| Journal: | The biologist |
| Database: | PERIÓDICA |
| System number: | 000367923 |
| ISSN: | 1994-9073 |
| Authors: | Matzunaga, Cecilia1 Passuni, Giannina1 Pino, José1 Iannacone, José2 |
| Institutions: | 1Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas, Lima. Perú 2Universidad Nacional Federico Villarreal, Facultad de Ciencias Naturales y Matemática, Lima. Perú |
| Year: | 2010 |
| Season: | Ene-Jun |
| Volumen: | 8 |
| Number: | 1 |
| Pages: | 35-42 |
| Country: | Perú |
| Language: | Español |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| Spanish abstract | Se describe el desarrollo embrionario de Helisoma peruvianum (Broderip, 1832) (Pulmonata: Planorbidae) bajo condiciones de ambiente controlado. Se mantuvieron 1250 embriones localizados en 31 capsulas (promedio = 40,32) a 20 ± 1ºC y 24 h continuas de luz artificial. Se reconocieron 7 estadios embrionarios: 2 células, 4 células, mórula, blástula, gástrula, trocófora “veliger” y juvenil. La mayor mortalidad se produce a las 192 h post puesta en el estadio juvenil. Se obtuvieron diferencias significativas en el número de huevos por cápsula en comparación a H. trivolvis |
| English abstract | The embryonic development stages of Helisoma peruvianum (Broderip, 1832) (Pulmonata: Planorbidae) reared under controlled conditions is described. 1 250 embryos located in 31 capsules (Mean = 40. 32) were maintained at 20 ± 1ºC, 24 h of continued artificial light. 7 embryonic stages were recognized: 2 cells, 4 cells, morulae, blastula, gastrula, trochophore "veliger" and juvenile. The greatest mortality occurs at 192 h after being placed on the juvenile. The number of eggs per capsule had a significant difference in comparison to H. trivolvis |
| Disciplines: | Biología |
| Keyword: | Moluscos, Reproducción y desarrollo, Caracoles de agua dulce, Desarrollo embrionario, Helisoma peruvianum, Planorbidae |
| Keyword: | Biology, Molluscs, Reproduction and development, Freshwater snails, Embryo development, Helisoma peruvianum, Planorbidae |
| Full text: | Texto completo (Ver HTML) |
