000 03498nam a2200313 a 4500
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008 150817s19uu xx 00 eng d
040 _cCvSU Main Campus Library
041 0 _aeng
082 0 4 _a639.3
_bY1 2013
100 0 _aYambao, Karizza C.
_eauthor
_919606
245 1 0 _aEndoparasitc worms of culture tilapia (Oreochromis niloticus Linn.) from Laguna lake /
_cby Karizza C. Yambao.
260 0 _aIndang, Cavite :
_bCavite State University- Main Campus,
_c2015.
300 _axiv, 62 pages :
_c28 cm.
_billustrations ;
336 _2rdacontent
_atext
337 _2rdamedia
_aunmediated
338 _2rdacarrier
_avolume
500 _aThesis (BS Biology -- General Biology) Cavite State University
504 _aIncludes bibliographical references.
508 _aCollege of Arts and Science (CAS)
520 3 _aYAMBAO, KARIZZA C. Endoparasitic Worms of Cultured Tilapia (Oreochromis niloticus Linn.) from Laguna Lake. Undergraduate Thesis, Bachelor of Science in Biology, Major in General Biology, College of Arts and Sciences, Cavite State University, Indang, Cavite. April 2013. Adviser: Ms. Michele T. Bono This research was conducted to determine the level of parasitism among cultured tilapia from Laguna Lake; identify the isolated parasites in cultured fishes; characterize the appearance of cultured fishes with parasites; assess the effect of parasitism on the morphological characteristics of cultured fishes; distinguish chemical characteristics of water such as pH, TDS and DO where fishes are cultured; correlate the level of parasitism with the chemical characteristics of the environment and determine the incidence of parasitism among infected cultured fishes. A total of 90 cultured tilapia samples from three municipalities along Laguna Lake, namely: Calamba, San Pedro and Muntinlupa, were examined microscopically for the presence of intestinal parasites. Fifty-eight (64.44%) of these were infested. The the incidence of parasitism was higher in Muntinlupa (27.78%) than in San Pedro (20.00%) and Calamba (16.67%). Sampling was done from September to November 2012. Parasites recovered belong to Phylum Acanthocephala under genus Acanthosentis. Parasitism significantly changed the morphological characteristics of tilapia like stunted fins, pale gills, pale skin, damaged intestine and damaged liver. The length of parasitized tilapia is significantly affected by the chemical characteristics of the water such as pH, TDS and DO. The level of damage is significantly aggravated by the changes in the chemical characteristics of water. The pH level affects stunted fins, pale gills, damaged intestine and damaged liver, while other symptoms are not affected by pH. All morphological symptoms are not dependent on TDS. However, as TDS values become extreme, stunted fins and damaged intestines become more evident. On the other hand, pale gills, and damaged liver are affected by the DO of water. Incidence of parasitism is significantly affected by the chemical characteristics of water.
541 _cSubmitted copy to the University Library.
_d07/27/2015
_eT-5727
650 0 _aTilapia
_99187
690 _91672
_aBachelor of Science in Biology
_xGeneral Biology
700 _aBono, Michele T.
_91597
_eadviser
856 _uhttp://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=d9e536c812f88bb32ed918ea343dc207
_yClick here to view thesis abstract and table of contents
942 _2ddc
_cMAN
999 _c9314
_d9314