Effect of temperature on cheliped regeneration and surviving rate in fiddler crab (Uca sp.)
The goal of this investigation is to evaluate the chela regeneration abilityof the U. sp. by removing of one and both cheliped and its impacts on the survival rate ofcrabs. The effect of temperature variation on restoration of chela and survival rate of crabwas also examined. Total 65 males (carapace width = 6.5 to 18 mm) were used in twotreatments, first; enlarged chela removed (N=27), second; both (enlarged and small) chelaremoved (N=27) and control (N=10). The crabs were nurtured since 38 days after theoperation of declawing. The regenerated chela morphology was significantly differentfrom original chela. The regenerated chela length and width were evaluated significantlydecrease (p <0.001) from original chela. The removal of one or both chela does not effecton the survival rate of crabs. However, the low temperature was a significant factor forinhabiting the regeneration process and survival rate of crabs. The highest regenerationrate (63%)was assessed before temperature decrease, indicated that the regeneration mayaccelerate in a warm environment. However, after a decrease in temperature highestmortality (22%) was scrutinized, and specified that the survival rate may reduce in coldenvironments. The crab survival rate do not affected by type of treatment (one and bothchela removed), but typically affected by cold environment.
| Main Authors: | , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2012
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| Subjects: | Biology, Declawing, fiddler crabs, handedness, mortality regeneration, effect of temperature., |
| Online Access: | http://hdl.handle.net/1834/40768 |
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