"Ctenophores and medusae were collected in nets of 2 different mesh sizes: 500um (June 2003-May2004) and 200um (July 2004-May2005). To determine whether there were differences in catching efficiency between test, we performed replicate tows (n=2) using both net types at each station after May 2005. There was no significant difference in volume-specific biovolumes (F=0.53, p=0.71) and densities (F=0.34, p=0.85) of Mnemiopsis leidyi collected in the 200um and 500um nets. Supplemental tows using 1600um mesh nets were conducted between May and August 2005 and 2006 to collect large scyphomedusae.
Mesoplankton (>200um) and Mnemiopsis leidyi larvae were sampled from surface waters (0 to 2m) at each station during 2004-2006) using a 0.5m diameter net (200um mesh)."
Condon RH, Steinberg DK (2008) Development, biological regulation, and fate of ctenophore blooms in the York River estuary, Chesapeake Bay. Marine Biology Progress Series 368:153-168