Table 1. Fifteen genomes utilized in the present study and their host species.

Viral species/strain	Genus	Host species	GenBank accession no. (reference)
Frog virus 3 (FV3)	Ranavirus	Rana pipiens	AY548484 (Tan et al., 2004)
Soft-shelled turtle iridovirus (STIV)	Ranavirus	Trionyx sinensis	EU627010 (Huang et al., 2009)
Rana grylio virus (RGV)	Ranavirus	Rana grylio	JQ654586 (Lei et al., 2012)
Tiger frog virus (TFV)	Ranavirus	Rana tigrina	AF389451 (He et al., 2001)
Common midwife toad virus (CMTV)	Ranavirus	Alytes obstetricans	JQ231222 (Mavian et al., 2012a)
Ambystoma tigrinum virus (ATV)	Ranavirus	Ambystoma tigrinum	AY150217 (Jancovich et al., 2003)
Epizootic haematopoietic necrosis virus (EHNV)	Ranavirus	Oncorhynchus mykiss	FJ433873 (Jancovich et al., 2010)
European sheatfish virus (ESV)	Ranavirus	Silurus glanis	JQ724856 (Mavian et al., 2012b)
Singapore grouper iridovirus (SGIV)	Ranavirus	Epinephelus tauvina	AY521625 (Song et al., 2004)
Grouper iridovirus (GIV)	Ranavirus	Epinephelus awoara	AY666015 (Tsai et al., 2005)
Lymphocystis disease virus 1 (LCDV1)	Lymphocystivirus	Platichthys flesus	L63545 (Tidona & Darai, 1997)
Lymphocystis disease virus China (LCDVC)	Lymphocystivirus	Paralichthys olivaceus	AY380826 (Zhang et al., 2004)
Infectious spleen and kidney necrosis virus (ISKNV)	Megalocytivirus	Siniperca chuatsi	AF371960 (He et al., 2002)
Orange-spotted grouper virus (OSGIV)	Megalocytivirus	Epinephelus coioides	AY894343 (Lü et al., 2005)
Rock bream iridovirus (RBIV)	Megalocytivirus	Oplegnathus fasciatus	AY532606 (Do et al., 2004)