Two new species of Scyphophyllidium (Cestoda: Phyllobothriidea) from Chaenogaleus macrostoma (Bleeker) (Elasmobranchii: Carcharhiniformes) from the Persian Gulf, Iran.

IF 1 4区医学 Q4 PARASITOLOGY

Systematic Parasitology Pub Date : 2024-01-30 DOI:10.1007/s11230-023-10141-0

Hasan Kouchaki Panchah, Mohammad Haseli

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Abstract

Two new species of Scyphophyllidium Woodland, 1927 are described from the Hooktooth shark, Chaenogaleus macrostoma (Bleeker), from the Persian Gulf, Iran. Scyphophyllidium hormuziense n. sp. is assigned to morphological category 2 of its genus because it possesses bothridial marginal loculi and an apical sucker on each flat bothridium, and lacks bothridial facial loculi. Within category 2, it is distinguished from its congeners, except for S. janineae (Ruhnke, Healy and Shapero, 2006), by possessing, rather than lacking, a prominent cephalic peduncle. It differs from S. janineae in the distribution of the vitelline follicles. Scyphophyllidium iraniense n. sp. is assigned to morphological category 5 because its bothridia are essentially flat and lack proximal apertures, marginal loculi, facial loci and semi-circular muscle bands, and bears weakly serrate gladiate spinitriches on its distal bothridial surfaces. Within its morphological category, the presence of a long cephalic peduncle distinguishes S. iraniense n. sp. from its congeners lacking this structure or possessing a short cephalic peduncle. It further differs from S. arnoldi (Ruhnke and Thompson, 2006) and S. typicum (Subhapradha, 1955) in total length, from S. paulum (Linton, 1897) in lacking a conspicuous band of muscles along the locular periphery of the bothridia, and from S. kirstenae (Ruhnke, Healy and Shapero, 2006) in the distribution of the vitelline follicles. This study brings the number of the valid Scyphophyllidium species of the Persian Gulf to five.

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来自伊朗波斯湾 Chaenogaleus macrostoma (Bleeker) (Elasmobranchii: Carcharhiniformes) 的两个 Scyphophyllidium 新种（绦虫纲：Phylobothriidea）。

本研究描述了来自伊朗波斯湾钩齿鲨 Chaenogaleus macrostoma (Bleeker) 的两个 Scyphophyllidium Woodland, 1927 新种。Scyphophyllidium hormuziense n. sp.被归入其属的形态学第 2 类，因为它具有两鳃边缘位点和每个扁平两鳃上的顶端吸盘，但缺乏两鳃面部位点。除了 S. janineae（Ruhnke、Healy 和 Shapero，2006 年）之外，在第 2 类中，它与其他同属种的区别在于它拥有而不是缺少一个突出的头梗。它与 S. janineae 的不同之处在于卵黄蓇葖果的分布。Scyphophyllidium iraniense n. sp.被归入形态学类别 5，因为它的双纤毛虫基本上是扁平的，缺乏下端孔、边缘室、面部室和半圆形肌带，并且在其双纤毛虫的远端表面有弱锯齿的角状棘刺。在其形态类别中，S. iraniense n. sp.在总长度上，它与 S. arnoldi（Ruhnke 与 Thompson，2006 年）和 S. typicum（Subhapradha，1955 年）进一步不同；与 S. paulum（Linton，1897 年）的不同之处在于两鳃的局部外围没有明显的肌肉带；与 S. kirstenae（Ruhnke、Healy 与 Shapero，2006 年）的不同之处在于卵黄蓇葖果的分布。这项研究使波斯湾有效的 Scyphophyllidium 种类达到 5 个。

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来源期刊

Systematic Parasitology 医学-寄生虫学

CiteScore

2.20

自引率

23.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Systematic Parasitology publishes papers on the systematics, taxonomy and nomenclature of the following groups: Nematoda (including plant-parasitic), Monogenea, Digenea, Cestoda, Acanthocephala, Aspidogastrea, Cestodaria, Arthropoda (parasitic copepods, hymenopterans, mites, ticks, etc.), Protozoa (parasitic groups), and parasitic genera in other groups, such as Mollusca, Turbelleria, etc. Systematic Parasitology publishes fully illustrated research papers, brief communications, and fully illustrated major revisions. In order to maintain high standards, all contributors describing new taxa are asked to state clearly where the holotype is deposited and to make paratypes available for examination by the referees. It is recognized that, in some cases, this may cause problems for the authors, but it is hoped that by adhering to this rule authors may be protected against rapid synonymy of their taxa, and the types will be preserved for posterity.