TAPEWORMS (CESTODA) OF ICTALURID CATFISHES (SILURIFORMES) IN NORTH AMERICA: REDESCRIPTION OF TYPE SPECIES OF TWO GENERA AND PROPOSAL OF ESSEXIELLINAE N. SUBFAM

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F20%3A00540477" target="_blank" >RIV/60077344:_____/20:00540477 - isvavai.cz</a>

Result on the web

<a href="https://bioone.org/journals/journal-of-parasitology/volume-106/issue-4/20-12/Tapeworms-Cestoda-of-Ictalurid-Catfishes-Siluriformes-in-North-America/10.1645/20-12.short" target="_blank" >https://bioone.org/journals/journal-of-parasitology/volume-106/issue-4/20-12/Tapeworms-Cestoda-of-Ictalurid-Catfishes-Siluriformes-in-North-America/10.1645/20-12.short</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1645/20-12" target="_blank" >10.1645/20-12</a>

Result language

angličtina

Original language name

TAPEWORMS (CESTODA) OF ICTALURID CATFISHES (SILURIFORMES) IN NORTH AMERICA: REDESCRIPTION OF TYPE SPECIES OF TWO GENERA AND PROPOSAL OF ESSEXIELLINAE N. SUBFAM

Original language description

Ictalurid catfishes (Siluriformes) in North America harbor proteocephalid tapeworms of the subfamily Corallobothriinae. Type species of 2 of 3 genera of these tapeworms from ictalurids are redescribed, based on museum and newly collected material. Essexiella fimbriata (Essex, 1928) is typified mainly by a wide, umbrella-shaped scolex with a metascolex formed by numerous folds of tissue, anteriorly directed suckers without sphincters, vitellarium bent inwards posteriorly, “flower-shaped” uterus (with anterior, lateral, and posterior diverticula), and a conspicuously pre-equatorial genital atrium. Verified host records of this cestode are only from 3 species of Ictalurus Rafinesque, 1820. Megathylacoides giganteum (Essex, 1928), which seems to be specific to the channel catfish (Ictalurus punctatus), possesses a globular scolex, with a weakly developed metascolex formed by tissue folds posterior to the suckers, anterolaterally directed suckers with large semilunar sphincters, proglottids that are widest at the level of the genital atrium at the anterior third of the proglottid, and uterine diverticula that do not reach the vitelline follicles laterally. A new subfamily, Essexiellinae Scholz and Bareak, is proposed to accommodate species of Essexiella Scholz, de Chambrier, Mariaux and Kuchta, 2011 (type genus), Megathylacoides Jones, Kerley and Sneed, 1956, and Corallotaenia Freze, 1965 from ictalurid catfishes in the Nearctic Region. These tapeworms possess a metascolex, medullary genital organs, uterus lined with numerous chromophilic cells, pre-equatorial genital atrium, and uterine development of type 2. The new subfamily was monophyletic in all molecular phylogenetic analyses, being most closely related to 3 Neotropical proteocephalids from the redtail catfish, Phractocephalus hemioliopterus (Bloch and Schneider, 1801), but distant from all remaining proteocephalid tapeworms from freshwater fishes in North America.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10613 - Zoology

Project

<a href="/en/project/LTAUSA18010" target="_blank" >LTAUSA18010: Unraveling diversity of parasites of cypriniform fishes in North America: a key to understanding evolutionary processes</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Parasitology

ISSN

0022-3395

e-ISSN

—

Volume of the periodical

106

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

20

Pages from-to

444-463

UT code for WoS article

000558635100002

EID of the result in the Scopus database

2-s2.0-85087705392