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25 results for “Besançon”
Figure 5 in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 5. – Development of Z. asper before hatching. A: Embryo at 4 days; B: Embryo at 12 days; C: Hatching at 20 days.
Figure 6 in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 6. – Development of Z. asper after hatching. A: Larvae post-hatching; B: Pelagic larvae at 5 days; C: Benthic phase at 15 days; D: Juvenile phase at 40 days.
Figure 10 in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 10. – Annual thermal cycle for different life phases of Z. asper. The "gametogenesis" phase starts when temperatures fall in September and continues throughout the winter but slows down in November when the temperature reaches 5°C. This period of time at 5°C, indicated as "vernalization" on the graph, lasts from November to February. The duration of this period is very important because it directly conditions the success of the reproduction. Rapid and regular rising of temperatures to 10°C triggers reproduction from the beginning of March and continues until the end of April.
Figure 3. – A in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 3. – A: Growth curve of the Z. asper group born in captivity (2008) descended from wild Z. asper from the Beaume. At 2 years old, some fish could not be sexed but all Z. asper were mature at 3 years and monitoring of both sexes was possible. At 5 years old, females are significantly longer than males. B: Quantity of food per week for 20 asper (Beaume 2008) in 2015. When the temperature reaches 14 to 15°C in May, Z. asper consume 3 times the quantity of food eaten at 5 to 10°C. From 20°C in July, consumption levels are more than 5 times higher than in the winter.
Figure 9. – A in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 9. – A: Comparison of incubation results as a function of cold period length from 30 to 120 days. More than 64,000 eggs were collected during these trials and all egg clutches were accurately counted at four key moments of the incubation process: on laying, at 10 days, at transfer for hatching and at hatching. From the first development stages, egg mortality declines as the length of the winter cold period increases. B: Clutch by clutch detail of the incubation survival rate of eggs for batches of "Beaume" broodstock subjected to 3 different temperature periods. The egg clutches produced during the same experiment are identified by an identical colour. Within the same group, survival rate results sometimes varied widely. The hatching rates for broodstock subjected to 90 days of vernalization are the most variable. This wide variability suggests that the 90-day period of cold temperatures creates a boundary, which determines whether reproduction is successful or not. C: Variation in hatching rate (mean and standard deviation) as a function of vernalization period length. Unlike those from the "Beaume" stock, Z. asper of "Durance" stock we used in 2016 and 2017 (captured in 2015 and 2016), were replaced between the two years. The hatching rate varies in accordance with the duration of the cold period experienced by the broodstock during the winter. For the "Beaume" broodstock, Kruskal-Wallis tests show that comparisons between the results obtained with the 120-day period and the other periods are significant (p <0.05). The length of the vernalization period clearly has an influence on the hatching rate. This test was also applied to data from the experiments involving both sets of stock and 120-day periods. As this test was not significant (p = 0.07), it demonstrates that both sets of stock reacted similarly to this vernalization period.
Operating diagram of hatching module, this module consists of two clearly separated sections, each consisting of two long tanks (2 × 0.2 × 0.2 m) designed to accommodate hatching boxes, a filtration tank and an independent water circulation pump with a cooling unit and UV sterilizer. This allows simultaneous monitoring of 16 batches of eggs. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Operating diagram of hatching module, this module consists of two clearly separated sections, each consisting of two long tanks (2 × 0.2 × 0.2 m) designed to accommodate hatching boxes, a filtration tank and an independent water circulation pump with a cooling unit and UV sterilizer. This allows simultaneous monitoring of 16 batches of eggs.
Operating diagram of larvae hatching module, this installation was used to determine the optimum larvae load during the rearing process and provided additional space for rearing several thousand larvae. It consists of nine 20-litre tanks with a glass panel along the front. They are fitted with an inlet supplying filtrated water at a rate of 100 l/h and an individual air inlet. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Operating diagram of larvae hatching module, this installation was used to determine the optimum larvae load during the rearing process and provided additional space for rearing several thousand larvae. It consists of nine 20-litre tanks with a glass panel along the front. They are fitted with an inlet supplying filtrated water at a rate of 100 l/h and an individual air inlet.
Operating diagram of hatching module in Zoug jars, this system consists of a 300-litre temperature-controlled isothermal enclosure containing 10 one-litre Zoug jars, each able to accommodate several hundred eggs. An ascending current holds the eggs in suspension and carries the larvae to the surface. Another bottle connected to this device collects the larvae. The water circulating in the jars is independent of that used in the filtration circuit. A cooling unit and UV sterilizer complete the installation. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Operating diagram of hatching module in Zoug jars, this system consists of a 300-litre temperature-controlled isothermal enclosure containing 10 one-litre Zoug jars, each able to accommodate several hundred eggs. An ascending current holds the eggs in suspension and carries the larvae to the surface. Another bottle connected to this device collects the larvae. The water circulating in the jars is independent of that used in the filtration circuit. A cooling unit and UV sterilizer complete the installation.
Operating diagram of IF incubator, two identical incubators were used for eggs that were already sorted. They are made up of an isothermal enclosure and contain three tiers (100 × 60 × 17 cm). The water circulating in each tier comes from the same filtration, cooling and sterilisation device. As a result, the eggs placed in the different tiers are subject to the same temperature regime. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Operating diagram of IF incubator, two identical incubators were used for eggs that were already sorted. They are made up of an isothermal enclosure and contain three tiers (100 × 60 × 17 cm). The water circulating in each tier comes from the same filtration, cooling and sterilisation device. As a result, the eggs placed in the different tiers are subject to the same temperature regime.
Bottom of DR1 tank, the sides of the module are fitted with glass panels which allow natural light from a window to enter the tank, and the observer to view the behaviour of the broodstock. This device ensures easy viewing and checking of the broodstock, facilitates management of feeding and allows effective monitoring of reproduction. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Bottom of DR1 tank, the sides of the module are fitted with glass panels which allow natural light from a window to enter the tank, and the observer to view the behaviour of the broodstock. This device ensures easy viewing and checking of the broodstock, facilitates management of feeding and allows effective monitoring of reproduction.
Top view of DR1/DR2 double riffle, each section contains a spawning ground made up of eight gravel-filled trays, a rest area. The "double riffle" was designed to accommodate two groups from 25 to 50 specimens of broodstock in strictly identical conditions. The spawning grounds are equipped with waterproof, motion-sensing cameras with infrared night vision, connected to a 1000 Gb recorder. The diurnal and nocturnal activities of the two groups can therefore be simultaneously recorded over a long period. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Top view of DR1/DR2 double riffle, each section contains a spawning ground made up of eight gravel-filled trays, a rest area. The "double riffle" was designed to accommodate two groups from 25 to 50 specimens of broodstock in strictly identical conditions. The spawning grounds are equipped with waterproof, motion-sensing cameras with infrared night vision, connected to a 1000 Gb recorder. The diurnal and nocturnal activities of the two groups can therefore be simultaneously recorded over a long period.
Operating diagram of DR1/DR2 double riffle; it consists of two independent sections (DR1 and DR2), each containing 630 litres of water and measuring 2.5 x 0.6 m. Each section contains a filtration system separate from the fish, a cooling unit and an ultraviolet sterilizer. An 80 W UQL lamp completes the lighting of the module lit during the day. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Operating diagram of DR1/DR2 double riffle; it consists of two independent sections (DR1 and DR2), each containing 630 litres of water and measuring 2.5 x 0.6 m. Each section contains a filtration system separate from the fish, a cooling unit and an ultraviolet sterilizer. An 80 W UQL lamp completes the lighting of the module lit during the day.
Operating diagram of the incubator, two tiered modules contain six independent incubators. Three shallow hatching are (220 × 60 × 17 cm) stacked on top of each other to create a compact assembly in which each tier functions independently. Eighteen trays covered with eggs can be placed in each tier, allowing the simultaneous incubation of seven to nine lays. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Operating diagram of the incubator, two tiered modules contain six independent incubators. Three shallow hatching are (220 × 60 × 17 cm) stacked on top of each other to create a compact assembly in which each tier functions independently. Eighteen trays covered with eggs can be placed in each tier, allowing the simultaneous incubation of seven to nine lays.
Figure 8 in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 8. – Egg production as a function of age. These results were obtained from the number of eggs laid throughout the breeding season divided by the number of females that laid. The same bloodstocks (born in captivity in 2008) were used for 9 years. The maximum production was obtained at 6 years. The number of females was 17 at the beginning and 2 at the end (Tab. II).
Figure 2. – Z. asper eggs. A in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 2. – Z. asper eggs. A: Mature ovum on the right and immature ovum on the left. B: Extraction of milt, this operation is done first. C: A low pressure from the abdomen towards the anus with the index finger allows the ova to be extracted. D: The yellow colour of the ova is a good indicator of their good quality. E: Water can only be added when everything is well mixed.
Linked collectors and determiners for: Muséum d'histoire naturelle de Besançon.
Natural history specimen data linked to collectors and determiners held within, "Muséum d'histoire naturelle de Besançon". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/f7a4924c-bfd2-4192-990c-c63397d5d852">https://bionomia.net/dataset/f7a4924c-bfd2-4192-990c-c63397d5d852</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/f7a4924c-bfd2-4192-990c-c63397d5d852">https://gbif.org/dataset/f7a4924c-bfd2-4192-990c-c63397d5d852</a>. Formatted as a Frictionless Data package.
Figure 4 in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 4. – Female (in front) with 3 males in the current just before the expulsion of ova.
Figure 7 in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Figure 7. – Health of gills. A: Early signs of mycosis on gills; B: Healthy gills.
Retrospective Descriptive Study of Platelet Transfusion in Patients With Palliative Hematologic Malignancies at the University Hospital of Besançon
ClinicalTrials.gov study NCT03814486. IPD Sharing: UNDECIDED. Countries: 1. Publications: 6.
Epidemiology of ST131 in Besançon University Hospital
ClinicalTrials.gov study NCT02853708. IPD Sharing: NO. Countries: 1. Publications: 4.
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