356 



U. S. BUREAU OF FISHERIES 



Summary of musscl-infcction work, fiscal year 1926 



Stations 



Species 



Grass mucket 

 (L. luteola) 



River mucket 



(L. ligamen- 



tina) 



Pocketbook 

 (L. ventrkosay 



Wabasha, Minn 



Alma, Wis 



West Newton, Minn 



Minneiska, Minn 



Chimney Rock, Wis 



Winona, Minn 



Homer, Minn 



Dakota, Minn 



La Crosse, Wis 



Genoa, Wis 



Ferryville, Wis 



Lynxville, Wis 



Marquette, Iowa 



Guttenburg, Iowa 



North Buena Vista, Iowa. 



Bellevue, Iowa 



Andalusia, 111 



21, 790, 000 

 1, 468, 000 



31, 576, 900 

 741, 153, 000 

 305, 608, 500 



9, 459, 000 

 10, 508, 300 

 18, 339, 000 

 94, 022, 800 



429, 009, 000 

 14, 569, 000 

 12, 840, 000 



109, 015, 000 



372, 219, 900 

 9, 582, 000 



12, 987, 600 



131, 531, 500 



5, 339, 500 



197, 986, 000 



8, 404, 500 



48, 978, 000 



3, 560, 500 



21, 720, 100 



153, 002, 000 



2, 290, 000 

 "36,~665,~666 



Total. 



1,080,017,000 



1,084,653,100 



38, 955, 000 



1 This mussel is not of best quality, and fishes are infected with it only when first-class mussels are not 

 available. 



MARINE FISHES 



Although the combined egg collections at the stations comprising 

 this group did not reach the enormous total attained in 1925, they 

 were well above the average collections of past years and the results 

 of the fiscal year's work may be regarded as fairly successful. Eggs 

 of the various species handled to the number of 4,571,098,000 were 

 taken at the three stations, showing a falling off of 315,000,000 when 

 compared with the total of the preceding year. This loss was occa- 

 sioned principally by the smaller collections of winter-flounder eggs 

 made along the Maine coast. In addition to the total named, 

 153,148,000 cod and haddock eggs were secured in connection with 

 the offshore fishing operations and were planted as fertilized eggs 

 on the grounds where taken. 



Boothbay Harbor (Me.) Station 

 [E. E. Hahn, Superintendent] 



Although a very careful watch was maintained in the hope that pollock, 

 haddock, and cod in spawning condition might be secured, no eggs of any of 

 those species were obtained, and the year's work at this station was confined 

 to the propagation of the winter flounder or flatfish. Active operations for the 

 collection of eggs of this species were undertaken on March 2, when the entire 

 88 fyke nets available for the work were set in desirable positions from west 

 Penobscot Bay to Casco Bay. These were fished daily, when weather per- 

 mitted, up to the close of the season in late April. Windy but otherwise 

 average weather prevailed during the entire fishing period, and a fair number 

 of brood fish were taken, though they were less abundant in Casco Bay than 

 usual, and the catch as a whole was somewhat smaller than the record <me of 

 last year. Right at the busiest part of the fishing season the steamer Gamut 

 was again forced out of commission because of deficient boiler stay bolts and 

 had to be laid up for two weeks. This, of course, resulted in the loss of large 

 numbers of eggs, as it was impossible to reach the more distant nets with the 

 small motor boats at hand. As an outcome of the season's fishing about 5.800 

 brood winter flounder were captured, and from them 1,585,685.000 eggs of 

 excellent quality were secured, the aggregate losses during incubation being 

 estimated at less than 6 per cent. 



During the summer a very good display of local fishes, seals, crustaceans, 

 and bottom material was maintained in the hatching room, constituting a 

 source of attraction to the many visitors to the station. 



