. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMOSENSORY RESPONSE IN VENT SHRIMP 75 Second Antenna B 13. 130 1300 [Na2S] (mM) o> (0 c o Q. (/> O DC 0 v jo o> DC -| o-V 10°101102103 [Na2S] (mM) ASW pH10 Control Figure 4. (A) Examples of multiunit nerve response from the second antenna of the shallow-water shrimp Panaeus a:lecus to solutions of Na:S and to control solutions. The experimental procedures used for P. a:lecus are described in (15. 16). See Figure 3A for other details. (B) Steady-state relative responses to concentrations of Na2S and contro
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMOSENSORY RESPONSE IN VENT SHRIMP 75 Second Antenna B 13. 130 1300 [Na2S] (mM) o> (0 c o Q. (/> O DC 0 v jo o> DC -| o-V 10°101102103 [Na2S] (mM) ASW pH10 Control Figure 4. (A) Examples of multiunit nerve response from the second antenna of the shallow-water shrimp Panaeus a:lecus to solutions of Na:S and to control solutions. The experimental procedures used for P. a:lecus are described in (15. 16). See Figure 3A for other details. (B) Steady-state relative responses to concentrations of Na2S and controls. Note the expanded response scale in comparison with Figure 3B. The solid s\ mbol • represents the relative responses to Na:S shown in (A): the other solid symbols represent sulfide responses of the other second antennae tested. The open symbols represent responses to the three control solutions used on the antennal filaments whose sulfide responses are indicated by the corresponding solid symbols, namely, ASW (shown near ). pH 10 (shown at or near 130). and pH 13 (shown at or near 1300). See Figure 3B for other details. the pH of the 130 mM Na2S solution [pH 10, giving a response = ± (n = 4)]. While the second antennae of both vent and shallow water shrimp responded to Na:S. there are major differ- ences between them. First, the axons of P. aitccus re- sponded vigorously to the pH 13 control solution, unlike those of Rimicaris sp. or R Thus, the response to Na:S in P. azlecits was confounded by a sensitivity to high pH. Second, the axons of P. a~teciis responded only for about 40 min after excision, while axons of Rimicaris sp. and R. exociilalu responded repeatedly to sulfide stim- ulation for several hours, and. in one experiment on R. exoculata, for 24 h. Furthermore, sensilla on the second antenna of Rimicaris sp. and R. e.\ociiluta are more nu- merous than those in P. aztcais (1 sensillum/231 /urn of filament circumference) and P. pugio
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
