Spawning season, fecundity and Lm 50% of the Caspian Sea prawn (Palaemon adspersus) in the coastal waters of Guilan Province
The spawning season, fecundity and Lm50% of the Caspian Sea prawn (Palaernon adspersus) were investi4ated in the coastal waters of Guilan province. A monthly sampling was conducted using a bottom trawl with mesh size 3 mm in cod end in areas 0-5 and 5-10 meters deep during the year 2002. Mean total length, carapace length and weight of ovigerous female of Palaemon adspersus were 51.95+3.1mm, 13.95±1.9mm and 2.742±0.58g (X ± SD). Minimum and maximum total length of ovigerous specimens were 37 and 59.3mm with a weight 1.002 and 4.145 grams respectively. We found that the spawning season of Palaenion adspersus begins in April and ends in September with a peak in June. Mean fecundity of the species was I994.5±506.6. The size at which 50% of females are mature was estimated to be 51.27min total length.
| Main Authors: | , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Persian |
| Published: |
2005
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| Subjects: | Palaemon adspersus, Ovigerous, Spawning, Fecundity, |
| Online Access: | http://hdl.handle.net/1834/12256 |
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| Summary: | The spawning season, fecundity and Lm50% of the Caspian Sea prawn (Palaernon adspersus) were investi4ated in the coastal waters of Guilan province. A monthly sampling was conducted using a bottom trawl with mesh size 3 mm in cod end in areas 0-5 and 5-10 meters deep during the year 2002. Mean total length, carapace length and weight of ovigerous female of Palaemon adspersus were 51.95+3.1mm, 13.95±1.9mm and 2.742±0.58g (X ± SD). Minimum and maximum total length of ovigerous specimens were 37 and 59.3mm with a weight 1.002 and 4.145 grams respectively. We found that the spawning season of Palaenion adspersus begins in April and ends in September with a peak in June. Mean fecundity of the species was I994.5±506.6. The size at which 50% of females are mature was estimated to be 51.27min total length. |
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