Oogenesis and gonad maturation in the copepod Calanus finmarchicus and the prediction of egg production from preserved samples / Barbara Niehoff, Hans-Jürgen Hirche.

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007 ta
008 231002s1996####xx#a##|##|###|0||#0|eng#d
035 ## ‡aSPRI-139221
040 ## ‡aUkCU-P‡beng‡eaacr
100 1# ‡aNiehoff, Barbara.
245 10 ‡aOogenesis and gonad maturation in the copepod Calanus finmarchicus and the prediction of egg production from preserved samples /‡cBarbara Niehoff, Hans-Jürgen Hirche.
260 ## ‡a[S.l.] :‡b[s.n.],‡c1996.
300 ## ‡ap. 601-612 :‡bill., diags., tables.
500 ## ‡aPolar Biology. Vol. 16(8) :601-612 (1996).
520 3# ‡aStudy was made in transition from winter to spring in fjord in northern Norway. Observations on whole (transparent) animals and histological sections were combined to establish system of maturation stages, to describe spawning cycle and to estimate egg production rates from preserved samples. Four oocyte stages were identified and related to macroscopic system of four gonad development stages that can be applied to whole stained animals.To predict egg production rate one must know clutch size and interval of clutch deposition, which should be possible solely from preserved samples.
650 07 ‡a591.16 -- Animal reproduction.‡2udc
650 07 ‡a595.34 -- Copepoda: Calanus finmarchicus.‡2udc
650 07 ‡aH2 -- Zoology: invertebrates.‡2local
651 #7 ‡a(*3) -- Arctic regions.‡2udc
651 #7 ‡a(*584) -- Troms.‡2udc
700 1# ‡aHirche, Hans-Jürgen.
773 0# ‡7nnas ‡tPolar Biology. ‡gVol. 16(8) (1996) ‡wSPRI-64245
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20231002