Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40555-014-0065-8/MediaObjects/40555_2014_Article_65_Fig1_HTML.jpg)
Non-yolky and yolky oocytes during non-reproductive and reproductive seasons. (a) shows non-yolky oocytes, NY (non-reproductive season). (b) shows yolky oocytes (Y) usually occur during secondary vitellogenesis (reproductive season).
Non-yolky and yolky oocytes during non-reproductive and reproductive seasons. (a) shows non-yolky oocytes, NY (non-reproductive season). (b) shows yolky oocytes (Y) usually occur during secondary vitellogenesis (reproductive season).