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首页> 外文期刊>Marine biology >Are Monoalgal Diets Inferior To Plurialgal Diets To Maximize Cultivation Of The Calanoid Copepod Temora Stylifera?
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Are Monoalgal Diets Inferior To Plurialgal Diets To Maximize Cultivation Of The Calanoid Copepod Temora Stylifera?

机译：单藻饮食是否次于聚藻饮食，以最大限度地提高Calanoid Copepod Temora Stylifera的养殖量？

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摘要

Temora stylifera adult copepods were fed with four different monoalgal diets and six combinations of the same cultures for 15 days. Fecundity, hatching success, number of cannibalized embryos, fecal pellet production, adult mortality and naupliar recruitment were compared, in order to find the best diet for this species. Phytoplankton species tested were Prorocentrum minimum (PRO); Isochr-ysis galbana (ISO); Tetraselmis suecica (TETRA) and Rhodomonas baltica (RHO) which were supplied alone or in different combinations and at various concentrations ranging from a minimum of 1 mg C L~(-1) day~(-1) to a maximum of 66 mgCL~(-1) day~(-1). Of the ten diets tested, ISO was the worst and was unable to sustain egg production and adult survival possibly because adults were unable to ingest this alga due to its small size. TETRA was also a poor food since it negatively impacted egg production and adult survival, as well as egg hatching success, possibly due to the lack of essential compounds necessary for optimal embryogenesis. RHO and PRO were the best foods inducing highest egg production, hatching success and naupliar recruitment. Even if mean egg production rates were similar to those obtained with some mixed diets, carbon intake concentrations with mixed diets were from 3 to 33 and from 6.6 to 66 times higher than with RHO and PRO given alone, respectively. Mixed diets of ISO and PRO, especially when supplied at higher concentrations (66 mg C L~(-1) day~(-1)), had a negative effect on egg hatching success and adult survival, with a corresponding reduction in naupliar recruitment. On the other hand, mixed diets of TETRA and PRO promoted high naupliar recruitment but values were similar to PRO offered alone. Our results indicate that a good monoalgal diet such as RHO and PRO can be as effective as a mixed diet to sustain the mass cultivation of T. stylifera.
机译：用四种不同的单藻饮食和相同培养物的六种组合喂食满天蛾成年co足类动物15天。比较繁殖力，孵化成功率，食人胚胎的数量，粪便颗粒的产生，成年死亡率和无节幼体的繁殖，以寻找该种类的最佳饮食。测试的浮游植物种类为最低原中心（PRO）；异黄腐球菌（ISO）;可以单独或以不同组合的形式供应sutecica suecica（TETRA）和波罗的海红景天（RHO），浓度从最小1 mg CL〜（-1）天〜（-1）到最大66 mgCL〜（ -1）天〜（-1）。在所测试的十种饮食中，ISO是最差的，无法维持卵的生产和成虫的存活，可能是因为成虫因其体积小而无法摄入这种藻。 TETRA也是一种劣质食品，因为它会对卵的生产和成年存活以及卵孵化的成功产生负面影响，这可能是由于缺乏最佳胚胎发生所必需的必需化合物所致。 RHO和PRO是诱导最高产卵量，孵化成功率和无节幼体募集的最佳食品。即使平均产蛋率与某些混合日粮所获得的相似，但混合日粮中碳的摄入量分别比单独给予RHO和PRO时高3到33倍和从6.6到66倍。 ISO和PRO的混合日粮，尤其是当以更高的浓度（66 mg C L〜（-1）天〜（-1））提供时，对卵孵化成功率和成年存活率均具有负面影响，并减少了无节幼体的募集​​。另一方面，TETRA和PRO的混合饮食促进了高幼仔的募集，但其价值与单独提供的PRO相似。我们的结果表明，良好的单藻饮食（如RHO和PRO）可以与混合饮食一样有效，以维持sty.ra的大量培养。

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