Nematologica最新文献_第3页

Proposal of New Synonyms in Hemicycliophora De Man, 1921 (Nematoda: Tylenchida) 半圆线虫属(cycycliophora De Man, 1921)新同义词的提出(线虫纲:蛛形目)

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005325998X00027

E. Costa-Manso

引用次数: 2

Bursaphelenchus hellenicus sp. n. (Nematoda, Aphelenchoididae) from Greek pine wood.

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005725998X00032

G. Skarmoutsos, H. Braasch, H. Michalopoulou

引用次数: 24

Effects of crop rotations of cereals with vetch and fallow on soil nematofauna in Central Spain 西班牙中部谷地与野豌豆和休耕轮作对土壤线虫的影响

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005225998X00073

G. Nombela, A. Navas, A. Bello

引用次数: 16

Control of the root-knot nematode Meloidogyne javanica by the parasite Pasteuria penetrans as influenced by the initial nematode population densities. 穿透性巴氏菌对javanmeloidogyne根结线虫的控制受初始线虫种群密度的影响。

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005525998X00043

A. Channer, S. Gowen, E. Tzortzakakis

{"title":"Control of the root-knot nematode Meloidogyne javanica by the parasite Pasteuria penetrans as influenced by the initial nematode population densities.","authors":"A. Channer, S. Gowen, E. Tzortzakakis","doi":"10.1163/005525998X00043","DOIUrl":"https://doi.org/10.1163/005525998X00043","url":null,"abstract":"The potential of Pasteuria penetrans for the biological control of Meloidogyne javanica on tomato plants was examined in a pot experiment. P. penetrans in dried powdered roots was applied at 11000 and 55 000 spores/cm 3 soil in pots inoculated with 420 or 4200 second stage juveniles. At 4 months after planting there was significantly less galling on plants grown in pots inoculated with 420 nematodes and 55 000 spores/cm 3 than in the unamended control pots. There was a 96% decrease in numbers of egg masses on these roots. The period of assessment had to be shortened because the control plants in the treatment with the higher nematode inoculum died prematurely curtailing further reproduction. Treatment with P. penetrans prevented premature senescence of the plants allowing nematode reproduction to continue. A significant interaction between P. penetrans density and nematode density was obtained on the number of juveniles in soil after the first crop. Where the nematode population was initially large (4200/pot), there were more juveniles in the treatments to which P. penetrans had been applied than in the untreated controls. However, where the nematode population was initially small (420/pot), there were more juveniles in the untreated control than in the treatment with the higher dose of P. penetrans. A second crop was grown in soil from the different treatments after either removing or incorporating the dried roots of the preceding crop. After 30 days, root galling and egg production were higher in pots initially inoculated with 420 nematodes. The effect of root incorporation on egg production was influenced by both nematode and P. penetrans level; greater numbers of eggs were produced on treatments with the initially higher levels. It is concluded that P. penetrans, deployed as a single control measure, may not give consistent or durable control, but that it may have a role in an integrated approach to nematode management.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"32 1","pages":"369-379"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87551369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Proceedings of the 24th International Nematology Symposium 第24届国际线虫学研讨会论文集

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/187529298X00015

R. Cook, M. Phillips

引用次数: 0

Infectivity and Specificity of Canadian and Czech Isolates of Steinernema Kraussei (Steiner, 1923) To Some Insect Pests At Low Temperatures in the Laboratory 加拿大和捷克克劳斯斯坦内菌分离株(Steiner, 1923)在实验室低温下对某些害虫的传染性和特异性

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005525998X00098

J. M. Webster, P. Kindlmann, S. Bečár, Z. Acek

{"title":"Infectivity and Specificity of Canadian and Czech Isolates of Steinernema Kraussei (Steiner, 1923) To Some Insect Pests At Low Temperatures in the Laboratory","authors":"J. M. Webster, P. Kindlmann, S. Bečár, Z. Acek","doi":"10.1163/005525998X00098","DOIUrl":"https://doi.org/10.1163/005525998X00098","url":null,"abstract":"The infectivity of steinernematid nematodes varies with temperature. Five insect species, namely codling moth, Cydia pomonella; mealworm, Tenebrio molitor; blow fly, Sarcophaga bullata; March fly, Bibio marci; and web spinning sawfly, Cephaleia abietis were exposed to a Canadian (# 76) isolate of Steinernema kraussei at 7°C. C. abietis was exposed to the Canadian isolate # D and Czech isolate Vimperk at 4°C. These experiments were done in Petri dishes filled with moist sand, exposure time was 250 h and inoculum ranged from 50 to 800 infective juveniles (IJs). The highest larval mortality occurred in lepidopteran and coleopteran species, C. pomonella (73-100%) and T. molitor (28-70%), respectively. Few dipteran larvae, S. bullata and B. marci, were killed. The mortality of C. abietis larvae ranged from 2% (isolate # 76, at 50 IJs/dish) to 30% (isolate Vimperk, at 400 IJs/dish) at 7°C, but was negligible at 4°C. The intensity of infection expressed as the number of adult nematodes recovered from the insect cadavers, was greatest in C. pomonella where it ranged from 16 to 25% of the initial IJ inoculum, but was almost zero for both fly larval species. When analysed and fitted to the modified Anderson host-parasite model, the data confirmed a significant level of Steinernema parasitism for C. abietis, T. molitor, and C. pomonella larvae at low temperatures, and showed that the two species of fly larvae tested were almost fully resistant to parasitism by S. kraussei. Natural adaptation of the Czech Vimperk isolate to C. abietis may have enhanced this isolate's infectivity when compared with that of the Canadian nematode isolates.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"6 1 1","pages":"437-448"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80622668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Biocontrol of Heterodera Schachtii Using Combinations of the Sterile Fungus, Stfch1-1, Embellisia Chlamydospora and Verticilli Um Chlamydospori Um

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005525998X00025

A. Jalali, R. Segers, J. Coosemans

{"title":"Biocontrol of Heterodera Schachtii Using Combinations of the Sterile Fungus, Stfch1-1, Embellisia Chlamydospora and Verticilli Um Chlamydospori Um","authors":"A. Jalali, R. Segers, J. Coosemans","doi":"10.1163/005525998X00025","DOIUrl":"https://doi.org/10.1163/005525998X00025","url":null,"abstract":"A sterile fungus, designated as StFCh1-1, and two other fungi, Embellisia chlamydospora and Verticillium chlamydosporium, isolated from cysts of the sugar beet cyst nematode, Heterodera schachtii, were tested as biological control agents against this nematode. The combination of StFCh1-1 with either E. chlamydospora or V. chlamydosporium resulted in significantly greater impact on the nematode population than any fungus alone. More females and cysts were colonised by StFCh1-1 than by either other antagonist. These nematodes showed the typical fungal sclerotium on the outside of the body wall, and the hyphal imprint on the inside of the cyst. Few females developed on sugar beet roots in the soil of those treatments that included the sterile fungus. No juveniles emerged from cysts colonised by the sterile fungus, while some juveniles hatched from eggs within cysts colonised by either E. chlamydospora or V. chlamydosporium. The density of E. chlamydospora and V. chlamydosporium in soil, as measured by colony forming unit counts, decreased over time. Quantification of the sterile fungus in soil was not possible using this technique due to rampant growth of saprophytic fungi on the isolation medium. The results suggest that, despite the promising nature of the sterile fungus StFCh1-1 in comparison with the two other fungi used, a carefully combined inoculum could still be more effective at controlling H. schachtii. The results are discussed in the context of compatibility of these organisms.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"50 1","pages":"345-355"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78901493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Comparison of the Biology and Freezing Tolerance of Panagrolaimus Davidi, an Antarctic Nematode, From Field Samples and Cultures 从野外样品和培养物比较南极线虫的生物学和抗冻性

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005725998X00050

D. Wharton

引用次数: 14

Loofilaimus, a Remarkable New Genus of Dorylaimida From Iran 伊朗多叶蝇属的一个新属

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005225998X00028

D. Sturhan, M. S. Jairajpuri, W. Ahmad

引用次数: 3

The viability of Meloidogyne incognita eggs released from egg masses of different ages using different concentrations of sodium hypochlorite 不同浓度的次氯酸钠对不同年龄的卵群释放出的隐绒圆母卵的存活率的影响

Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005325998X00081

M. Ehwaeti, M. Phillips, D. Trudgill

引用次数: 8