912 



Jacot, Arthur. 1920. 



On the marine Mollusca of Staten Island, N.Y. Nautilus 33: 111-115. 



Collections were made along the southeast shore of Staten Is. Great Kills 

 Bay was formed by a sand-spit dropped by Lower New York Bay waters as they 

 struck the current of the Kills which flow out at this point. At the base 

 of the spit is a small influx of sand where the waters of the Bay have been 

 cutting across recently, and a new fauna was being introduced, which 

 included young of Venus mercenaria. Earlier works on Staten Is. mollusks 

 are reviewed, with no mention of V. mercenaria. It is concluded that 

 expansion of the city had led to a decrease in marine fauna. - J.L.M. 



913 



Jacot, Arthur P. 1921. 



Some marine molluscan shells of Beaufort and vicinity. J. Elisha Mitchell 

 Sci. Soc. 36: 129-145. 



Venus mercenaria Linne is listed as abundant, inside barrier island in mud 

 near surface between tides. V. campechiensis is reported as common inside. 

 One specimen of Venus campeahiensis quadrata Dall was taken, also inside 

 the barrier island. V. mercenavia notata was recorded from this area by 

 Coues (1871) , abstracted elsewhere in this bibliography. - J.L.M. 



914 



Jaffe, M. J. 1970. 



Acetylcholine: A new plant hormone regulating phytochrome mediated responses 

 in mung bean roots. Plant Physiol. 46 (suppl) : 2. 



Presence of the hormone in mung beans was demonstrated with standard 

 ventricle assay of Venus mercenaria, and analytical procedures. ACh couples 

 photoconversion of phytochrome to various cellular and morphogenic responses. 

 - J.L.M. 



915 



Jaffe, M. J. 1970. 



Evidence for the regulation of phytochrome -mediated processes in bean roots 

 by the neurohumor, acetylcholine. Plant Physiol. 46(6): 768-777. 



Meroenaria mercenaria ventricle was used to assay content of acetylcholine 

 (ACh) in seedlings of mung bean, Phaseolus aureus. The ventricle was 

 ligated with lengths of cotton thread at auricular junctures and removed 

 surgically. One thread was fastened at the bottom of a perfusion chamber 

 and the other to the end of a lever which operated an electronic strain 

 gauge in circuit with a multiple gain recorder. It was not uncommon for a 

 ventricle to beat regularly for 7 hr after a recovery period of about 1/2 hr. 

 The effect of ACh is to inhibit ventricular beat, and this response is fairly 

 specific for ACh. The ventricle was perfused with 5 uM eserine sulphate, 

 which makes M. mercenaria even more sensitive to ACh or benzoquinonium 

 sulphate, which desensitizes it to ACh, as well as atropine sulphate. 

 (Abstracter's note: these are the author's words, which are ambiguous.) 

 The ventricle of M. mercenaria proved to be sensitive to authentic ACh and 

 to bean root extracts, and it was very much more sensitive than abdominis 

 rectus muscle of frog. Later, root extract was proven by other methods to 

 contain ACh. - J.L.M. 



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