Species Diversity of Aquatic Fauna in Seagrass at Rockgarden Village, Rayong Province
Keywords:
Species diversity, Aquatic fauna, Seagrass, Rockgarden VillageAbstract
The diversity of aquatic fauna such as fish, shrimp and crab behind Rockgarden Village in Kleang District, Rayong Province by surveying and collecting samples were in two stations of different habitat types i.e. inside and outide seagrass. The collection sampling of aquatic fauna using small beach embankment carried out 3 times in November 2016, January and March 2017 and three replications in each time. The samples were collected by dragging net with 2 mm mesh size at 1-1.2 m of a depth level. The total faunal species comprised
24 species from 20 families, 5 orders and 2 classes as Actinopterygii in fish group with 4 orders i.e. Perciformes (13 families, 17 genera and 16 species), Syngnathiformes (1 family, 1 genera and 1 species), Atheriniformes (1 family, 1 genera and 1 species) and Tetraodontiformes (2 families, 2 genera and 2 species) and Malacostraca in crab and shrimp with 1 order as Decapoda (3 families, 4 genera and 4 species). The 22 species (18 fish species, 3 crab species and 1 shrimp species) were found inside seagrass while 15 species (11 fish species, 3 crab species and 1 shrimp species) were found outide seagrass. The fish group was the most abundance and then was the crab and shrimp group. Family of fish which is the most abundance in this area was Siganidae. The diversity index of
aquatic fauna was inside seagrass as 1.042 and outside seagrass as 0.188. This survey indicated that the inside seagrass area was more abundant aquatic fauna than the outside seagrass area and was important in habitat, nursery ground and food source of aquatic fauna.
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