4.4.3.2. Anaerobic nitric oxide reduction
Families like Aeromonadaceae and Enterobacteriaceae were observed in the
CAB of Pleuromamma spp. and Calanus spp. (in relatively
higher proportion than other copepods). The genera Aeromonas(family Aeromonadaceae) [62] and Escherichia
coli (family Enterobacteraceae) [63] are known to
have norV genes. The presence of these bacterial taxa inPleuromamma spp. maybe due to feeding of ciliates, flagellates
and detritus particles [11, 45]. This may be one
of the reasons to have a high proportion of norV and norW genes in these
copepods (Figure S4).