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Table 2 Summary of GISH results using two genomic DNA probes of North American Triatoma on the chromosomes of seven Triatoma species

From: Holocentric chromosome evolution in kissing bugs (Hemiptera: Reduviidae: Triatominae): diversification of repeated sequences

Species

T. rubrofasciata genomic DNA probe

T. dimidiata genomic DNA probe

T. rubrofasciata

Self-GISH. All autosomal pairs (11 half-bivalents) with strong hybridization signals in one or both chromosomal ends. Y chromosome intensively and totally labelled (Fig. 1a)

Only Y chromosome (Fig. 2d)

T. dimidiata

Only Y chromosome (Fig. 1c)

Self-GISH. All bivalents (10) with strong hybridization signals in both chromosomal ends. Y chromosome intensively and totally labelled (Fig. 2a, b)

T. lecticularia

Only Y chromosome (Fig. 1d)

Only Y chromosome.

T. nitida

Only Y chromosome (Fig. 1e)

Only Y chromosome (Fig. 2e)

T. barberi

Y chromosome plus one X chromosome (Fig. 1g)

Y chromosome plus one X chromosome

T. (Mepraia) spinolai

Only Y chromosome (Fig. 1h)

Only Y chromosome (Fig. 2f)

T. infestans (non-Andean lineage)

2–3 autosomal pairs with strong hybridization signals in 1 or 2 chromosomal ends plus the Y chromosome (Fig. 1i)

2–3 bivalents with strong hybridization signals in 1 or 2 chromosomal ends plus the Y chromosome (Fig. 2g)