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首页> 外文期刊>Marine biology >Mortality on zoea stage of the Pacific white shrimp Litopenaeus vannamei caused by Cochlodinium polykrikoides (Dinophyceae) and Chattonella spp. (Raphidophyceae)
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Mortality on zoea stage of the Pacific white shrimp Litopenaeus vannamei caused by Cochlodinium polykrikoides (Dinophyceae) and Chattonella spp. (Raphidophyceae)

机译：太平洋白对虾凡纳滨对虾（Dinophyceae）和沙通氏菌（Chantonella spp）造成的zoea阶段死亡。 （红藻科）

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摘要

Cochlodinium polykrikoides and Chattonella spp. are responsible for harmful algal blooms along the Mexican coasts. These microalgae have the ability to produce toxic compounds such as reactive oxygen species, brevetoxin-like compounds, nitric oxide, and free polyunsaturated fatty acids, which can be harmful to marine fauna. However, scarce information exists about the effect of these harmful phytoplankton species on potential zooplankton grazers. In this study, the effect of microalgae Cochlodinium polykrikoides and Chattonella spp. isolates from the Gulf of California were evaluated on larval stages of the shrimp Litopenaeus vannamei. Several bioassays were performed from nauplii to zoea stages. Nauplii of Litopenaeus vannamei were placed (1 well(-1)) in microdilution plates, and in each well 1 mL of different cell concentrations (0.5, 3, and 6 x 10(3) cell mL(-1)) of Cochlodinium polykrikoides, Chattonella subsalsa, C. marina var. marina, and C. marina var. ovata was added. Nontoxic Chaetoceros calcitrans and Tetraselmis suecica were used as controls. Higher mortalities were observed when L. vannamei larvae reached the zoea stage. Sudden increase in mortality was caused by C. polykrikoides at the beginning of the zoea stage, followed by C. marina var. ovata (LT50 similar to 1 day), C. subsalsa - (LT50 1 day 19 h), and C. marina var. marina (LT50 similar to 2 days). This study showed that L. vannamei larvae could be affected by C. polykrikoides and Chattonella spp. causing mortalities close to 100% during the zoea stage, when they start feeding on phytoplankton.
机译：Cochlodinium polykrikoides和Chattonella spp。是造成墨西哥沿岸有害藻类大量繁殖的原因。这些微藻具有产生有毒化合物的能力，例如活性氧，短毒素样化合物，一氧化氮和游离的多不饱和脂肪酸，这些物质可能对海洋动物有害。然而，关于这些有害浮游植物对潜在的浮游动物放牧者的影响的信息很少。在这项研究中，微藻多球藻和沙门氏菌的影响。在虾对虾凡纳滨对虾的幼体阶段对来自加利福尼亚湾的分离株进行了评估。从无节幼体到zoea阶段进行了几种生物测定。将凡纳滨对虾Nauplii（1孔（-1））放在微稀释板中，每孔中1 mL不同细胞浓度（0.5、3和6 x 10（3）细胞mL（-1））的Cochlodinium polykrikoides ，Chattonella subsalsa，C. marina var。小游艇船坞和C.小游艇船坞ovata已添加。无毒的Chaetoceros calcitrans和Tetraselmis suecica被用作对照。当南美白对虾幼虫达到zoea阶段时，死亡率更高。在zoea阶段开始时，多核衣原体导致死亡率突然增加，其次是滨海衣原体。卵子（LT50与1天相似），C。subsalsa-（LT50 1天19小时）和C. marina var。码头（LT50相当于2天）。这项研究表明，南美白对虾幼虫可能受多角梭状芽胞杆菌和查通氏菌属的影响。当他们开始以浮游植物为食时，在zoea阶段导致死亡率接近100％。

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  • 来源
    《Marine biology》 |2017年第3期|57.1-57.10|共10页
  • 作者

    Perez-Morales Alfredo; Band-Schmidt Christine J.; Martinez-Diaz Sergio F.;

  • 作者单位

    Univ Colima, Ctr Univ Invest Oceanol, Carretera Manzanillo Barra de Navidad Km 20, Manzanillo 28860, Colima, Mexico|Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Dept Plancton & Ecol Marina, Av IPN S-N, La Paz 23096, Baja Calif Sur, Mexico;

    Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Dept Plancton & Ecol Marina, Av IPN S-N, La Paz 23096, Baja Calif Sur, Mexico;

    Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Dept Plancton & Ecol Marina, Av IPN S-N, La Paz 23096, Baja Calif Sur, Mexico;

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  • 正文语种 eng
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  • 关键词

    Harmful algal blooms; LT50; Mortality rate; Shrimp larvae; Toxicity;

    机译：有害藻华;LT50;死亡率;虾幼虫;毒性;

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