Low volume concentrate spraying for the control of the field cricket (Teleogryllus commodus)

1967 ◽  
Vol 7 (28) ◽  
pp. 472
Author(s):  
PR Birks
Keyword(s):  
New Zealand ◽  
Field Cricket ◽  
Effective Control ◽  
Alternative Treatments ◽  
Insecticide Residues ◽  
South Eastern ◽  
Teleogryllus Commodus ◽  
Important Pest ◽  
Low Volume

The field cricket, Teleogryllus commodus (Walker) is an important pest of black cracking soils of south-eastern mainland Australia and of New Zealand. Insecticidal control was unsatisfactory until dieldrin was introduced. Residue problems associated with the use of dieldrin on pastures led to a revival of investigations into alternative treatments. The low volume concentrate application of technical malathion by aircraft gave rapid and effective control when applied late in the season. As little as 6.5 fl oz of 96 per cent malathion, estimated to cost no more than $1.20 an acre, including application costs, reduced cricket populations by 94-95 per cent two to six days after spraying, providing quick, convenient, and economical control and avoiding undesirable insecticide residues. Further trials will be necessary to determine suitable applications earlier in the season.

scholarly journals NO EVIDENCE FOR INBREEDING AVOIDANCE THROUGH POSTCOPULATORY MECHANISMS IN THE BLACK FIELD CRICKET, TELEOGRYLLUS COMMODUS

Evolution ◽  
2004 ◽  
Vol 58 (11) ◽  
pp. 2472-2477 ◽  
Author(s):  
Michael D. Jennions ◽  
John Hunt ◽  
Russell Graham ◽  
Robert Brooks
Keyword(s):  
Inbreeding Avoidance ◽  
Field Cricket ◽  
Teleogryllus Commodus ◽  
Black Field

The New Zealand lichen Pannaria leproloma (Nyl.) P. M. Jørg. and its panaustral relative P. farinosa nom. nov.

2007 ◽  
Vol 39 (4) ◽  
pp. 349-359 ◽  
Author(s):  
Arve ELVEBAKK ◽  
Janne FRITT-RASMUSSEN ◽  
John A. ELIX
Keyword(s):  
New Zealand ◽  
South America ◽  
High Frequency ◽  
Southern South America ◽  
South Eastern

Abstract:Pannaria leproloma is shown to be a New Zealand endemic, and is characterized by coarse isidiomorphs/isidia, a high frequency of apothecia and the presence of two cytotoxic scabrosin esters, previously unknown from Pannariaceae, and present in 40 of the samples studied. It is not a member of the Pannaria sphinctrina group, as previously thought. It has frequently been confused with a related, finely sorediate, very sparingly fertile species, which lacks scabrosin esters in more than 99 of the specimens studied. This latter species is widely distributed both in southern South America (where it is one of the most common corticolous lichens), south-eastern areas of Australia and in New Zealand. It was originally described as Psoroma isidiosum, but had to be renamed when transferred to Pannaria, and is here named Pannaria farinosa.

The role of the foregut in digestion in the cricket Teleogryllus commodus and the locust Chortoicetes terminifera

2020 ◽  
Vol 68 (4) ◽  
pp. 212 ◽  
Author(s):  
ShangXian Zhou ◽  
James D. Woodman ◽  
Hua Chen ◽  
Paul D. Cooper
Keyword(s):  
Field Cricket ◽  
Passage Rate ◽  
Exterior Surface ◽  
Teleogryllus Commodus ◽  
Black Field ◽  
Food Particles ◽  
Generalist Diet ◽  
Cuticular Structures ◽  
Australian Plague Locust

The role of the foregut (crop and proventriculus) in mechanical processing of food has received little attention in insects. Using the Australian plague locust (Chortoicetes terminifera) and the black field cricket (Teleogryllus commodus) as models, the role of the crop in processing of wheat or rye grass was examined. Interior cuticular structures (spines) of the foregut were described using light and scanning electron microscopy, with locusts having sclerotised structures and crops of crickets being unsclerotised internally. Muscular bands on the exterior surface of the crop part of the foregut are similar in males of both species, but contractions and movements are more forceful in locusts. Passage rate from the foregut is much faster in locusts (<3 h) than in crickets (>3 h). Water within the crop is reduced compared with the water content of fresh grass within the foregut of locusts, but water is increased in cricket crops. Spines within the crops are small relative to the size of food particles in both species. Some spines of locusts contain metals. The slower passage rate from the crop of crickets may be limited by the proventriculus. Foregut structure and food processing facilitates the generalist diet of crickets, but may restrict locusts to consuming softer grasses.

scholarly journals A volatile compound 2undecanone increases walking but not flying tomato potato psyllid movement toward an odour source

2014 ◽  
Vol 67 ◽  
pp. 184-190 ◽  
Author(s):  
M.M. Davidson ◽  
R.C. Butler ◽  
N.M. Taylor ◽  
M-C. Nielsen ◽  
C.E. Sansom ◽  
...  
Keyword(s):  
New Zealand ◽  
North America ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Volatile Compound ◽  
Management Strategy ◽  
Potato Psyllid ◽  
Bactericera Cockerelli ◽  
Odour Source ◽  
Important Pest

Bactericera cockerelli (tomato potato psyllid; TPP) is an important pest of solanaceous crops in New Zealand and North America A volatile compound that alters the behaviour of TPP could be developed into a component of an integrated pest management strategy for solanaceous crops One compound 2undecanone was found to increase the percentages of female and male TPP (65 P

Uraba lugens (eucalypt leaf skeletonizer).

2021 ◽  
Author(s):  
Lisa Berndt
Keyword(s):  
New Zealand ◽  
Western Australia ◽  
Timber Production ◽  
Native Range ◽  
Natural Forests ◽  
Eastern Australia ◽  
Important Pest ◽  
Eucalypt Forests

Abstract U. lugens was first considered a serious pest of natural eucalypt forests in Western Australia in 1983 when the first severe outbreak occurred there (Strelein, 1988). Prior to that it was widely known as a pest of eucalypt forests in eastern Australia (Campbell, 1962; Harris, 1974). As these natural forests are or were managed for timber production, it is considered an economically important pest in its native range. Damage to amenity trees is also a common problem, although few trees are killed by this defoliation (Anonymous, 1979).U. lugens was recorded as invasive in New Zealand by Crabtree (1997). In its exotic range it has become a significant pest of amenity trees, particularly Lophestemon confertus (Australian brush box), which is commonly planted in some parts of Auckland City (Kriticos et al., 2007).

A revision of Australian species of Radula subg. Odontoradula

2013 ◽  
Vol 26 (6) ◽  
pp. 408 ◽  
Author(s):  
Matt A. M. Renner ◽  
Nicolas Devos ◽  
Elizabeth A. Brown ◽  
Matt J. von Konrat
Keyword(s):  
New Zealand ◽  
Morphological Characters ◽  
Molecular Data ◽  
Morphological Data ◽  
South Eastern ◽  
Chloroplast Markers ◽  
Molecular Divergence ◽  
Wet Tropics ◽  
Australian Flora ◽  
Morphological Differences

The current paper presents molecular data from three chloroplast markers (atpB–rbcL spacer, trnG G2 intron, trnL–trnF intron and spacer); morphological data, and geographic data to support the recognition of nine species belonging to Radula subg. Odontoradula in Australasia. R. ocellata, the subgeneric type from the Wet Tropics bioregion, is maintained as distinct from its sister species, R. pulchella, from south-eastern Australian rainforests; both species are Australian endemics. Reinstatement of R. allisonii from synonymy, under R. retroflexa, is supported by molecular data and morphological characters, including the absence of triradiate trigones on leaf-lobe cell walls, the apex of lobules on primary shoots not being turned outwards, the oblong-elliptic female bracts, and the perianths having a pronounced wing. Reinstatement of R. weymouthiana, from synonymy under R. retroflexa, is also supported by molecular data and morphological characters, including the presence of a single low dome-shaped papilla over each leaf-lobe cell, and the large imbricate lobules on primary shoots. R. weymouthiana occurs in Tasmania and New Zealand, whereas R. allisonii is a New Zealand endemic. Australian R. retroflexa exhibits differentiation into epiphytic and rheophytic morphs, interpreted as ecotypes. Australian individuals, comprising both epiphytic and rheophytic morphs, are monophyletic and nested within a clade containing individuals from other regions. R. novae-hollandiae is newly reported for the New Zealand Botanical Region, from Raoul Island in the Kermadecs. R. novae-hollandiae exhibits decoupling of morphological and molecular divergence, with Australian individuals forming two clades reflecting geography (a Wet Tropics bioregion clade and a south-eastern Rainforest clade). These clades exhibit equivalent levels of molecular divergence, as observed in R. pulchella and R. ocellata, but no morphological differences. Similar levels of molecular divergence were observed in trans-Tasman populations of R. tasmanica. The New Zealand endemic, R. plicata, is excluded from the Australian flora, and R. cuspidata replaces R. dentifolia for the New Zealand endemic species formerly known by both names.

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