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Tuesday, July 14, 2020 | History

2 edition of Behaviour of swarm hoppers of the Australian plague locust Chortoicetes terminifera (Walker) found in the catalog.

Behaviour of swarm hoppers of the Australian plague locust Chortoicetes terminifera (Walker)

L. R. Clark

Behaviour of swarm hoppers of the Australian plague locust Chortoicetes terminifera (Walker)

by L. R. Clark

  • 261 Want to read
  • 11 Currently reading

Published in Melbourne .
Written in English

    Subjects:
  • Chortoicetes terminifera.

  • Classifications
    LC ClassificationsSB945.L7 C58
    The Physical Object
    Pagination27 p.
    Number of Pages27
    ID Numbers
    Open LibraryOL6072757M
    LC Control Number50012476
    OCLC/WorldCa5139957

      Several species of grasshoppers swarm as locusts in different parts of the world, on all continents except Antarctica and North America: [17] [18] [19] [lower-alpha 1] For example, the Australian plague locust (Chortoicetes terminifera) swarms across Australia. [17] The desert locust (Schistocerca gregaria) is probably the best known species owing to its wide distribution (North Africa, Middle. In spring , Victoria experienced high densities of the pest species Australian plague locust (APL) Chortoicetes terminifera. This posed the threat of the worst locust plague in Victoria in 75 years; and had the potential to cause wide spread devastation to the Victorian agricultural sector.

      There was a locust plague across northern Victoria when we were visiting on holidays and the kids had fun running through the resting locusts in the afternoon. The Australian plague locust, Chortoicetes terminifera, is a native insect. Usually eggs are laid in autumn, remain dormant during winter and hatch in spring; they develop according to temperature and moisture. Under ideal conditions, eggs laid in summer can hatch within 14–16File Size: KB.

    Adult Australian plague locusts (Chortoicetes terminifera) have been observed at a number of locations over about km in north-east Victoria, following the strong north westerly winds on the 28th and 29th September. These appear to be low densities of overwintering adults that may have hatched locally, or have been blown in from the NSW. But when large numbers are present they behave as a group or swarm, causing plagues. Locusts such as the Australian Plague Locust (Chortoicetes terminifera), the Spur-throated Locust (Austracris guttulosa) and the Migratory Locust (Locusta migratoria migratoriodes) can form plagues that cause massive damage to agricultural crops.


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Behaviour of swarm hoppers of the Australian plague locust Chortoicetes terminifera (Walker) by L. R. Clark Download PDF EPUB FB2

Get this from a library. Behaviour of swarm hoppers of the Australian plague locust Chortoicetes terminifera (Walker).

[L R Clark]. The Australian plague locust (Chortoicetes terminifera) is a native Australian insect in the family Acrididae, and a significant agricultural pest. Adult Australian plague locusts range in size from 20 to 45 mm in length, and the colour varies from brown to green.

In profile, the head is higher than the thorax, and the thorax has an X-shaped mark. The legs have a reddish shank and the wings Family: Acrididae. Introduction. In New South Wales, three species of locust are declared pest insects under the Local Land Services Act These are: Australian plague locust (Chortoicetes terminifera)migratory locust (Locusta migratoria)spur-throated locust (Austracris guttulosa).All three of these species can cause significant damage to pastures and crops, but the Australian plague locust occurs the most.

The Australian Plague Locust, Chortoicetes terminifera, is a native Australian insect. It occurs naturally in the far north west of New South Wales and adjacent areas of Queensland and South Australia, an area known as the channel country.

The Australian plague locust (Chortoicetes terminifera) regularly forms migratory bands and swarms, but is claimed not to express phase polyphenism and has accordingly been used to argue against a. Several species of grasshoppers swarm as locusts in different parts of the world, on all continents except Antarctica and North America: For example, the Australian plague locust (Chortoicetes terminifera) swarms across Australia.

The desert locust (Schistocerca gregaria) is probably the best known species owing to its wide distribution (North Africa, Middle East, and Indian subcontinent) and. The Australian plague locust hopper (left) showing the typically saddle-shaped body profile, compared to the Australian wingless grasshopper (right) body profile, which is more straight The best field identification of locusts at the hopper stage of development is the X-shaped marking on the back of their thorax.

Individuals may migrate large distances (hundreds of kilometres) in dense swarms at night. During the day, swarms of flying adults or bands of hoppers move and devour crops and pastures in their path.

The bands of hoppers develop from nymphs from dense egg beds. Swarms of Australian Plague Locusts occur more frequently than the Migratory Locust. In the Australian plague locust, Chortoicetes terminifera, stimulation of the antennae, but not the hindlegs, is sufficient to elicit a phase transition (Cullen et al., ).

Not only tactile. Introduction. The Australian plague locust, Chortoicetes terminifera (Walker), is a recurrent pest of agriculture in Australia. Typically short periods with few locusts are followed by frequent outbreaks (Wright, ; Hunter, ) when substantial numbers of locusts can cause significant crop damage (Wright, ).Locusts can breed both in the arid interior and in the agricultural zone to Cited by: The Australian plague locust, Chortoicetes terminifera (Walker) (Orthoptera: Acrididae), infests most of the interior of eastern Australia.

In this paper the population dynamics of C. terminifera and its behaviour in relation to control are outlined. The organization of survey and control, and the Cited by:   Characteristics, lifecycle, damage and control of the Australian plague locust.

Wardhaugh, K.G.: The development of eggs of the Australian plague locust, Chortoicetes terminifera (Walk.), in relation to temperature and moisture. In: Proceedings of the International Conference on the Current and Future Problems of Acridology. London, United Kingdom, 6–16 July Cited by: Economic.

Damages crops and pastures. A high-density swarm (more than 50 insects per m 2) of Australian plague locusts covering 2km 2 will contain around 1 billion insects, which can eat 20 tonnes of vegetation a day. Locusts at both nymph and adult stage can cause extensive crop and pasture damage.

Australian plague locust Chortoicetes terminifera on Overview There are many products with different trade names that contain the same active ingredient. Several species of grasshoppers swarm as locusts in different parts of the world, on all continents except Antarctica and North America: For example, the Australian plague locust (Chortoicetes terminifera) swarms across Australia.

Some of these are: (1) the extremely large area ( million sq. km) within which locusts can be found, (2) the remoteness and difficult access of such areas, (3) the insecurity or lack of safety (such as land mines) in some areas, (4) the limited resources for locust monitoring and control in some of the affected countries, (5) the.

In Chortoicetes terminifera, G-banding, produced by the trypsin treatment of air-dried slides followed by Giemsa staining, leads to light staining gaps at the secondary constrictions on autosomal pair 6 and regions proximal to the centromere on the long arms of pair 4.

The variable short arms of two of the three smallest pairs were usually flared and lightly stained after by: guttulosa), migratory locust (Locusta migratoria) and Australian plague locust (Chortoicetes terminifera).

These insects evoke considerable media and community interest due to the visible nature of the swarms and biblical tales of damage. The formation of dense. The Australian plague locust (APL) is the most economically important grasshopper in Australia. The immature hopper stage damages mainly pastures in farming areas, and gardens and lawns in domestic areas.

They tend to avoid established green crops, although the edges of crops can be damaged. Adult locusts can form swarms and fly into other areas, damaging pastures, ripening cereal, lupin and. The Australian plague locust, Chortoicetes terminifera, an acridid grasshopper, is an important migratory pest of agricultural crops and pasture in both eastern and western Australia.

1,2 Populations develop in inland pastures following rain and the adults undertake postfledging.Australian plague locust (Orthoptera), Chortoicetes terminifera, are cannibalistic (Elgar and Crespi, ) and they often consume injured or weak conspecific to compensate for the deficiency of an important nutrient - protein (Simpsons et al., ).This phenomenon is most observed during their migratory period.

Cannibalism of conspecifics in locusts drives the mass migratory movement.The Australian plague locust (Chortoicetes terminifera) is a damaging, recurrent insect pest of pastures and crops throughout Australia.

This pest occurs throughout most of the central and western parts of New South Wales with the greatest activity usually from spring to autumn. The following diagram is not to scale.

Australian plague locust nymphs.