Dispersal of Irradiated Queensland Fruit-Flies, Dacus-Tryoni (Froggatt) (Diptera, Tephritidae), in Southeastern Australia

Mark-release-recapture studies with laboratory-reared irradiated Dacus tryoni (Froggatt) were undertaken in summer in south-eastern Australia. These showed that flies can disperse up to 94 km, almost four times the furthest distance recorded previously for this species. Most recaptures beyond 6 km were east of the point of release. Several distant traps each caught more than one fly, indicating that the flies moved together over long distances. This suggests that mating could occur and that new infestations could result from the long-distance migration of adults.

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Movement and mortality of Australian pelicans (Pelecanus conspicillatus) banded at inland and coastal breeding sites in South Australia

Pacific Conservation Biology ◽

10.1071/pc14925 ◽

2015 ◽

Vol 21 (4) ◽

pp. 271 ◽

Cited By ~ 1

Author(s):

Gregory R. Johnston ◽

Maxwell H. Waterman ◽

Clare E. Manning

Keyword(s):

South Australia ◽

Population Declines ◽

Long Distance ◽

Breeding Sites ◽

Continental Scale ◽

South Eastern ◽

Eastern Australia ◽

Causes Of Mortality ◽

Conservation Concern ◽

South Eastern Australia

Globally, pelican populations have decreased, with three species being of conservation concern. Australian pelicans (Pelecanus conspicillatus) are not regarded as endangered, but have declined across south-eastern Australia. Information on their movements and causes of mortality are required to interpret the importance of these regional declines to the species’ global population. We explored patterns of movement and causes of mortality by analysing recoveries from 14 615 Australian pelicans banded over 37 years between 1969 and 2006. Data from 243 leg band recoveries showed that Australian pelicans move distances of up to 3206 km, and travel across the species’ entire geographic range, within a year of fledging. We found little evidence for the popular notion that these birds move en masse from the coast to inland areas in response to flooding rains. Maximum recorded age of a banded Australian pelican was 15 years. The banding data suggest that the regional pelican declines could reflect long-distance movements rather than an overall population response. However, a concentration of band returns from south-eastern Australia where the declines have been recorded, and the high incidence of human-induced deaths (16.4%) suggest otherwise. Accurate assessment of population trends in long-lived, long-distance nomads such as Australian pelicans requires assessment at a continental scale. Our results emphasise the importance of knowledge about fundamental aspects of a species’ biology for accurate interpretation of regional population declines.

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Some Collections of Vaucheria (Tribophyceae) From Southeastern Australia

Australian Journal of Botany ◽

10.1071/bt9870617 ◽

1987 ◽

Vol 35 (6) ◽

pp. 617 ◽

Cited By ~ 10

Author(s):

T Christensen

Keyword(s):

Line Drawings ◽

South Eastern ◽

Southeastern Australia ◽

Eastern Australia ◽

Unialgal Culture ◽

South Eastern Australia

Sixteen species of Vaucheria are recorded from south-eastern Australia, including V. conifera sp. nov. and V. mulleola subsp. calida subsp. nov. One sample is found to vary to such an extent, also in unialgal culture, that it agrees with the description of V. cruciata in some cases and with that of the later established V. arechavaletae in others: it is concluded that these two species should be merged into one. The collection stations are briefly characterised. The species are illustrated with line drawings, and the Australian material of previously described species is compared with what is known from elsewhere. Formation of galls, caused by the rotatorian Proales wernecki, has been observed in four species. Drawings are included of one gall of familiar shape and one of a shape not previously described, the latter formed by Vaucheria erythrospora, which has never been found with galls before.

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The Genus Clavulina (Basidiomycetes) in Southeastern Australia

Australian Journal of Botany ◽

10.1071/bt9860103 ◽

1986 ◽

Vol 34 (1) ◽

pp. 103

Author(s):

EJH Corner

Keyword(s):

South Eastern ◽

Southeastern Australia ◽

Eastern Australia ◽

South Eastern Australia

Mistakes are pointed out in the identification of four of the seven species of Clavulina recorded for south-eastern Australia by R. H. Petersen. Attention is drawn to other errors.

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