The tail region contains a tegumental projection forming the fin fold. That membrane starts at the middle third of the tail and reaches to the end of the tail and then projects to the opposite side through its entire final third (Figure 1D).
The tail is long, without bifurcation, and contains a projection from the tegument, forming a membranous structure, the fin fold (Figure 1F).
(2001) regarding the proportions between the body and tail size, the length and width of the stylet, and the presence of a tail that presents a densely pleated dorsoventral terminal fin fold. However, the cercariae here observed and described differs from those described by Souza and Melo (2012) and by Boaventura et al.
Detail of the tail region with tegumental projection, named the fin fold. E.
Gene expression and functional analysis of zebrafish larval fin fold
Pigmentation Preflexion larvae (1.6-3.0 mm BL) typically have three equidistant blotches on the distal margin of the dorsal fin fold, located approximately between myomeres 6-9, 16-19, and 28-33, and an additional blotch located on the dorsal margin of the body between myomeres 28 and 33.
Unpaired fin development In early preflexion larvae, the dorsal, anal, and caudal fin folds are wide and distinct.
californica collected from mud flats at upper Newport Bay (CA) yielded 7 different types of cercariae when isolated in incubated finger bowls, including pleurolophocercous (single tail with fin folds
), furcocercous (forked tail), and xiphidio (single tail, no fin folds
) cercariae which were also found in this study.