Effects of temperature and diet on oviposition rate and development time of the New Zealand flower thrips, Thrips obscuratus

1991 ◽  
Vol 60 (2) ◽  
pp. 143-155 ◽  
Author(s):  
D. A. J. Teulon ◽  
D. R. Penman
Keyword(s):  
New Zealand ◽  
Development Time ◽  
Oviposition Rate ◽  
Flower Thrips ◽  
Effects Of Temperature ◽  
Thrips Obscuratus

scholarly journals Phenology of New Zealand flower thrips (Thrips obscuratus) in vineyards

2004 ◽  
Vol 57 ◽  
pp. 338-338
Author(s):  
K. Schmidt ◽  
D.A.J. Teulon ◽  
M-C. Nielsen ◽  
S.D. Wratten ◽  
M.V. Jaspers
Keyword(s):  
New Zealand ◽  
Flower Thrips ◽  
Thrips Obscuratus

Attraction of New Zealand Flower Thrips, Thrips obscuratus, to cis-Jasmone, a Volatile Identified from Japanese Honeysuckle Flowers

2009 ◽  
Vol 35 (6) ◽  
pp. 656-663 ◽  
Author(s):  
A. M. El-Sayed ◽  
V. J. Mitchell ◽  
G. F. McLaren ◽  
L. M. Manning ◽  
B. Bunn ◽  
...  
Keyword(s):  
New Zealand ◽  
Flower Thrips ◽  
Japanese Honeysuckle ◽  
Thrips Obscuratus

scholarly journals New Zealand flower thrips and their impact on nectarine fruit diseases

2003 ◽  
Vol 56 ◽  
pp. 157-163
Author(s):  
G.F. McLaren ◽  
J.A. Fraser ◽  
P.A. Alspach
Keyword(s):  
New Zealand ◽  
Pseudomonas Syringae ◽  
Brown Rot ◽  
Bacterial Disease ◽  
Disease Symptoms ◽  
Bacterial Diseases ◽  
Flower Thrips ◽  
Beginning Of Flowering ◽  
Thrips Obscuratus ◽  
The Impact

Insecticides fungicides and a bactericide were applied in spring 2001 and 2002 to nectarine trees to determine the impact of thrips (mainly New Zealand flower thrips Thrips obscuratus) on summerfruit pathogens Thrips numbers were assessed over 7 weeks from the beginning of flowering The insecticide programme increased the proportion of fruit meeting export standards for thrips damage but did not influence the level of either brown rot caused by Monilinia fructicola or the bacterial diseases bacterial blast (Pseudomonas syringae) and bacterial spot (Xanthomonas arboricola pv pruni) The fungicide programme reduced the level of brown rot Cumulative thrips counts were positively correlated with levels of brown rot infection on the fruit at harvest time in 2001/02 (P002) and 2002/03 (P009) and bacterial disease symptoms in 2001/ 02 (P003) It was concluded that New Zealand flower thrips could increase levels of disease in nectarines but the value of treating with insecticides was not clear

scholarly journals Postharvest management of New Zealand flower thrips on export apricots using ethyl formate

2014 ◽  
Vol 67 ◽  
pp. 103-108
Author(s):  
S.P. Redpath ◽  
A. Wilson ◽  
L.E. Jamieson ◽  
N.E.M. Page-Weir ◽  
M.J. Griffin ◽  
...  
Keyword(s):  
New Zealand ◽  
Adverse Effects ◽  
Fruit Quality ◽  
Larval Mortality ◽  
Ethyl Formate ◽  
Export Markets ◽  
Flower Thrips ◽  
Shipping Containers ◽  
Postharvest Management ◽  
Thrips Obscuratus

New Zealand flower thrips (NZFT Thrips obscuratus) is the most abundant pest on New Zealand apricots at harvest and is a quarantine pest for apricot export markets Ethyl formate (EF) is a Generally Recognised As Safe (GRAS) compound being investigated treatments against NZFT and their impact on apricot fruit quality in shipping containers NZFT adults and larvae on apricots were treated in field bins of apricots in a 282 m3 in Hawkes Bay and Central Otago respectively In Hawkes Bay the treatments resulted in 100 mortality of NZFT adults and larvae In Central Otago the treatments resulted in 100 mortality of NZFT adults and 98100 larval mortality Export grade apricot cultivars expressed no adverse effects on quality to this concentration of EFCO2

scholarly journals Alternative strategies to control New Zealand flower thrips on nectarines

2001 ◽  
Vol 54 ◽  
pp. 10-14 ◽  
Author(s):  
G.F. McLaren ◽  
J.A. Fraser
Keyword(s):  
New Zealand ◽  
Fruit Production ◽  
Control Measures ◽  
Harvest Time ◽  
Alternative Strategies ◽  
Flower Thrips ◽  
Organic Systems ◽  
Thrips Obscuratus ◽  
Integrated Fruit Production

Experiments conducted in both spring and preharvest (summer) aimed to prevent damage to nectarines caused by New Zealand flower thrips Thrips obscuratus and to minimise quarantine problems caused by thrips on export fruit Reflective mulch and three insecticide programmes were compared with the standard taufluvalinate/chlorpyrifos programme in spring Abamectin spinosad and Pyrethrum Plus reduced spring damage but none was more effective than the existing standard At harvest time carbaryl and spinosad plus Nufilm17 reduced thrips numbers 3 days after treatment but carbaryl was the only effective insecticide after 5 days Reflective mulch reduced thrips numbers in spring and preharvest providing a nonchemical alternative for thrips control However supplementary control measures would be needed for this treatment to meet quarantine standards at harvest time Alternative spring and preharvest programmes for both Integrated Fruit Production and organic systems are suggested for nectarines but registration is necessary before some insecticides can be used on summerfruit

scholarly journals Development of thresholds for insecticidal control of New Zealand flower thrips on nectarines in spring

2000 ◽  
Vol 53 ◽  
pp. 194-199 ◽  
Author(s):  
G.F. McLaren ◽  
J.A. Fraser
Keyword(s):  
New Zealand ◽  
Fruit Set ◽  
Fruit Production ◽  
Sensitive Period ◽  
Severe Damage ◽  
Flower Thrips ◽  
Adult Feeding ◽  
Production Programme ◽  
Thrips Obscuratus ◽  
Integrated Fruit Production

Numbers of adult and larval New Zealand flower thrips Thrips obscuratus were recorded daily on nectarines from flowering (early September) to shuck fall (early November) over 5 years Adults were more common than larvae and occurred throughout this period increasing to their highest numbers in late October Larvae occurred for three weeks from petal fall Adults were released weekly onto bagged nectarine flowers or fruitlets from flowering to shuck fall Damage to the fruit was assessed in November Adults caused the most severe damage when released during flowering; slightly less damage was caused after petal fall and minor damage occurred in the weeks before shuck fall Adult feeding did not affect fruit set Three thresholds based on adult numbers are proposed for determining the need for insecticidal control in an Integrated Fruit Production programme for nectarines These thresholds reflect the decreasing risk of damage through the sensitive period

scholarly journals The incidence of New Zealand flower thrips in stonefruit orchards between flowering and harvest

2006 ◽  
Vol 59 ◽  
pp. 63-68 ◽  
Author(s):  
G.F. McLaren ◽  
P.A. Alspach
Keyword(s):  
New Zealand ◽  
Sticky Traps ◽  
Flower Thrips ◽  
Thrips Obscuratus ◽  
Peach Orchard

New Zealand flower thrips Thrips obscuratus (Crawford) (NZFT) feeds on the nectar and pollen of stonefruit flowers and was thought to then disappear from orchards for 23 months until the fruit ripen Aerial populations of NZFT were sampled in Central Otago orchards using white sticky traps Samples were taken in a peach orchard for 6 months from flowering until after harvest and in two cherry orchards for six weeks during harvest In all three orchards populations of NZFT reached high numbers in December In the peach block NZFT numbers peaked in December several weeks before the fruit began to ripen It was concluded that NZFT can live in stonefruit orchards probably feeding on newly emerged leaves of peaches or cherries or in the vegetation of the irrigated orchard floor Trapped thrips could also have come from other blocks within the larger orchard areas or from outside sources

scholarly journals Seasonal variation in the lower thermotolerance of adult New Zealand flower thrips Thrips obscuratus (Crawford)

2010 ◽  
Vol 63 ◽  
pp. 187-194
Author(s):  
G.F. McLaren ◽  
K.M. Colhoun ◽  
R.C Butler
Keyword(s):  
Seasonal Variation ◽  
New Zealand ◽  
Plant Material ◽  
Peach Fruit ◽  
Cold Temperatures ◽  
Natural Sources ◽  
Flower Thrips ◽  
Time Of Year ◽  
Thrips Obscuratus

The ability of New Zealand flower thrips (NZFT) to tolerate cold temperatures was investigated Thrips were collected from a range of natural sources in Central Otago over 2 years Some adult NZFT (predominantly females) survived for up to 2 months on peach fruit at 01C; LT 50 354 days and LT 99 707 days Plant material containing NZFT was exposed for 24 h to 10 75 5 25 and 0C and NZFT mortality measured Irrespective of the time of year when NZFT were collected mortality was similar after 24 h at 25C to that at 0C (means 46 47) but increased with decreasing temperature (mean mortality 225 at 5C 663 at 75C and 820 at 10C) From 75C downwards responses to changes in temperature varied between seasons (P

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