El Hafidi F, Berrada-Rkhami O, Benazzou T, Gabrion C
Laboratoire de Zoologie et Biologie Générale, Faculté des Sciences, Rabat, Morocco.
Parasitol Res. 1998;84(4):315-20. doi: 10.1007/s004360050402.
The two monogenean species Metamicrocotyla cephalus and Microcotyle mugilis have specific microhabitats on the gills of Mugil cephalus on which they may or may not coexist. M. cephalus is found in sector 1 of the posterior hemibranch of arch I. M. mugilis is found on the filaments of sector 5 of the posterior hemibranch of arch I. The coexistence of these two monogenean species on the same fish does not induce a change in their respective distribution, except for a marked preference of M. cephalus for the left side and of M. mugilis for the right. This 15-month-long study shows that when the two species of monogeneans coexist the infection prevalence and intensity are higher than in cases of monospecific infection. The specific character of the microhabitat, the apparent absence of interspecific competition, and the existence of positive species interactions are discussed.
两种单殖吸虫，即头状后微杯吸虫（Metamicrocotyla cephalus）和鲻微杯吸虫（Microcotyle mugilis），在鲻鱼（Mugil cephalus）的鳃上有特定的微生境，它们可能共存，也可能不共存。头状后微杯吸虫分布于第一鳃弓后半鳃的1区。鲻微杯吸虫分布于第一鳃弓后半鳃的5区的鳃丝上。这两种单殖吸虫在同一条鱼上共存，除了头状后微杯吸虫明显偏好左侧、鲻微杯吸虫明显偏好右侧外，它们各自的分布没有变化。这项为期15个月的研究表明，当这两种单殖吸虫共存时，感染率和感染强度高于单种感染的情况。文中还讨论了微生境的特异性、种间竞争的明显缺失以及物种间积极相互作用的存在。
