I keep records of each snake's activities, noting feeding, shedding and breeding activity.

我坚持记录每条蛇的活跃度，记下它们吃食、退皮和繁殖情况。

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With adoption of SSR mark technology, the DNA extraction method can be effectively employed in seed purity analysis and marker aided breeding activity.

结合采用SSR分子标记技术，此DNA提取方法可有效地用于玉米种子纯度检验和分子标记辅助育种。

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The first chapter of the book contains general husbandry information, with techniques for conditioning and bringing fish into breeding condition and the various ways to trigger breeding activity.

该书的第一章介绍了一般的饲养知识，包括调养到繁殖状态的技巧，触发繁殖行为的方式等等。

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Dan Jarvis, from the Cornish Seal Sanctuary at Gweek in west Cornwall, said he is concerned the activity could discourage grey seals from using the area for breeding.

BBC: Marine Minerals