Reproductive biology of introduced Sailfin catfish, Pterygoplichthys pardalis (Pisces: Loricariidae) in Peninsular Malaysia
| Autor: | Simon Kumar Das, Abdullah Samat, Shukor Md. Nor, Mazlan Abd. Ghaffar, Fatimah Md. Yusoff, A. L B Magalhaes, Aziz Arshad |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
biology 010604 marine biology & hydrobiology Loricariidae media_common.quotation_subject fungi Zoology Aquatic Science Pterygoplichthys pardalis biology.organism_classification Fecundity 010603 evolutionary biology 01 natural sciences Brood Fishery Reproductive biology Reproduction Sex ratio Catfish media_common |
| Zdroj: | Indian Journal of Fisheries. 63 |
| ISSN: | 0970-6011 |
| DOI: | 10.21077/ijf.2016.63.1.44937-05 |
| Popis: | Reproductive biology of the introduced sailfin cat fish Pterygoplichthys pardalis in the Langat River of peninsular Malaysia was studied. Fish samples were collected monthly from Langat River during March 2003 - June 2004. The sex ratio observed for P. pardalis was female-biased with 1: 2. Gonadal maturity stage is achieved at 12.5 cm standard length (SL) for males and 13.0 cm SL for females. This species appeared to have continuous spawning that peaked when water levels were high between September and January. Egg sizes were found to reach as large as 3.3 mm in dia in the ovary; suggesting that they spawn in batches. Fecundity varied from 1297 to 18791 numbers per brood, proportional to individual size. Data obtained from this study indicate that the introduced sailfin cat fish has successfully colonised in Langat River in Malaysia. |
| Databáze: | OpenAIRE |
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