Investigating the validity of the species status of the false codling moth in South African deciduous fruit orchards using mating studies and mtDNA

2016 ◽  
Vol 106 (5) ◽  
pp. 598-605 ◽  
Author(s):  
N. Mgocheki ◽  
P. Addison
Keyword(s):  
South Africa ◽  
Host Range ◽  
Host Species ◽  
Codling Moth ◽  
Western Cape ◽  
Management Options ◽  
Thaumatotibia Leucotreta ◽  
False Codling Moth ◽  
Fruit Orchards ◽  
Mating Tests

AbstractThe false codling moth is a polyphagous pest of various kinds or fruit, and it has expanded its geographical distribution and host range. The expanding host range could result in subspecies requiring varied pest management options. Laboratory no-choice cross-mating tests were conducted to establish whether Thaumatotibia leucotreta individuals from six areas and three host species, in South Africa, share mating characteristics and belong to the same subspecies or strain. The no-choice cross-mating tests indicated that all individuals in self- and out-crosses readily mated within 24 h with those derived from different hosts and areas. The mtDNA results confirmed that all individuals formed one group or clade. Overall, the results indicate that T. leucotreta individuals from the six areas and three host species in the Western Cape Province and two other provinces in South Africa represent a single genetical species. The results imply that similar control options can be effective across host ranges and distribution areas.

Nematodes and cestodes of rodents in South Africa: baseline data on diversity and geographic distribution

2019 ◽  
Vol 94 ◽  
Author(s):  
A. Spickett ◽  
K. Junker ◽  
G. Froeschke ◽  
V. Haukisalmi ◽  
S. Matthee
Keyword(s):  
South Africa ◽  
Host Range ◽  
Geographic Distribution ◽  
Host Species ◽  
Baseline Data ◽  
Helminth Species ◽  
Rodent Species ◽  
Helminth Parasites ◽  
Gastrointestinal Helminths ◽  
Naturally Occurring

Abstract Currently, descriptive information on the host range and geographic distribution of helminth parasites associated with naturally occurring rodents in South and southern Africa is scant. Therefore, we embarked on a countrywide study to: (1) identify gastrointestinal helminths and their host range, and (2) provide baseline data on the geographic distribution of helminths across the country. Altogether, 55 helminth taxa were recovered from at least 13 rodent species (n = 1030) at 26 localities across South Africa. The helminth taxa represented 25 genera (15 nematodes, nine cestodes and one acanthocephalan). Monoxenous nematodes were the most abundant and prevalent group, while the occurrence of heteroxenous nematodes and cestodes was generally lower. The study recorded several novel helminth–host associations. Single-host-species infections were common, although multiple-host-species infections by helminth species were also recorded. Monoxenous nematodes and some cestodes were recovered countrywide, whereas heteroxenous nematodes were restricted to the eastern regions of South Africa. The study highlights the as yet unexplored diversity of helminth species associated with naturally occurring rodent species and provides initial data on their geographical distribution in South Africa.

False codling moth Thaumatotibia leucotreta (Lepidoptera, Tortricidae) larvae are chill-susceptible

2011 ◽  
Vol 19 (3) ◽  
pp. 315-328 ◽  
Author(s):  
Leigh Boardman ◽  
Tim G. Grout ◽  
John S. Terblanche
Keyword(s):  
Codling Moth ◽  
Thaumatotibia Leucotreta ◽  
False Codling Moth
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