Behaviorally Mediated Larval Transport in Upwelling Systems
Figure 5
Representative horizontal and vertical distributions of larvae of nearshore benthic crustaceans during the daytime off Bodega Bay, northern California. (a) Barnacle larvae (Balanus glandula, B. crenatus, and Semibalanus cariosus) completed development <6 km from shore by occurring deep in the water column throughout development, (b) porcelain crab larvae (Petrolisthes cinctipes, Pet. eriomerus, Pet. manimaculus, Pachycheles rudis, Pac. pubescens) completed development <6 km from shore by occurring deep in the water column early in development and rising to the surface as postlarvae (ROVM), (c) pea crab larvae (Fabia subquadrata) mostly completed development on the inner shelf (<13 km) with early larval stages occurring near the surface close to shore and later stages descending in the water farther from shore (OVM, (d) shore crab larvae (Pachygrapsus crassipes, Hemigrapsus nudus, H. oregonensis) mostly completed development on the inner shelf (<13 km) with early larval stages occurring in the upper water column close to shore, late stages descending in the water farther from shore (OVM), and postlarvae rising to the surface (ROVM), and (e) Cancer crab larvae (C. productus, C. oregonensis, and C. magister) migrated to the outer shelf late in development by primarily remaining in the upper water column throughout development. Different patches of larvae in a plot either represent different species or the same species collected on different cruises. Mean sample depths are depicted by white dots. Modified from Morgan et al. [9].
