Environmental factors affecting the population size and morphology of golden apple snail (Pomacea canaliculata) in the rice fields of Dasmariñas, Cavite, Philippines/ Maria Earlie Rein B. Badiang, Dave Williams R. Buitizon, Roan Mae V. Domingo, Miguel Vincent R. Labo, and Karl Dominic B. Tiongson. --

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Badiang, Maria Earlie Rein B [author ]

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TextPublication details: Manila: Technological University of the Philippines, 2023.Description: vii, 193pages: 29cm. +1 CD ROM (3/4in.)Content type:

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BTH GF 41 B33 2023

Dissertation note: College of Science.-- Bachelor of Science in Environmental Science: Technological University of the Philippines, 2023. Summary: The study aimed to determine the water, soil and sediment, and air quality and their relationship to the abundance of Golden Apple Snails (Pomacea canaliculata) in the rice fields and watercourses of Barangay Salitran I, Dasmariñas, Cavite. Anthropogenic activities in the barangay were also determined using a survey questionnaire and interviews. Five-months sampling was conducted from November 2022 to March 2023. Two sites were established: Site 1 (rice fields) for soil and snail sampling and Site 2 (watercourses) for water, sediment, and snail sampling. Grab and composite sampling method was done in the collection of samples used for the analysis of the physicochemical and bacteriological properties of water. Zigzag sampling and three-point sampling methods were conducted to collect soil used to analyze the physicochemical properties of soil and sediment respectively. Atmospheric conditions of air including wind velocity, air temperature and humidity were analyzed on-site, while precipitation data were obtained online. A size of 1 m2 quadrat was prepared for the collection of the snails. Biometric analysis was done by measuring the shell height, shell width, shell length, and body weight. Based on the results, anthropogenic activities revealed that fishing, bathing, throwing of garbage, household waste disposal, and excreting are the human-environment interactions at the site. Physicochemical parameters of water are within the allowable limit set by the DENR under Class C water except for dissolved oxygen, biochemical oxygen demand and phosphate. Water quality was considered deteriorated in all sampling months. The study collected 862 golden apple snails during the five-months sampling in both sites with 822 in Site 1 and 40 in Site 2. Biometric parameters of golden apple snails range from 7.31–23.38 mm for shell height, 7.91–26.65 mm for shell width, 11.17–38.07 mm for shell length, and 0.32–10.3 g for body weight. Pearson r correlation coefficient test revealed significant relationships with a very high correlation between the abundance of golden apple snails and parameters such as pH (r = -.900, p = .037) and biochemical oxygen demand (r = .958, p = .042). Keywords: Golden Apple Snail, Environmental Factors, Rice Fields, Population Size, Biometrics.

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Item type	Current library	Shelving location	Call number	Copy number	Status	Notes	Date due	Barcode
Bachelor's Thesis COS	TUP Manila Library	Thesis Section-2nd floor	BTH GF 41 B33 2023 (Browse shelf(Opens below))	c.1.	Not for loan	For library use only		BTH0005318

Thesis (undergraduate)

College of Science.-- Bachelor of Science in Environmental Science: Technological University of the Philippines, 2023.

Includes bibliography.

The study aimed to determine the water, soil and sediment, and air quality and
their relationship to the abundance of Golden Apple Snails (Pomacea canaliculata) in the
rice fields and watercourses of Barangay Salitran I, Dasmariñas, Cavite. Anthropogenic
activities in the barangay were also determined using a survey questionnaire and
interviews. Five-months sampling was conducted from November 2022 to March 2023.
Two sites were established: Site 1 (rice fields) for soil and snail sampling and Site 2
(watercourses) for water, sediment, and snail sampling. Grab and composite sampling
method was done in the collection of samples used for the analysis of the
physicochemical and bacteriological properties of water. Zigzag sampling and three-point
sampling methods were conducted to collect soil used to analyze the physicochemical
properties of soil and sediment respectively. Atmospheric conditions of air including
wind velocity, air temperature and humidity were analyzed on-site, while precipitation
data were obtained online. A size of 1 m2 quadrat was prepared for the collection of the
snails. Biometric analysis was done by measuring the shell height, shell width, shell
length, and body weight. Based on the results, anthropogenic activities revealed that
fishing, bathing, throwing of garbage, household waste disposal, and excreting are the
human-environment interactions at the site. Physicochemical parameters of water are
within the allowable limit set by the DENR under Class C water except for dissolved
oxygen, biochemical oxygen demand and phosphate. Water quality was considered
deteriorated in all sampling months. The study collected 862 golden apple snails during
the five-months sampling in both sites with 822 in Site 1 and 40 in Site 2. Biometric
parameters of golden apple snails range from 7.31–23.38 mm for shell height, 7.91–26.65
mm for shell width, 11.17–38.07 mm for shell length, and 0.32–10.3 g for body weight.
Pearson r correlation coefficient test revealed significant relationships with a very high
correlation between the abundance of golden apple snails and parameters such as pH (r =
-.900, p = .037) and biochemical oxygen demand (r = .958, p = .042).

Keywords: Golden Apple Snail, Environmental Factors, Rice Fields, Population Size,
Biometrics.

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