spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

Right arrow Help viewing high resolution images
Right arrow Return to article

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.


Figure 1


Fig. 1. (A). Open habitat of giant kelp forest in shallow (10–15 m depth), coastal waters offshore of Point Loma, San Diego, California (photo credit: Eric Hanauer). Bar, 25 cm. (B) Within this forest, adult red abalone aggregate underneath ledges and in crevices among rocky reefs. Hydrodynamic measurements characterized the physical properties of adult microhabitats and the open forest environment (photo credit: Eric Hanauer). Bar, 15 cm. (C) Each adult male or female spawns gametes into the sea via excurrent tremata, small holes in the shell that connect the mantle cavity (exit site for reproductive products) and surrounding ocean. The epipodium (lateral lobe of the foot) contains many small tentacles that are used in sensing water motion; two large cephalic tentacles (not shown) protrude from the head (to the left, arrow) and function primarily in olfaction (photo credit: L. Ignacio Vilchis). Bar, 1.0 cm. (D) Spawning of sperm by a single adult male. Propulsive forces generated by the muscular contractions of its foot ultimately produce a gamete jet, or plume (photo credit: Larry Friesen). Bar, 0.5 cm.





Right arrow Return to article