The arthropod diversity in aquatic ecosystem in Biñan City, Laguna, Philippines

• Main Authors: Silvestre, Mark Louie T., Limbauan, Jaryna O., Bartolata, Ramgie M., Zambrano, Anna Rose C., Bongulto, Kenneth A., Nepacina, Ma. Rejane J., Cabiles, Ma. Monica M., Barrion, Alberto T.
• Format: text
• Published: Animo Repository 2017
• Subjects: Arthropoda—Variation—Philippines—Laguna; Arthropoda—Philippines—Laguna; Biology; Entomology
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/11451
• Institution: De La Salle University

The arthropod diversity in the aquatic ecosystem in De La Salle University – Science and Technology Center, Binan City, Laguna, Philippines was determined to provide additional information on the aquatic macroinvertebrates that can aid in the preservation and monitoring of aquatic habitats. In the study, a total of 711 different arthropods were collected, of which 452 (63.57%) came from river ecosystem and 259 (36.43%) came from river banks. Of the total collection, 702 (98.73%) were insects and 9 (1.27%) were spiders. The diversity index revealed that there is a low arthropod diversity with a range of H1= 1.28-2.47 in the aquatic ecosystem. The river ecosystem has H1=1.28 and the river banks has H1=2.47. The index of dominance (D) in the river is 0.38 and in the river banks is 0.12 and the index of equitability (E) in the river is 0.06 and in the river banks is 0.03. The Sorensen’s Index of Similarity (IS) indicated a low 21.62% (4 families) of taxa commonly shared between the river ecosystem and river banks. The relative densities of each family of arthropods showed the dominance of the species belonging to Gerridae, Veliidae and Culicidae.