CONTENTS
Flora index
Fauna index
guide to the mangroves of singapore
Molluscs
Peter K L Ng and N Sivasothi (editors)
 
Common nerite
Siput timba Tekuyong timba
Nerita lineata

Family Neritidae


One of the commonest herbivorous snails in the mangroves and monsoon drains, N. lineata grazes algae at night during low tide.
close-up of shell
Nerita lineata, shell width 2 cm

close-up of shell and eggs
Nerita lineata, shell laying
egg capsules (white discs
about 3 mm diameter)
several climbing up a tree trunk
Nerita lineata on
Avicennia tree trunk
They are usually inactive during the day, and often stay above the water during high tide in crevices. Such behaviour appears to be an adaptation against predation by crabs and possibly, fish.

Having a hard, calcareous operculum is another defense strategy.
Flattened disc-like whitish egg capsules each containing more than 30 eggs are laid on hard surfaces. The eggs hatch into swimming veliger larvae.

<<Back to molluscs
What is mangrove?
Introduction

The Ecosystem

Abiotic
Biotic

Value
Intro
Products
Indirect uses
Potential uses

About Mangroves
in Singapore

History
Mangroves to visit
Conservation
 
From "A Guide to Mangroves of Singapore", Peter K. L. Ng and N. Sivasothi (editors)
Volume 1: The Ecosystem and Plant Diversity and Volume 2: Animal Diversity
Authors: Kelvin K. P. Lim, Dennis H. Murphy, T. Morgany, N. Sivasothi, Peter K. L. Ng,
B. C. Soong, Hugh T. W. Tan, K. S. Tan & T. K. Tan
BP Guide to Nature Series published by the Singapore Science Centre, sponsored by British Petroleum
2001 Raffles Museum of Biodiversity Research, The National University of Singapore & The Singapore Science Centre