Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia

Food and feeding habits, diet composition and population parameters of Acetes japonicus in the estuarine waters of Tanjung Dawai, Kedah Peninsular Malaysia were studied between June 2008 and May 2009. The total catches of Set Bag Net (SBN)were constituted of three major fauna groups and they were Ac...

Full description

Saved in:

Bibliographic Details
Main Author:	Abdulaziz A, Alsayed Amani
Format:	Thesis
Language:	English English
Published:	2011
Subjects:	Acetes - Feeding and feeds - Kedah Sergestidae - Feeding and feeds - Kedah Shrimp populations - Kedah
Online Access:	http://psasir.upm.edu.my/id/eprint/27235/1/FP%202011%2040R.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.27235
record_format	uketd_dc
spelling	my-upm-ir.272352014-01-20T03:04:26Z Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia 2011-05 Abdulaziz A, Alsayed Amani Food and feeding habits, diet composition and population parameters of Acetes japonicus in the estuarine waters of Tanjung Dawai, Kedah Peninsular Malaysia were studied between June 2008 and May 2009. The total catches of Set Bag Net (SBN)were constituted of three major fauna groups and they were Acetes shrimps (89%), juvenile fishes (9%) and non- Acetes shrimps (2%). The annual mean percentage composition of sergestid shrimp comprising of A. japonicus, A. vulgaris and A. indicus were 89%, 7% and 4% espectively. Although seven species of juvenile fishes were recorded together in the bag net from the study area, the abundance was however very low (9%). Feeding habits of sergestid shrimps A. japonicus were done by examining the stomach contents of 164 specimens during one year study period. Analysis on the percentage of numerical abundance (Ci) showed that plant matter (28.18%) and crustacean appendages (18.70%) as the two highest values amongst the eight categories of feeding items. In addition, percentage frequency of occurrence (Fpi) values of phytoplankton, zooplankton, algae, plant matter, appendages of crustacean, debris, unidentified items and sand-mud were 3.45%, 7.05%, 5.07%, 27.44%, 17.42%, 15.80%, 8.94% and 19.81% espectively. From the diet composition found in the stomach, it is revealed that A. japonicus is probably omnivorous in feeding habit. Population parameters of male and female A. japonicus were studied using the monthly length frequency data by FiSAT software to evaluate the mortality rates and its exploitation level. The sex ratio (males: females) was found to be 1: 0.94. Asymptotic length (L∞) was 25.20 mm and 28.88 mm for male and female respectively. Growth co-efficient (K) for males and females was estimated at 1.80 yr-1 and 1.30 yr-1 respectively. Total mortality (Z) was calculated at 5.98 yr-1and 4.44 yr-1 for male and female of A. japonicus correspondingly. Natural mortality (M) was 2.82 yr-1 and 2.19 yr-1 for male and female shrimps. While fishing mortality (F) was 3.16 yr-1 and 2.25 yr-1 for male and female respectively. Exploitation level (E) for male and female of A. japonicus was calculated at 0.53 and 0.51. The exploitation level was slightly over (E > 0.50) the optimum level of exploitation (P = 0.50). The stock of A.japonicus was found to be slightly over exploited in Tanjung Dawai coastal waters. Acetes - Feeding and feeds - Kedah Sergestidae - Feeding and feeds - Kedah Shrimp populations - Kedah 2011-05 Thesis http://psasir.upm.edu.my/id/eprint/27235/ http://psasir.upm.edu.my/id/eprint/27235/1/FP%202011%2040R.pdf application/pdf en public masters Universiti Putra Malaysia Acetes - Feeding and feeds - Kedah Sergestidae - Feeding and feeds - Kedah Shrimp populations - Kedah Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Acetes - Feeding and feeds - Kedah Sergestidae - Feeding and feeds - Kedah Shrimp populations - Kedah
spellingShingle	Acetes - Feeding and feeds - Kedah Sergestidae - Feeding and feeds - Kedah Shrimp populations - Kedah Abdulaziz A, Alsayed Amani Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia
description	Food and feeding habits, diet composition and population parameters of Acetes japonicus in the estuarine waters of Tanjung Dawai, Kedah Peninsular Malaysia were studied between June 2008 and May 2009. The total catches of Set Bag Net (SBN)were constituted of three major fauna groups and they were Acetes shrimps (89%), juvenile fishes (9%) and non- Acetes shrimps (2%). The annual mean percentage composition of sergestid shrimp comprising of A. japonicus, A. vulgaris and A. indicus were 89%, 7% and 4% espectively. Although seven species of juvenile fishes were recorded together in the bag net from the study area, the abundance was however very low (9%). Feeding habits of sergestid shrimps A. japonicus were done by examining the stomach contents of 164 specimens during one year study period. Analysis on the percentage of numerical abundance (Ci) showed that plant matter (28.18%) and crustacean appendages (18.70%) as the two highest values amongst the eight categories of feeding items. In addition, percentage frequency of occurrence (Fpi) values of phytoplankton, zooplankton, algae, plant matter, appendages of crustacean, debris, unidentified items and sand-mud were 3.45%, 7.05%, 5.07%, 27.44%, 17.42%, 15.80%, 8.94% and 19.81% espectively. From the diet composition found in the stomach, it is revealed that A. japonicus is probably omnivorous in feeding habit. Population parameters of male and female A. japonicus were studied using the monthly length frequency data by FiSAT software to evaluate the mortality rates and its exploitation level. The sex ratio (males: females) was found to be 1: 0.94. Asymptotic length (L∞) was 25.20 mm and 28.88 mm for male and female respectively. Growth co-efficient (K) for males and females was estimated at 1.80 yr-1 and 1.30 yr-1 respectively. Total mortality (Z) was calculated at 5.98 yr-1and 4.44 yr-1 for male and female of A. japonicus correspondingly. Natural mortality (M) was 2.82 yr-1 and 2.19 yr-1 for male and female shrimps. While fishing mortality (F) was 3.16 yr-1 and 2.25 yr-1 for male and female respectively. Exploitation level (E) for male and female of A. japonicus was calculated at 0.53 and 0.51. The exploitation level was slightly over (E > 0.50) the optimum level of exploitation (P = 0.50). The stock of A.japonicus was found to be slightly over exploited in Tanjung Dawai coastal waters.
format	Thesis
qualification_level	Master's degree
author	Abdulaziz A, Alsayed Amani
author_facet	Abdulaziz A, Alsayed Amani
author_sort	Abdulaziz A, Alsayed Amani
title	Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia
title_short	Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia
title_full	Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia
title_fullStr	Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia
title_full_unstemmed	Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia
title_sort	feeding preferences and population parameters of sergestid shrimps, acetes japonicus kishinouye in the coastal waters of kedah, malaysia
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Agriculture
publishDate	2011
url	http://psasir.upm.edu.my/id/eprint/27235/1/FP%202011%2040R.pdf
_version_	1747811580431564800

Feeding preferences and population parameters of sergestid shrimps, Acetes japonicus kishinouye in the coastal waters of Kedah, Malaysia

Similar Items