Per os infectivity of white spot syndrome virus (WSSV) in white-legged shrimp (Litopenaeus vannamei) and role of peritrophic membrane

Table 2 The presence of peritrophic membrane in P. vannamei shrimp without and with a peroral flush.

Peroral flush	Molt stage	No. of shrimp	PM confirmed by FITC- WGA			No. of shrimp with the presence of PM
Peroral flush	Molt stage	No. of shrimp	S₂	S₄	S₆	No. of shrimp with the presence of PM
No (Control)	B	3	+++	+++	+++	3/3
	C	3	+++	+++	+++	3/3
	D1	3	+++	+++	+++	3/3
	D2	3	+++	+++	+++	3/3
Yes	B	3	−−−	−−−	−−−	0/3
	C	3	−−−	−−−	−−−	0/3
	D1	3	−−−	−−−	−−−	0/3
	D2	3	−−−	−−−	−−−	0/3

ISSN: 1297-9716