, Shelley.

In: International Journal of Odonatology, Vol. 16, No. 3, 2013, p. 193-211.

Research output: Contribution to journalArticleResearchpeer-review

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