Larval development of hoplias cf. Lacerdae (Pisces: Erythrinidae) and delayed initial feeding effects

dc.creatorSirol, Rodolfo N.
dc.creatorMenin, Eliane
dc.creatorAndrade, Dálcio R.
dc.creatorSilva, Martinho A.
dc.date2019-05-27T23:39:33Z
dc.date2019-05-27T23:39:33Z
dc.date1998-03
dc.date.accessioned2023-09-27T20:44:19Z
dc.date.available2023-09-27T20:44:19Z
dc.identifier1678-4324
dc.identifierhttp://dx.doi.org/10.1590/S1516-89131998000100006
dc.identifierhttp://www.locus.ufv.br/handle/123456789/25540
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8946750
dc.descriptionLarval development of Hoplias cf. lacerdae was studied under laboratory conditions. After hatching, ontogenetic changes were recorded on food-deprived larvae in 12-hour intervals. Mouth opening occurred after 2.5 days and notochord terminated flexure in 6.5 days. Notochord length increased at a constant rate until complete yolk absorption (13,5 days). Larval dry weight and body height diminished gradually up to 21 days after hatching, when all starved larvae died. Every 12 hours after yolk absorption, groups of larvae (n=15), were separeted, and fed with Artemia nauplii for 10 days. The point- of-no-return (when 50% of larvae were unable to feed or to assimilate ingested food after delayed feeding), was not apparent in this species.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherBrazilian Archives of Biology and Technology
dc.relationv. 41, n. 1, p. 47-54, mar. 1998
dc.rightsOpen Access
dc.subjectFish larva
dc.subjectHoplias
dc.subjectLarval development
dc.subjectStarvation
dc.subjectPoint-of-no-return
dc.titleLarval development of hoplias cf. Lacerdae (Pisces: Erythrinidae) and delayed initial feeding effects
dc.typeArtigo


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