Acosta-Virgen Karla, López-Caballero Jorge, García-Prieto Luis, Mata-López Rosario
Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, C.P.04510, Mexico City, Mexico.
Colección Nacional de Helmintos, Instituto de Biología, Universidad Nacional Autónoma de México, CP 04510, Mexico City, Mexico ; Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Apartado 70-153, C.P. 04510, Mexico City, Mexico.
Zookeys. 2015 Jul 2(511):131-52. doi: 10.3897/zookeys.511.9571. eCollection 2015.
From August 2011 to November 2013, 68 opossums (8 Didelphis sp., 40 Didelphisvirginiana, 15 Didelphismarsupialis, and 5 Philanderopossum) were collected in 18 localities from 12 Mexican states. A total of 12,188 helminths representing 21 taxa were identified (6 trematodes, 2 cestodes, 3 acanthocephalans and 10 nematodes). Sixty-six new locality records, 9 new host records, and one species, the trematode Brachylaimadidelphus, is added to the composition of the helminth fauna of the opossums in Mexico. These data, in conjunction with previous records, bring the number of taxa parasitizing the Mexican terrestrial marsupials to 41. Among these species, we recognized a group of helminths typical of didelphids in other parts of the Americas. This group is constituted by the trematode Rhopaliascoronatus, the acanthocephalan Oligacanthorhynchusmicrocephalus and the nematodes Cruziatentaculata, Gnathostomaturgidum, and Turgidaturgida. In general, the helminth fauna of each didelphid species showed a stable taxonomic composition with respect to previously sampled sites. This situation suggests that the rate of accumulation of helminth species in the inventory of these 3 species of terrestrial marsupials in the Neotropical portion of Mexico is decreasing; however, new samplings in the Nearctic portion of this country will probably increase the richness of the helminthological inventory of this group of mammals.
2011年8月至2013年11月期间，在墨西哥12个州的18个地点采集了68只负鼠（8只中美负鼠属、40只北美负鼠、15只南美草原负鼠和5只北美灰负鼠）。共鉴定出12188条蠕虫，分属21个分类单元（6种吸虫、2种绦虫、3种棘头虫和10种线虫）。新增了66个新地点记录、9个新宿主记录，并且在墨西哥负鼠的蠕虫动物区系组成中增加了一个物种——吸虫短咽吸虫属。这些数据与之前的记录相结合，使寄生于墨西哥陆生有袋动物的分类单元数量达到41个。在这些物种中，我们识别出一组在美洲其他地区典型的负鼠蠕虫。这一组包括吸虫冠状异双盘吸虫、棘头虫小头寡棘吻虫以及线虫克鲁兹触手线虫、肿胀颚口线虫和肿胀线虫。总体而言，相对于之前采样的地点，每种负鼠的蠕虫动物区系显示出稳定的分类组成。这种情况表明，在墨西哥新热带地区这3种陆生有袋动物的蠕虫物种清单中的积累速率正在下降；然而，在该国近北极地区的新采样可能会增加这组哺乳动物蠕虫学清单的丰富度。
