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  <titleInfo>
    <title>Fotoperíodo e frequência alimentar na larvicultura do peixe beta</title>
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  <name type="personal">
    <namePart> Sales, A.D.</namePart>
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  <name type="personal">
    <namePart>Veras, G.C.</namePart>
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  <name type="personal">
    <namePart>Brabo, M.F.</namePart>
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  <name type="personal">
    <namePart> Abrunhosa, F.A.</namePart>
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  <name type="personal">
    <namePart>Alves, A.X.</namePart>
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  </name>
  <name type="personal">
    <namePart>Dias, B.C.B.</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart>Campelo,  D.A.V.</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart> Ferreira, M.S.S.</namePart>
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    <issuance>continuing</issuance>
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  <abstract>

RESUMO - Com este trabalho, objetivou-se avaliar o crescimento, a uniformidade e a sobrevivência das larvas de Betta splendens, submetidas a diferentes fotoperíodos e frequências de alimentação. Foram distribuídos aleatoreamente 480 indivíduos (4,53mg ± 0,32 e 5,51 ± 0,58mm) em 48 recipientes plásticos (1L), com densidade de 10 larvas/ L. Foi utilizado um delineamento experimental inteiramente ao acaso, com quatro repetições, em arranjo fatorial 6x2, com seis fotoperíodos (0L:24E, 6L:18E, 12L:12E, 16L:8E, 20L:4E, 24L:0E) e duas frequências de alimentação (duas ou quatro vezes/ dia). Durante um período de 15 dias, as larvas foram alimentadas com náuplios de Artemia, na proporção de 800 náuplios/ larva/ dia. Larvas de beta submetidas aos fotoperíodos de 12L:12E e 16L:8E apresentaram o maior crescimento em peso (P&lt;0,10), enquanto as que foram alimentadas quatro vezes ao dia apresentaram maior crescimento em comprimento e uniformidade (P&lt;0,10). No entanto, os indivíduos que foram alimentados quatro vezes ao dia apresentaram menor sobrevivência quando submetidos aos fotoperíodos de 16L:8E, 20L:4E e 24L:0E (P&lt;0,10). Por outro lado, as larvas submetidas aos fotoperíodos de 12L:12E, 16L:8E e 20L:4E apresentaram maior taxa de sobrevivência quando alimentadas duas vezes ao dia (P&lt;0,10). Portanto, ao se preconizar maior crescimento, uniformidade e sobrevivência das larvas de Betta splendens, recomenda-se a realização da larvicultura dessa espécie sob o fotoperíodo de 12L:12E, com o fornecimento de náuplios de Artemia em duas alimentações diárias.


Palavras-chave: peixe ornamental, Betta splendens, ritmo circadiano, manejo alimentar </abstract>
  <abstract>

ABSTRACT - The aim of this study was to evaluate the growth, uniformity and survival of Betta splendens larvae, submitted to different photoperiods and feeding frequency. Four hundred and eighty individuals (4.53mg ± 0.32 and 5.51 ± 0.58mm) were randomly distributed into 48 plastic containers (1L) at a density of 10 larvae/L. A completely randomized design was used, with four replications in a factorial 6 x 2, six photoperiods (0L:24D, 6L:18D, 12L:12D, 16L:8D, 20L:4D, 24L:0D) and two feeding frequencies (two or four times a day). The larvae were fed performed with Artemia nauplii at averaging 800/ larvae/ day, for 15 days. Beta larvae subjected to photoperiod 12L:12D and 16L:8E showed the greatest weight gain (P&lt;0.10), while those fed four times daily had greater length growth and uniformity (P&lt;0.10). However, individuals fed four times daily had lower survival when subjected to photoperiod 16L:8E, 20L:4L and 24E:0D (P&lt;0.10). On the other hand, larvae subjected to a photoperiod of 12L:12D, 16L:8L and 20L:4E showed higher survival rate when fed twice a day (P&lt;0.10). Therefore, with the intention of better growth, uniformity and survival of Betta splendens larvae, it is recommended that the hatchery in this species be done under a photoperiod of 12L: 12D with supply of Artemia nauplii twice daily.


Keywords: ornamental fish, Betta splendens, circadian rhythm, feed management</abstract>
  <note>Publicação online; 23 ref.; 3 tables; Summaries (En, Pt)</note>
  <subject>
    <topic>PEIXE ORNAMENTAL</topic>
  </subject>
  <subject>
    <topic>NUTRIÇÃO ANIMAL</topic>
  </subject>
  <subject>
    <topic>MANEJO</topic>
  </subject>
  <subject>
    <topic>PISCICULTURA</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Arquivo Brasileiro de Medicina Veterinária e Zootecnia (Brazil)</title>
    </titleInfo>
    <originInfo>
      <publisher>Belo Horizonte-MG Universidade Federal de Minas Gerais - Escola de Veterinaria 1983</publisher>
    </originInfo>
    <identifier>2025-0570</identifier>
    <identifier type="issn">0102-0935</identifier>
    <identifier type="local">BR2024004610</identifier>
    <part>
      <text>v. 68(4) p. 1062-1068; (2016)</text>
    </part>
  </relatedItem>
  <identifier type="uri">https://www.scielo.br/j/abmvz/a/sKfRKYNsfb33XHhjFz7qV8d/?format=pdf&amp;lang=pt</identifier>
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    <url>https://www.scielo.br/j/abmvz/a/sKfRKYNsfb33XHhjFz7qV8d/?format=pdf&amp;lang=pt</url>
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    <recordCreationDate encoding="marc">250129</recordCreationDate>
    <recordChangeDate encoding="iso8601">20250129142205.0</recordChangeDate>
    <languageOfCataloging>
      <languageTerm authority="iso639-2b" type="code">por</languageTerm>
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