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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Ecology of freshwater fish 1997-03, Vol.6 (1), p.53-56
Hauptverfasser: Mazzoni, R., Caramaschi, E. P.
Format: Artikel
Sprache:eng
Schlagworte:
armoured catfish
Freshwater
Hypostomus luetkeni
neotropics
reproduction
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:— 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).
ISSN:0906-6691
1600-0633
DOI:10.1111/j.1600-0633.1997.tb00143.x