Why can't young fish eat plants? Neither digestive enzymes nor gut development preclude herbivory in the young of a stomachless marine herbivorous fish
Why can't young fish eat plants? Neither digestive enzymes nor gut development preclude herbivory in the young of a stomachless marine herbivorous fish
复制标题
DOI：
10.1016/j.cbpb.2010.09.010
复制
发表时间：
2011-01-01
影响因子：
2.2
通讯作者：
Tibbetts, Ian R.
中科院分区：
文献类型：
--
作者：
Day, Ryan D.;German, Donovan P.;Tibbetts, Ian R.
大多数幼鱼缺乏作为食草动物的能力，这归因于消化系统的两个方面：高氮需求和临界肠道容量。我们比较了两个大小类的海洋食草动物Hyporhamphus regularis ardelio的消化形态和生物化学，preontogenetic营养转变（前OTS，100毫米），以确定是什么限制了草食动物的发病，以及他们的消化过程如何符合目前的消化模型。比较肠长与体长（相对肠长）和体质量（Zihler指数）的两个肠-体指数均显著降低（RGL 0.59 -> 0.49，P2.44，P
Most young fishes lack the ability to function as herbivores, which has been attributed to two aspects of the digestive system: elevated nitrogen demand and a critical gut capacity. We compared the digestive morphology and biochemistry of two size classes of the marine herbivore Hyporhamphus regularis ardelio, preontogenetic trophic shift (pre-OTS, 100 mm), to determine what limits the onset of herbivory and how their digestive processes fit with current models of digestion. Two gut-somatic indices comparing gut length to body length (relative gut length) and body mass (Zihler's Index) demonstrated a significant decrease (RGL 0.59 -> 0.49, P 2.44, P