scholarly journals Overview of South African Dendromonocotyle (Monogenea : Monocotylidae), with descriptions of 2 new species from stingrays (Dasyatidae) kept in public aquaria

Zootaxa ◽  
2008 ◽  
Vol 1826 (1) ◽  
pp. 26 ◽  
Author(s):  
DAVID VAUGHAN ◽  
LESLIE CHISHOLM ◽  
KEVIN CHRISTISON
Keyword(s):  
New Species ◽  
South African ◽  
Male Copulatory Organ ◽  
Cape Town ◽  
Proximal Part ◽  
Copulatory Organ ◽  
Distal Portion ◽  
Diagnostic Character ◽  
Two New Species

Two new species, Dendromonocotyle citrosa n. sp. off Dasyatis chrysonota (Smith) from Two Oceans Aquarium in Cape Town and off Himantura gerrardi (Gray) from uShaka Sea World in Durban and D. ukuthena n. sp. off H. gerrardi and H. uarnak (Forsskal) also from uShaka Sea World in Durban, are described. These can be distinguished from previously described Dendromonocotyle species by the morphology of the distal portion of the male copulatory organ and the proximal part of the vagina. Vaginal morphology is proposed as an important diagnostic character for species in the genus. Dendromonocotyle colorni Chisholm, Whittington & Kearn, 2001 which was originally recorded from H. uarnak in Israel, was discovered on H. uarnak sympatrically with D. ukuthena n. sp. and with D. citrosa n. sp. and D. ukuthena n. sp. off H. gerrardi. Minor differences in the number of papillary sclerites, the presence of septal tripartite sclerites and in the number of eyespots were seen between D. colorni collected from H. uarnak and H. gerrardi from uShaka Sea World and those originally described off H. uarnak from Israel. We demonstrate that the position of the marginal hooklets can be used to determine the orientation of the haptor of all representative Dendromonocotyle species with or without hamuli. We conclude that Dendromonocotyle species may not be as host-specific as previously believed and that minor differences in morphology are host or geographically induced.

Two new species of Sciadicleithrum (Monogenea, Dactylogyridae) parasites of Neotropical cichlid fishes from the Paraná River, Brazil

2009 ◽  
Vol 54 (1) ◽  
Author(s):  
Fábio Yamada ◽  
Ricardo Takemoto ◽  
Sybelle Bellay ◽  
Gilberto Pavanelli
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Distal Portion ◽  
Paraná River ◽  
Dorsal Anchor ◽  
Cichlid Fishes ◽  
Parana River ◽  
Two New Species

AbstractTwo new species of Sciadicleithrum are described from the gills of Neotropical cichlid fishes collected from Paraná River, Brazil. Sciadicleithrum satanopercae sp. nov. is described from the gills of Satanoperca pappaterra and differs from congeners by having a dorsal anchor with the distal portion complex and the inner margin with a “denticulum” between shaft and point. Sciadicleithrum joanae sp. nov. is described from the gills of Crenicichla niederleinii and C. britskii collected from Paraná River. Sciadicleithrum joanae sp. nov. differs from congeners by having a male copulatory organ comprising about half a clockwise loop and a vaginal pore “bulb-shaped”.

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.  

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.

Three diplectanid monogeneans from marine finfish (Epinephelus spp.) in the Far East

1999 ◽  
Vol 73 (4) ◽  
pp. 301-312 ◽  
Author(s):  
Si Si Hla Bu ◽  
T.S. Leong ◽  
S.Y. Wong ◽  
Y.S.N. Woo ◽  
R.W.T. Foo
Keyword(s):  
Hong Kong ◽  
New Species ◽  
Distal Part ◽  
Far East ◽  
Proximal Part ◽  
Copulatory Organ ◽  
Epinephelus Coioides ◽  
The Far East ◽  
Two New Species

Two new species of diplectanid monogeneans, Diplectanum grouperi and Pseudorhabdosynochus coioidesis from the marine finfish Epinephelus coioides and E. aerolatus(Serranidae), cultured in floating cages in Malaysia, Indonesia and Hong Kong, were described and compared with P. lantauensis Beverley-Burton and Suriano, 1981 from the same hosts. There is no other close species sharing the features of Diplectanum grouperi. The possession of a copulatory organ with an open cup-like proximal part and a narrow tubular distal part is a main distinguished feature of D. grouperi. Pseudorhabdosynochus coioides is most closely related to P. epinepheli Yamaguti, 1938, but can be distinguished from it by the shape and the size of the haptor, hamuli, copulatory organ, the lack of a muscular bulbus ejaculatorius, a greater number of rows in the squamodiscs and the location of the testis. Pseudorhabdosynochus lantauensis from the present hosts differs from that described from the original hosts, Epinephelus brunneus and E. fario in the shape of the dorsal bar and vagina.

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. 

New species of Anacanthorus (Dactylogyridae: Anacanthorinae) from the gills of Hoplerythrinus unitaeniatus and Erythrinus erythrinus (Characiformes: Erythrinidae) of the coastal drainage in the Eastern Amazon, Brazil

Zootaxa ◽  
2019 ◽  
Vol 4615 (2) ◽  
pp. 303
Author(s):  
JOÃO F. SANTOS NETO ◽  
JANICE MURIEL-CUNHA ◽  
MARCUS V. DOMINGUES
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Distal Portion ◽  
Distal Region ◽  
Parasite Diversity ◽  
Drainage Systems ◽  
Host Parasite ◽  
Hoplerythrinus Unitaeniatus

Species of Anacanthorus are described from the gills of Hoplerythrinus unitaeniatus and Erythrinus erythrinus of drainage systems in the Northeastern Pará State, Brazil. Anacanthorus scyphophallus sp. n. has a male copulatory organ (MCO) with two small flaps in the distal portion; hooks with proximal shank dilatation comprising ½ of the shank length. Anacanthorus ataidei sp. n. has an elongated MCO, with ribbon-like ornaments; hooks without proximal shank dilatation. Anacanthorus siphonocommus sp. n. has an MCO with aculeiform ornaments in the distal portion; hooks with proximal dilatation in the shank comprising ½ of the shank length. Anacanthorus maratininguensis sp. n. has an MCO with a small projection in the form of a hook in the distal region; hooks with proximal dilatation comprising ½ of the shank length. Anacanthorus lacinimentulatus sp. n. has an MCO with extrovert flap skirting its distal region; shank of hooks with proximal dilatation comprising ½ of the total shank length. Anacanthorus cururutuiensis sp. n. presents an MCO with flexed lateral flap in the distal region; hooks with proximal dilatation in the shank comprising ¼ of the shank length. Anacanthorus circumspatulatus sp. n. has an MCO with ornaments in the form of pointed and interleaved blades; hooks with proximal shank dilatation comprising approximately ½ of the shank length. Anacanthorus acrophallus sp. n. has MCO with a small pointed sinistral flap; hooks with proximal dilatation in the shank comprising 1/3 of the shank length. The host-parasite diversity scenario and specificity of Anacanthorus species regarding their characiform hosts are also discussed in this study. 

Neotropical Monogenoidea. 60. Two new species of Gyrodactylus (Monogenoidea: Gyrodactylidae) from the armored-catfish, Pareiorhaphis parmula Pereira (Loricariidae) and from the cascarudo, Callichthys callichthys (Linnaeus) (Callichthyidae) from Brazil

Zootaxa ◽  
2019 ◽  
Vol 4551 (1) ◽  
pp. 87 ◽  
Author(s):  
ROGÉRIO T. VIANNA ◽  
WALTER A. BOEGER
Keyword(s):  
New Species ◽  
Body Surface ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
The Body ◽  
Neotropical Species ◽  
Two New Species ◽  
Hard Structures

Two new species of Gyrodactylus are described from the body surface of two catfish species from southern Brazilian rivers. Gyrodactylus anaspidus n. sp. is described from the armored-catfish, Pareiorhaphis parmula (Loricariidae) and Gyrodactylus polyadenus n. sp. is described from the cascarudo, Callichthys callichthys (Callichthyidae). The new species differ from previously described neotropical species of Gyrodactylus by the relative morphology of their haptoral hard structures and male copulatory organ (MCO). Gyrodactylus anaspidus n. sp. has a superficial bar without a shield and an MCO with one row of spinelets (9–11 spinelets). Gyrodactylus polyadenus n. sp. presents a shield associated to a superficial bar, a deep bar with narrow extremities connected to the anchors, a subrectangular hooklet with a short point, and an MCO with one row of six spinelets. We also report that G. anaspidus n. sp. co-occurs with oviparous species of Gyrodactylidae on their respective loricariid hosts. 

First data on the parasites of Hoplias aimara (Characiformes): description of two new species of gill monogeneans (Dactylogyridae)

2015 ◽  
Vol 60 (2) ◽  
Author(s):  
Juliana Moreira ◽  
Tomáš Scholz ◽  
José Luis Luque
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Unique Combination ◽  
Xingu River ◽  
The Family ◽  
Two New Species ◽  
Copulatory Complex

AbstractThe first data on the parasites of the giant trahira, Hoplias aimara (Characiformes: Erythrinidae), a little known, but popular fish for sport angling, are provided. In H. aimara from the Xingu River in Brazil, two new species of gill monogeneans of the family Dactylogyridae were found and their description is provided herein. Urocleidoides aimarai n. sp. differs from all 18 congeners by the presence of a large accessory piece of the male copulatory organ and based by morphology of anchors. Urocleidoides xinguensis n. sp. is distinguished by unique combination of copulatory complex and haptoral structures.

Lamellodiscus crampus sp. nov. (Monogenea, Diplectanidae), a parasite of Dentex maroccanus (Teleostei, Sparidae) from off Tunisia

2008 ◽  
Vol 53 (3) ◽  
Author(s):  
Lassâd Neifar
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Distal Portion ◽  
Sensu Stricto ◽  
Congeneric Species ◽  
Gulf Of Gabes ◽  
Gulf Of Gabès

AbstractLamellodiscus crampus sp. nov. (Monogenea, Diplectanidae) is described from the gills of Dentex maroccanus (Valenciennes) collected from the Gulf of Gabès (Tunisia) in the oriental part of Mediterranean Sea. The new species belongs to the “ignoratus” group (sensu Oliver 1987) characterized by a lamellodisc with complete lamellae and a “lyre” shaped male copulatory organ, and the “ignoratus” sensu stricto subgroup, characterized by a haptor with simple lateral dorsal bars, as proposed by Amine and Euzet (2005). Lamellodiscus crampus can be easily distinguished from all the congeneric species of the subgroup “ignoratus” by the presence, in the “lyre” male copulatory organ, of five spines in the distal portion on the axial side of the paired piece.

Two new species of Annulotrema (Monogenea: Dactylogyridae) from Hydrocynus vittatus (Characiformes: Alestidae) in Lake Kariba, Zimbabwe

2017 ◽  
Vol 92 (4) ◽  
pp. 467-476 ◽  
Author(s):  
M.L. Kičinjaová ◽  
M. Barson ◽  
M. Gelnar ◽  
E. Řehulková
Keyword(s):  
New Species ◽  
Distal Part ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Locality Record ◽  
Copulatory Tube ◽  
Lake Kariba ◽  
Two New Species ◽  
Thin Walled

AbstractTwo new and one known species of Annulotrema Paperna & Thurston, 1969 are reported from the gills of the tigerfish Hydrocynus vittatus Castelnau, 1861, collected in Lake Kariba, Zimbabwe. The new species, Annulotrema pseudonili n. sp. and A. bracteatum n. sp., are described and distinguished mainly on the basis of features of the male copulatory organ (MCO). Annulotrema pseudonili n. sp. most closely resembles A. nili Paperna, 1973, but differs from it by possessing a more delicate MCO with a thin-walled base without a fibrous distal part. Annulotrema bracteatum n. sp. is most similar to Annulotrema ruahae Paperna, 1973, from which it differs by having an MCO composed of a longer copulatory tube and a leaf-shaped accessory piece enveloping the distal part of the tube. The presence of Annulotrema pikoides Guégan, Lambert & Birgi, 1988 on H. vittatus in Zimbabwe represents a new locality record for this parasite.

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