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首页> 外文期刊>American Zoologist >Two designs of marine egg masses and their divergent consequences foroxygen supply and desiccation in air
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Two designs of marine egg masses and their divergent consequences foroxygen supply and desiccation in air

机译：两种海洋卵团的设计及其对空气中氧气供应和干燥的不同结果

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Two common types of egg masses rely on differing routes of supply of oxygen in water. When embryos are embedded in a gelatinous matrix, oxygen is supplied by diffusion through the gel, and thicker masses require more gel per embryo. When an adherent mass of eggs lacks a gel matrix, oxygen can be provided from water flowing through the open interstices between eggs, and larger eggs provide larger channels and thus less resistance to dow, Both types occur intertidally, where they are periodically exposed to air. Exposure to air can have a greater effect on oxygen supply via interstices than on supply via gel. Oxygen diffusing in interstices drained of water provides increased rates of supply to masses of adherent eggs. In contrast, diffusion through gel is similar for masses in air and water. Effects of emersion on desiccation also differ for the two types of egg masses. Additional gel matrix can reduce salinity change from desiccation while enhancing oxygen supply, whereas draining of interstices, though necessary for oxygen supply, may increase risk of desiccation.
机译：两种常见的蛋块类型依赖于水中氧气供应的不同途径。当胚胎嵌入凝胶状基质中时，氧气通过凝胶扩散而提供氧气，而较厚的质量则每个胚胎需要更多的凝胶。当附着的大量鸡蛋缺少凝胶基质时，可以通过流过鸡蛋之间的开放间隙的水提供氧气，较大的鸡蛋可以提供较大的通道，因此对陶氏的抵抗力较小。两种类型都发生间断，它们会定期暴露于空气中。暴露于空气对通过空隙的氧气供应的影响要比对凝胶的氧气供应的影响大。氧气扩散到排水的空隙中，增加了附着在卵上的质量。相反，对于空气和水中的物质，通过凝胶的扩散是相似的。对于两种类型的卵块，出苗对干燥的影响也不同。额外的凝胶基质可以减少干燥引起的盐度变化，同时增加氧气的供应，而空隙的排出虽然是氧气供应所必需的，但可能会增加干燥的风险。

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