نتایج جستجو برای: ostertagia occidentalis

تعداد نتایج: 2418  

2015
Xian-Ming Yang Heng Lou Jing-Tao Sun Yi-Ming Zhu Xiao-Feng Xue Xiao-Yue Hong

Many species can successfully colonize new areas despite their propagules having low genetic variation. We assessed whether the decreased genetic diversity could result in temporal fluctuations of genetic parameters of the new populations of an invasive species, western flower thrips, Frankliniella occidentalis, using mitochondrial and microsatellite markers. This study was conducted in eight l...

Journal: :The Journal of general virology 2011
Diana Tentchev Eric Verdin Cécile Marchal Monique Jacquet Juan M Aguilar Benoît Moury

Tomato spotted wilt virus (TSWV; genus Tospovirus, family Bunyaviridae) genetic diversity was evaluated by sequencing parts of the three RNA genome segments of 224 isolates, mostly from pepper and tomato crops in southern Europe. Eighty-three per cent of the isolates showed consistent clustering into three clades, corresponding to their geographical origin, Spain, France or the USA, for the thr...

Journal: :Environmental entomology 2015
M Miller-Pierce D C Shaw A Demarco P T Oester

The larch casebearer [Coleophora laricella (Hubner)], a non-native insect, continues to impact western larch (Larix occidentalis Nutt.) through defoliation events in the Pacific Northwest. Biological control programs starting in the 1960s released seven species of parasitoid wasps to control C. laricella outbreaks. However, information about current population dynamics of C. laricella and assoc...

Journal: :Thrombosis and haemostasis 2008
Roberto J C Fonseca Stephan-Nicollas M C G Oliveira Fábio R Melo Maria G Pereira Norma M B Benevides Paulo A S Mourão

We compared sulfated galactans (SGs) from two species of red algae using specific coagulation assays and experimental models of thrombosis. These polysaccharides have an identical saccharide structure and the same size chain, but with slight differences in their sulfation patterns. As a consequence of these differences, the two SGs differ in their anticoagulant and venous antithrombotic activit...

Journal: :The Onderstepoort journal of veterinary research 1977
I G Horak

The seasonal incidence of helminth infestation on a farm in the Transvaal Highveld was determined by the slaughter of tracer lambs exposed on pasture for periods of approximately 6 weeks. Haemonchus contortus, the most prevalent nematode, was recovered in the greatest numbers from January--May 1974. Peak counts of Ostertagia circumcincta were made during March and April 1974 and in January 1975...

1999
ADRIANO CAVALLERI LAURENCE A. MOUND

This paper provides an illustrated key to about 40 species of Frankliniella recorded from Brazil, together with notes about each species. Two new synonyms are established: Frankliniella longispinosa Moulton is a synonym of Frankliniella varipes Moulton; Frankliniella rodeos Moulton is a synonym of Frankliniella gemina Bagnall, all described originally from South America. One new species is desc...

2009
Emeka E.J. Iweala

Correspondence to: Emeka E.J. Iweala, Department of Biological Sciences, Biochemistry and Molecular Biology Unit, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria. Email: [email protected] Full Paper Preliminary qualitative screening for cancer chemopreventive agents in Telfairia occidentalis Hook.f., Gnetum africanum Welw., Gongronema latifolium Benth. and Ocimum gratissimum...

2015
David Zelagin

Disease poses a threat to any society, and this threat is amplified for societies persisting in cramped quarters over extended periods of time. Highly social (eusocial) insects actively combat the danger of pathogen proliferation with a myriad of tactics, one of which is necrophoresis or the removal of corpses from the nest. This study examines the spatial patterns of the corpse depositions of ...

Journal: :Zootaxa 2014
Elena Cargnus Pietro Zandigiacomo

The immature stages of four species of Kampimodromus Nesbitt (Acari: Phytoseiidae) from Italy and Croatia have been studied and identified both at stage and species level. Larval stages of Kampimodromus corylosus Kolodochka and all immature stages of Kampimodromus ericinus Ragusa di Chiara & Tsolakis and Kampimodromus langei Wainstein & Arutunjan are described for the first time. The relative l...

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