Seedling recruitment, seed persistence and aspects of dispersal ecology of the invasive moth vine, Araujia sericifera (Asclepiadaceae)
Gabrielle Vivian-Smith A B and F. Dane Panetta AA Alan Fletcher Research Station, Department of Natural Resources and Mines, PO Box 36, Sherwood, Qld 4075, Australia.
B Corresponding author. Email: Gabrielle.Viviansmith@nrm.qld.gov.au
Australian Journal of Botany 53(3) 225-230 https://doi.org/10.1071/BT04118
Submitted: 16 August 2004 Accepted: 14 December 2004 Published: 26 May 2005
Abstract
We investigated germination, seedling emergence and seed persistence of the invasive moth vine (Araujia sericifera Brot.) under controlled and field conditions in south-eastern Queensland. Fresh seed showed high viability (99.5%) and germinated readily, with 97.2% of all recorded germinations occurring within 14 days. Mean germination rates ranged from 74 to 100% across the range of temperature (10/20°C, 15/25°C and 20/30°C alternating 12-h thermoperiods) and light (0- and 12-h photoperiods) treatments. Germination was significantly reduced only under cool, dark conditions. In a 24-month field experiment, seedling emergence was greatest for seeds buried at 1 cm (mean = 96.3%), intermediate for seeds buried at 5 cm (mean = 62.7%) and least for surface-sown seeds (mean = 30.7%). Seed persistence under field conditions was low, declining rapidly to 3.9% at 6 months and to 0.67% at 24 months. Moth vine’s capacity to germinate readily and the rapid depletion of seeds under field conditions indicate that the species has a transient seed bank in south-eastern Queensland. In an additional experiment testing the capacity of seeds for secondary dispersal by water, the mean floating time of seeds was 15.4 days, suggesting that water could act as a secondary dispersal vector, contributing to long-distance dispersal. We recommend that surveillance methods for detecting moth-vine populations should consider both water-flow patterns and wind direction.
Acknowledgments
We thank Robert Galagher for technical assistance. Paul Donatiu, David Kington (Brisbane Forest Park) and Trevor Armstrong provided assistance in locating weed populations. Financial support was provided by the Queensland Department of Natural Resources and Mines. We also thank the anonymous reviewers for comments on a draft of this manuscript.
Altinözlü H, Dönmez AA
(2003) Araujia Brot: a new genus (Asclepiadaceae) record for Turkey. Turkish Journal of Botany 27, 231–233.
Armstrong, T (1998). Moth vine, Araujia sericifera, and its control. In ‘Proceedings of the 5th Queensland weed symposium’. pp. 59–60. (Queensland Weeds Society: Cairns)
Batianoff GN, Butler DW
(2002) Assessment of invasive naturalized plants in south-east Queensland. Plant Protection Quarterly 17, 27–34.
Bebawi FF,
Campbell SD, Lindsay AM
(2003) Effects of burial and age on viability of rubber vine (Cryptostegia grandiflora) seeds. Plant Protection Quarterly 18, 147–151.
Bellue MK
(1948) Bladderflower, Araujia sericifera Brot., an escaped ornamental in California. California Department of Agriculture Bulletin 37, 20–22.
Cappuccino N,
MacKey R, Eisner C
(2002) Spread of the invasive alien vine Vincetoxicum rossicum: tradeoffs between seed dispersability and seed quality. American Midland Naturalist 148, 263–270.
Carretero, JL (1989). The alien weed flora of the Valencian community (Spain). In ‘Proceedings of the 4th EWRS symposium on weed problems in Mediterranean climates. Vol. 2. Problems of weed control in fruit, horticultural crops and rice’. pp. 113–124. : Valencia, Spain)
Coulston, GJ (2002). Control of invasive plants on Poor Knights Islands, New Zealand. In ‘Turning the tide: the eradication of invasive species’. pp. 79–84. (IUCN SSC Invasive Species Specialist Group, IUCN: Gland, Switzerland)
Danin A
(2000) The inclusion of adventive plants in the second edition of flora Palaestina. Wildenowia 30, 305–314.
Dyer, RA (1975).
Edwards AL,
Wyatt R, Sharitz RR
(1994) Seed buoyancy and viability of the wetland milkweed, Asclepias perennis, and an upland milkweed, Asclepias exaltata.
Bulletin of the Torrey Botanical Club 121, 160–169.
Everist, SL (1981).
Forster PI, Bruyns PV
(1992) Clarificaton of the synonymy for the common moth-vine Araujia sericifera (Asclepiadaceae). Taxon 41, 746–749.
Grice AC
(1996) Seed production, dispersal and germination in Cryptostegia grandiflora and Ziziphus mauritiana, two invasive shrubs in tropical woodlands of northern Australia. Australian Journal of Ecology 21, 324–331.
Joseph, R (1999). Environmental weeds and their control with particular reference to rainforest remnant restoration. In ‘10th biennial noxious weeds conference: practical weed management: protecting agriculture and the environment’. pp. 136–145. (NSW Agriculture: Armidale, NSW)
Kleinschmidt, HE ,
and
Johnson, RW (1979).
Muyt, A (2001).
Oegema T, Fletcher RA
(1971) Factors that influence dormancy in milkweed seeds. Canadian Journal of Botany 50, 713–718.
Panetta FD
(2000) Fates of fruit and seeds of Ligustrum lucidum W.T.Ait. and L. sinense Lour. maintained under natural rainfall or irrigation. Australian Journal of Botany 48, 701–705.
| Crossref | GoogleScholarGoogle Scholar |
Pearce, RD (1986). Asclepiadaceae. In ‘Flora of South Australia’. pp. 1053–1059. (Government Printer: Adelaide)
Spellman DL, Gunn CR
(1976) Morrenia odorata and Araujia sericofera (Asclepiadaceae): weeds in citrus groves. Castanea 41, 139–148.
Stanley, TD ,
and
Ross, EM (1986).
Stearns RCC
(1887) Araujia albens as a moth-trap. American Naturalist 21, 501–507.
| Crossref | GoogleScholarGoogle Scholar |
Vivian-Smith, G ,
and
Panetta, FD (2004). Seed bank ecology of the invasive vine, cats claw creeper (Macfadyena unguis-cati (L.) A.Gentry. In ‘Proceedings of the 14th Australian Weeds Conference’. pp. 531–534. (Weed Society of New South Wales: Sydney)
Ward, BG ,
Henzel, RF ,
Holland, PT ,
and
Spiers, AG (1999). Non-spray methods to control invasive weeds in urban areas. In ‘Proceedings of the 52nd New Zealand plant protection conference’. pp. 1–5. (New Zealand Plant Protection Society: New Zealand)
Winks CJ, Fowler SV
(2000) Prospects for biological control of moth plant, Araujia sericifera (Asclepiadaceae). Landcare Regional Contract Report LC9900/100 Landcare Research, Auckland, New Zealand..
