Table 2 Characteristics of Teratorn-like viruses within teleost genomes

S. salar

intact

~ 8

integrated (contig-mediated link between Teratorn-like virus and genomic region)

Some piggyBac copies exist near Teratorn-like virus

TIRs of piggyBac-like element exist for a single contig (Aswad A. and Katzourakis A., 2017)

O. mykiss

degraded

–

integrated (ORF degradation)

–

Unidentified (degradation of Teratorn-like virus sequences)

O. kisutch

intact

1–5

integrated (contig-mediated link between Teratorn-like virus and genomic region)

Some piggyBac copies exist near Teratorn-like virus

Unidentified (small number of blast hits)

E. lucius

partially degraded

~ 8

integrated (contig-mediated link between Teratorn-like virus and genomic region)

–

Unidentified (small number of blast hits)

P. magnuspinnatus

intact

–

unkonwn

–

Unidentified (small number of blast hits)

P. argenteus

unknown (contigs too short)

–

unknown

–

Unidentified (contigs too short)

O. latipes

intact

~ 25, ~ 5

integrated (BAC sequencing)

Fused

TIRs of piggyBac-like element exist

2 subtypes

A. limnaeus

intact

1–2, ~ 4

likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region)

some piggyBac copies exist near Teratorn-like virus

Unidentified (gaps between Teratorn-like virus and genomic region)

2 subtypes

N. furzeri

intact

1–2

unknown

Consistent link between piggyBac and Teratorn-like virus

Unidentified (small number of blast hits)

2 subtypes?

K. marmoartus

intact

–

unknown

–

Unidentified (contigs too short)

2 subtypes

A. citrinellus

intact

–

likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region)

–

Unidentified (small number of blast hits)

O. niloticus

partially degraded

~ 12, ~ 2

integrated (fosmid sequencing, scaffold-mediated link between Teratorn-like virus and genomic region, transposon insertion)

Consistent link between piggyBac and Teratorn-like virus sequence for subtype 1

Subtype 1: TIRs of piggyBac-like element exist

Subtype 2: unidentified

2 subtypes

N. brichardi

intact

~ 2

likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region)

–

Unidentified (small number of blast hits)

H. burtoni

intact

~ 1

unknown

–

Unidentified (small number of blast hits)

P. nyererei

unknown (contigs too short)

–

unknown

–

Unidentified (contigs too short)

at least 2 subtypes?

M. auratus

unknown (contigs too short)

–

unknown

–

Unidentified (contigs too short)

A. polyacanthus

intact

–

likely integrated(scaffold-mediated link between Teratorn -like virus and genomic region)

–

Unidentified (small number of blast hits)

C. semilaevis

degraded

–

integrated (ORF degradation)

some piggyBac copies exist near Teratorn-like virus

Unidentified (degradation of Teratorn-like virus sequences)

C. rhenanus

unknown (contigs too short)

–

unknown

–

Unidentified (contigs too short)

L. crocea

intact

~ 18

likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region, transposon insertion)

Consistent link between piggyBac and Teratorn-like virus

Unidentified (gaps between Teratorn-like virus and genomic region)

M. albus

intact (subtype2), degraded (subtype1)

~ 0.5, ~ 2

integrated (contig-mediated link between Teratorn-like virus and genomic region, ORF degradation)

Consistent link between piggyBac and Teratorn-like virus

Unidentified (small number of blast hits)

2 subtypes

M. mola

degraded

–

integrated (contig-mediated link between Teratorn-like virus and genomic region, ORF degradation)

Consistent link between piggyBac and Teratorn-like virus

Unidentified (small number of blast hits)

2 subtypes