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La repartition ecologique des Amphipodes de la famille des Gammaridae dans la Slack et son estuaire Naturalis
Stock, J.H.; Nijssen, H.; Kant, P..
The ecological distribution of 15 species of Amphipoda of the family Gammaridae in the river Slack and its estuary (Pas-de-Calais, northwestern France) is described, especially in relation to environmental factors as current and chlorinity.
Tipo: Article / Letter to the editor
Ano: 1966 URL: http://www.repository.naturalis.nl/record/505475
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What is Gammarus campylops of Sars, 1894 Naturalis
Stock, J.H.; Kant, P..
A revision of the specimens described by Sars, 1894, as Gammarus campylops Leach, 1814, proved that they did not belong to that species, nor to Gammarus ochlos Reid, 1945 (= G. sarsi Reid, 1943), as Reid believed. Reid’s species, of which also original specimens have been reexamined, is identical with Gammarus zaddachi Sexton, 1912. Sars’s material is redescribed here in detail, under the name of Gammarus inaequicauda Stock, 1966.
Tipo: Article / Letter to the editor
Ano: 1966 URL: http://www.repository.naturalis.nl/record/505448
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Upstream and downstream migrations in relation to the reproductive cycle and to environmental factors in the amphipod, Gammarus zaddachi Naturalis
Dennert, H.G.; Dennert, A.L.; Kant, P.; Pinkster, S.; Stock, J.H..
1. The real identity has been studied of juvenile gammarids, that were found in the fresh-water tidal region of the River Slack (France), 3 to 4 km inland of the mouth of its estuary. At the outset, these juveniles were (on basis of their morphology) considered to belong to Gammarus salinus. 2. Rearing demonstrated that the juveniles in question developed into adult Gammarus zaddachi. This indicates that the morphological criteria used in discriminating between G. salinus and G. zaddachi fail in juvenile material. Several morphological criteria are discussed and tested. It appears that a 100% certain key character does not exist, meaning that it is not possible to identify with absolute certainty all individuals in mixed populations of the two species. 3....
Tipo: Article / Letter to the editor
Ano: 1969 URL: http://www.repository.naturalis.nl/record/504231
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