Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jembe.2010.11.008
Title: Predator-induced changes in fluted giant clam (Tridacna squamosa) shell morphology
Authors: Neo, M.L.
Todd, P.A. 
Keywords: Giant clam
Morphological plasticity
Predator effluent
Stone crab
Tridacna squamosa
Issue Date: 31-Jan-2011
Citation: Neo, M.L., Todd, P.A. (2011-01-31). Predator-induced changes in fluted giant clam (Tridacna squamosa) shell morphology. Journal of Experimental Marine Biology and Ecology 397 (1) : 21-26. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jembe.2010.11.008
Abstract: Predator-induced defences have been demonstrated in numerous marine molluscs, but never in giant clams (Bivalvia: Tridacnidae). Water-borne cues from the predatory crab Myomenippe hardwickii were tested for their ability to induce changes in the shell morphology, strength and growth of juvenile fluted giant clams, Tridacna squamosa. Specimens were maintained in effluent from tanks holding 'fed crabs', 'starved crabs' and 'no crabs'. To ensure changes were due to predator cues only, food for the crabs was provided ex situ and measures were taken to minimise the prey signal. After 182 days, MANOVA identified differences in various shell parameters relating to shape and strength. CDA showed a clear change in overall morphology, with strong separation among the three treatments. Effluent from 'fed crabs' had a greater influence than effluent from 'starved crabs', possibly because the starved crabs were perceived as weaker, and thus less risk. Significantly more clams died in 'fed crabs' treatments (25%) and 'starved crabs' treatments (30%) compared to the 'no crabs' control (0%). This degree of mortality has not been observed in similar experiments elsewhere and represents a new challenge to interpret. We suggest that the cause is unlikely to be related to the plastic responses, but rather a result of some form of crab-associated contaminant. © 2010 Elsevier B.V.
Source Title: Journal of Experimental Marine Biology and Ecology
URI: http://scholarbank.nus.edu.sg/handle/10635/101440
ISSN: 00220981
DOI: 10.1016/j.jembe.2010.11.008
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

17
checked on Oct 14, 2021

WEB OF SCIENCETM
Citations

15
checked on Oct 14, 2021

Page view(s)

117
checked on Oct 14, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.