Rivista e Edizione

Volume 59 (2022): Edizione 2 (June 2022)

Volume 59 (2022): Edizione 1 (March 2022)

Volume 58 (2021): Edizione 4 (December 2021)

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Volume 58 (2021): Edizione 2 (June 2021)

Volume 58 (2021): Edizione 1 (March 2021)

Volume 57 (2020): Edizione 4 (December 2020)

Volume 57 (2020): Edizione 3 (September 2020)

Volume 57 (2020): Edizione 2 (June 2020)

Volume 57 (2020): Edizione 1 (March 2020)

Volume 56 (2019): Edizione 4 (December 2019)

Volume 56 (2019): Edizione 3 (September 2019)

Volume 56 (2019): Edizione 2 (June 2019)

Volume 56 (2019): Edizione 1 (March 2019)

Volume 55 (2018): Edizione 4 (December 2018)

Volume 55 (2018): Edizione 3 (September 2018)

Volume 55 (2018): Edizione 2 (June 2018)

Volume 55 (2018): Edizione 1 (March 2018)

Volume 54 (2017): Edizione 4 (December 2017)
Special Edizione: This issue is dedicated to the memory of Milan Ryboš, DVM, D.Sc.

Volume 54 (2017): Edizione 3 (September 2017)

Volume 54 (2017): Edizione 2 (June 2017)

Volume 54 (2017): Edizione 1 (March 2017)

Volume 53 (2016): Edizione 4 (December 2016)

Volume 53 (2016): Edizione 3 (September 2016)

Volume 53 (2016): Edizione 2 (June 2016)

Volume 53 (2016): Edizione 1 (March 2016)

Volume 52 (2015): Edizione 4 (December 2015)

Volume 52 (2015): Edizione 3 (September 2015)

Volume 52 (2015): Edizione 2 (June 2015)

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Volume 51 (2014): Edizione 4 (December 2014)

Volume 51 (2014): Edizione 3 (September 2014)

Volume 51 (2014): Edizione 2 (June 2014)

Volume 51 (2014): Edizione 1 (March 2014)

Volume 50 (2013): Edizione 4 (December 2013)

Volume 50 (2013): Edizione 3 (September 2013)

Volume 50 (2013): Edizione 2 (June 2013)

Volume 50 (2013): Edizione 1 (May 2013)

Volume 49 (2012): Edizione 4 (December 2012)

Volume 49 (2012): Edizione 3 (September 2012)

Volume 49 (2012): Edizione 2 (June 2012)

Volume 49 (2012): Edizione 1 (March 2012)

Volume 48 (2011): Edizione 4 (December 2011)

Volume 48 (2011): Edizione 3 (September 2011)

Volume 48 (2011): Edizione 2 (June 2011)

Volume 48 (2011): Edizione 1 (March 2011)

Volume 47 (2010): Edizione 4 (December 2010)

Volume 47 (2010): Edizione 3 (September 2010)

Volume 47 (2010): Edizione 2 (June 2010)

Volume 47 (2010): Edizione 1 (March 2010)

Volume 46 (2009): Edizione 4 (December 2009)

Volume 46 (2009): Edizione 3 (September 2009)

Volume 46 (2009): Edizione 2 (June 2009)

Volume 46 (2009): Edizione 1 (March 2009)

Volume 45 (2008): Edizione 4 (December 2008)

Volume 45 (2008): Edizione 3 (September 2008)

Volume 45 (2008): Edizione 2 (June 2008)

Volume 45 (2008): Edizione 1 (March 2008)

Volume 44 (2007): Edizione 4 (December 2007)

Volume 44 (2007): Edizione 3 (September 2007)

Volume 44 (2007): Edizione 2 (June 2007)

Volume 44 (2007): Edizione 1 (March 2007)

Volume 43 (2006): Edizione 4 (December 2006)

Volume 43 (2006): Edizione 3 (June 2006)

Volume 43 (2006): Edizione 2 (June 2006)

Volume 43 (2006): Edizione 1 (March 2006)

Dettagli della rivista
Formato
Rivista
eISSN
1336-9083
ISSN
0440-6605
Pubblicato per la prima volta
22 Apr 2006
Periodo di pubblicazione
4 volte all'anno
Lingue
Inglese

Cerca

Volume 44 (2007): Edizione 2 (June 2007)

Dettagli della rivista
Formato
Rivista
eISSN
1336-9083
ISSN
0440-6605
Pubblicato per la prima volta
22 Apr 2006
Periodo di pubblicazione
4 volte all'anno
Lingue
Inglese

Cerca

12 Articoli
Accesso libero

Morphometrical and molecular characterization of Bursaphelenchus species from Slovenia

Pubblicato online: 01 Jun 2007
Pagine: 37 - 42

Astratto

Abstract

The environmental conditions in Slovenia are relatively favourrable for the colonisation and spread of the pine wood nematode Bursaphelenchus xylophilus, a very dangerous pathogenic species which was recently identified in Europe in Portugal. To determine the presence of B. xylophilus in Slovenia and to introduce proper measures against its emergence and spread, a survey of Bursaphelenchus species was conducted in Slovenia from 2002 to 2005. Approximately 120 ha of conifer forests in Slovenia were surveyed for the presence of Bursaphelenchus species. In total, 206 wood samples were taken from the conifer forests. B. hofmanni, B. mucronatus were found for the first time in Slovenia, while B. xylophilus was not detected. Additionally, the species Aphelenchoides stammeri which is morphologically very similar to Bursaphelencus was found. All species have been described morphologically and characterized by ITS-RFLP analysis. Sequences of ribosomal DNA for B. hofmanni, B. mucronatus were analysed.

Parole chiave

  • Bursaphelenchus, Aphelenchoides
  • nematodes
  • plant parasitic
  • pine wood nematode
  • Slovenia
  • dissemination
  • identification
  • morphological characteristics
  • DNA characteristics
  • intraspecific type
  • internal transcribed spacer
  • ITS
  • restriction fragment length polymorphism
  • RFLP
Accesso libero

Sequences of the second internal transcribed spacer of ribosomal DNA for three species of Trichostrongylus (Nematoda: Trichostrongylidae) from sheep in Russia

Pubblicato online: 01 Jun 2007
Pagine: 43 - 46

Astratto

Abstract

For the first time, DNA sequence data were obtained for three species of Trichostrongylus from Russia. Internal transcribed spacer (ITS-2) of ribosomal DNA was sequenced for T. axei, T. colubriformis and T. probolurus from sheep from the Moscow region. ITS-2 rDNA length was estimated as 238 nucleotides for T. colubriformis and T. probolurus and 237 nucleotides for T. axei. The G+C content of the ITS-2 sequences of T. colubriformis, T. axei and T. probolurus were 31 %, 32 % and 34 % respectively. The level of interspecific differences in ITS-2 of rDNA of T. axei, T. probolurus and T. colubriformis ranged from 3 to 4 %. The ITS-2 sequences from the Russian specimens were compared with those of T. axei, T. probolurus and T. colubriformis from Australia and Germany. Intraspecific variation ranged from 0 % in T. colubriformis to 3.0 % in T. axei.

Parole chiave

  • Trichostrongylus spp.
  • ITS-2
  • interspecific differences
  • intraspecific variation
  • sheep
  • Russia
Accesso libero

Immune response of mice to Echinococcus multilocularis infection after therapy with amphotericin B colloidal dispersion

Pubblicato online: 01 Jun 2007
Pagine: 47 - 56

Astratto

Abstract

The effect of amphotericin B colloidal dispersion (ABCD) on selected immunological parameters and growth of the larval cysts in mice infected intraperitoneally with Echinococcus multilocularis protoscoleces was observed. ABCD was administered at a dose 10 mg/kg body weight twice a week from week 5 to 10 post infection (p.i.). The Echinococcus infection suppressed the proliferative response of splenic T lymphocytes to nonspecific mitogen concanavalin A throughout almost the whole course of the experiment and ABCD administration did not affect this inhibittion. The increase in the proliferative response of B lymphocytes to lipopolysaccharide was found in infected mice with ABCD treatment from week 6 to 10 p.i. ABCD induced a significant rise of the splenic CD4 T cell subpopulation in infected mice only on week 6 p.i. The CD8 T subpopulation was not influenced by the therapy. The level of serum Th1 cytokine IFN-γ in infected and ABCD treated mice was elevated only at week 8 p.i., while the level of serum Th2 cytokine IL-5 was not influenced by the therapy. The ABCD treatment inhibited the IFN-γ production by splenocytes in vitro from week 6 to 10 p.i. On the contrary, the IL-5 production in vitro was stimulated at weeks 8 and 12 p.i. None antiparasitic effect of ABCD on larval growth was determined.

Results suggest that amphotericin B colloidal dispersion did not affect the inhibited Th1 immune response after parasite infection. On the contrary, ABCD advanced the Th2 immune response development, which allows the progressive growth of the parasite.

Parole chiave

  • Echinococcus multilocularis
  • amphotericin B
  • mice
  • T and B lymphocytes
  • IL-5
  • IFN-γ
  • superoxide anion
Accesso libero

Genotoxic effects of albendazole in patients medicated for cystic echinococcosis

Pubblicato online: 01 Jun 2007
Pagine: 57 - 61

Astratto

Abstract

Cystic echinococcosis (CE) due to Echinococcus granulosus is one of the most important helminthic diseases in Turkey where it constitutes a public health and economic problems. Its mean annual incidence in humans is 4.4/100 000 and the prevalence of the tapeworm agent in domestic animals ranges from 11.2 to 50.7 %. Since 1980s, albendazole has been used for treatment of the disease, and this benzimidazole drug has been considered to be of relatively low toxicity. However, prolonged albendazole therapy of CE became to be a common practice, and data on possible genotoxic effects of the medication in humans are lacking. This study has concerned 17 women and 11 men, in total 28 patients with liver cystic hydatid complaints, who were administered albendazole (15 mg/kg) preoperatively (2 weeks) and postoperatively (6 months). Genotoxic effects of albendazole were searched using Sister Chromatid Exchange (SCE), mitotic index (MI) and chromosomal aberations (CAs) methods, comparing lymphocyte chromosomes of treated patients and a control group of healthy individuals. The results indicated a significant increase of SCE frequencies and decrease of MI in the treated group (p < 0.001). Regarding CAs, any difference between the groups was not determined.

Parole chiave

  • cystic echinococcosis
  • albendazole
  • genotoxicity
  • Sister Chromatid Exchange
Accesso libero

Comparative study of the intestinal strongylid communities of equidae in the Askania-Nova biosphere reserve, Ukraine

Pubblicato online: 01 Jun 2007
Pagine: 62 - 69

Astratto

Abstract

Comparative studies of the intestinal strongylid communities of 14 ponies, 6 donkeys and 9 zebras from the “Askania-Nova” Biosphere reserve (Ukraine) were carried out after deworming the hosts with aversectin drug. Faecal sampling (200 g each) was performed at 24, 36, 48, 60, and 72 hours after treatment; all nematodes expelled were collected and identified. Thirty strongylid species from 12 genera were found; 7 species from the Strongylinae and 23 species from Cyathostominae. In ponies 27 species were found (range 8–23; mean 14 ± 3.8). In donkeys 23 species were found (range 11–15; mean 12 ± 1.3). Cyathostomum tetracanthum a species specific for donkeys was found for the first time in Ukraine. In zebras 17 species were found (range 2–13; mean 7 ± 3.6). The results obtained confirmed the specificity of the intestinal strongylid fauna of different equid species grazing on the same pastures in the “Askania-Nova” reserve.

Parole chiave

  • Strongylida
  • Cyathostominae
  • ponies
  • donkeys
  • zebras
  • Ukraine
Accesso libero

Abomasal nematodes of sheep and goats slaughtered in Awassa (Ethiopia): species composition, prevalence and vulvar morphology

Pubblicato online: 01 Jun 2007
Pagine: 70 - 75

Astratto

Abstract

A study was carried out to determine the prevalence of abomasal nematodes of sheep and goats slaughtered in Awassa town from January 2006 through June 2006 with special emphasis given to Haemonchus spp. and to characterize vulvar morphs of female Haemonchus worms. During the study period 180 abomasa of sheep and 132 abomasa of goats were examined. Three genera of nematodes were identified in both sheep and goats abomasa with overall prevalence of 91.1 % and 87.1 % respectively. The specific prevalence rates observed were 81.1 % for Haemonchus spp., 47.2 % for Trichostrongylus axei, and 19.4 % for Teladorsagia spp. in sheep and 76.5 % for Haemonchus spp., 39.4 % for T. axei and 20.5 % for Teladorsagia spp. in goats. Out of 653 female Haemonchus recovered from sheep, 37.8 % had a linguiform vulvar flap, 30 % knobbed and 35.4 % smooth vulvar morphs. Out of 448 female Haemonchus recovered from goats, 43.8 % had linguiform vulvar flaps, 27.2 % knobbed and 29 % smooth morph type. A total of 239 linguiform female Haemonchus from sheep were further classified in to 15.1 % linguiform A (LA), 17.5 % linguiform B (LB), 39.7 % linguiform C (LC) and 27.6 % linguiform I (LI) and similarly from goats 196 linguiform female Haemonchus were further classified into 11.2 % LA, 12.2 % LB, 44.9 % LC and 31.6 % LI. Similar findings were observed in both host species regarding the worm burden, prevalence of infection and morphological pattern of Haemonchus species. Generally a high infection rate with abomasal nematodes was observed in both sheep and goats of the study area.

Parole chiave

  • abomasal nematodes
  • Awassa
  • Haemonchus
  • Teladorsagia
  • Trichostrongylus axei
  • prevalence
  • vulvar flap
Accesso libero

Monogenoidean parasites of fishes associated with coral reefs in the Ras Mohammed National Park, Egypt: preliminary results

Pubblicato online: 01 Jun 2007
Pagine: 76 - 79

Astratto

Abstract

A parasitological survey of the monogenoids of 14 species of common fishes associated with the local coral reefs of the Ras Mohammed National Park, National Parks of Egypt South Sinai Sector, Egypt, was carried out from May 2003 to May 2005. The monogenoids collected during the survey included 17 species: 8 previously described species, 7 new species in established genera, and 2 new species belonging to new genera.

Parole chiave

  • Monogenoidea
  • Ras Mohammed National Park
  • Red Sea
  • Egypt
Accesso libero

Communities of free living and plant parasitic nematodes in hop gardens in Slovakia

Pubblicato online: 01 Jun 2007
Pagine: 80 - 86

Astratto

Abstract

A total of 61 nematode species belonging into 48 genera was identified in soil of nine localities of hop gardens in Slovakia. From free living soil nematodes the most abundant were the genus Rhabditis-eudominant taxon, species Aphelenchus avenae — dominant taxon, the species Cephalobus persegnis, Chiloplacus propinquus, Aglenchus agricola, Nothotylenchus acris, Aporcelaimellus obtusicaudatus and genus Eudorylaimus were subdominant taxa. Only ten species of plant parasitic nematodes were observed — Ditylenchus dipsaci, Bitylenchus dubius, Merlinius brevidens, Rotylenchus robustus, Helicotylenchus canadensis, H. digonicus, Pratylenchus penetrans, P. pratensis, Heterodera humuli, and Paratylenchus bukowinensis. Bitylenchus dubius and Merlinius brevidens belonged to dominant taxa, the species Heterodera humuli and Helicotylenchus digonicus to subdominant taxa. The occurrence of Heterodera humuli cysts was recorded at all localities studied, and the occurrence of H. humuli larvae in soil during autumn indicates that possibly more than one generation of the parasite have developed within one vegetation period. The proportion of individual trophic groups in nematode communities of hop gardens was characterised by the prevalence of bacterial feeders followed by plant parasites. The ecological characteristics used for ecological evaluation, especially Maturity Index and Plant Parasitic Index/Maturity Index, indicate a more disturbed environment. Although hop is a perennial plant, the structure and ecology of its nematode communities is more similar to the agricultural ecosystems with a higher level of agricultural practices.

Parole chiave

  • nematode communities
  • hop gardens
  • Slovakia
Accesso libero

Soil nematode responses to heavy metal stress

Pubblicato online: 01 Jun 2007
Pagine: 87 - 91

Astratto

Abstract

The effect of Cu and Zn on soil nematode communities at the depth of 0–20 cm was investigated along a pollution gradient with increasing distance from a copper smelter in Northeast China. The results showed that the abundance of total nematodes significantly increased with increasing distance from the smelter, and nematode taxon richness also exhibited an increasing trend. Twenty genera were observed in our study, and Paratylenchus was the dominant genus at all the sampling sites. The numbers of total nematodes, bacterivores, plant parasites, omnivores-predators and the values of NCR (Nematode Channel Ratio) negatively correlated with total Cu (P < 0.01), total and available Zn (P < 0.01). The values of SI (Structure Index) negatively correlated with total Cu (P < 0.05). Among the nematode ecological indices examined, NCR and SI were found to be sensitive indicators for assessing the effect of heavy metals on soil nematode communities in this study.

Parole chiave

  • soil nematode
  • community structure
  • ecological indices
  • copper smelter
  • heavy metals
Accesso libero

For the 80th birthday of Professor Gustáv Čatár

Pubblicato online: 01 Jun 2007
Pagine: 92 - 92

Astratto

Accesso libero

For the 60th birthday of Professor Jozef Halgoš

Pubblicato online: 01 Jun 2007
Pagine: 93 - 93

Astratto

Accesso libero

In memory of parasitologist RNDr. Anna Gutteková, CSc.

Pubblicato online: 01 Jun 2007
Pagine: 94 - 94

Astratto

12 Articoli
Accesso libero

Morphometrical and molecular characterization of Bursaphelenchus species from Slovenia

Pubblicato online: 01 Jun 2007
Pagine: 37 - 42

Astratto

Abstract

The environmental conditions in Slovenia are relatively favourrable for the colonisation and spread of the pine wood nematode Bursaphelenchus xylophilus, a very dangerous pathogenic species which was recently identified in Europe in Portugal. To determine the presence of B. xylophilus in Slovenia and to introduce proper measures against its emergence and spread, a survey of Bursaphelenchus species was conducted in Slovenia from 2002 to 2005. Approximately 120 ha of conifer forests in Slovenia were surveyed for the presence of Bursaphelenchus species. In total, 206 wood samples were taken from the conifer forests. B. hofmanni, B. mucronatus were found for the first time in Slovenia, while B. xylophilus was not detected. Additionally, the species Aphelenchoides stammeri which is morphologically very similar to Bursaphelencus was found. All species have been described morphologically and characterized by ITS-RFLP analysis. Sequences of ribosomal DNA for B. hofmanni, B. mucronatus were analysed.

Parole chiave

  • Bursaphelenchus, Aphelenchoides
  • nematodes
  • plant parasitic
  • pine wood nematode
  • Slovenia
  • dissemination
  • identification
  • morphological characteristics
  • DNA characteristics
  • intraspecific type
  • internal transcribed spacer
  • ITS
  • restriction fragment length polymorphism
  • RFLP
Accesso libero

Sequences of the second internal transcribed spacer of ribosomal DNA for three species of Trichostrongylus (Nematoda: Trichostrongylidae) from sheep in Russia

Pubblicato online: 01 Jun 2007
Pagine: 43 - 46

Astratto

Abstract

For the first time, DNA sequence data were obtained for three species of Trichostrongylus from Russia. Internal transcribed spacer (ITS-2) of ribosomal DNA was sequenced for T. axei, T. colubriformis and T. probolurus from sheep from the Moscow region. ITS-2 rDNA length was estimated as 238 nucleotides for T. colubriformis and T. probolurus and 237 nucleotides for T. axei. The G+C content of the ITS-2 sequences of T. colubriformis, T. axei and T. probolurus were 31 %, 32 % and 34 % respectively. The level of interspecific differences in ITS-2 of rDNA of T. axei, T. probolurus and T. colubriformis ranged from 3 to 4 %. The ITS-2 sequences from the Russian specimens were compared with those of T. axei, T. probolurus and T. colubriformis from Australia and Germany. Intraspecific variation ranged from 0 % in T. colubriformis to 3.0 % in T. axei.

Parole chiave

  • Trichostrongylus spp.
  • ITS-2
  • interspecific differences
  • intraspecific variation
  • sheep
  • Russia
Accesso libero

Immune response of mice to Echinococcus multilocularis infection after therapy with amphotericin B colloidal dispersion

Pubblicato online: 01 Jun 2007
Pagine: 47 - 56

Astratto

Abstract

The effect of amphotericin B colloidal dispersion (ABCD) on selected immunological parameters and growth of the larval cysts in mice infected intraperitoneally with Echinococcus multilocularis protoscoleces was observed. ABCD was administered at a dose 10 mg/kg body weight twice a week from week 5 to 10 post infection (p.i.). The Echinococcus infection suppressed the proliferative response of splenic T lymphocytes to nonspecific mitogen concanavalin A throughout almost the whole course of the experiment and ABCD administration did not affect this inhibittion. The increase in the proliferative response of B lymphocytes to lipopolysaccharide was found in infected mice with ABCD treatment from week 6 to 10 p.i. ABCD induced a significant rise of the splenic CD4 T cell subpopulation in infected mice only on week 6 p.i. The CD8 T subpopulation was not influenced by the therapy. The level of serum Th1 cytokine IFN-γ in infected and ABCD treated mice was elevated only at week 8 p.i., while the level of serum Th2 cytokine IL-5 was not influenced by the therapy. The ABCD treatment inhibited the IFN-γ production by splenocytes in vitro from week 6 to 10 p.i. On the contrary, the IL-5 production in vitro was stimulated at weeks 8 and 12 p.i. None antiparasitic effect of ABCD on larval growth was determined.

Results suggest that amphotericin B colloidal dispersion did not affect the inhibited Th1 immune response after parasite infection. On the contrary, ABCD advanced the Th2 immune response development, which allows the progressive growth of the parasite.

Parole chiave

  • Echinococcus multilocularis
  • amphotericin B
  • mice
  • T and B lymphocytes
  • IL-5
  • IFN-γ
  • superoxide anion
Accesso libero

Genotoxic effects of albendazole in patients medicated for cystic echinococcosis

Pubblicato online: 01 Jun 2007
Pagine: 57 - 61

Astratto

Abstract

Cystic echinococcosis (CE) due to Echinococcus granulosus is one of the most important helminthic diseases in Turkey where it constitutes a public health and economic problems. Its mean annual incidence in humans is 4.4/100 000 and the prevalence of the tapeworm agent in domestic animals ranges from 11.2 to 50.7 %. Since 1980s, albendazole has been used for treatment of the disease, and this benzimidazole drug has been considered to be of relatively low toxicity. However, prolonged albendazole therapy of CE became to be a common practice, and data on possible genotoxic effects of the medication in humans are lacking. This study has concerned 17 women and 11 men, in total 28 patients with liver cystic hydatid complaints, who were administered albendazole (15 mg/kg) preoperatively (2 weeks) and postoperatively (6 months). Genotoxic effects of albendazole were searched using Sister Chromatid Exchange (SCE), mitotic index (MI) and chromosomal aberations (CAs) methods, comparing lymphocyte chromosomes of treated patients and a control group of healthy individuals. The results indicated a significant increase of SCE frequencies and decrease of MI in the treated group (p < 0.001). Regarding CAs, any difference between the groups was not determined.

Parole chiave

  • cystic echinococcosis
  • albendazole
  • genotoxicity
  • Sister Chromatid Exchange
Accesso libero

Comparative study of the intestinal strongylid communities of equidae in the Askania-Nova biosphere reserve, Ukraine

Pubblicato online: 01 Jun 2007
Pagine: 62 - 69

Astratto

Abstract

Comparative studies of the intestinal strongylid communities of 14 ponies, 6 donkeys and 9 zebras from the “Askania-Nova” Biosphere reserve (Ukraine) were carried out after deworming the hosts with aversectin drug. Faecal sampling (200 g each) was performed at 24, 36, 48, 60, and 72 hours after treatment; all nematodes expelled were collected and identified. Thirty strongylid species from 12 genera were found; 7 species from the Strongylinae and 23 species from Cyathostominae. In ponies 27 species were found (range 8–23; mean 14 ± 3.8). In donkeys 23 species were found (range 11–15; mean 12 ± 1.3). Cyathostomum tetracanthum a species specific for donkeys was found for the first time in Ukraine. In zebras 17 species were found (range 2–13; mean 7 ± 3.6). The results obtained confirmed the specificity of the intestinal strongylid fauna of different equid species grazing on the same pastures in the “Askania-Nova” reserve.

Parole chiave

  • Strongylida
  • Cyathostominae
  • ponies
  • donkeys
  • zebras
  • Ukraine
Accesso libero

Abomasal nematodes of sheep and goats slaughtered in Awassa (Ethiopia): species composition, prevalence and vulvar morphology

Pubblicato online: 01 Jun 2007
Pagine: 70 - 75

Astratto

Abstract

A study was carried out to determine the prevalence of abomasal nematodes of sheep and goats slaughtered in Awassa town from January 2006 through June 2006 with special emphasis given to Haemonchus spp. and to characterize vulvar morphs of female Haemonchus worms. During the study period 180 abomasa of sheep and 132 abomasa of goats were examined. Three genera of nematodes were identified in both sheep and goats abomasa with overall prevalence of 91.1 % and 87.1 % respectively. The specific prevalence rates observed were 81.1 % for Haemonchus spp., 47.2 % for Trichostrongylus axei, and 19.4 % for Teladorsagia spp. in sheep and 76.5 % for Haemonchus spp., 39.4 % for T. axei and 20.5 % for Teladorsagia spp. in goats. Out of 653 female Haemonchus recovered from sheep, 37.8 % had a linguiform vulvar flap, 30 % knobbed and 35.4 % smooth vulvar morphs. Out of 448 female Haemonchus recovered from goats, 43.8 % had linguiform vulvar flaps, 27.2 % knobbed and 29 % smooth morph type. A total of 239 linguiform female Haemonchus from sheep were further classified in to 15.1 % linguiform A (LA), 17.5 % linguiform B (LB), 39.7 % linguiform C (LC) and 27.6 % linguiform I (LI) and similarly from goats 196 linguiform female Haemonchus were further classified into 11.2 % LA, 12.2 % LB, 44.9 % LC and 31.6 % LI. Similar findings were observed in both host species regarding the worm burden, prevalence of infection and morphological pattern of Haemonchus species. Generally a high infection rate with abomasal nematodes was observed in both sheep and goats of the study area.

Parole chiave

  • abomasal nematodes
  • Awassa
  • Haemonchus
  • Teladorsagia
  • Trichostrongylus axei
  • prevalence
  • vulvar flap
Accesso libero

Monogenoidean parasites of fishes associated with coral reefs in the Ras Mohammed National Park, Egypt: preliminary results

Pubblicato online: 01 Jun 2007
Pagine: 76 - 79

Astratto

Abstract

A parasitological survey of the monogenoids of 14 species of common fishes associated with the local coral reefs of the Ras Mohammed National Park, National Parks of Egypt South Sinai Sector, Egypt, was carried out from May 2003 to May 2005. The monogenoids collected during the survey included 17 species: 8 previously described species, 7 new species in established genera, and 2 new species belonging to new genera.

Parole chiave

  • Monogenoidea
  • Ras Mohammed National Park
  • Red Sea
  • Egypt
Accesso libero

Communities of free living and plant parasitic nematodes in hop gardens in Slovakia

Pubblicato online: 01 Jun 2007
Pagine: 80 - 86

Astratto

Abstract

A total of 61 nematode species belonging into 48 genera was identified in soil of nine localities of hop gardens in Slovakia. From free living soil nematodes the most abundant were the genus Rhabditis-eudominant taxon, species Aphelenchus avenae — dominant taxon, the species Cephalobus persegnis, Chiloplacus propinquus, Aglenchus agricola, Nothotylenchus acris, Aporcelaimellus obtusicaudatus and genus Eudorylaimus were subdominant taxa. Only ten species of plant parasitic nematodes were observed — Ditylenchus dipsaci, Bitylenchus dubius, Merlinius brevidens, Rotylenchus robustus, Helicotylenchus canadensis, H. digonicus, Pratylenchus penetrans, P. pratensis, Heterodera humuli, and Paratylenchus bukowinensis. Bitylenchus dubius and Merlinius brevidens belonged to dominant taxa, the species Heterodera humuli and Helicotylenchus digonicus to subdominant taxa. The occurrence of Heterodera humuli cysts was recorded at all localities studied, and the occurrence of H. humuli larvae in soil during autumn indicates that possibly more than one generation of the parasite have developed within one vegetation period. The proportion of individual trophic groups in nematode communities of hop gardens was characterised by the prevalence of bacterial feeders followed by plant parasites. The ecological characteristics used for ecological evaluation, especially Maturity Index and Plant Parasitic Index/Maturity Index, indicate a more disturbed environment. Although hop is a perennial plant, the structure and ecology of its nematode communities is more similar to the agricultural ecosystems with a higher level of agricultural practices.

Parole chiave

  • nematode communities
  • hop gardens
  • Slovakia
Accesso libero

Soil nematode responses to heavy metal stress

Pubblicato online: 01 Jun 2007
Pagine: 87 - 91

Astratto

Abstract

The effect of Cu and Zn on soil nematode communities at the depth of 0–20 cm was investigated along a pollution gradient with increasing distance from a copper smelter in Northeast China. The results showed that the abundance of total nematodes significantly increased with increasing distance from the smelter, and nematode taxon richness also exhibited an increasing trend. Twenty genera were observed in our study, and Paratylenchus was the dominant genus at all the sampling sites. The numbers of total nematodes, bacterivores, plant parasites, omnivores-predators and the values of NCR (Nematode Channel Ratio) negatively correlated with total Cu (P < 0.01), total and available Zn (P < 0.01). The values of SI (Structure Index) negatively correlated with total Cu (P < 0.05). Among the nematode ecological indices examined, NCR and SI were found to be sensitive indicators for assessing the effect of heavy metals on soil nematode communities in this study.

Parole chiave

  • soil nematode
  • community structure
  • ecological indices
  • copper smelter
  • heavy metals
Accesso libero

For the 80th birthday of Professor Gustáv Čatár

Pubblicato online: 01 Jun 2007
Pagine: 92 - 92

Astratto

Accesso libero

For the 60th birthday of Professor Jozef Halgoš

Pubblicato online: 01 Jun 2007
Pagine: 93 - 93

Astratto

Accesso libero

In memory of parasitologist RNDr. Anna Gutteková, CSc.

Pubblicato online: 01 Jun 2007
Pagine: 94 - 94

Astratto

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