Can anyone suggest the part of the body which can be used for DNA isolation in relation to marine gastropod and bivalve DNA barcoding?
Dear Subrata,
as far as I can see from the literature any muscle sample should do well. See for instance this paper covering a broad range of species:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0095003
stating that extraction was made from small samples of muscle tissue from each specimen. You may wish to contact the authors for further info.
Best
Danilo
I agree. Any tissue is good, just test them for your specific taxon/taxa.
Hello Subrata,
The main warning I would have is to avoid any part that may have algal growth (i.e. shells) and any part of the digestive system. This will help you avoid contamination. We had some problems with contamination when working with amplifying mtDNA in some very small aquatic snails. At first we just digested to whole specimen and got some bad contamination from different algal species. After this we removed the snail from the shell and this worked will.
Since you are working with marine bivalves you may also want to avoid gonadal tissue do to doubly uniparental inheritance (DUI). DUI is common in many marine bivalves and can make examining your sequences a little difficult. Here is a good paper on this topic.
https://www.researchgate.net/publication/261596214_Ubiquitous_heteroplasmy_in_Mytilus_spp._resulting_from_disruption_in_doubly_uniparental_inheritance_regulation
Best Regards
Article Ubiquitous heteroplasmy in Mytilus spp. resulting from disru...
When I worked on Mytilus the best part we got to do molecular work would be for mantle tissue. You might be able to use abductor tissue as well, you just want to make sure that the somatic tissue is well dissecting and clear of any gonadal tissue if you are worried about DUI.
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