Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei

The occurrence of stunted growth in Litopenaues vannamei culture causing large size variation in harvested shrimps which may lead to huge profit loss. Despite causing concerns to farmers, detailed information of stunted growth in L. vannamei in relationship to its growth and Vibrio composition was l...

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Main Author:	Rocelene Veraann Rukimin
Format:	Thesis
Language:	English English
Published:	2022
Subjects:	QK504-(638) Cryptogams
Online Access:	https://eprints.ums.edu.my/id/eprint/40515/1/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/40515/2/FULLTEXT.pdf
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id	my-ums-ep.40515
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spelling	my-ums-ep.405152024-09-13T02:17:33Z Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei 2022 Rocelene Veraann Rukimin QK504-(638) Cryptogams The occurrence of stunted growth in Litopenaues vannamei culture causing large size variation in harvested shrimps which may lead to huge profit loss. Despite causing concerns to farmers, detailed information of stunted growth in L. vannamei in relationship to its growth and Vibrio composition was limited. Normal and stunted growth shrimp were collected from shrimp ponds in Tuaran, Malaysia. Further investigation of the length-weight relationship and Vibrio variation between normal and stunted growth shrimp were conducted. Statistical analysis showed that size variations were present in all age groups between normal shrimps and stunted shrimps. The relationship between the length and weight was calculated using the equation W = aLb. The regression coefficient (b value) for normal shrimp was 2.92 which not significantly less than 3.00 indicating isometric growth pattern. Meanwhile, positive allometric growth pattern was observed in stunted growth shrimp with b value of 3.41. The coefficient of correlation (r value) of normal shrimp and stunted shrimp was 0.95 and 0.94, respectively. No significant difference was found regarding the total bacteria count and the total Vibrio count between normal and stunted growth shrimp. However, the tests result revealed that Vibrio isolates obtained from stunted shrimp showed higher variation of phenotypic characteristics compared to isolates from normal shrimp. The finding in this study also indicates that stunted growth shrimp might have more diverse and complex bacterial variation than the normal shrimp. This present study managed to provide information on the size difference and length-weight relationship of normal and stunted growth L. vannamei. Therefore, this opens up the opportunity to conduct more research to find out the possible cause of stunted shrimp problems. 2022 Thesis https://eprints.ums.edu.my/id/eprint/40515/ https://eprints.ums.edu.my/id/eprint/40515/1/24%20PAGES.pdf text en public https://eprints.ums.edu.my/id/eprint/40515/2/FULLTEXT.pdf text en validuser masters University Malaysia Sabah Borneo Marine Research Institute
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English English
topic	QK504-(638) Cryptogams
spellingShingle	QK504-(638) Cryptogams Rocelene Veraann Rukimin Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei
description	The occurrence of stunted growth in Litopenaues vannamei culture causing large size variation in harvested shrimps which may lead to huge profit loss. Despite causing concerns to farmers, detailed information of stunted growth in L. vannamei in relationship to its growth and Vibrio composition was limited. Normal and stunted growth shrimp were collected from shrimp ponds in Tuaran, Malaysia. Further investigation of the length-weight relationship and Vibrio variation between normal and stunted growth shrimp were conducted. Statistical analysis showed that size variations were present in all age groups between normal shrimps and stunted shrimps. The relationship between the length and weight was calculated using the equation W = aLb. The regression coefficient (b value) for normal shrimp was 2.92 which not significantly less than 3.00 indicating isometric growth pattern. Meanwhile, positive allometric growth pattern was observed in stunted growth shrimp with b value of 3.41. The coefficient of correlation (r value) of normal shrimp and stunted shrimp was 0.95 and 0.94, respectively. No significant difference was found regarding the total bacteria count and the total Vibrio count between normal and stunted growth shrimp. However, the tests result revealed that Vibrio isolates obtained from stunted shrimp showed higher variation of phenotypic characteristics compared to isolates from normal shrimp. The finding in this study also indicates that stunted growth shrimp might have more diverse and complex bacterial variation than the normal shrimp. This present study managed to provide information on the size difference and length-weight relationship of normal and stunted growth L. vannamei. Therefore, this opens up the opportunity to conduct more research to find out the possible cause of stunted shrimp problems.
format	Thesis
qualification_level	Master's degree
author	Rocelene Veraann Rukimin
author_facet	Rocelene Veraann Rukimin
author_sort	Rocelene Veraann Rukimin
title	Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei
title_short	Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei
title_full	Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei
title_fullStr	Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei
title_full_unstemmed	Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei
title_sort	comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei
granting_institution	University Malaysia Sabah
granting_department	Borneo Marine Research Institute
publishDate	2022
url	https://eprints.ums.edu.my/id/eprint/40515/1/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/40515/2/FULLTEXT.pdf
_version_	1811770521632636928

Comparative study on growth and vibrio variation between normal and stunted growth in pond- cultured whiteleg shrimp, litopenaeus vannamei

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