scholarly journals A new species of Demidospermus (Platyhelminthes, Monogenea, Ancyrocephalidae) from the catfish Parapimelodus valenciennis in Samborombón Bay, Argentina

2011 ◽  
Vol 56 (2) ◽  
Author(s):  
Paula Marcotegui ◽  
Sergio Martorelli
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Congeneric Species ◽  
Samborombón Bay ◽  
A New Species ◽  
Samborombon Bay

AbstractDemidospermus annulus sp. nov. (Platyhelminthes, Monogenea, Ancyrocephalidae) is described from the gills of the catfish Parapimelodus valenciennis Lütken collected in Samborombón Bay, Argentina. The new species differs from all congeneric species mainly by the structure of the accessory piece of the male copulatory organ, the sclerotized ring-shaped vaginal aperture and the dorsal bar articulation.

Dactylogyrids (Monogenea) parasitic on marine fish from Peru including the description of a new species of Haliotrema Johnston & Tiegs, 1922 and two new species of Parancylodiscoides Caballero & C. & Bravo-Hollis, 1961

Zootaxa ◽  
2017 ◽  
Vol 4311 (1) ◽  
pp. 111 ◽  
Author(s):  
CELSO L. CRUCES ◽  
JHON D. CHERO ◽  
GLORIA SÁEZ ◽  
JOSÉ L. LUQUE
Keyword(s):  
New Species ◽  
Marine Fish ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
The Other ◽  
Congeneric Species ◽  
Two New Species ◽  
Parasitological Survey ◽  
A New Species

A parasitological survey searching dactylogyrids (Monogenea) infesting the gills of Peruvian marine fish was carried out during the 2015–2016 period. The gills of three teleosts species, 12 Hemanthias peruanus (Steindachner), 16 Hemanthias signifer (Garman) (Serranidae) and 4 Scarus perrico Jordan & Gilbert (Scaridae), were sampled. A new species of Haliotrema and two new species of Parancylodiscoides were described: Haliotrema sanchezae n. sp. from S. perrico, Parancylodiscoides peruensis n. sp. from H. peruanus and P. signiferi n. sp. from H. signifer. Haliotrema sanchezae n. sp. differs from other congeneric species by its male copulatory organ (tapered-shaped cirrus tube, with cylinder-shaped base and a membranous, blanket-shaped accessory piece), and the morphology of its transverse bars (X-shaped ventral bar and mask-shaped dorsal bar). Parancylodiscoides peruensis n. sp. differs from all other members of Parancylodiscoides by having a tapered-shaped copulatory organ with curved distal tip and a bell-shaped base having two lateral knobs and short arm. Parancylodiscoides signiferi n. sp. can be differentiated from its congeners by its male copulatory organ, which has tubular-shaped with a loop at distal end and a slightly expanded base having a short and broad arm. Present findings are added to the other 3 marine dactylogyrid previously reported from Peru. 

scholarly journals Dactylogyrids (Monogenea) parasitic on cichlids from northern Brazil, with description of two new species of Sciadicleithrum and new host and geographical records

2016 ◽  
Vol 61 (1) ◽  
Author(s):  
Fabiano Paschoal ◽  
Tomáš Scholz ◽  
Marcos Tavares-Dias ◽  
José L. Luque
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Congeneric Species ◽  
New Host ◽  
Cichlid Fishes ◽  
Two New Species ◽  
Northern Brazil

AbstractTwo new species of Sciadicleithrum Kritsky, Thatcher and Boeger, 1989 are described from two cichlids from the Araguarí River, State of Amapá, northern Brazil. Sciadicleithrum edgari n. sp. from Satanoperca jurupari (Heckel, 1840) differs from all congeneric species in the morphology (hook-shaped, with middle process and distally bifurcate) of the accessory piece of the male copulatory organ (MCO). Sciadiclethrum araguariensis n. sp. from Crenicichla labrina (Spix and Agassiz, 1831) can be distinguished from all other species by a Y-shaped accessory piece of MCO. In addition to the description of two new species, new host and geographical records of six dactylogyrid monogeneans from cichlid fishes are presented.

A new species of Cacatuocotyle (Monogenea, Dactylogyridae) parasitizing Astyanax spp. (Characiformes, Characidae) from Brazil, including molecular data and a key to species identification

2018 ◽  
Vol 63 (2) ◽  
pp. 261-269 ◽  
Author(s):  
Aline Cristina Zago ◽  
Lidiane Franceschini ◽  
Maria Isabel Müller ◽  
Reinaldo José da Silva
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Molecular Data ◽  
Ribosomal Gene ◽  
Key To Species ◽  
Astyanax Fasciatus ◽  
Morphological And Molecular Data ◽  
A New Species

Abstract The present study describes Cacatuocotyle papilionis n. sp. (Monogenea, Dactylogyridae) from the skin of the characid fishes Astyanax lacustris (Lütken, 1875) (=Astyanax altiparanae Garutti & Britski, 2000) and Astyanax fasciatus (Cuvier, 1819) (Characiformes, Characidae) from the Southeast of Brazil, supported by morphological and molecular data. The new species differs from all congeners, mainly due to the morphology of the ventral bar (resembling a butterfly), accessory piece, and the number of rings of the male copulatory organ (MCO), comprising a coiled tube with 4.5-5.5 counterclockwise rings. The first molecular data for this monogenean genus is provided in this study, using the partial sequences of the ribosomal gene (28S), as well as providing an identification key to the species.

Monogenoids (Polyonchoinea, Dactylogyridae) from Hydrolycus armatus (Characiformes, Cynodontidae) with the description of a new species of Rhinoxenus and the proposal of a new genus from the Xingu River, Pará, Brazil

Zootaxa ◽  
2019 ◽  
Vol 4700 (2) ◽  
pp. 229-245 ◽  
Author(s):  
GEUSIVAM B. SOARES ◽  
KEILA X. MAGALHÃES ◽  
ANA CAROLINA SILVA ◽  
JÂNIO S. CARNEIRO ◽  
LUCINEIA L. BARBOSA ◽  
...  
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Distal Portion ◽  
Ventral Anchor ◽  
Xingu River ◽  
Copulatory Complex ◽  
One New Species ◽  
A New Species

One new species of Rhinoxenus Kritsky, Boeger & Thatcher, 1988 from the nasal cavities and four new species of Mymarothecioides n. gen. from the gills are described in Hydrolycus armatus (Jardine & Schomburgk). They were collected in the Xingu River, Pará, Brazil. Rhinoxenus cachorra n. sp. is characterized by having a ventral anchor with inconspicuous roots, and point with fish-hook-like termination; copulatory complex comprising a spiraled male copulatory organ (MCO) with two counterclockwise coils, and an accessory piece with an expanded, bifurcated distal portion. Mymarothecioides n. gen. is proposed and characterized for species without eyes, with or without accessory chromatic granules; copulatory complex comprising articulated MCO, accessory piece; MCO a broad arcuate tube; an accessory piece with a hooked termination in the distal portion; a dextro or midventral non-sclerotized vagina; an anteromedial projection on the ventral bar. Mymarothecium whittingtoni Kritsky, Boeger & Jégu, 1996 is transferred to Mymarothecioides n. gen. as Mymarothecioides whittingtoni (Kritsky, Boeger & Jégu, 1996) n. comb. 

A new species of Sciadicleithrum (Monogenea, Dactylogyridae) parasitic on Geophagus brasiliensis (Perciformes, Cichlidae) from Guandu River, Southeastern Brazil

2008 ◽  
Vol 53 (3) ◽  
Author(s):  
Adriano Carvalho ◽  
Luiz Tavares ◽  
José Luque
Keyword(s):  
New Species ◽  
Rio De Janeiro ◽  
Male Copulatory Organ ◽  
Cichlid Fish ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Southeastern Brazil ◽  
Geophagus Brasiliensis ◽  
A New Species

AbstractSciadicleithrum guanduensis sp. nov. is described from the gills of the cichlid fish Geophagus brasiliensis (Quoy et Gaimard, 1824) from Guandu River, Seropédica, Rio de Janeiro, Brazil. The new species differs from all congeners by the accessory piece of the male copulatory organ, which comprises a small, delicate sheath with articulated appearance, and by the presence of a large unique umbelliform membrane on the ventral bar.

A new species of Aphanoblastella Kritsky, Mendoza-Franco and Scholz, 2000 (Monogenea, Dactylogyridae) parasitic on heptapterid catfish (Siluriformes) in the Neotropical region

2018 ◽  
Vol 63 (4) ◽  
pp. 772-780 ◽  
Author(s):  
Fabio H. Yamada ◽  
Aline A. Acosta ◽  
Priscilla de O. F. Yamada ◽  
Tomáš Scholz ◽  
Reinaldo J. da Silva
Keyword(s):  
New Species ◽  
Gene Sequence ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Molecular Data ◽  
Neotropical Region ◽  
Fish Host ◽  
Southeastern Brazil ◽  
A New Species

Abstract Aphanoblastella magna n. sp. is described from the gills of the heptapterid catfish Pimelodella avanhandavae Eigenmann, 1917 in southeastern Brazil (Paraná River Basin). This new species most closely resembles Aphanoblastella chagresii Mendoza-Franco, Aguirre-Macedo and Vidal-Martínez, 2007 described from a congeneric fish host in Panama, but can be distinguished by the shape of the accessory piece and shape and size of the ventral and dorsal bars. From the other species of the genus, A. magna n. sp. differs mainly in the shape of the male copulatory organ (MCO), which is sinuous, versus spirally coiled in other species of the genus, except for A. travassosi (Price, 1938), and by the accessory piece which resembles a ‘shoehorn’. Aphanoblastella magna n. sp. is the seventh species of the genus and the first dactylogyrid described from P. avanhandavae. A partial 28S rDNA gene sequence of the new species is also provided; it forms a monophyletic clade with two congeners for which molecular data are available.

scholarly journals Dactylogyrids (Platyhelminthes: Monogenoidea) Infecting the Gill Lamellae of Flatheads (Scorpaeniformes: Platycephalidae), with Proposal of Platycephalotrema n. gen. and Descriptions of New Species from Australia and Japan

Diversity ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 132
Author(s):  
Delane Kritsky ◽  
Masato Nitta
Keyword(s):  
New Species ◽  
Type Species ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Museum Specimens ◽  
Type Host ◽  
Gill Lamellae ◽  
Inegocia Japonica

Platycephalotrema n. gen. (Dactylogyridae) is proposed for four new species and 5 previously described species parasitizing the gills of flatheads (Scorpaeniformes: Platycephalidae) as follows: Platycephalotrema ogawai n. sp. (type species) from Platycephalus sp. 1 (type host) and Platycephalus sp. 2, both of Nakabo & Kai (2013) (locally known as “Yoshino-gochi” and “Ma-gochi,” respectively) (Japan); Platycephalotrema austrinum n. sp. from Platycephalus endrachtensis Quoy & Gaimard (type host) and Platycephalus sp. (Australia); Platycephalotrema bassensis (Hughes, 1928) n. comb. from Platycephalus bassensis Cuvier (Australia); Platycephalotrema koppa n. sp. from Platycephalus fuscus Cuvier (Australia); Platycephalotrema macassarensis (Yamaguti, 1963) n. comb. from Platycephalus indicus (Linnaeus) (China, Macassar); Platycephalotrema mastix n. sp. from P. fuscus and P. endrachtensis (Australia); Platycephalotrema platycephali (Yin & Sproston, 1948) n. comb. from P. indicus (China) and P. fuscus (Australia); Platycephalotrema sinensis (Yamaguti, 1963) n. comb. from Cociella punctata (Cuvier) (China); Platycephalotrema thysanophrydis (Yamaguti, 1937) n. comb. from Inegocia japonica (Cuvier), Inegocia ochiaii Imamura, and Cociella crocodilus (Cuvier) (Japan, China). Other species requiring further study but potentially members of Platycephalotrema include Ancyrocephalus vesiculosus Murray, 1931, Haliotrema indicum Tripathi, 1957, Haliotrema swatowensis Yao, Wang, Xia, & Chen, 1998, and Haliotrema pteroisi Paperna, 1972. The primary features differentiating Platycephalotrema include species having: (1) tandem gonads (testis postgermarial); (2) two prostatic reservoirs, each emptying independently into the base of the male copulatory organ; (3) a dextral vaginal pore and large vaginal vestibule; (4) dorsal and ventral pairs of morphologically similar anchors; (5) a ventral bar with spatulate ends; (6) a dorsal bar with bifurcated ends, and (7) absence of an accessory piece. The new species are described, and P. thysanophrydis is redescribed based on newly collected and museum specimens.

Urocleidoides spp. (Monogenea: Dactylogyridae) from the gills of Parodon nasus (Characiformes: Parodontidae) from a Brazilian stream with descriptions of two new species

Zootaxa ◽  
2021 ◽  
Vol 5081 (4) ◽  
pp. 535-550
Author(s):  
GLAUCYA SILVA DE OLIVEIRA ◽  
REINALDO JOSÉ DA SILVA ◽  
FERNANDO EMMANUEL GONÇALVES VIEIRA ◽  
ALINE ANGELINA ACOSTA
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Phylogenetic Analyses ◽  
Strong Support ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Paulo State ◽  
Tietê River ◽  
Two New Species ◽  
Copulatory Complex

Urocleidoides spp. are reported from the gills of 20 specimens of Parodon nasus (standard length 8.5–12 cm), from the Indiana stream, Tietê River, Upper Paraná River basin, municipality of Botucatu, São Paulo State, Brazil. Urocleoidoides tenuis and two new species were found. Urocleidoides indianensis n. sp. differs from its congeners mainly by the morphology of the vaginal sclerite that is robust, sickle-shaped, and forked at the distal end; and by the bulbous-shaped accessory piece of the male copulatory complex. Urocleidoides parodoni n. sp. resembles U. tenuis by presenting male copulatory organ with approximately 7 ½ counterclockwise rings, but differs by the morphology of the accessory piece (lobate with a small hook-like projection versus pincer-shaped), vaginal sclerite (thumb-like subterminal projection vs. presence of a distal hook), vaginal tube (conspicuously sclerotized vs. slightly sclerotized), shape of the ventral bar (bowed vs. wide V-shaped), ventral and dorsal anchors (robust base and short shaft vs. considerably less robust base and long shaft), and hooks (slender shank with a weakly sclerotized subunit at base vs. dilated shank). Sequences of the partial 28S rDNA gene of the dactylogyrids found in this study are provided. Phylogenetic analyses showed Urocledoides spp. from Parodontidae clustering together with strong support values. This study increases the number of valid Urocleidoides species to 39, and the number of species described from parodontid hosts to four.  

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