Breeding performance of Macrobrachium rosenbergii in captivity
The key factor in success of a Macrobrachium hatchery is to yield maximum number of larvae with minimum number of brooders. Suitable environmental conditions were provided and the breeding performance of females of M. rosenbergii was observed. A total number of 140 females brought from wild were used for this purpose. Each female was tagged and given a code number which made it possible to record the gestation period, interbreed period, number of breeding and larval yield of individual female during each breeding. Females were found to breed six times during the ten months duration. Of the total females studied, 99.12 % bred once, while only 2.16 % females bred six times in a total span of ten months. The average number of larvae decreased successively from first to fourth breeding. The average interbrood period was minimum between the first and second breeding and maximum between the fourth and fifth breeding. The highest average larval yield of 25,428 was recorded in the first breeding, the lowest of 4,596 in the fourth breeding. The possible reasons for variations in interbrood period and larval yield are discussed.
| Main Authors: | , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
1996
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| Subjects: | Aquaculture, Biology, Macrobrachium rosenbergii, prawns, breeding performances, captivity, |
| Online Access: | http://hdl.handle.net/1834/32369 |
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