期刊名称：International Journal of Environment and Geoinformatics
电子版ISSN：2148-9173
出版年度：2018
卷号：5
期号：1
页码：29-36
DOI：10.30897/ijegeo.353267
语种：English
出版社：IJEGEO
摘要：An experimentof a-sexual reproduction by fission was conducted on sea cucumber, Holothuria(Lessonothuria) verrucosa (Selenka, 1867) for 98 days. Anterior fission wasobserved on Day 1 with the formation of fission on the body of the seacucumber. Initial length of 14 cm and weight of 21 g was measured at Day 1 inan aquarium under laboratory condition. Complete fission was observed on Day 7of experiment by formation of 2 specimens; A and P. Initial length and weightfor A was 4.5 cm and 3.18 g, while P was 9.5 cm and 17.30 g respectively.Increased weight for specimen A was observed on Day 20 with the firstobservation of the formation of anal pore. Tentacles started to form onspecimen P on Day 34. Complete formation of anus on specimen A was seen on the 98thday of experiment with final weight of 3.84 g and length of 4.6 cm. Largegrowth of tentacle was also seen on Day 98 of the experiment with a finalweight of the specimen P as 17.56 g and length as 9.7 cm.
