Tarragona E L, Mangold A J, Mastropaolo M, Guglielmone A A, Nava S
Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina.
Cátedra de Parasitología y Enfermedades Parasitarias, Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina.
Med Vet Entomol. 2015 Sep;29(3):297-304. doi: 10.1111/mve.12110. Epub 2015 Mar 4.
The ecology of Amblyomma tonelliae (Ixodida: Ixodidae), including its seasonal distribution and the development periods of each stage, was investigated during a study carried out over two consecutive years in northwestern Argentina. In addition, the genetic variation of this tick was studied through analyses of 16S rDNA sequences. Amblyomma tonelliae has a 1-year lifecycle characterized by a long pre-moult period in larvae with no development of morphogenetic diapause. Larvae peak in abundance during late autumn and early winter; nymphs peak in abundance in spring, and adults do so from late spring to early summer. Amblyomma tonelliae shows a marked ecological preference for the driest areas of the Chaco ecoregion. In analyses of 16S rDNA sequences in genes from different populations of A. tonelliae, values for nucleotide diversity and the average number of nucleotide differences showed genetic diversity within this species to be low. No significant differences were found in comparisons among populations.
在阿根廷西北部连续开展的一项为期两年的研究中，对托氏钝眼蜱（硬蜱目：硬蜱科）的生态学进行了调查，包括其季节分布和各阶段的发育时期。此外，通过对16S rDNA序列的分析研究了这种蜱的遗传变异。托氏钝眼蜱具有1年的生命周期，其特点是幼虫的蜕皮前期较长，且不存在形态发生滞育。幼虫数量在秋末和初冬达到峰值；若虫数量在春季达到峰值，成虫数量从春末到初夏达到峰值。托氏钝眼蜱对查科生态区最干燥的地区表现出明显的生态偏好。在对不同种群的托氏钝眼蜱基因中的16S rDNA序列进行分析时，核苷酸多样性值和核苷酸差异平均数表明该物种内的遗传多样性较低。在种群间比较中未发现显著差异。
