MARC details
| 000 -LEADER |
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| fixed length control field |
03203nam a22003017a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20241126155751.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
241126b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
TUPM |
| Language of cataloging |
English |
| Transcribing agency |
TUPM |
| Modifying agency |
TUPm |
| Description conventions |
rda |
| 050 ## - LIBRARY OF CONGRESS CALL NUMBER |
|---|
| Classification number |
BTH GF 41 |
| Item number |
D66 2024 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Donadillo, John Pierre C. |
| Relator term |
author |
| 245 ## - TITLE STATEMENT |
|---|
| Title |
Toxicity effects of Diethyl Phtalate (DEP) on the freshwater fish Nile Tilapia ( Oreochromis niloticus)/ |
| Statement of responsibility, etc. |
John Pierre C. Donadillo, Deo Angelo B. Navarro, Joshua L. Rosete, and Psalm Danielle S. Torres .-- |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Manila: |
| Name of publisher, distributor, etc. |
Technological University of the Philippines, |
| Date of publication, distribution, etc. |
2024. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
ix, 151pages: |
| Dimensions |
29cm. |
| Accompanying material |
+1 CD-ROM (4 3/4in.) |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| 500 ## - GENERAL NOTE |
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| General note |
Thesis (undergraduate) |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
College of Science .-- |
| Degree type |
Bachelor of Science in Environmental Science: |
| Name of granting institution |
Technological University of the Philippines, |
| Year degree granted |
2024. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
|---|
| Bibliography, etc. note |
Includes bibliography: |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Abstract: Diethyl phthalate (DEP) is considered an emerging synthetic chemical<br/>pollutant utilized as a plasticizer for personal care, insecticides, plastic packaging, and<br/>other plastic products. Detecting these chemicals is important to understand the toxicity<br/>effect of DEP. This study aimed to evaluate the median lethal concentration (LC50) of<br/>DEP on Nile Tilapia (Oreochromis niloticus) fingerlings and assess the behavioral and<br/>morphological changes to DEP and the presence of DEP in Pampanga River in San<br/>Miguel, Bulacan. The acute toxicity was tested to determine the LC50 of the DEP on the<br/>Nile Tilapia (Oreochromis niloticus) fingerlings by static bioassay method using probit<br/>analysis. Fingerlings were exposed to different concentrations (0, 25, 35, 50, and 75 ppm)<br/>of DEP for 96 hours. The lethal concentration 50 value was 48.073 mg/L with a 95%<br/>confidence limit. The Pampanga River has a < 1 μg/L presence of DEP. Fingerlings were<br/>exposed to sub-lethal concentration (1/10 of LC50) that allowed monitoring of their<br/>behavioral and morphological changes within 7 days. The toxicity effects of DEP on Nile<br/>Tilapia (Oreochromis niloticus) are evident even at sub-lethal concentrations to have<br/>behavioral and morphological changes. Fingerlings showed sluggishness, loss of<br/>equilibrium, abnormal movement, and changes in dark skin pigmentation on the dorsal<br/>surface. Fingerlings exposed to DEP showed significantly reduced growth compared to<br/>the control group, with a 46% difference in weight and an 11% difference in length. The<br/>water quality parameters of aquariums were aligned with the BFAR guidelines for the<br/>growth of Nile Tilapia fingerlings. This includes pH ranging from (7.71 to 8.16),<br/>temperature (27.8 °C to 28.1 °C), TDS (84 mg/L to 113 mg/L), salinity (84 mg/L to 113<br/>mg/L), and DO (5.1 mg/L to 7.1 mg/L). This encourages people to be aware of the<br/>adverse effects of pollutants in the Pampanga River, San Miguel, Calumpit, Bulacan,<br/>Philippines. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Aquatic resources |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Water analysis |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Navarro, Deo Angelo B. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Rosetes, Joshua L. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Torres, Psalm Danielle S. |
| Relator term |
author |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Bachelor's Thesis COS |
| Suppress in OPAC |
No |