Observations on the reproductive biology of female Hypostomus luetkeni Lacèpéde 1803

Observations on the reproductive biology of female Hypostomus luetkeni Lacèpéde 1803

— Seasonal observations in the gonadosomatic index and development stages of female ovaries showed that Hypostomus luetkeni has an extended spawning period lasting from September to February. Histological examinations and analysis of oocyte size distributions indicated a fractional spawning. Fecundi...

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Veröffentlicht in:Ecology of freshwater fish 1997-03, Vol.6 (1), p.53-56
Hauptverfasser: Mazzoni, R., Caramaschi, E. P.
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Sprache:eng
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armoured catfish
Freshwater
Hypostomus luetkeni
neotropics
reproduction
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container_title Ecology of freshwater fish
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creator Mazzoni, R.
Caramaschi, E. P.
description — Seasonal observations in the gonadosomatic index and development stages of female ovaries showed that Hypostomus luetkeni has an extended spawning period lasting from September to February. Histological examinations and analysis of oocyte size distributions indicated a fractional spawning. Fecundity was determined in ripe ovaries and indicated that H. luetkeni, as most other Loricariidae, spawn a small number (446‐936 eggs‐ind−1) of large eggs (5.2 mm).
doi_str_mv 10.1111/j.1600-0633.1997.tb00143.x
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subjects armoured catfish
Freshwater
Hypostomus luetkeni
neotropics
reproduction
title Observations on the reproductive biology of female Hypostomus luetkeni Lacèpéde 1803
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