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| Casanova, Jean-paul. |
| Our observations concern, on the one hand the samples from 33 stations distributed over the Gulf of Lion and 13 stations located along the eastern coast of Corsica (cruise of autumn 1958 of the "Président-Théodore-Tissier"), and on the other hand, those of 2 stations conducted off Sète (cruise of the "Thalassa", October 1963).All the fisheries were surface fisheries carried out with a "Discovery" type net towed for 10 minutes. In the two sectors investigated in 1958, collections were conducted over a short period of time-7 days (27 September - 3 October) in the Gulf of Lion and 3 days (11-13 October) in the north of the Tyrrhenian Sea. This enables us to have an insight into the distribution of Penilia over a precise period of time. On the contrary, and... |
| Tipo: Text |
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| Ano: 1965 |
URL: http://archimer.ifremer.fr/doc/1965/publication-3993.pdf |
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| Casanova, Jean-paul. |
| In this high sea sector, we identified 7 species of Thaliacea: one Pyrosorne (Pyrosoma atlanticum), three Salps (Thalia democratica, Salpa fusiformis, Pegea confoederata) and three Doliolids (Doliolum nationalis, Doliolina mulleri. Doliolum denticulatum).If the distribution of the first two groups did not bring any new knowledge concerning their distribution or their behaviour in the Mediterranean Sea, it was not the same for the third group.Indeed, we demonstrated the existence of close relationships between the distribution of doliolids and local marine circulation. As observed by TRÉGOUBOFF (1965) in the Villefranche-sur-Mer area where the modification of the layers by the easterly wind brought doliolids down to 1 800 m deep, we found them at more than... |
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| Ano: 1966 |
URL: http://archimer.ifremer.fr/doc/1966/publication-3979.pdf |
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| Braconnot, Jean-claude; Casanova, Jean-paul. |
| Examining the planktonic material collected by the oceanographic vessel of the Institute of Marine Fisheries the "Président Théodore-Tissier", in autumn 1958, in the western Mediterranean area located north of the 42nd parallel, some samples proved to be very interesting in the study of individuals budded by Doliolum nationalis phorozoids, recently characterised by a member of our team. This pelagic tunicate abounds in the area, and contrary to what is usually observed in the Mediterranean Sea or the Atlantic Ocean, for this species, embodied only by phorozoids, two stages-a phorozoid stage and a (apparently) gonozoid stage-meet together. But these gonozoids are aberrant: they have both well-shaped gonads and a ventral peduncle with buds, a typical... |
| Tipo: Text |
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| Ano: 1967 |
URL: http://archimer.ifremer.fr/doc/1967/publication-3871.pdf |
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| Casanova, Jean-paul. |
| The cladocerans that we studied came from 30 samples taken during an expedition on board the "Thalassa" in five stations (Fig. 1) located between the Balearic Islands and Sardinia and between the North African coast and the 40th parallel and covered some of the deepest parts of the western Mediterranean Sea....These catches were valuable for the analysis of the distribution of cladocerans according to depth and distance from the coast. These data provide interesting additions to the recent observations made by Trégouboff (1963) that we will briefly review here. Trégouboff detailed the distribution of these organisms in the open sea off Villefranche-sur-Mer, at 8 to 14 nautical miles from the coast and mentioned four species, Evadne spinifera, E.... |
| Tipo: Text |
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| Ano: 1964 |
URL: http://archimer.ifremer.fr/doc/1964/publication-4043.pdf |
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| Casanova, Jean-paul. |
| Sagitta lucida is a large chaetognath (max. length = 36mm), characterized by a transparent and flaccid body, a collarette restricted to the neck region, long anterior fins, narrow and rayless on their anterior two-thirds, and ovoid seminal vesicles. Sagitta adenensis , another large species (length = 32 mn), with also a flaccid body, has a collarette, anterior teeth nearly as numerous as posterior ones, lateral fins with rays only on the outer edge. The two specimens have been caught in a trawl from a depth of 400 m, near Djibouti. |
| Tipo: Text |
Palavras-chave: ISW; Chaetognatha; Mesopelagic zone; Geographical distribution; New records. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/publication-1831.pdf |
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| Casanova, Jean-paul. |
| Research on the vertical distribution of zooplankton in the western Mediterranean is still rare. With the exception of the Thor's campaigns covering the whole of the two basins, vertical fishing has long remained rare and localised. Nonetheless, for some ten years now the practise has been growing, from combined deep harvests to hydrological reports. It is in this context that the Institute of Maritime Fishing carried out, with the oceanographic ships President Theodore Tissier in 1958 and Thalassa in 1961 and 1963, several series (respectively K, N, and P) of vertical samples, at various levels throughout the western basin, but most especially in the Ligurian-Provençal channel and in the central sector (figure 1) that are the subject of this paper. We... |
| Tipo: Text |
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| Ano: 1970 |
URL: http://archimer.ifremer.fr/doc/1970/publication-3146.pdf |
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