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      Ablação ocular no camarão Macrobrachium rosenbergii (De Man) (Crustacea, Decapoda, Palaemonidae): efeitos sobre a reprodução, pigmentação epidérmica e atividade alimentar Translated title: Eyestalk ablation in the prawn Macrobrachium rosenbergii (De Man) (Crustacea, Decapoda, Palaemonidae): effects on reproduction, epidermic pigmentation and feeding activity

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          Translated abstract

          This study analyze the consequences of unilateral and bilateral ablation based on ovigerous percentage, consecutive spawns, and secondary effects of the surgical process in the females of Macrobrachium rosenbergii (De Man, 1879). Two experiments were carried out with four and seven months old females in intermolt stage. Each experiment was comprised of control, unilateral and bilateral ablation. Eyestalk ablation was done with a bistoury with a topic hot cauterization followed by application of antibiotic pomades. The animals were maintained at constant temperature (28 ± 1,05ºC) and photoperiod of 12L: 12D within fibercement boxes with sandy bottom and biological filter. Females were observed once a day during fourteen weeks, registering gonadal condition, ecdysis and presence of spermatophore (mating) and spawning. Unilateral ablation technique is more efficient due to the anticipation of the first spawn, repeatability between spawns, expressive rate of ovigerous females and survival, that favored its applicability. Bilateral eyestalk ablation produced the mortality of ali the females with change in coloration and food activity patterns. These results corroborate other observations on penaeid shrimps. though bilateral ablation on some lobsters was a success. These results showing an interespecific variation and can be used in aquaculture projects.

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          Most cited references51

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          Endocrine control of reproduction in decapod Crustacea.

          K Adiyodi (1970)
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            Freshwater prawn culture: a review

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              Effects of unilateral eyestalk ablation on ovarian histology and oocyte size frequency of wild and pond-reared Penaeus monodon (Fabricius) broodstock

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                Author and article information

                Journal
                rbzool
                Revista Brasileira de Zoologia
                Rev. Bras. Zool.
                Sociedade Brasileira de Zoologia (Curitiba, PR, Brazil )
                0101-8175
                September 2000
                : 17
                : 3
                : 667-680
                Affiliations
                [02] Jaboticabal São Paulo orgnameUniversidade Estadual Paulista orgdiv1Departamento de Biologia Aplicada Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos Brasil
                [01] orgnameUniversidade Estadual Paulista orgdiv1Centro de Aquicultura orgdiv2Laboratório de Biologia de Crustáceos
                Article
                S0101-81752000000300012 S0101-8175(00)01700312
                d564e136-b815-448d-821c-3588b6babcb6

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 22 August 2000
                : 26 August 1999
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 51, Pages: 14
                Product

                SciELO Brazil


                pigmentation,Crustacea,feeding activity,prawn,eyestalk ablation,reproduction

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