Muñoz Gabriela, George-Nascimento Mario, Bray Rodney A
Acta Parasitol. 2017 Mar 1;62(1):50-62. doi: 10.1515/ap-2017-0006.
Two new digenean species are described from the intertidal blenny Scartichthys viridis (Valenciennes) (Blenniidae) collected off the coasts of Chile. The digenean Monorchimacradena viridis n. sp. (Lecithasteridae: Macradenininae) differs from the only known species described in the genus, M. acanthuri Nahhas and Cable 1964, in the presence of Drüsenmagen in the caeca, the location of the seminal vesicle between the testis and ovary (anterior to the testis in M. viridis n. sp.), and the pre-ovarian vitellarium. Megasolena littoralis n. sp. (Haploporidae), which is also reported from Scartichthys gigas (Steindachner), differs from the five valid species of Megasolena in that the post-caecal region (from the posterior edge of the caeca to the end of the body) is larger in M. viridis n. sp., meaning that the caeca are shortest in this species. Also, M. littoralis n. sp. is distinguished, from the other congeneric species, in a combination of characteristics, e.g., body length, suckers, pharynx, testes, hermaphroditic sac and sucker-length ratio. Sequences of ITS2 rDNA were generated for specimens of both species from various localities, indicating that it was invariant within the species. This study describes species of Monorchimacradena and Megasolena in Chilean waters, here reported for the first time off the Pacific Coast of South America.
从智利海岸采集的潮间带鳚鱼绿拟鲈（瓦伦西恩斯）（鳚科）中发现了两种新的复殖吸虫。复殖吸虫绿单睾腺吸虫新种（微茎科：单睾腺亚科）与该属中唯一已知的物种棘鳍单睾腺吸虫（纳哈斯和凯布尔，1964年）不同，在于盲肠中有腺胃，精囊位于睾丸和卵巢之间（在绿单睾腺吸虫新种中位于睾丸前方），以及卵巢前的卵黄腺。滨海巨体吸虫新种（单孔科），也在大拟鲈中被发现，与巨体吸虫属的五个有效物种不同之处在于，在绿单睾腺吸虫新种中盲肠后区域（从盲肠后缘到身体末端）更大，这意味着该物种的盲肠最短。此外，滨海巨体吸虫新种与其他同属物种的区别在于一系列特征的组合，例如体长、吸盘、咽、睾丸、两性囊和吸盘长度比。从不同地点采集的这两个物种的标本中生成了ITS2 rDNA序列，表明该序列在物种内是不变的。本研究描述了智利海域的单睾腺吸虫属和巨体吸虫属物种，这是首次在南美洲太平洋沿岸报道。
