Mötet den 1 november 1002. 53 



Nyköping. ^) In the west-coast- and southern rivers of Sweden 

 the rise of elvers seems to be a more common phenomenon. ^) 

 There the rise usually takes place earlier in the season, 

 sometimes already in the spring. From the occurrence of elvers 

 in northern Sweden Lilljeborg makes the conclusion, that eel 

 does breed in those parts and that males must be met with 

 also at the shores of the Gulf of ßothnia. ^) As already shown 

 I have not been able to state this presumption. Also in Swe- 

 den male-eels have never been found farther north than the 

 Island Väldö in Kalmar län to the south from Oskarshamn. 

 Dr F. Trybom^) says, that during many years he has exam- 

 ined small eels from the coast of Kalmar län, Östergötland 

 and Gotland without fmding any males amongst them. Those 

 were all taken in the summer. But last year he got 10 small 

 eels caught in the month of September in eeltraps at Väldö. 

 All these eels showed themselves to be males. 



Thus it is not impossible that male-eels sometimes could 

 be found also in our coast waters. Still it seems to be very 

 unlikely that the eel spawns in our waters. Would that be the 

 case, male-eels would be common, and elvers in the first year 

 would be found. According to Petersen^) eels 31 — 40 cm 

 long must be at least 3 or 4 years old and also elvers 8 — 13 cm 



^) R. Lundberg: Om ålynglets uppvandring och åtgärderatt 

 befordra denna (Svensk Fiskeri-Tidskrift. 9.e årg. 1900, p. 132. 



-) Cnfr. Lundberg 1. c, T r yb o m, Några fiskodlingsföretag i 

 Skåne åren 1883 och 1884 (Malmöhus läns K. Hushållningssällskaps qvar- 

 talskrift. 4:de häftet. 1885, p. 289), C. E. Eriksson, Om ålynglets upp- 

 vandring i Mörrumsåu (Svensk Fiskeri-Tidskrift. 5 e årg. 1896, p. 186), 

 C. E. Eriksson, Om ålynglets vandring i Lagaån (Svensk Fiskeri-Tidskrift. 

 6:e årg. 1897, p. 20), T r y b o m, Ålyugel på vandring (Svensk Fiskeri 

 Tidskrift. 7:e årg. 1898, p. 147). 



^) L i 1 1 j e b o r g, 1. c, p. 393. 



*) Filip Trybom, Ålhanar från Sveriges Ostkust (Svensk 

 Fiskeri-Tidskrift. ll:e årg. 1902, p. 9). 



^) C. G. Joh. Petersen, Fiskenes biologiske Forhold i Holbaek 

 Fjord 1890— (91). Beretning til Indenrigsministeriet fra Den danske bio- 

 logiske Station. I. Kj0benhavn 1891, p. 156. 



