The study of reproductive behavior and growth of Caspian Sea Amphipod: (Pontogammarus maeoticus)
Amphipods collected from the southern coasts of Caspian Sea (Jefrood beach) were transferred to laboratory along with sediment from the same area. Samples were maintained in controlled laboratory condition at temperature of 2510oC, salinity of 9± 0.5 ppt and a 12 hrs. light - dark regime. The average period spent in precopula stage was about 2.6±0.91 days and embryonic development took about 8.5 ±1.05 days. The fecundity was estimated as the number of fertilized eggs existing in brood pouch of each female (14.125). First precopula was observed after about 40 days of birth. To study the effect of feed composition on growth, Gammarus of similar size were fed by composite food of (fish-potato), (fish-bread) , (fish-leaf), (leaf-potato), (leaf-bread) and (breadpotato). At the end of 6th week the head of all specimens were measured. The result of statistical analysis showed significant difference between the treatments (p0.05). The combination of potato-bread was found to be the most suitable food for Gammarus.
| Main Authors: | , , |
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| Format: | article biblioteca |
| Language: | Persian |
| Published: |
2016
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| Subjects: | Biology, Iran, Caspian Sea, Amphipoda, Reproduction, Growth, Feeding, Pontogammarus maeoticus, Behavior, Fish, |
| Online Access: | http://hdl.handle.net/1834/39393 |
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