RSS 1.0Annales
Browse by
Les Annales ont été publiées entre 1925 et 1967, ils sont réservées pour les travaux les plus importants avec planches de grand format.
Recent Submissions
-
Contribution à l'étude de la microflore bactérienne de la moule Mytilus galloprovincialis Lmk.Studies have shown that mussels bacteria are essentially isolated from water. Microbiological observation revealed that i) bacteria types are essentially related to environmental location ii) mussels organs that are in contact to water environmental contain the same type of bacteria iii) undigested bacteria inside the digestive tract are growing after modification and this bacterial group named “Gut Group Vibrio” iv) the major type of bacteria isolated are : Acromobater-Flavobacterium-Acinetobacterium-Pseudomonas and Vibrio
-
Etude de quelques sédiments marins actuels récoltés au large des côtes de Tunisie.Material comes from the campaign undertaken by the oceanographic vessel 'PRESIDENT THEODORE TISSIER' ship during 1957-1959 and the dredging of the trawler «DAUPHIN» during 1957-1959. It is composed of 10 mud samples off the coast of Bizerte, Cap Bon, Kelibia and Korba. Gravelly and sandy sediments are confined to a small coastal zone. Rate of carbonate is linked to the depth and the distance from the coast. The carbon/nitrogen ratio increases with depth. Zoogenous contributions seem to be uniform and varies insensitively.
-
Contribution à l'étude de la biologie de quelques Scombridae de l'Atlantique tropico-oriental.Biological studies are conducted from 1946 to 1953 in a tropical Atlantic region (Cap Vert). This study involved relationship of 4 species with their environmental parameters (salinity, temperature). Those species are Neothunnus albacora. Euthynnus alletteratus; Sarda sarda and Cybium tritor. Biological aspects including reproduction, spawning and growth are examined by biometrics investigations. Cybium tritor and Euthynnus alletteratus are frequently present all the year along the coasts of Senegal. Neothunnus albacora: appears only during hot season and Sarda sarda appears only during the cold season. Species, sex and size affect the relative gonad development and lifecycle. Reproduction was studied by Hepatic and gonad somatic index variations. Sexual maturity is reached beyond 3 years for Neothunnus albacora and between 1 and 2 years in the case of Euthynnus alletteratus. It is reached about 1 year age in Cybium tritor and Sarda sarda. Growth is steady in the 4 species.
-
Etude des peuplements des possibilités d’Ostreiculture du lac de Bizerte.Environmental studies are essential to determine the ability to use the lagoon for oysters culture. Environmental results revealed that i) salinity parameter changes during the year. Low salinity in winter (27.5 g/l) because of the discharge of freshwater from the Echkel river and higher salinity in summer (38 g/l) as a result of evaporation ii) most is covered with sediment while coastal areas are covered with plants iii) lower deep lagoon with 12m maximum. Moreover oysters growth studies performed on larvae from different location revealed i) a low growth oysters from La goulette Channel due to high water salinity ii) a rapid growth oysters from Italy only in spring due to high water temperature in summer iii) easy growth and possibility to commercialize the portuguese oysters species.
-
Spermatophores des crustacés décapodes Anomoures et Brachyoures et castration parasitaire chez quelques Pagures.This document is a morphological and histological study of gonads male or spermatophores (as referred in document) and their maturation in some crustacean decapods from the groups Anomoures and Brachyura. It concerns 44 species from the coasts of the English Channel and the Mediterranean, the most common and readily available. This document gives a nice and useful schematization of various shapes and structures of these spermatophores. This paper describes also some cases of parasitic crustacean castration.
-
Contribution à la biométrie, à la biologie et à la physico-chimie de la moule commune (Mytilus galloprovincialis Lmk).This study focuses a better understanding of aquatic organisms and environments in which they grow. The objective is setting a myticulture activity which must be based on a complete knowledge of mussels and its external environments. The interactions of living organisms and their environment must take into account the pH and the nutrients as well as the sensitivity of these organisms to temperature variations, water agitation, dissolved matter in sea water or suspended in water, etc. From all these factors organic matter present in water conditioning nutrition appears as the most important. This study concerns the sexual nature of mussels, data on their shell, resistance of mussels to rapid or nits changes of those parameters of the environment and the body mass. Finally the installation such activity of myticulture in Tunisia is suggested.
-
Observations biologiques sur Penaeus keratburus Forskal.Studies have shown that mussels bacteria are essentially isolated from water. Microbiological observation revealed that i) bacteria types are essentially related to environmental location ii) mussels organs that are in contact to water environmental contain the same type of bacteria iii) undigested bacteria inside the digestive tract are growing after modification and this bacterial group named “Gut Group Vibrio” iv) the major type of bacteria isolated are : Acromobater-Flavobacterium-Acinetobacterium-Pseudomonas and Vibrio.....
-
Bryozoaires marins de Tunisie.This study concerns Bryozoans harvested in 1904 along the Tunisian coasts, the Carbon Cap in Algeria and Tripoli. Samples have obtained from different stations including Ajim, Biane, Bizerte, Cap Carbon, Gulf of Gabes, Djerba, Hammamet, Kerkennah island, Gourine, Sfax, Skhira, Sousse, Tripoli, Tinja, Tunis, and Zarzis. A total of 23 families, 41 genera and 66 species regrouped in 2 orders were classified and reported in presented in this dissertation.
-
Les crustacés comestibles des mers Tunisiennes et leur pêche.This paper concerns twenty species of edible crustaceans landed in Tunisia. Some basic data of their biology, their habitats, fishing techniques and the industries to which they give rise are provided.
-
La tortue c: captures faites sur les côtes tunisiennes (1930-1933) contribution à l’étude anatomique et biologique de l’espèce.Five specimens were captured during the years 1930-1933 at Sidi Daoud, Gabes and Monastir. The Tunisian-eastern coasts are included in the geographic distribution of the specie. Examination of those specimens allowed to provide measurements and weighing useful for comparison, this allows to correct some published exaggerations. The descriptions and photographs indicated anatomical features. Examination of stomach contents has informed us on the life way of the animal (herbivorous and carnivorous). Spawning takes place between August and September.
-
La formation des terminaisons nerveuses dans les ventouses du bras régénéré du céphalopode Octopus vulgaris Lam.The theory of the neurotropism elaborated by Cajal and his team states that the chemical substances emitted by boosted tissues attract the regenerating nervous endings. In order to induce tissue regeneration, a part from the distal arm of eleven Octopus was cut. A regenerate portionof about 1 cm was observed after 1.5-2 months. The distal part of the original arm was then taken and fixed in paraffin. Histological sections revealed that suckers of cephalopods are acting as center of attraction in neurogenesis.
-
Contribution à l'étude des races de thons Thunnus thynnus: caractères biométriques du thon tunisien et considérations sur sa croissance.The study involved 103 tuna specimens caught along the Tunisian coasts during the period between 1923 and 1927. Different morphological parameters have been registered including the size of certain organs (eye, fins, anus and head) and/ or the height of the body, etc. The biological parameters revealed that the Tunisian tuna collected samples were very heterogeneous and do not form a single group. Hence, a comparative study on the spawning at different regions of the Tunisian coast would be useful in order to understand the issue of Tuna migration. Indeed, the differences in fish habitats (growth pattern) have a big impact on the values of the biological parameters and the screening of different fish races. The position of the eye, the fin or the anus on the body of the tuna could indicate if the animal during its travel crosses or not the Gibraltar Strait.
-
Etude sur les barbillons des rougets-barbets (G. Mullus).The study was realized at the Oceanographic Station of Salammbô. It described behaviors of Mullus fuscatus living in aquarium. Fixed tissues of barbells enabled to identify different histological structures. Results indicated that barbels were involved in the sensory life of the red mullet transmitting taste impressions.
-
Etude complémentaire sur le thon de la Tunisie.La présente étude complète des données précédemment publiées en 1924 dans le Bulletin II de la Station Océanographique de Salammbô. Elle a pour objet la description des caractères spécifiques des thons capturés dans les madragues de la Tunisie. L'objectif principal de l'étude était de comparer la population de thon de l'Atlantique et la Méditerranée. Un total de 94 échantillons qui ont été capturés au cours du piège Sidi Daoud ont été utilisés dans le présent ouvrage. Les investigations sont basées sur les mesures des caractéristiques morphométriques. Observations conclu que le thon tunisien constitue en fait un groupe homogène.
-
Recherches sur les fonds chalutages des côtes de Tunisie: croisière du chalutier 'tanche' en 1924.Cette enquête sur les fonds chalutables de la Tunisie s’est basée sur les observations de l'auteur personnels et ceux de leurs prédécesseurs. Les principales conclusions que l'auteur sont: 1 –Le chalutage devrait être interdit dans les 50 m pour la protection du fonds spongifères. 2 - Le chalutage est productif dans 150 à 200 m en bas de la façade nord, entre la terre et l'île de La Galite. 3. chalutage dans la zone entre Mahdia et le Cap Bon est bon, mais pas rentable pour les navires à fort tonnage Enfin, l'auteur invite les français à prendre part à l'exploitation des éponges et le thon.
