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EN
The aim of the study was to determine the prevalence and intensity of infection of European eel, Anguilla anguilla (L.), with nematode and monogenean gill parasites. Fifty individuals obtained from Vistula Lagoon stocking material were examined in August and October 2006. The prevalence of infection with Pseudodactylogyrus anguillae (Yin et Sproston) in August was 52.4%, and in October 17.2%, while the mean intensity of infection in the same periods was 4.0 and 1.2 individuals, respectively. The prevalence of infection with Anguillicola crassus Kuwahara, Niimi et Itagaki was 4.8 (August) and 20.7% (October), while the mean intensity was 1.0 and 2.5 individuals. Releasing parasite-infected stocking material is harmful from the perspective of fisheries management and simultaneously increases the area of occurrence of the parasites.
PL
Celem badań było określenie ekstensywności i intensywności zarażenia węgorza europejskiego, Anguilla anguilla (L.) pasożytniczymi nicieniami i skrzelowcami. W sierpniu i październiku 2006 roku zbadano 50 osobników narybku węgorzy pochodzących z partii materiału do zarybienia Zalewu Wiślanego. Ekstensywność zarażenia Pseudodactylogyrus anguillae w sierpniu wynosiła 52,4%, a w październiku 17,2%, natomiast średnia intensywność w porównywanych okresach wynosiła odpowiednio 4,0 i 1,2 osobn. (tab. 1). Ekstensywność zarażenia Anguillicola crassus wynosiła 4,8 (sierpień) i 20,7% (październik), a średnia intensywność 1,0 oraz 2,5 osobn. Wykorzystywanie zarażonych węgorzy jako materiału zarybieniowego jest szkodliwe z punktu widzenia gospodarki rybackiej oraz powiększania areału występowania pasożytów.
EN
One hundred and four Nematodes parasites of Testudinidae have been recorded. A list of all valid species within orders, superfamily, family and genus are given. For each species the host-type, locality-type and other records are presented. The subspecies are raised to level of species. The highest number of taxonomic studies concerned the Palaearctic region and the Ethiopian region; but a lower number of studies were devoted to the other regions: Oriental, Neotropical and the Nearctic. The parasite species diversity of nematodes seems to be linked to the species diversity of hosts. A good significant relationship between the number of taxonomic studies and the species diversity of hosts was noted and a significant relationship between the species diversity of parasites and the generic diversity of the parasites was also observed. The host specificity does not differ between the oxyurida species and the ascaridida species.
EN
While investigating the nematode parasites of commercial fish caught off the coast of Madeira Island (Atlantic Ocean, Portugal), we collected five specimens of Oncophora melanocephala (Rudolphi, 1819) (Nematoda, Camallanidae) infecting the chub mackerel Scomber japonicus Houttuyn. This is the first record of O. melanocephala from chub mackerel and a new geographic record. Four additional larval specimens with developing buccal capsules were found in the chub mackerel examined.
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2011
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tom 56
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nr 1
EN
Two species of Kalicephalus Molin, 1861 were collected from the intestine of Varanus salvator (Laurenti, 1768) from Guangdong Wildlife Rescue Centre, Guangzhou, Guangdong Province, China. Kalicephalus (Kalicephalus) guangdongensis sp. nov. is similar to K. (K.) schadi Ogden, 1966 and K. (K.) schadi fotedari Kalia et Nayital, 1989 in having extremely long spicules, but differs from the latter in the relative length of spicules (spicules longer than the total body length instead of spicules almost three quarters of the total body length). Kalicephalus (Kalicephalus) schadi fotedari Kalia et Nayital, 1989 is reported for the first time in China, and Varanus salvator is a new host record.
EN
The large stomach worm, Haemonchus contortus is a highly pathogenic nematode parasite of sheep (Ovis aries) and goats (Capra hircus). It sucks blood and causes acute disease, anaemia and severe economic losses due to morbidity and mortality. This paper compares characteristics of surface cuticular ridges (synlophe) and morphometrics of total body length, cervical papillae, spicules, barbs, gubernaculum and vulvar flap morphology of H. contortus recovered in the two hosts from the States of Perak and Kelantan, Peninsular Malaysia. The morphological variation in H. contortus samples recovered from the two hosts in Kelantan was found to be higher than from Perak. A discriminant function, based on three measurements of the spicule, confirmed the identity of male worms in the two hosts as belonging to the same species H. contortus.
EN
The infection of sheep with gastrointestinal nematodes was studied during 4 consecutive years in a flock from southern Poland in which ewes were grazed from May to October and lambs from June to October. Each month during the grazing season, 1 ewe and 2 lambs were necropsied and their worm burdens established at the species level. At the end of the grazing season in 1993 and 1994, 12 lambs selected from the progeny of 2 resistant sires (as established by ranking the faecal egg counts of all their progeny) and 12 from 2 susceptible sires (plus 12 from intermediate sires in 1994), were sampled for individual egg counts and faecal culture. Subsequently they were necropsied to verify if resistance was specific. Teladorsagia circumcincta and Haemonchus contortus were the predominant species present; Trichostrongylus vitrinus, Trichostrongylus axei, Nematodirus filicollis and Cooperia curticei were also present but less abundant. Trichostrongylus colubriformis, Nematodirus helvetianus, Strongyloides papillosus, Chabertia ovina, and Trichuris ovis were present in low numbers except in the last year when S. papillosus was more common. Nematodirus spp. was more common in worm burdens of the lambs than in ewes (25% of <2%). Male lambs were more commonly infected with T. circumcincta and S. papillosus than females but less commonly infected with N. filicollis and C. curticei. Lambs of resistant sires had around half as many worms as those from susceptible sires; although the species composition was essentially similar, except for a somewhat lower proportion of T. circumcincta in 1994 in lambs of resistant sires. The diversity of nematodes present was assessed in terms of species richness, the Shannon index and the equitability index of Pielou. Except for higher richness values in 1992, these indices were not affected by the month of the grazing season, the year, the type of host (ewe or lamb), the sex or the resistance status of the lambs, despite minor differences in species composition. This indicated a high stability of the species diversity in this flock through time as well as between host characteristics.
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