The Proteocephalus Species-Agregate in Freshwater Centrarchid and Percid Fishes of the Nearctic Region (North America)

The Proteocephalus Species-Aggregate in Freshwater Centrarchid and Percid Fishes of the Nearctic Region (North America).

• Tomáš Scholz
• Anindo Choudhury
• Lucie Uhrová
• Jan Brabec

抄録

厳密には魚類の最終宿主に特異的であると思われる以下の3種が有効であると認められた。(1) Proteocephalus fluviatilisBangham, 1925 (新しい同義語 Proteocephalus osburniBangham, 1925 と Proteocephalus microcephalusHaderlie, 1953.Proteocephalus 'robustus' nomen nudum）のスモールマウスバスとラージマウスバス、Micropterus dolomieu（Lacépède）（型宿主）とMicropterus salmoides（Lacépède）（いずれもセントラーチ科）からのProteocephalus 'robustus' nomen nudum。(2) Proteocephalus luciopercaeWardle, 1932 (新シノニム Proteocephalus stizostethiHunter and Bangham, 1933)は、セイウチのSander vitreus (Mitchill) (型宿主)とサウガーのSander canadensis (Griffith et Smith) (Percidae)からのものである。(3) Proteocephalus pearseiLa Rue, 1919, イエローパーチ(Perca flavescens Mitchill)に寄生するProteocephalus pearseiLa Rue, 1919 (Percidae)。すべての種は、適切に熱固定された新しい資料に基づいて図示されています。走査型電子顕微鏡写真では，このProteocephalusの集合体には属さないスズキサナダムシP. luciopercaeとP. pearsei，およびスズキサナダムシP. fluviatilisとProteocephalus ambloplitis (Leidy, 1887)のスクレカスの写真が初めて掲載されています。

In the present paper, species of the Proteocephalus-aggregate de Chambrier, Zehnder, Vaucher, and Mariaux, 2004 (Cestoda: Proteocephalidae) reported from centrarchid and percid fishes in North America are reviewed, and their taxonomic status is critically assessed based on a study of type specimens and new material from Canada and the United States. The following 3 species, supposedly strictly specific to their fish definitive hosts, are recognized as valid: (1) Proteocephalus fluviatilisBangham, 1925 (new synonyms Proteocephalus osburniBangham, 1925 and Proteocephalus microcephalusHaderlie, 1953; Proteocephalus 'robustus' nomen nudum) from the smallmouth and largemouth bass, Micropterus dolomieu (Lacépède) (type host) and Micropterus salmoides (Lacépède) (both Centrarchidae); (2) Proteocephalus luciopercaeWardle, 1932 (new synonym Proteocephalus stizostethiHunter and Bangham, 1933) from the walleye, Sander vitreus (Mitchill) (type host), and sauger, Sander canadensis (Griffith et Smith) (Percidae); and (3) Proteocephalus pearseiLa Rue, 1919, a parasite of the yellow perch, Perca flavescens Mitchill (Percidae). All species are illustrated based on new, properly heat-fixed material. Scanning electron micrographs of the scoleces of percid tapeworms P. luciopercae and P. pearsei, as well as the bass tapeworms P. fluviatilis and Proteocephalus ambloplitis (Leidy, 1887), the latter of which does not belong to this Proteocephalus-aggregate, are provided for the first time together with a simple key to species identification of proteocephalids from centrarchiform and perciform teleost fishes.

© American Society of Parasitologists 2019.