Table 5. — Seasonal production 

 (number per 1,000 m J per 

 season) of lobster larvae col- 

 lected off East Beach calculated 

 using technique of Scarratt 

 (1964). 







Year 





Stage 



1977 





1978 



I 



22.8 





4.7 



II 



4.8 





1.7 



III 



2.0 





1.3 



IV 



0.4 





2.3 



Total 



30.0 





10.0 



Table 6. — Comparison of lobster larvae observations from 1976 through 1979 

 along a transect in Block Island Sound. 



Parameter 



'1976 



1977 



1978 



'1979 



First larvae 











observed 



27 May' 



31 May 



6 June 



23 May 



Highest station 











value observed 











(/1,000 m 1 ) 



65.7 



20.81 



21.42 



21.3 



Peak larval 











abundance 











(/1,000m') 











average of all 











stations, 











surface 



37.2 



7.79 



4.78 



18.7 



Date of peak 











larva] 











abundance 



18 June' 



14, 28 June 



5. 12 July 





Relative 











abundance by 











stage (over 











season) 



1I>I>1V>III 



I>1I>III>IV 



IV>i>Il>III 



1>II>III 



Highest station 











I 



nearshore 



offshore 



offshore 



offshore 



II 



nearshore 



offshore 



offshore 



offshore 



HI 



nearshore 



offshore 



offshore 



offshore 



IV 



nearshore 



offshore 



nearshore 



not seen 



Total 



nearshore 



offshore 



offshore 



offshore 



Highest lime 











of day 



night 



day 



day 



not 

 sampled 



Collection 











method 



neuslon 



Tucker 



Tucker 



neuslon 



'Marine Research Inc. 1977. Charlestown 

 April-August 1976. Vol. 2. Submitted to 

 Turnpike Rd., Westborough, MA01581. 



'Sampling discontinued 1 1 June 1979. 



'Observed in ichihyoplankton samples. 



'First sampling date. 



site study. Five month report. 

 New England Power Co., 20 



LITERATURE CITED 



BIBB, B. G., R. L. HERSEY, and R. A. MARCELLO, Jr. 



1983. A comparison of lobster larvae sampling using neuston and Tucker nets. 

 U.S. Dep. Commer. NOAA Tech. Rep. NMFS SSRF-775:63-64. 

 CASSIE, R. M. 



1968. Sampling design. In D. J. Tranlner (editor). Reviews on zooplankton 

 sampling methods, p. 105-121. UNESCO Press, Paris. 

 HERR1CK, F. H. 



1911. Natural history of the American lobster. Bull. [U.S.J Bur. Fish. 

 29:149-408. 

 HOPKINS, T. L., R. C. BAIRD, and D. M. MILLIKEN. 



1973. A messenger-operated closing trawl. Limnol. Oceanogr. 18:488- 

 490. 

 HUGHES, J. T., and G. C. MATTHIESSEN. 



1962. Observations on the biology of the American lobster, Homarus 

 americanus. Limnol. Oceanogr. 7:414-421. 

 SCARRATT, D. J. 



1964. Abundance and distribution of lobster larvae [Homarus americanus) 



in Northumberland Strait. J. Fish. Res. Board Can. 21:661-680. 

 1973. Abundance, survival, and vertical and diurnal distribution of lobster 

 larvae in Northumberland Strait, 1962-63, and their relationships with 

 commercial stocks. J. Fish. Res. Board Can. 30:1819-1824. 

 SHERMAN. K., and R. D. LEWIS. 



1967. Seasonal occurrence of larval lobsters in coastal waters of central 

 Maine. Proc. Natl. Shellfish. Assoc. 57:27-30. 

 TEMPLEMAN.W. 



1936. The influence of temperature, salinity, light and food conditions on 

 the survival and growth of the larvae of the lobster (Homarus americanus). 

 J. Biol. Board Can. 2:485-497. 

 1939. Investigations into the life history of the lobster (Homarus ameri- 

 canus) on the west coast of Newfoundland, 1938. Newfoundland Dep. 

 Nat. Resour. Res. Bull. (Fish) 7, 52 p. 

 TEMPLEMAN, W., and S. N. TIBBO. 



1945. Lobster investigations in Newfoundland 1938 to 1941. Newfound- 

 land Dep. Nat. Resour. Res. Bull. (Fish) 16:60-98. 



22 



