Some problems in the embryogenesis of Habrotrocha Rosa Donner 1949

✍ Scribed by K. Plasota; M. Plasota

• Book ID: 104615340
• Publisher: Springer
• Year: 1980
• Tongue: English
• Weight: 207 KB
• Volume: 73
• Category: Article
• ISSN: 1573-5141
• DOI: 10.1007/bf00019421

✦ Synopsis

Several parameters connected with the biology of H. rosa were investigated under laboratory conditions: average lie span (20 days) divided into three characteristic stages, mean number of eggs laid (30 eggs) and average time of egg development (31.5 hours). Ontogenesis was studied (until the stage of early organogenesis) and a spiral type of cleavage and epibolic gastrulation were observed. The paper also presents data on the origin of the digestive system and sex cells.