scholarly journals First photographic records of the giant manta ray Manta birostris off eastern Australia

2014 ◽  
Author(s):  
Lydie I. E. Couturier ◽  
Fabrice R. A. Jaine ◽  
Tom Kashiwagi
Keyword(s):  
East Coast ◽  
New South ◽  
North East ◽  
The North ◽  
South Wales ◽  
Photographic Evidence ◽  
Eastern Australia ◽  
Manta Birostris ◽  
Australian Coastline ◽  
Manta Ray

We present the first photographic evidence of the presence of the giant manta ray Manta birostris in east Australian waters. Two individuals were photographed off Montague Island in New South Wales and off the north east coast of Tasmania, during summer 2012 and 2014, respectively. These sightings confirm previous unverified reports on the species occurrence and extending the range of M. birostris to 40ºS. We discuss these findings in the context of the species’ migratory ecology, the regional oceanography along the south eastern Australian coastline and local productivity events.

scholarly journals First photographic records of the giant manta ray Manta birostris off eastern Australia

2014 ◽  
Author(s):  
Lydie I. E. Couturier ◽  
Fabrice R. A. Jaine ◽  
Tom Kashiwagi
Keyword(s):  
East Coast ◽  
New South ◽  
North East ◽  
The North ◽  
South Wales ◽  
Photographic Evidence ◽  
Eastern Australia ◽  
Manta Birostris ◽  
Australian Coastline ◽  
Manta Ray

We present the first photographic evidence of the presence of the giant manta ray Manta birostris in east Australian waters. Two individuals were photographed off Montague Island in New South Wales and off the north east coast of Tasmania, during summer 2012 and 2014, respectively. These sightings confirm previous unverified reports on the species occurrence and extending the range of M. birostris to 40ºS. We discuss these findings in the context of the species’ migratory ecology, the regional oceanography along the south eastern Australian coastline and local productivity events.

Geographical and Temporal Distribution of the Common Armyworm, Mythimna Convecta (Lepidoptera: Noctuidae), in Eastern Australia: Larval Habitats and Outbreaks

1995 ◽  
Vol 43 (6) ◽  
pp. 601 ◽  
Author(s):  
G Mcdonald ◽  
TR New ◽  
RA Farrow
Keyword(s):  
Arid Regions ◽  
East Coast ◽  
New South ◽  
New South Wales ◽  
Age Distribution ◽  
Winter Period ◽  
Atmospheric Conditions ◽  
North East ◽  
South Wales ◽  
Eastern Australia

Surveys for juvenile Mythimna convecta throughout the agricultural and arid regions of eastern Australia were conducted from 1986 to 1989. Armyworm populations north of 33 degrees S were generally dominated by M. convecta, and further south by Persectania ewingii. M. convecta was most widely distributed in spring. Incidence during autumn and winter ranged from very low in Victoria to high in northern New South Wales and southern Queensland. Summer infestations were found mostly on the south-east coast where favourable habitats were abundant. Colonised habitats included extremely arid regions, where small numbers of larvae were associated with grasses in temporary watercourses, and the higher-rainfall, eastern regions. The largest infestations occurred in south-east Queensland and north central and north-east New South Wales, particularly after heavy autumn rains. There appeared to be two generations of M. convecta over the autumn/winter period: the first a synchronised event starting on the autumn rains and the second commencing in June/July and comprising a wide spread in age distribution. The progeny of the winter generation are probably the source of most economic outbreaks. Mythimna convecta larvae were collected from subtropical and temperate grasses. In the former, most larvae were found in tussocks, particularly of Dichanthium sericeum and Chloris truncata, which provided a dense, fine-leaf crown and canopy. After good autumn rainfall and vegetative growth, the wiry-stemmed tussocks, including Astrebla spp. and C. ciliaris, were also common hosts. The temperate grasses, particularly Avena fatua and Hordeum leporinum, were the main winter hosts although the greatest densities were found only in thick swards of growth, particularly those that contained dried grass. Two of the largest surveys, in autumn 1987 and 1988, followed periods of heavy rain and provided strongly contrasting results. The 1987 survey of central and south-west Queensland located no M. convecta larvae, indicating that densities were below detection thresholds. The paucity of larvae was attributed to lack of suitable atmospheric conditions to assist moth immigrations and absence of adequate populations in potential source areas. The 1988 survey revealed a major outbreak of M. convecta larvae in south-east Queensland and northern New South Wales. The area received record rains during early April of that year, and the outbreak probably arose from moth migrations from the east and south-east coast. An outbreak of similar scale occurred after further heavy autumn rains in 1989.

Predation of livestock by wild dogs in eastern New South Wales.

1989 ◽  
Vol 11 (2) ◽  
pp. 61 ◽  
Author(s):  
PJS Fleming ◽  
TJ Korn
Keyword(s):  
New South ◽  
New South Wales ◽  
Coastal Region ◽  
North East ◽  
The North ◽  
East Region ◽  
South Wales ◽  
Control Programmes ◽  
June July ◽  
Wild Dogs

A monthly survey involving officers from eastern New South Wales Pastures Protection Boards was conducted over four years from 1982 to 1985. Information was collected on the number and type of livestock attacked within each board district, sightings of wild dogs, the number of wild dogs kiied, the method by which they were kiied and the locations at which the observations occurred. A total of 25,644 livestock animals were reported killed or wounded from four regions; the North-East Coastal Region, the North-East Tablelands Region, the Central-East Region and South-East Region. Sheep were the most commonly attacked domestic animals followed by cattle and goats. Regional differences were apparent in the type of livestock killed and seasonal patterns of predation were evident. We recommend that annual control programmes be brought forward from June/July to late April in order to precede predation peaks.

Crayfish bio-gastroliths from eastern Australia and the middle Cretaceous distribution of Parastacidae

2019 ◽  
Vol 157 (7) ◽  
pp. 1023-1030
Author(s):  
Phil R. Bell ◽  
Russell D. C. Bicknell ◽  
Elizabeth T. Smith
Keyword(s):  
Southern Hemisphere ◽  
Rift Valley ◽  
Fossil Record ◽  
New South ◽  
Significant Proportion ◽  
Freshwater Ecosystems ◽  
The North ◽  
Calcium Storage ◽  
South Wales ◽  
Eastern Australia

AbstractFossil crayfish are typically rare, worldwide. In Australia, the strictly Southern Hemisphere clade Parastacidae, while ubiquitous in modern freshwater systems, is known only from sparse fossil occurrences from the Aptian–Albian of Victoria. We expand this record to the Cenomanian of northern New South Wales, where opalized bio-gastroliths (temporary calcium storage bodies found in the foregut of pre-moult crayfish) form a significant proportion of the fauna of the Griman Creek Formation. Crayfish bio-gastroliths are exceedingly rare in the fossil record but here form a remarkable supplementary record for crayfish, whose body and trace fossils are otherwise unknown from the Griman Creek Formation. The new specimens indicate that parastacid crayfish were widespread in eastern Australia by middle Cretaceous time, occupying a variety of freshwater ecosystems from the Australian–Antarctic rift valley in the south, to the near-coastal floodplains surrounding the epeiric Eromanga Sea further to the north.

Does fox baiting threaten the spotted-tailed quoll, Dasyurus maculatus?

2003 ◽  
Vol 30 (2) ◽  
pp. 111 ◽  
Author(s):  
Gerhard Körtner ◽  
Shaan Gresser ◽  
Bob Harden
Keyword(s):  
Rhodamine B ◽  
Red Fox ◽  
New South ◽  
Control Programs ◽  
North East ◽  
South Wales ◽  
Eastern Australia ◽  
Bait Station ◽  
Radio Transmitters ◽  
Bait Stations

In Australia, baiting with 1080 (sodium fluoroacetate) is widely used to reduce predation of native wildlife by the red fox. However, such control programs may place some native carnivores at risk, particularly the spotted-tailed quoll in eastern Australia. We measured the mortality in a total of 57 quolls fitted with mortality radio-transmitters during four experimental fox baitings with Foxoff® 1080 baits containing Rhodamine B in north-east New South Wales. In all experiments quolls visited bait stations regularly and removed a total of 20 baits. All but one of these baits was found in the vicinity of the bait station, indicating that quolls did not ingest baits. This was confirmed by the absence of Rhodamine B in the vibrissae of all quolls retrapped after baiting. The only quoll that may have died from a bait had eaten a cached bait some six weeks after baiting concluded. Thus, baiting did not threaten any of the quoll populations sampled. Therefore it appears that most restrictions imposed to protect spotted-tailed quolls during fox baiting are unnecessary as long as this bait type is used.

The biology and associations of Fergusobia (Nematoda) from the Melaleuca leucadendra-complex in eastern Australia

2004 ◽  
Vol 18 (3) ◽  
pp. 291 ◽  
Author(s):  
Kerrie A. Davies ◽  
Robin M. Giblin-Davis
Keyword(s):  
New Species ◽  
New South ◽  
New South Wales ◽  
Monophyletic Group ◽  
North East ◽  
South Wales ◽  
Eastern Australia ◽  
Meristematic Tissues ◽  
Mutualistic Association ◽  
Melaleuca Leucadendra

Nematodes of the genus Fergusobia Currie (Tylenchida : Neotylenchidae) and flies of the genus Fergusonina Malloch (Diptera : Fergusoninidae) together form the only known mutualistic association between insects and nematodes that induces galls in young meristematic tissues in Myrtaceae. Six new species of Fergusobia are described (F. quinquenerviae, sp. nov., F. cajuputiae, sp. nov., F. dealbatae, sp. nov., F. leucadendrae, sp. nov., F.�nervosae, sp. nov., and F. viridiflorae, sp. nov.) and partial descriptions are presented for a further two species. Together, these taxa form a putative monophyletic group, apparently restricted to species of Melaleuca in the broad-leaved M. leucadendra-complex, from coastal Queensland and north-east New South Wales, Australia. Each species of nematode has a mutualistic association with a particular species of Fergusonina fly and (with one exception) each association is apparently restricted to one particular species of Melaleuca.

Seed Dispersal by Emus on the New South Wales North-east Coast

1999 ◽  
Vol 99 (4) ◽  
pp. 248-252 ◽  
Author(s):  
R.J. McGrath ◽  
D. Bass
Keyword(s):  
Seed Dispersal ◽  
East Coast ◽  
New South ◽  
New South Wales ◽  
North East ◽  
South Wales

An Overview of The Status and Management of Rock-wallabies (Petrogale) In New South Wales.

1996 ◽  
Vol 19 (2) ◽  
pp. 163
Author(s):  
L. Dovey ◽  
V. Wong ◽  
P. Bayne
Keyword(s):  
New South ◽  
New South Wales ◽  
Major Threat ◽  
The North ◽  
South Wales ◽  
Eastern Australia ◽  
Management Plans ◽  
The Status ◽  
The Media ◽  
Recovery Program

Two species of rock-wallabies occur in New South Wales; the Yellow-footed Rock-wallaby Petrogale xanthopus in the far west and the Brush-tailed Rock-wallaby Petrogale penicillata in the east. Both species have contracted in distribution and abundance across their former range and are threatened in NSW. The P. xanthopus population in NSW now comprises only two sub-populations. Removal of large numbers of goats, thought to be the primary threat, has not halted the wallaby's decline. Fox and cat predation is now considered the major threat. Fox control is currently being conducted. P. penicillata has undergone a dramatic and continuing decline from being common throughout south-eastern Australia to currently being extremely rare in the southern and western parts of its range and found only in isolated colonies throughout the north of its range. Predation (particularly fox, but including dog and cat), once again, is considered the major threat. A recovery program has been commenced involving the media and wider community in locating extant colonies, as well as developing and implementing Population Management Plans. This program has documented further local extinctions and extremely low numbers of individuals in colonies in the southern and western parts of the range. While no surviving colonies are known between the Shoalhaven area and the Victorian border, there remain more and larger colonies in the north of the state.

Ecotypic variation in Avena fatua L., A. sterilis L. (A. ludoviciana), and A. barbata Pott. in New South Wales and southern Queensland

1972 ◽  
Vol 23 (5) ◽  
pp. 799 ◽  
Author(s):  
RDB Whalley ◽  
JM Burfitt
Keyword(s):  
New South ◽  
Morphological Variability ◽  
New South Wales ◽  
Strong Response ◽  
Avena Sterilis ◽  
Multiple Introductions ◽  
The North ◽  
South Wales ◽  
Eastern Australia ◽  
Two Samples

Some 53 samples of wild oat seeds were collected in the wheat belt of eastern Australia in an area extending from Collingulie in southern New South Wales to Dalby in Queensland and grown under uniform environmental conditions. Three species of wild oats were collected, Avena sterilis L. subsp. ludoviciana (Dur.) G. & M. mainly concentrated in the north, A. fatua L. subsp. fatua (L.) Thell. mainly concentrated in the south, and A. barbata Pott. confined to the Southern Tablelands and nearby slopes and plains. A high degree of physiological and morphological variability was evident, A. sterilis exhibiting the greatest variability and A. barbata the least. The variation was mainly local with only a suggestion of ecoclinal variation, and is probably the result of multiple introductions. The two samples of A. barbata tested exhibited a vernalization requirement for flowering and one sample of A. sterilis from the same area also gave a strong response to vernalization, but A. fatua did not.

Marine red algae of the Coffs Harbour region, northern New South Wales

1990 ◽  
Vol 3 (3) ◽  
pp. 293 ◽  
Author(s):  
AJK Millar
Keyword(s):  
South Africa ◽  
Red Algae ◽  
New Genus ◽  
New Records ◽  
New South ◽  
New Combinations ◽  
The North ◽  
South Wales ◽  
Eastern Australia ◽  
North Eastern

The marine benthic red algae of the Coffs Harbour region are described and illustrated in detail. The survey constitutes the first ever detailed descriptive and illustrative mainland regional monograph of any area along the entire eastern Australian seaboard. Collections made intertidally and to depths of 20 m have included 119 species in 74 genera, 26 families, and 8 orders of Rhodophyta, of which 54 (45%) were previously unrecorded from eastern Australia, 22 (18%) are new records for the whole of Australia (16 being new Southern Hemisphere records), 1 (Dictyothumnion) constitutes a new genus, and 16 (13%) are new species in the genera Gracilaria, Curdiea, Botryocladia, Dictyothamnion, Antithamnion, Ceramium, Callithumnion, Anotrichium, Nitophyllum, Phycodrys, Apoglossum, Dasya, Fernandosiphonia, and Herposiphonia. Also included are major Australian revisions of the genera Martensia and Nitophyllum, and six new combinations are proposed (Chondria infestans, Curdiea angustata, Dasya pilosa, Haraldiophyllum sinuosum, Myriogramme pulchellum, and Stenograrnme phyllophoroides). The Coffs Harbour flora, although related to the north-eastern and, to a lesser degree, southern Australian floras, has a number of species previously known only from much more remote localities, such as Japan (6 species), California (4 species), New Zealand (3 species), India (2 species), South America (2 species), the Galapagos Islands (1 species), China (1 species), South Africa (1 species), and the Mediterranean (1 species). Twelve of the 22 species newly recorded for Australia show a definite western Pacific distribution, a region with which the overall Coffs Harbour flora has strong affinities.

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