Gagnon, A. r.nd Jenn-Louis Trenblay 



1948 Station biologiquc du Sr.int -Laurent e'levage dos larves 



de honr.rd. Annie 1947» Rn.pp<, Stat. Biol. St.-Lam'ent 

 1947 (1948). App« no. 3, pp. 49-54, illus. 



In the course of the 1947..5uinncr the biological station offered 

 to repeat the larval lobster rearing as the preceding year. In fact, 

 at the beginning of the 1946 season the work of fitting'-up the rear- 

 ing 'est ablishnent vras completed and allovred the carrying on of arti- 

 ficial lobster rearing. Thenethod in fact has given good results 

 end in 1947 the sane nethod must be applied on a nuch greater scale, 

 that is to say, to raise a number of .-larvae tv;ioe as great. 



Purchase of berried fenales 



The fe^/f tvrenty lobster traps of the biological station v/ere not 

 able to furnish required number of berried feiaales for the piurpose 

 of rearing, \:e have had to purchase frou the outside. Also, thanks 

 to the cooperation of the, fisheries inspectors, I'r m A. -J. Ahier of 

 Anse-aux-Gas cons -and Ifr. J.-i/i. Bourget of Anse-du-Cap, v/e have net 

 the principal fishernen of the neighboring regions. These persons 

 are bound to take care of, in traps prepared for that- purpose, the 

 captiJired egg-bearing feiTiales. At a set hour, \re go to fetch them 

 and bring them to Grande-Riviere. We have taken all the necessary 

 precautions to take care of the females and the eggs in good condit- 

 ion V;rhile transporting theme And vre have endeavored to reduce to a 

 minimiua the time that these fenales must pass out of vrater. For 

 transportation in the truck, the females are placed in large pans 

 and covered T;ith seav/eed. Upon return to the station, they are 

 placed in the tc^nk. 



The 10th of July v/e have in captivity more than 200 female 

 seed-lobsters; xre have then discontinued the purchasing. Hot/ever, 

 at that date, m.ore than 50 per cent of the egg-bearing females that 

 were offered us bore a recent spai'.Tiing. As for the others, they 

 had already liberated many lai-vaeo 



Hatch ing boxes and rearing basins 



The carrying on of rearing v.'ith a greater number of females 

 necessitated -a more spacious arrangement. Also, we have added tvro 

 batteries of trro rearing boxes to those of the last year, which is 

 described in the report of 1946. Concerning the rearing basins, let 

 us say from the first that a single type has been used in 1947, viz. 

 the oval cement tanlc such as described in the report for iiie yecT 

 1945. The rearing establishment numbers at this time eight of these 

 tanks. The four basins of recent construction keep the form of those 

 already in operation in 1946, but the xmter inlets there have been 

 shifted, they are situated in the upper t\To-thirds of the basin, and 

 one at each end. This modification assures a better circulation 



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