N.Z. MARINE DEPARTMENT-FISHERIE,S BULLETIN No. .į

: rn the three years mentioned, the approximate average annual quantity of eggs
handled at all stations was 20,000,000:i
The average anlrual collection of eggs was as follows:_
Ova of brown trout
Ova of rainbow trout
Ova of quinnat salmon
Ova of Atlantic salmon ......
Total Ova
11,559,000
7,773,æO
527,UJ}
246,æO
20,044,æ0
of this quantity a[ the eggs of quinnat and Atla'tic sarmon a'd of brown trout,
as well as 10 per cent' of the eggs of rainbow trout, were collectecl i' South lslancl
rvaters. with the exceptio' of 2.s per cent. of the brown-trout ova, wrrich were
from pond stock, all were obtainecl by trapping runs of wit¿ fish.
The average annuar co[ectio' of. z73,oN salmon eggs was crisposecl of thus:_
Exported from
Releasecl (almost ^Iew all as fry) in streams
, where collected
Released as fry elsewhere in N.Z.
Losses are not recorded.
zearand,as eyecr ova 2r,@o or 3 per cent. (approx.)
..In the average year the totar of 7g/zl,no eggs of both species of trout was
disposed of in the following manner:_
Eyed ova exported frorn N.Z. 24S,OO0 or 1 per cent. (approx.)
Eyed ova planted in N.Z. waters 1,134,000 or 6 per cent. (approx.)
Fly (immediate and early post_laval
fislr) released IS/3},Uû or Z9 per cent. (approx.)
Fingerlings (fish intermediate be_
tween fry and yearlings) re_
leased
Yearlings (fish of g to 14
released
The balancc of about
olterations. for in nrany
s4l
months)
596,000 or ZZ per cent. (approx.)
155,000 or 20 per cent. (approx.)
549,000 or 3 per cent. (approx.)
33,000 or 0 per. cent. (approx.)
Recorded total clisposal ...... lZ,2OO,W or g9 per cent. (approx.)
2,000,000 represe'ts part orly of the lo,ss irrvolvecl i'
cases the numl¡er of fish statecl to have been releasecl is
Fisheries bulletin (N.Z. Marine Dept.) no. 9 (1948)
i¿