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| Registros recuperados: 1.500 | |
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| Heip, C.H.R.; Vincx, M.; Vranken, G.. |
| Nematodes are probably the most abundant metazoans in the biosphere and of very great importance to man. As parasites of man they are responsible for disease in hundreds of millions of people and an estimated eight billion nematodes are enjoying food, warmth and shelter in human intestines today; <i>Ascaris lumbricoides</i> is, after the viruses responsible for diarrhoeal disease, the second most infectious organism in the world, about a quarter of the world's population being infected (Ash, Crompton & Keymer, 1984). Plant-parasitic nematodes cause considerable damage to crops and many species are vectors of soil-borne viruses. Today, plant nematology is one of the most vital fields in agricultural research and is studied in many university... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecology; Literature reviews; Nematoda [Nematodes]. |
| Ano: 1985 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3205 |
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| Mommaerts, J.-P.. |
| The South Bight of the North Sea has been investigated for the photosynthetic capacity of net- and nannoplankton, the fractional filtration method being used simultaneously with the C14 technique. The water appeared to be well mixed so that no important variations occurred along the vertical profile. The horizontal distribution of net-/nannoplankton ratios showed, however, a zonation pattern with netplankton-dominant activity near to the coast and nannoplankton-dominant activity further off. The interference of the River Scheldt has also been demonstrated. The various implications of the 'metabolic structure' of the phytoplankton community demonstrated by the fractionation method are discussed. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nannoplankton Primary production ANE; North Sea; Southern Bight. |
| Ano: 1973 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3469 |
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| Martens, P.M.. |
| This study constitutes a revision of the Digonoporid Lithophora Proseriata which correspond to the Monocelididae sensu Karling 1966a. The revision is based on morphological and karyological investigations. Morphological research is performed on living animals as well as on whole mounts and sectioned material. For about 30 species the copulatory organs are reconstructed using serial sections. Karyological investigation consist of a and p karyology. Both morphological and karyological data are used for phylogenetic analysis and the new system proposed reflects the hypothesized genealogical relationships. Since the beginning of our studies, the total amount of species described for this group has increased from 81 to 133, 41 of which are described by us. In... |
| Tipo: Info:eu-repo/semantics/doctoralThesis |
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| Ano: 1989 |
URL: http://www.vliz.be/imisdocs/publications/226682.pdf |
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| Heip, C.H.R.; Smol, N.; Absillis, V.. |
| The large nematode <i>Oncholaimus oxyuris</i> Ditlevsen, 1911 is a dominant predator in a shallow polyhaline brackish-water pond in Belgium. The reproductive potential of this species was calculated as the intrinsic rate of natural increase r = 1/<i>G</i> ln <i>pN<sub>e</sub></i>, in which <i>D</i> is the generation time, <i>p</i> is the percentage of females, and <i>N<sub>e</sub></i> is the number of eggs per female. The generation time varies between 570 days at 5°C and 101 days at 25°C and is the main factor in the determination of <i>r</i>. The relationship between <i>r</i> and temperature is nearly linear and is given by... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1978 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3577 |
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| Huys, R.; Herman, P.M.J.; Heip, C.H.R.; Soetaert, K.. |
| During a synoptic survey carried out in April-May 1986, 171 localities were sampled in the North Sea as delimited by the Straits of Dover in the south and approximately by the 100m isobath in the north. Meiobenthos included Nematoda, Copepoda, Turbellaria, Gastrotricha, Polychaeta, Oligochaeta, Priapulida, Kinorhyncha, Ostracoda, Halacarida, Isopoda, Tanaidacea, Bryozoa, Cnidaria, Sipunculida, Echiurida, Nemertini and Tardigrada. Nematodes were the dominant group in virtually all stations, their densities ranging from 61 to 4167 individuals. 10cm<sup>-2</sup>. Only in the Southern Bight, where nematode numbers were low, did harpacticoids sometimes represent the dominant meiobenthic taxon. There was a tendency for nematode (and total... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1992 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7250 |
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| Wegrzynek, D.; Jambers, W.; Van Grieken, R.; Eisma, D.. |
| Individual particle analysis using electron probe X-ray microanalysis was performed on sediment cores from the Gulf of Lions (Western Mediterranean Sea), on atmospheric aerosols sampled in Corsica and originating from Northern Africa, and on Rhône suspended matter. Cluster analysis was done to yield major particle types and kriging spatial analysis was applied to obtain the distributions of the particle types in the sediment surface layers. For three sediment cores, the depth profiles of particle groups were examined. The predominant particle types composing the sediment material in the Gulf of Lions were found to be Si-rich particles (quartz and biogenic silicate), aluminosilicate minerals (illite, kaolinite, chlorite) and Ca-rich particles (aragonite,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8299 |
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| Coppejans, E.. |
| The tetrasporophytes of <i>Polysiphonia banyulensis</i> Coppejans collected in Corsica correspond exactly to those collected at Banyuls (Pyr.-Or., France), in that these also have 5 pericentral cells. The presence of 4 pericentral cells, mentioned in the original description is only correct for a part of the holotype. Thus <i>P. banyulensis</i> belongs to the section <i>Polysiphonia</i>.The female gametophytes, collected in July 1977 at Calvi (Corsica) are smaller and present numerous short-stalked spherical cystocarps without special cells around the ostiole. The other characters of the species (typical aspect of trichoblasts, presence of 5 pericentral cells, total absence of cortication) are also present. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Polysiphonia banyulensis. |
| Ano: 1979 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3605 |
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| Vanhaecke, P.; Sorgeloos, P.. |
| A comparative study has been carried out on the hatching rate of <i>Artemia</i> cysts of different geographical origin and on different batches of the same source. Substantial variation, among as well as within geographical strains, indicates that the hatching-rate criterion is not strain specific. In an attempt to identify the parameters which influence the hatching rate, it was found that the cyst-drying technique as well as the storage conditions may significantly affect this criterion. It has also been demonstrated that the cysts' hatchability is influenced by their previous drying and storing conditions. Optimal hatching results are guaranteed when a fluidized bed dryer is used and the cysts are stored under vacuum or nitrogen. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Comparative studies; Hatching; Artemia. |
| Ano: 1982 |
URL: http://www.vliz.be/imisdocs/publications/261925.pdf |
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| Dhondt, A.V.. |
| This paper is the third of a seies dealing with the systematic revision of the European Cretaceous <i>Chlamydinae</i> (Pectinidae, Bivavia, Mollusca). Nine species of the genus <i>Chlamys</i> Roeding, 1798 (<i>C. faujasi</i> (M. Defrance, 1825), <i>C. dentata</i> (Nilsson, 1827), <i>C? Elongata</i> (Lamarck, 1819), <i>C? Subacuta</i>(Lamarck, 1819), <i>C? subdepressa</i> (d'Archiac, 1847), <i>C? martiniana</i> (d'Orbigny, 1850), <i>C? archiaciana</i> (d'Orbigny, 1847), <i>C? goldfussi</i> (Deshayes in Leymerie, 1843), <i>C? icaunensis</i> (Cotteau, 1854) and six species of the genus <i>Mimachlamys</i> (Iredale,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cretaceous Bivalvia Europe; Europe. |
| Ano: 1973 |
URL: http://www.vliz.be/imisdocs/publications/252819.pdf |
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| Registros recuperados: 1.500 | |
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