Instituto de Investigaciones Oceanológicas, Universidad de Antofagasta, P.O. Box 170, Antofagasta, Chile.
Parasitol Res. 2011 Dec;109(6):1731-4. doi: 10.1007/s00436-011-2489-y. Epub 2011 Jun 17.
The fecundity, the relationship between fecundity and worm size, as well as abundance of the adult worm Proctoeces cf. lintoni (Digenea: Fellodistomidae) in four gastropod hosts (keyhole limpets of the genus Fissurella) and one vertebrate host, the clingfish Sicyases sanguineus from northern Chile, were compared. Worms obtained from Fissurella latimarginata were smaller than those from Fissurella maxima, Fissurella limbata, and S. sanguineus. The mean fecundity of parasites from Fissurella crassa was significantly lower than those from F. limbata, F. maxima and S. sanguineus. For all invertebrate hosts, there were significant, positive relationships between worm size and fecundity, and the slopes of the regression did not differ significantly for the invertebrate hosts. Parasites of the keyhole limpet F. limbata and the clingfish showed the highest intensity, prevalence, and mean fecundity, and these species must be considered to be the hosts in which P. cf lintoni shows the best fitness.
比较了智利北部的 4 种腹足纲宿主（Fissurella 属的匙形贝）和 1 种脊椎动物宿主（吸盘鱼属的 Sicyases sanguineus）中 Proctoeces cf. lintoni（双腔科：Fellodistomidae）的生殖力、生殖力与虫体大小的关系以及成虫丰度。从 Fissurella latimarginata 获得的蠕虫比从 Fissurella maxima、Fissurella limbata 和 S. sanguineus 获得的蠕虫小。Fissurella crassa 寄生虫的平均丰度明显低于 F. limbata、F. maxima 和 S. sanguineus。对于所有无脊椎动物宿主，蠕虫大小与生殖力之间存在显著的正相关关系，并且无脊椎动物宿主的回归线斜率没有显著差异。匙形贝 F. limbata 和吸盘鱼的寄生虫表现出最高的强度、流行率和平均丰度，这些物种必须被认为是 P. cf lintoni 表现出最佳适应性的宿主。
