Open AccessInfluence of algal cell size on filtration and ingestion rates during different larval stages of the yellow neck clam, Paphia malabarica Chemnitz
Author(s) -
RAGHAVAN G.
Publication year - 2011
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/j.1365-2095.2010.00785.x
Subject(s) - biology , veliger , ingestion , algae , zoology , isochrysis galbana , larva , botany , filtration (mathematics) , tetraselmis , food science , biochemistry , statistics , mathematics
Filtration rate and ingestion rate of different stages of Paphia malabarica larvae ( D ‐shape, (80 μm), Umbo (120 μm) and veliger (180 μm)) were determined in relation to feeding on various micro algae. The micro algae tested were Nannochloropsis salina , Isochrysis aff. galbana , Dicrateria inornata , Tetraselmis gracilis and Chaetoceros calcitrans at 5 or 10 × 10 3 cells mL −1 . Both filtration and ingestion rate of micro algae tested were increased with increasing larval size; however, at all larval stages, C . calcitrans resulted in lower filtration and ingestion rate. Of the algal diets tested, P . malabarica larvae showed greatest filtration rate and ingestion rate with N . salina . Maximum filtration rate for N . salina was 15.7, 26.3 and 33.9 μL h −1 and highest ingest rate was 15, 92 and 177 cells larva −1 h −1 in D shape larvae, umbo and pediveliger, respectively. Filtration rate and ingestion rate of N . salin a were always higher than those other algal species tested because of its small cell size (2 μm).