Effects of microalgal diets on larval growth and survival of Paphia malabarica chemnitz

Abstract

The e¡ects of food availability on the larval growth and survival of Paphia malabarica were studied in two experiments by feeding the larvae with six algal diets. Newly hatched larvae of P. malabarica were fed with six di¡erent marine microalgae species, singly and in a combination of two species. The best growth was with Isochrysis galbana and Nannochloropsis salina as a single species of diet. The nutritional value of single-species diets was in the order of N. salina, I. galbana, Dicrateria inornata, Chaetoceros calcitrans,Tetraselmis gracilis and Dunaliella salina. Of the mixtures tested, 50% I. galbana/50% N. salina supported growth and metamorphosis equivalent to those of the I. galbana control.

Atlantic surfclam connectivity within the Middle Atlantic Bight: Mechanisms underlying variation in larval transport and settlement

“…Comprehensive information on larval food supply is not available for the MAB; hence the model was run under the assumption that food supply did not limit larval growth. Larvae are variously affected by periods of suboptimal food (e.g., Moran and Manahan, 2004;Powell et al, 2002;Przeslawski and Webb, 2009) and this can influence survival and location of settlement because larval growth frequently may be food-limited (Bos et al, 2006;Gireesh and Gopinathan, 2008;Olson and Olson, 1989). Thus, our simulations under this assumption represent results under optimal food conditions in the MAB.…”

Evaluation of two spawning induction methods and effect of stocking density and microalgal diet composition on larval growth and survival of Pacific clam, Asaphis violascens (Forsskål, 1775)

“…Survival values after 10 days (pediveliger stage) are satisfactory and comparable to other reports on bivalve larviculture, like in Mu. edulis (Oliva et al, 2014), Paphia malabarica (Gireesh & Gopinathan, 2008), Clinocardium nuttallii (Liu et al, 2009), and Pa. generosa (Liu, Pearce, McKinley, & Forster, 2016). Further research is needed to investigate possibilities of other microalgal combinations and preferential ingestion of different algae by Pacific clam at different developmental stages.…”

“…Stocking density, quantity, and nutritional quality of the diet are among the most significant biotic factors to be considered in larviculture, they are closely related to growth and survival and are relatively easy to manipulate (Gireesh & Gopinathan, 2008; Goldberg, 1989; Riisgard, 1988). The influence of stocking density on larval growth and survival has been evaluated in several clam species (Liu, Gurney‐Smith, Beerens, & Pearce, 2010; Yan, Zhang, & Yang, 2006).…”