Aken'ova T O, Lester R J
Department of Parasitology, University of Queensland, Brisbane, Australia.
J Parasitol. 1996 Dec;82(6):1017-23.
A total of 2,571 of the copepod Caligus epidemicus Hewitt from the yellow-fin bream, Acanthopagrus australis Günther, was examined for udonellids. Calinella myliobati Guberlet, 1936 was found on 3.3% of male copepods and 10.1% of female copepods. A new combination, Udonella myliobati (Guberlet, 1936) is proposed and its description emended. It differs from the type species Udonella caligorum Johnston, 1835 (as described by Price [1938]) in having a short egg filament and a median genital aperture. Only 1 of 102 chalimus larvae was infected, by a single adult worm. Juvenile udonellids common on mature copepods, were not found on any of the chalimus larvae. The highest number of U. myliobati (Guberlet, 1936), including hatching and unhatched eggs on 1 copepod, was 159. Adult and juvenile worms were attached mainly along the margins of the carapace and to the genital complex, whereas the majority of the eggs were attached to the ventral surface of the genital complex. The transfer of an adult worm from a male copepod to a female copepod was observed while the copepods were copulating. The large number of udonellids on a small population of mostly female copepods from the Brisbane River suggested that this was an aging population of copepods compared to the copepods collected from a semi-enclosed pond.
对来自黄鳍鲷（Acanthopagrus australis Günther）的2571只流行病锚头鳋（Caligus epidemicus Hewitt）桡足类动物进行了乌氏虫检查。在3.3%的雄性桡足类动物和10.1%的雌性桡足类动物上发现了1936年的迈氏卡林虫（Calinella myliobati Guberlet）。提出了一个新组合，即迈氏乌氏虫（Udonella myliobati (Guberlet, 1936)），并对其描述进行了修订。它与模式种1835年的卡氏乌氏虫（Udonella caligorum Johnston）（如普赖斯[1938]所描述）的不同之处在于，它有一条短的卵丝和一个位于中间的生殖孔。在102只无节幼体幼虫中，只有1只被1条成虫感染。在成熟桡足类动物上常见的幼体乌氏虫，在任何无节幼体幼虫上均未发现。在1只桡足类动物上，包括孵化和未孵化的卵在内，迈氏乌氏虫（U. myliobati (Guberlet, 193)）的最高数量为159只。成虫和幼虫主要附着在头胸甲边缘和生殖复合体上，而大多数卵附着在生殖复合体的腹面。在桡足类动物交配时，观察到1条成虫从雄性桡足类动物转移到雌性桡足类动物身上。来自布里斯班河的一小群主要为雌性的桡足类动物上有大量的乌氏虫，这表明与从半封闭池塘收集的桡足类动物相比，这是一个老化的桡足类动物种群。
