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Title Intertidal Microhabitat Preferences of Cerithiidae in Selected Areas of Zamboanga del Norte and Misamis Occidental, Philippines
Posted by Carlo Stephen Moneva
Authors Saliha P. Mamaroba, Carlo Stephen O. Moneva
Publication date 2020/3
Journal International Journal of Biosciences
Volume 16
Issue 3
Pages 157-166
Publisher International Network for Natural Sciences
Abstract Various studies have been concerned with intertidal zones in determining the ecological interaction that produce the diverse groupings of plants and animals. This study was conducted to ascertain microhabitat preferences of Cerithiid species in intertidal areas of Bucana Sicayab and Aliguay Island in Dapitan City, Zamboanga del Norte and in Punta Sulong, Baliangao, Misamis Occidental. Microhabitats and abundance of Cerithiid snails were surveyed using the belt-transect method. Specimens encountered in different microhabitats were collected through hand-picking or hand-digging the substratum. Eight microhabitat types were observed and classified as bedrocks, macroalgae (brown, green and red), muddy sand, reef flats, seagrass beds and tidepools. A total of 14 species of Cerithiids under three genera (Cerithium, Clypeomorus and Psuedovertagus) were identified. Kruskal Wallis test revealed that there is a significant difference in the abundance of Cerithiid species among microhabitat types (p<0.05). Using Cramer’s contingency coefficient test, the microhabitat preference of Cerithiids was determined. Cerithium columna had high preference on flatreefs and tidepool, while Cerithium coralium on muddy sand and Cerithium nodulosum on red algae. High proportion of Clypeomorus bifasciata bifasciata was observed on bedrocks, though it was also numerous in tidepools and muddy sand. Clypeomorus pellucida was more likely to be found on bedrocks and seagrass. Pseudovertagus aluco was observed to be common on seagrass, while Pseudovertagus nobilis on reef flats. In conclusion, Cerithiid species were less numerous in red, brown and green algae, while more numerous in rocks and tidepools to avoid high temperature and desiccation.
Index terms / Keywords Intertidal microhabitats, Cerithium, Clypeomorus, Pseudovertagus