formerly described as Pomacea haustrum
but is pending revision, Reeve, 1856) (Hayes et al.
Using the offspring of three sympatric whelks: Cominella virgata (one embryo per capsule); Cominella maculosa (multiple embryos per capsule); and Haustrum scobina (multiple embryos per capsule and nurse-embryo consumption), we examined how contrasting reproductive strategies mediate inter- and intraspecific differences in hatchling provisioning.
The third whelk species was the adelphophagic Haustrum scobina, which produces multiple embryos per capsule (SL ~1.
Adams, 1853; Cominella maculosa (Martyn, 1784); and Haustrum scobina (Quoy & Gaimard, 1833) (Fig.
(Reeve, 1858), but may include 2 other species; detritivore; macrophyte and epiphyte feeder, noted from warmer waters, frequently on silty or muddy substrates (pelophile); scattered over the state, but mostly southern (Snake River Plain); often on soft substrates; often lakes and ponds; strongly synanthropomorphic.
Another whelk, Haustrum
haustorum, was rare on wave-exposed shores.
Site selection by a small drilling predator: why does the gastropod Haustrum
baileyanum drill over muscle tissue of the abalone Haliotis rubra?