Table 1.
Geographical origin and chromosomal traits of seven Triatoma species analysed in the present studyk
| Species and male diploid chromosome number (2n) | Geographical origin | %, chromosome location and size of autosomal C-heterochromatin |
|---|---|---|
|
T. rubrofasciata
(2n = 22A + X1X2Y) |
Vietnam, Hanoi, Tu Liem district. P. 21°2′48″N, 105°44′54″E |
40%; 11 II with C-blocks in both chromosomal ends [22] |
|
T. dimidiata
(2n = 20A + X1X2Y) |
Guatemala, Jutiapa, Carrizal. D. 14°25′48″N, 89°57′28″W |
10%; 10 II with C-dots in both ends [23] |
|
T. barberi
(2n = 20A + X1X2Y) |
Mexico, Queretaro, La Cueva. P. 20°29′4″N, 100°26′20″W |
35%; 10 II with C-blocks in both ends [15] |
|
T. nitida
(2n = 18A + X1X2Y) |
Guatemala, Quiché, Zacualpa, D. 15°1′34″N, 90°52′42″W |
25%; 2 II almost entirely C-heterochromatic [15] |
|
T. lecticularia
(2n = 20A + XY) |
Insectary CDC (Atlanta). Origin: USA, Oklahoma, Walkiria. | 30%; 10 II with C-blocks in both ends [15] |
|
T. infestans (non-Andean lineage) (2n = 20A + XY) |
Argentina, Chaco, Tres Estacas. P. 26°54′30″S, 51°40′23″W |
24–30%; 2–4 II with C-blocks in one or both ends [24] |
|
T. (Mepraia) spinolai
(2n = 20A + X1X2Y) |
Chile, Metropolitan Region of Santiago, Colina. S. 33°11′53″S, 70°39′42″W |
15%; 10 II with C-dots in both ends [25] |
Abbreviations: A autosomes, D domestic, P peridomestic, S sylvatic, II bivalents