. Compte-rendu des séances du sixième Congrès international de zoologie, tenu à Berne du 14 au 19 août 1904 ... Zoology. 700 ANNEXE I TABLE II Weight of Salmon caught in Severn for tlie 10 years 1894-1903. 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 6k°,123 6 k^010 5 k°,897 5 k°,783 5 k^670 5 k°,556 5 k^443 5 k°,330 5k°,216 Fish caught. The Severn Salmon are therefore now confined to médium sized fish 4536 grammes to 9072 grammes fish, that hâve migrated twice or three times from the sea. The points on the migration for considération therefore are : 1. What becomes of the fish bred in th
. Compte-rendu des séances du sixième Congrès international de zoologie, tenu à Berne du 14 au 19 août 1904 ... Zoology. 700 ANNEXE I TABLE II Weight of Salmon caught in Severn for tlie 10 years 1894-1903. 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 6k°,123 6 k^010 5 k°,897 5 k°,783 5 k^670 5 k°,556 5 k^443 5 k°,330 5k°,216 Fish caught. The Severn Salmon are therefore now confined to médium sized fish 4536 grammes to 9072 grammes fish, that hâve migrated twice or three times from the sea. The points on the migration for considération therefore are : 1. What becomes of the fish bred in the Severn on their first return to fresh water from the sea: as Griise they do not come up the Severn, do they go up any other river or do they for some reason spend their Griise life in the sea instead of returning to fresh water? 2. Why do the older fish and not the Griise asccnd the Severn if they hâve, as is generally supposed, been back to the fresh water as Griise ? Some very important questions arise on thèse facts (1) what has become of the Severn Griise ? Do the fish for some reason miss the Griise stage altogether and only return as mature fish. This is possible but it would be an unheard of fact in Salmon history : or do the Severn bred griise retui-n to some other river. This seems the more likely explanation but it is very difficult to say to what river they return as during the time the Griise hâve been absent from the Severn it does not appear from the évidence available that in any of the rivers flowing into the Severn Sea there has been a larger number of Griise than usual. They may go further afield but so far no river has been heard of with an abnormal number of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original International Congress of Zoology (6th : 1904 : Bern). Genève,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1905
