Unilateral eyestalk ablation improves molting frequency and reproduction in Macrobrachium amazonicum females.
BASTOS, A. M. | LIMA, J. de F. | TAVARES-DIAS, M. | ARGEMIRO MIDONÊS BASTOS, UNIFAP | JO DE FARIAS LIMA, CPAF-AP | MARCOS TAVARES DIAS, CPAF-AP.
This study has investigated the influence of unilateral eyestalk ablation on the survival, molting frequency, fecundity, reproductive output, and fertility of M. amazonicum females. We divided 96 females into with ablation and without ablation groups with six replicates. Water quality, growth, survival rate, intermolt period, molts number, and ovigerous females over a 90-day period were monitored. Unilateral eyestalk ablation reduced intermolt period by 30% and increased molts number, ovigerous females, and reproductive output. Our findings indicate that unilateral eyestalk ablation positively influences reproduction in M. amazonicum and is appropriate for females of this species having a body length of greater than or equal to 70 mm.
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