|
|
|
|
|
| De Verdal, Hugues; Vandeputte, Marc; Pepey, Elodie; Vidal, Marie-odile; Ouedraogo, C; Canonne, Marc; D'Cotta, Helena; Baroiller, Jean Francois; Baras, E; Chatain, Beatrice. |
| The present study aimed to develop nondestructive methods to accurately follow the growth of fish larvae and post-larvae. European sea bass (Dicentrarchus labrax) aged 71-100 days post fertilization (dpf; 20-419 mg) and Nile tilapia (Oreochromis niloticus) aged 14 dpf (10-25 mg) were used as model species. Several measurements were performed on digital pictures of larvae to model body weight. Using body surface area, contour, length and depth, it was possible to estimate accurately the body weight of young European sea bass and Nile tilapia (r² of 0.98 and 0.95, respectively). |
| Tipo: Text |
Palavras-chave: Image analysis; Body weight; Surface area; European sea bass; Nile tilapia. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00205/31619/30045.pdf |
| |
|
|
| Colleter, Julie; Penman, David J.; Lallement, Stephane; Fauvel, Christian; Hanebrekke, Tanja; Osvik, Renate D.; Eilertsen, Hans C.; D'Cotta, Helena; Chatain, Beatrice; Peruzzi, Stefano. |
| Androgenesis is a form of uniparental reproduction leading to progenies inheriting only the paternal set of chromosomes. It has been achieved with variable success in a number of freshwater species and can be attained by artificial fertilization of genetically inactivated eggs following exposure to gamma (gamma), X-ray or UV irradiation (haploid androgenesis) and by restoration of diploidy by suppression of mitosis using a pressure or thermal shock. The conditions for the genetic inactivation of the maternal genome in the European sea bass (Dicentrarchus labrax L.) were explored using different combinations of UV irradiation levels and durations. UV treatments significantly affected embryo survival and generated a wide range of developmental abnormalities.... |
| Tipo: Text |
|
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00239/34996/33531.pdf |
| |
|
|
|
