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Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation

Abstract. For a study of the fecundity of Macrobrachium rosenbergii, a total of 117 berried females were sampled from ponds. Fecundity was found to vary from 1216 to 89747 eggs for prawns measuring 9.0cm to 15.8cm total length and weighing 6.22 to 45.80g. The relationship between fecundity (EN) and...

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Main Authors: Jee, Ang Kok, Kok, Law Yean
Format: Article
Language:English
Published: John Wiley & Sons 1991
Online Access:http://psasir.upm.edu.my/id/eprint/114042/1/114042.pdf
http://psasir.upm.edu.my/id/eprint/114042/
https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2109.1991.tb00488.x
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spelling my.upm.eprints.1140422024-12-02T03:53:16Z http://psasir.upm.edu.my/id/eprint/114042/ Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation Jee, Ang Kok Kok, Law Yean Abstract. For a study of the fecundity of Macrobrachium rosenbergii, a total of 117 berried females were sampled from ponds. Fecundity was found to vary from 1216 to 89747 eggs for prawns measuring 9.0cm to 15.8cm total length and weighing 6.22 to 45.80g. The relationship between fecundity (EN) and total length (TL) was found to be EN = 0.001876 TL6.3617. The average egg number/g total body weight for prawns having orange, yellow and grey eggs was 1132.7 ± 484.1,766.4 ± 524.3 and 745.5 ± 487.2, respectively, a decrease of 32.3% when orange eggs became yellow and 34.3% when they turned grey. This decrease was probably due to unfertilized eggs dropping off and some eggs being eaten by the brooders during the incubation period. Egg numbers/g egg weight were found to be 11360.1 ± 1642.1,10715.7 ± 2725.3 and 8634.0 ± 1892.3 for orange, yellow and grey eggs, respectively. When compared to orange eggs, yellow eggs were slightly heavier (6%), but grey eggs were significantly heavier by 31.6%. The increase in the weight of the grey eggs can be explained by the elongation of fully formed organs and appendages by about 17 days post fertilization. John Wiley & Sons 1991 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/114042/1/114042.pdf Jee, Ang Kok and Kok, Law Yean (1991) Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation. Aquaculture Research, 22 (1). pp. 1-6. ISSN 1355-557X; eISSN: 1365-2109 https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2109.1991.tb00488.x 10.1111/j.1365-2109.1991.tb00488.x
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Abstract. For a study of the fecundity of Macrobrachium rosenbergii, a total of 117 berried females were sampled from ponds. Fecundity was found to vary from 1216 to 89747 eggs for prawns measuring 9.0cm to 15.8cm total length and weighing 6.22 to 45.80g. The relationship between fecundity (EN) and total length (TL) was found to be EN = 0.001876 TL6.3617. The average egg number/g total body weight for prawns having orange, yellow and grey eggs was 1132.7 ± 484.1,766.4 ± 524.3 and 745.5 ± 487.2, respectively, a decrease of 32.3% when orange eggs became yellow and 34.3% when they turned grey. This decrease was probably due to unfertilized eggs dropping off and some eggs being eaten by the brooders during the incubation period. Egg numbers/g egg weight were found to be 11360.1 ± 1642.1,10715.7 ± 2725.3 and 8634.0 ± 1892.3 for orange, yellow and grey eggs, respectively. When compared to orange eggs, yellow eggs were slightly heavier (6%), but grey eggs were significantly heavier by 31.6%. The increase in the weight of the grey eggs can be explained by the elongation of fully formed organs and appendages by about 17 days post fertilization.
format Article
author Jee, Ang Kok
Kok, Law Yean
spellingShingle Jee, Ang Kok
Kok, Law Yean
Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation
author_facet Jee, Ang Kok
Kok, Law Yean
author_sort Jee, Ang Kok
title Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation
title_short Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation
title_full Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation
title_fullStr Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation
title_full_unstemmed Fecundity changes in Macrobrachium rosenbergii (de Man) during egg incubation
title_sort fecundity changes in macrobrachium rosenbergii (de man) during egg incubation
publisher John Wiley & Sons
publishDate 1991
url http://psasir.upm.edu.my/id/eprint/114042/1/114042.pdf
http://psasir.upm.edu.my/id/eprint/114042/
https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2109.1991.tb00488.x
_version_ 1817844698095550464
score 13.223943

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