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DC Field | Value | Language |
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dc.contributor.author | Noorzaid Muhamad | - |
dc.contributor.author | Lisa R. Walker | - |
dc.contributor.author | Kevin C. Pedley | - |
dc.contributor.author | David C. Simcock | - |
dc.contributor.author | Simon Brown | - |
dc.date.accessioned | 2013-05-30T09:19:22Z | - |
dc.date.available | 2013-05-30T09:19:22Z | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Parasitology International 61 (2012) 487–492 | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/pii/S1383576912000499 | - |
dc.identifier.uri | http://ir.unikl.edu.my/jspui/handle/123456789/2283 | - |
dc.description.abstract | Abstract The initial rate of NH3/NH4+ accumulation in a medium containing L3Teladorsagia circumcincta was 0.18–0.6 pmol h− 1 larva− 1, which increased linearly with larval density. However it appeared that the larva-generated external concentration of NH3/NH4+ did not exceed about 130 μM. The rate of NH3/NH4+ accumulation increased with temperature between 4 °C and 37 °C, declined with increasing pH or increasing external NH3/NH4+ concentration and was not significantly affected by the concentration of the phosphate buffer or by exsheathing the larvae. We infer from these data that the efflux of NH3/NH4+ is a diffusive process and that the secreted or excreted NH3/NH4+ is generated enzymatically rather than dissociating from the surface of the nematode. The enzymatic source of the NH3/NH4+ is yet to be identified. Since the concentration of NH3/NH4+ in the rumen and abomasum is higher than 130 μM, it is unlikely that T. circumcincta contributes to it, but NH3/NH4+ may be accumulated from the rumen fluid by the nematode. | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.ispartofseries | Parasitology International; | - |
dc.subject | Teladorsagia circumcincta | en_US |
dc.subject | Parasite | en_US |
dc.subject | Ammonia | en_US |
dc.subject | Diffusion | en_US |
dc.subject | Kinetics | en_US |
dc.title | The initial kinetics of NH3/NH4+ efflux from L3 Teladorsagia circumcincta | en_US |
Appears in Collections: | Journal Articles |
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The unitial.pdf | 14.43 kB | Adobe PDF | View/Open |
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