Ketchum H R, Teel P D, Strey O F, Longnecker M T
Texas A&M University, Department of Entomology, 412 Heep Center, TAMU 2475, College Station, TX 77843-2475, USA.
Vet Parasitol. 2006 Aug 31;140(1-2):143-7. doi: 10.1016/j.vetpar.2006.03.020. Epub 2006 May 18.
Gulf Coast ticks collected from Refugio Co., TX and Osage Co., KS are reproductively compatible despite differences in genetic haplotypes, geographic separation and seasonal phenologies. Two heifers per mating combination (TX males x TX females, KS males x KS females, TX males x KS females, KS males x TX females) were each infested with 360 pairs of Gulf Coast ticks. Only mean pre-oviposition and mean egg conversion efficiency index for the Texas male-Kansas female mating were significantly different (p<0.05) from other mating treatments. These females began oviposition 1-day later and used 4% less body mass toward egg production when compared to site-specific matings. However, the overall trend in reproductive performance of reciprocal tick matings was slightly lower than that of site-specific matings. There appear to be no pre-zygotic barriers to mating among Gulf Coast ticks from these Texas and Kansas populations.
尽管来自德克萨斯州雷富吉奥县和堪萨斯州奥色治县的墨西哥湾沿岸蜱在遗传单倍型、地理隔离和季节物候方面存在差异，但它们在生殖上是兼容的。每个交配组合（德克萨斯州雄性×德克萨斯州雌性、堪萨斯州雄性×堪萨斯州雌性、德克萨斯州雄性×堪萨斯州雌性、堪萨斯州雄性×德克萨斯州雌性）使用两头小母牛，每头小母牛感染360对墨西哥湾沿岸蜱。只有德克萨斯州雄性与堪萨斯州雌性交配的平均产卵前期和平均卵转化效率指数与其他交配处理有显著差异（p<0.05）。与特定地点交配相比，这些雌性在1天后开始产卵，用于产卵的体重减少4%。然而，蜱的相互交配的生殖性能总体趋势略低于特定地点交配。来自德克萨斯州和堪萨斯州的这些种群的墨西哥湾沿岸蜱之间似乎不存在交配前的障碍。
