Bouguerche Chahinez, Gey Delphine, Justine Jean-Lou, Tazerouti Fadila
Université des Sciences et de la Technologie Houari Boumediene (U.S.T.H.B), Faculté des Sciences Biologiques, Département d'Écologie et Environnement, Laboratoire de Biodiversité et Environnement, Interactions et Génomes, BP 32, El Alia Bab Ezzouar, Alger, Algeria.
Service de Systématique moléculaire, UMS 2700 CNRS, Muséum National d'Histoire Naturelle, Sorbonne Universités, CP 26, 43 rue Cuvier, 75231, Paris Cedex 05, France.
Syst Parasitol. 2019 Mar;96(2):131-147. doi: 10.1007/s11230-019-09842-2. Epub 2019 Jan 30.
Parasite biodiversity of fish of the southern part of the Mediterranean sea is still incompletely explored. We describe here Microcotyle visa n. sp. from the gill filaments of the bluespotted seabream Pagrus caeruleostictus (Valenciennes) (Sparidae) collected off the Algerian coast. The identity of fish hosts was confirmed by barcoding. Microcotyle visa n. sp. is herein described and illustrated. Analysis of the cox1 gene of the monogeneans revealed minor intraspecific variation (1.4%), an order of magnitude lower than the distance between this species and other Microcotyle species (10-15 %). Microcotyle visa n. sp. is distinguished from Microcotyle erythrini van Beneden & Hesse, 1863, a congener infesting sparids, on the basis of morphological (size of clamps, number of testes) and molecular (cox1) differences. This is the fourth member of the genus known to parasitise a sparid host. A species of Paramicrocotyle sp. included in the molecular analysis was nested within a robust Microcotyle + Paramicrocotyle clade; in the absence of demonstrated molecular and morphological differences, we consider that Paramicrocotyle Caballero & Bravo-Hollis, 1972 is a junior synonym of Microcotyle van Beneden & Hesse, 1863 and transfer two species of Paramicrocotyle as Microcotyle danielcarrioni (Martinez & Barrantes, 1977) n. comb. and Microcotyle moyanoi (Villalba & Fernandes, 1986) n. comb.
地中海南部鱼类的寄生虫生物多样性仍未得到充分探索。我们在此描述了采自阿尔及利亚海岸蓝点鲷（Pagrus caeruleostictus (Valenciennes)，鲷科）鳃丝上的新种维萨微杯吸虫（Microcotyle visa n. sp.）。通过条形码技术确认了鱼类宿主的身份。本文对维萨微杯吸虫进行了描述和图示。对单殖吸虫的细胞色素氧化酶亚基1（cox1）基因分析显示种内变异较小（1.4%），比该物种与其他微杯吸虫属物种之间的距离低一个数量级（10 - 15%）。基于形态学（夹子大小、睾丸数量）和分子（cox1）差异，维萨微杯吸虫与寄生于鲷科鱼类的同属物种埃氏微杯吸虫（Microcotyle erythrini van Beneden & Hesse, 1863）相区分。这是已知寄生于鲷科宿主的该属的第四个成员。分子分析中包含的一个副微杯吸虫属（Paramicrocotyle sp.）物种嵌套在一个强大的微杯吸虫属 + 副微杯吸虫属分支内；由于没有显示出分子和形态上的差异，我们认为副微杯吸虫属（Paramicrocotyle Caballero & Bravo - Hollis, 1972）是微杯吸虫属（Microcotyle van Beneden & Hesse, 1863）的次异名，并将两个副微杯吸虫属物种转移为丹尼尔卡里翁微杯吸虫（Microcotyle danielcarrioni (Martinez & Barrantes, 1977) n. comb.）和莫亚诺微杯吸虫（Microcotyle moyanoi (Villalba & Fernandes, 1986) n. comb.）。
