シマアジ仔稚魚の各種ストレス耐性に及ぼす薬用ハーブの効果  [in Japanese] Medicinal Herbs Promote Resistances of Larval and Juvenile Striped Jack Pseudocaranx dentex for Various Stresses  [in Japanese]

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Abstract

シンキク,サンザシ(Cf), カワラヨモギ, センキュウから成る4種薬用ハーブ混合物(HM)と Cf のメタノール抽出エキスおよび粉末がシマアジ仔魚,沖出しおよび種苗サイズ稚魚に及ぼす飼餌料への添加効果について調べた。沖出しサイズ稚魚のハーブ区の終了時における平均体重は対照区より重かった。一方,仔魚における <I>V. anguillarum</I> の攻撃試験では,ハーブ区の生残率は対照区より有意に高かった。また,仔稚魚における干出試験ではハーブ区の生残率が高く,回復時間は短い傾向にあった。さらに,沖出し稚魚サイズにおける麻酔からの回復時間はハーブ区が対照区より短く,種苗サイズ稚魚における低比重ストレス試験の結果では,ハーブ区の半数致死時間が対照区より明らかに延長した。これらの結果から,Cf および HM の飼餌料への添加はシマアジ仔稚魚の抗病性およびストレス耐性の向上に有効であり,種苗量産技術の確立に貢献できることが示唆された。

The effect of dietary medicinal herbs, the herb mixture (HM) of <I>Massa medicata</I>, <I>Crataegi fructus</I> (Cf), <I>Artemisia capillaries</I> and <I>Cnidium officinale</I>, and single Cf, on various challenge and physical stress tests were examined for early three stages of striped jack. The larvae at 3 days after hatching, juveniles at the transportation from a land tank to a net cage and fingerlings at the body size before a shipment were given rotifer <I>Brachionus plicatilis</I> sp. complex and test diets, with or without the extract and fine powder of medicinal herbs, respectively. Final body weight of juveniles fed diets with the extracts was heavier than those fed diet without the extract. However, larvae fed rotifer with herb extract induced higher survival than those fed control rotifer without herbs against the challenge test with <I>Vibrio anguillarum</I>. The herbal groups of larvae, juvenile and fingerling showed slightly higher and shorter tendency in the survival and recovery time after air exposure than the control group. The herbal groups of juvenile showed shorter recovery time after the anesthesia than control group. Furthermore, the herbal groups of fingerling appeared longer LD50 time than control group against the low specific gravity stress. These results indicate the possibility that Cf and HM in rotifer and diets are useful to improve various stress resistance, connecting to the mass fingerling production of striped jack.

Journal

  • Aquaculture Science

    Aquaculture Science 60(2), 199-205, 2012-06-20

    Japanese Society for Aquaculture Science

References:  20

Codes

  • NII Article ID (NAID)
    10031122349
  • NII NACSIS-CAT ID (NCID)
    AN00124667
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03714217
  • NDL Article ID
    023860795
  • NDL Call No.
    Z18-761
  • Data Source
    CJP  NDL  IR  J-STAGE 
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