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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)