First record of a-sexual reproduction by fission in Holothuria (lessonothuria) verrucosa (Selenka, 1867) from coastal waters of Karachi, Pakistan.
Yazarlar (4)
Quratulan Ahmed
Qadeer Mohammad Ali
Nurzafirah Mazlan
Prof. Dr. Levent BAT Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale)
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| Dergi Adı | International Journal of Environment and Geoinformatics | ||
| Dergi ISSN | 2148-9173 | ||
| Dergi Tarandığı Indeksler | DOAJ, Index Copernicus, OAJI, Scientific Indexing Service, Journal Factor, Google scholar | ||
| Makale Dili | İngilizce | Basım Tarihi | 01-2018 |
| Cilt / Sayı / Sayfa | 5 / 1 / 29–36 | DOI | – |
| Makale Linki | http://dergipark.gov.tr/ijegeo | ||
| UAK Araştırma Alanları |
Hidrobiyoloji
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| Özet |
| An experiment of a-sexual reproduction by fission was conducted on sea cucumber, Holothuria (Lessonothuria) verrucosa (Selenka, 1867) for 98 days. Anterior fission was observed on Day 1 with the formation of fission on the body of the sea cucumber. Initial length of 14 cm and weight of 21 g was measured at Day 1 in an aquarium under laboratory condition. Complete fission was observed on Day 7 of experiment by formation of 2 specimens; A and P. Initial length and weight for 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 first observation of the formation of anal pore. Tentacles started to form on specimen P on Day 34. Complete formation of anus on specimen A was seen on the 98th day of experiment with final weight of 3.84 g and length of 4.6 cm. Large growth of tentacle was also seen on Day 98 of the experiment with a final weight of the specimen P as 17.56 g and length as 9.7 cm. |
| Anahtar Kelimeler |
