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Table 3 Periods of development and nurse egg consumption times for different species of gastropods

From: Nurse egg consumption and intracapsular development in the common whelk Buccinum undatum (Linnaeus 1758)

Species Temperature (°C) Duration of intracapsular development (days)a Duration of nurse egg consumption (days)a Percentage of development over which nurse eggs are consumed (%) Authors
B. isaotakii 2.5–10.2 200 40 20 Ilano et al. (2004)
B. undatum 8–11 70 28 40 Nasution (2003)
B. undatum 6 133–140 3–7 2–5 Present study
C. dilatata 17 18–26 Up to 26 100 Chaparro and Paschke (1990)
Hexaplex (Trunculariopsis) trunculus 22–24 49 35 71 Lahbib et al. (2010)
L. dirum 12 84–98 7–21 8–20 Rivest (1983)
T. geversianus 12–14 112 38 34 Cumplido et al. (2011)
  1. All species included are direct developers
  2. aSome timings have been converted from weeks stated in original study