18 of the adult Olympia oyster broodstock samples that were 2bRAD sequenced were also sent off for MBD-enriched and bisulfite treatment sequencing to get epigenetic information (see project wiki). We wanted to associate size data with these samples and check if the 2brad sequencing worked.

First, some correction of sample names in the 2brad demultiplexing:

When I was on the last step of the 2brad protocol I accidentally deleted some of the sample names in Library 3 from the “Library” sheet in the master sample sheet. I didn’t notice until making the barcode sample sheet and so denoted those on the barcode sheet by putting “w” next to the name. I went back in the sheet revision history to 11/21/15 at 3:22pm and associated the correct name with the well and barcode for these and checked all other samples.

• HC4_12w -> HC4_11
• HC4_13w -> HC4_10
• HC4_15w -> HC4_15
• HC4_1w -> HC4_7
• HC4_5w -> HC4_8
• HC5_1w -> HC5_1
• SS3_15w -> SS3_20
• SS3_16w -> SS3_21
• SS4_1Aw -> SS4_7
• SS4_1Bw -> SS4_1
• SS4_3w -> SS4_16
• SS4_7w -> SS4_9
• SS4_9 -> SS4_3

Size

When the broodstock oysters were dissected at Manchester last summer, I weighed them in the shell and took pictures of them first with a ruler so later they could be measured (dissections done on 8/13/15 and 8/17/15). I took the pictures for families HC1,  HC2, HC3, SS2, SS3, and SS5 and opened them in ImageJ. For each picture, I set the scale by drawing a line on 1 cm of the ruler to get the number of pixels per mm 3 times and getting the average pixels/mm. To get shell width, I drew a line between the two widest dorsal-ventral points of the shell (with the hinge always on bottom. I did this 2x for each oyster and took the average of the measurements.

I also measured shell area by drawing a line around the oyster shell 2x and taking the average. These obviously have more spread in the values.

Read Numbers