Post – Page 5 – Small Fishes

inside the gut of larval fishes

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I have been working on gut contents of larval fishes in Yangtze River estuary for a while. Besides a lot of Cladocera and Copepods, some other creatures occurred unexpectedly, like insects and parasites as below....

矛尾鰕虎和斑尾刺鰕虎仔稚鱼形态鉴别特征

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矛尾鰕虎（Chaeturichthys stigmatias）和斑尾刺鰕虎（Acanthogobius ommaturus）是东海近岸常见的两种鰕虎，虽然两者的亲鱼繁殖时间略有差别，但是在最近的一次鉴定中发现两种的仔稚鱼多次同时出现在同一个样品中，给鉴定带来一些麻烦。...

[Trial]Identify fish eggs and larvae by DNA barcode

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Three days ago, bored with keep writing down uncountable unidentified spp., I decided to do this. 44 fish specimens including two eggs and 42 larvae were dissected for DNA extracting (Sangon DNA extract kit). All but one specimen were successfully amplified in the following PCR (TaKaRa LA Taq kit)....

R tips

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R里面做图很强大，也很麻烦，往往需要设置很多参数，用par( )把各种参数都定好是一个好办法。但是图片导入word后如果进行了缩放，那么字体大小的调整又要大动干戈。前几天跟同事学了个好办法，这方法在图片数量不多的情况下，连par( )里的那些设定都可以省略很多。图片做出来后，另存为pdf格式（或者其他的一些格式可能也行），然后用Microsoft Visio（Windows）或者OmniGraffle Professional（OSX）打开，可以对图上所有的东西进行编辑，每一个点、每一条线、每一个文字都可任意修改，很方便。...

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