Some Aspects of Ecology of Wedge Clam, Donax faba Gmelin, 1791 at Bangling Beach, Thepha District, Songkhla Province

Authors

  • Kua Rittiboon
  • Supaporn Fungchonjitt
  • Pimonrat Thongroy
  • Chavapot Chavavongsa
  • Somsak Buatip Faculty of Science and Technology, Prince of Songkla University, Pattani Campus. 181 Chroenpradit Road. T.Rusamilae, Mueng, Pattani Province 94000

Abstract

The study on some aspects of ecology of wedge clam, Donax faba Gmelin, 1791 at Bang Ling beach, Thepha district, Songkhla province, was conducted during June 2017 to January 2018 with three seasonal samplings. This study investigated the morphology, food and physical characteristics of habitats of the clam. The samples were collected at upper tidal zone along 2 kilometers of sandy beach using circular sieve maze size of 12 mm. It revealed that there were 8 types of Wedge clam, Donax faba found in Bang Ling Beach categorized by shell colours and shell patterns as type A, B, C, D, E, F, G and H. The common form was type C, while type H was the rarest. Shell height of the clam ranged from 10.1 – 15.0 mm, except type A and F which were smaller than 10 mm range. The height above 15.0 mm was uncommon in all group and the maximum shell height was 19.2 mm. The shell length ranged from 15.01 – 20.00 mm except type H which was smaller than 15.01 mm and the shell length was larger than 25.01 mm. It was found that in different seasonal sampling, the wedge calm height, length and weight and types of shell (p<0.05). The mean height, length and weight were 11.03 mm, 17.42 mm and 1.02 g, respectively. Diet of wedge clam were mainly phytoplankton in the phylum of Bacillariophyta (91.78%) with the Pleurosigma spp. is the major component (24.31%). Environmental factors which were measured including pH, conductivity, dissolved oxygen and salinity are not different through study period and sandy beach mainly consisting of medium sand particles (0.25 – 0.50 mm).                       Keywords :  wedge clam, Donax faba, Bangling Beach, Thepha

Author Biography

Somsak Buatip, Faculty of Science and Technology, Prince of Songkla University, Pattani Campus. 181 Chroenpradit Road. T.Rusamilae, Mueng, Pattani Province 94000

    

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Published

2019-03-26