Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia

The study was aimed to investigate some aspects of the biology and population dynamics of dominant fish species, namely Oreochromis mossambicus (Peter) , Puntius gonionotus (Bleeker) , Puntius bramoides (Cuvier & Valenciennes) , Mysracoleucus marginatus (Cuvier & Valenciennes) , and Chan...

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Main Author:	Kartaminhardja, Endi Setiadi
Format:	Thesis
Language:	English English
Published:	1993
Subjects:	Fisheries - Indonesia - Java Central
Online Access:	http://psasir.upm.edu.my/id/eprint/11788/1/FPSS_1993_4_A.pdf
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id	my-upm-ir.11788
record_format	uketd_dc
spelling	my-upm-ir.117882011-09-07T01:46:46Z Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia 1993-06 Kartaminhardja, Endi Setiadi The study was aimed to investigate some aspects of the biology and population dynamics of dominant fish species, namely Oreochromis mossambicus (Peter) , Puntius gonionotus (Bleeker) , Puntius bramoides (Cuvier & Valenciennes) , Mysracoleucus marginatus (Cuvier & Valenciennes) , and Channa striatus Bloch in the Kedungombo Reservoir, Central Java, Indonesia. Gillnet sampling in six sub-fishing areas of the reservoir once a month for a 12 month period and catch assessment survey (CAS) at three fish landing sites were carried out. Length-based methods for fish population study were adopted. Results of the study showed that the dominant species were distributed all over the reservoir, except C. striatus which were distributed in a restricted area. The riverine species were concentrated in the upper portion of the reservoir. The species richness and diversity of the fish community were high in the upper portion of the reservoir. Based on the values of the index of preponderance, O. mossambicus and M. marginatus were classified as planktivores; P. gonionotus and P. bramoides as herbivores; and C. striatus as a carnivore. Food competition occurred between O. mossambicus and M. marginatus, and between P. gonionotus and P. bramoides. However, the food competition among other species was considered low. O. mossambicus reproduced at intervals of about three months and their reproduction occurred extensively during high water level . Reproduction of P. gonionotus, P. bramoides and M. marginatus started from December until March when the water level of the reservoir began to rise. In C. striatus reproduction occurred during high water level . Fecundity of O. mossambicus, P. gonionotus, P. bramoides, M. marginatus and C. striatus were between 178- 1,574; 25 ,980-86,916; 42 ,454-99 , 659; 4 , 702- 15 , 681 ; and 2 , 585- 12 , 880, respectively . The fecundity was highly correlated with total length , body weight, and gonad weight and it increased with the increase in total length , body weight and gonad weight. Fisheries - Indonesia - Java, Central 1993-06 Thesis http://psasir.upm.edu.my/id/eprint/11788/ http://psasir.upm.edu.my/id/eprint/11788/1/FPSS_1993_4_A.pdf application/pdf en public masters Universiti Pertanian Malaysia Fisheries - Indonesia - Java, Central Faculty of Fisheries English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Fisheries - Indonesia - Java Central
spellingShingle	Fisheries - Indonesia - Java Central Kartaminhardja, Endi Setiadi Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia
description	The study was aimed to investigate some aspects of the biology and population dynamics of dominant fish species, namely Oreochromis mossambicus (Peter) , Puntius gonionotus (Bleeker) , Puntius bramoides (Cuvier & Valenciennes) , Mysracoleucus marginatus (Cuvier & Valenciennes) , and Channa striatus Bloch in the Kedungombo Reservoir, Central Java, Indonesia. Gillnet sampling in six sub-fishing areas of the reservoir once a month for a 12 month period and catch assessment survey (CAS) at three fish landing sites were carried out. Length-based methods for fish population study were adopted. Results of the study showed that the dominant species were distributed all over the reservoir, except C. striatus which were distributed in a restricted area. The riverine species were concentrated in the upper portion of the reservoir. The species richness and diversity of the fish community were high in the upper portion of the reservoir. Based on the values of the index of preponderance, O. mossambicus and M. marginatus were classified as planktivores; P. gonionotus and P. bramoides as herbivores; and C. striatus as a carnivore. Food competition occurred between O. mossambicus and M. marginatus, and between P. gonionotus and P. bramoides. However, the food competition among other species was considered low. O. mossambicus reproduced at intervals of about three months and their reproduction occurred extensively during high water level . Reproduction of P. gonionotus, P. bramoides and M. marginatus started from December until March when the water level of the reservoir began to rise. In C. striatus reproduction occurred during high water level . Fecundity of O. mossambicus, P. gonionotus, P. bramoides, M. marginatus and C. striatus were between 178- 1,574; 25 ,980-86,916; 42 ,454-99 , 659; 4 , 702- 15 , 681 ; and 2 , 585- 12 , 880, respectively . The fecundity was highly correlated with total length , body weight, and gonad weight and it increased with the increase in total length , body weight and gonad weight.
format	Thesis
qualification_level	Master's degree
author	Kartaminhardja, Endi Setiadi
author_facet	Kartaminhardja, Endi Setiadi
author_sort	Kartaminhardja, Endi Setiadi
title	Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia
title_short	Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia
title_full	Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia
title_fullStr	Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia
title_full_unstemmed	Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia
title_sort	some aspects of the biology and population dynamics of the dominant fish species in kedungombo reservoir, central java, indonesia
granting_institution	Universiti Pertanian Malaysia
granting_department	Faculty of Fisheries
publishDate	1993
url	http://psasir.upm.edu.my/id/eprint/11788/1/FPSS_1993_4_A.pdf
_version_	1747811263169167360

Some Aspects Of The Biology And Population Dynamics Of The Dominant Fish Species In Kedungombo Reservoir, Central Java, Indonesia

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