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Fish Fingerlings Assemblages in Coastal Area of Trang Province
Kunwadee Srisuan Research Methodology Program
Asst. Prof. Dr. Sarawuth Chesoh ; Advisor, Assoc. Prof. Dr. Apiradee Lim ; Co‐advisor, Dr. Nurin Dureh ; Co‐advisor 2 Outline
1. Introduction
2. Objective
3. Methodology
4. Results
5. Conclusions 3 What is fish fingerlings? • Fish fingerlings is a stage of fish or aquatic animal that has reached the stage where the fins can be extended and where scales have started developing throughout the body. The fish is typically about the size of a finger.
Figure from Department of fisheries 4 objective
• To reduce 41 families of fish fingerlings in Coastal Area of Trang Province into a small group by using factor analysis 5 Methodology
• Data were obtained from Prince of Songkla University, Pattani campus; aquatic ecological database (Chesoh, 2016).
• Study period from September 2015 to August 2016 in four sampling sites that represent four districts in Palian, Hat Samran, Kantang and Sikao.
• The data consist of 41 different families of fish fingerlings. 6 Sample Collection: Fish Fingerling
• Fish fingerlings were collected by using bongo nets and plankton nets. • Identified species in laboratory following the guideline by Delsman(1922), Leis and Rennis (1983), Leis and Carson–Ewart (2000). • The species were counted and the unit of density of fish fingerling is individuals per one thousand cubic meters of water volume. Study area 7 Trang Province, Thailand
st4
st3
st2 st1 8 st1 Study area (con.) st1: Yong star beach region Palian District, Muddy beach and mangrove forest st2: Ta-Sea Harbor region st2 Hat Samran District, Muddy sand beach and sea grass st3: Hat Yoa harbor Li Bong Island Kantang st3 District, Muddy beach and mangrove forest
st4: Pak Meng Beach, Sikao District, Muddy sand beach, rocky beach, mangrove forest and shrimp farm. st4 Fish fingerling data were collected monthly from September 2015 to August 2016.
12 months x 4 site = 48 observations 9 Factor analysis Factor analysis is data reduction statistical technique for investigating interrelationships among the original variables (fish fingerling density) in an effort to find a new set of variables (factors) that are less than the number of original variables (Dillon & Goldstein, 1984).
Factor score is estimated as linear combinations of the original variables as follows: