Biological aspects of crosses between populations of Triatoma mexicana (Hemiptera: Reduviidae: Triatominae)

被引:2
作者
Martinez-Ibarra, Jose Alejandro [1 ,2 ]
Villagran-Herrera, Maria Elena [3 ]
de Diego-Cabrera, Jose Antonio [4 ]
Michel-Parra, J. Guadalupe [2 ]
机构
[1] Univ Guadalajara, Ctr Univ Sur, Dept Ciencias Nat, Lab Entomol Med, Ave Enrique Arreola Silva 883, Ciudad Guzman 49000, Jalisco, Mexico
[2] Univ Guadalajara, Ctr Univ Sur, Dept Ciencias Nat, Cuerpo Acad Cuencas Humedales & Sustentabil, Ave Enrique Arreola Silva 883, Ciudad Guzman 49000, Jalisco, Mexico
[3] Univ Autonoma Queretaro, Fac Med, Dept Invest Biomed, Santiago De Queretaro, Queretaro, Mexico
[4] Univ Autonoma Madrid, Fac Med, Dept Med Prevent & Salud Publ, Madrid, Spain
关键词
biology; reproductive isolation; Chagas disease; Mexico; triatomines;
D O I
10.1093/jme/tjad016
中图分类号
Q96 [昆虫学];
学科分类号
摘要
We examined the degree of reproductive isolation in four populations of Triatoma mexicana Herrich-Schaeffer from Mexico along with fertility and the segregation of morphological characteristics in two generations of offspring from crosses between these populations. The percentage of couples with (fertile) offspring was high among all sets of crosses between cohorts from Penamiller, Meztitlan, and Orizabita. It was low in crosses involving a cohort from Tierra Blanca, mainly in crosses with Meztitlan. Among sets of crosses involving Tierra Blanca specimens, whole first-generation (F1) individuals were morphologically similar to the specimens from other locations. All F1 individuals of crosses involving Penamiller looked like Penamiller. However, in crosses between F1 and F1 progeny of parental crosses, alleles for size, overall color, length of head, ante and post ocular distance, and humeral angle apparently had Mendelian dominant/recessive relationships. The cohorts from Penamiller and Meztitlan seemed to be dominant with respect to Orizabita and Tierra Blanca. Results indicated that cohorts from Penamiller, Meztitlan, and Orizabita were not reproductively isolated. In contrast, Tierra Blanca was reproductively isolated from the other three populations of T. mexicana and is apparently undergoing an early divergence process of speciation for allopatry.
引用
收藏
页码:470 / 477
页数:8
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