Waminoa brickneri n. sp. (Acoela: Acoelomorpha) associated with corals in the Red Sea

Zootaxa ◽  
2005 ◽  
Vol 1008 (1) ◽  
pp. 1 ◽  
Author(s):  
MAXINA V. OGUNLANA ◽  
MATTHEW D. HOOGE ◽  
YONAS I. TEKLE ◽  
YEHUDA BENAYAHU ◽  
ORIT BARNEAH ◽  
...  
Keyword(s):  
New Species ◽  
Red Sea ◽  
Posterior Margin ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Reproductive Organs ◽  
Stony Coral ◽  
Poorly Differentiated ◽  
18S Rdna Sequence ◽  
A New Species

While the majority of acoels live in marine sediments, some, usually identified as Waminoa sp., have been found associated with corals, living closely appressed to their external surfaces. We describe a new species collected from the stony coral Plesiastrea laxa in the Red Sea. Waminoa brickneri n. sp. can infest corals in high numbers, often forming clusters in non-overlapping arrays. It is bronze-colored, owing to the presence of two types of dinoflagellate endosymbionts, and speckled white with small scattered pigment spots. Its body is disc-shaped, highly flattened and circular in profile except for a small notch at the posterior margin where the reproductive organs lie. The male copulatory organ is poorly differentiated, but comprises a seminal vesicle weakly walled by concentrically layered muscles, and a small penis papilla with serous glands at its juncture with the male pore. The female system comprises a separate female pore, ciliated vagina, seminal bursa, 4–8 weakly sclerotized nozzles, and paired ovaries. Similarities with Haplodiscus spp. as well as features characteristic of the Convolutidae, including similarity in 18S rDNA sequence, warrant reassigning Waminoa to the Convolutidae.

A new species of Loimopapillosum Hargis, 1955 (Monogenea: Monocotylidae) parasitizing Hypanus dipterurus (Myliobatiformes: Dasyatidae) off the Pacific coast of South America, and its phylogenetic relationships

2021 ◽  
Vol 95 ◽  
Author(s):  
J.D. Chero ◽  
C.L. Cruces ◽  
G. Sáez ◽  
A.G.L. Oliveira ◽  
C.P. Santos ◽  
...  
Keyword(s):  
New Species ◽  
South America ◽  
Pacific Coast ◽  
Male Copulatory Organ ◽  
Phylogenetic Analyses ◽  
Copulatory Organ ◽  
The Pacific ◽  
Northern Peru ◽  
A New Species ◽  
Single Testis

Abstract A new species of Loimopapillosum Hargis, 1955 is described based on specimens collected from the gills of the diamond stingray, Hypanus dipterurus (Jordan & Gilbert, 1880) (Myliobatiformes: Dasyatidae) captured off Puerto Pizarro, Tumbes Region, northern Peru. Loimopapillosum pascuali n. sp. is distinguished mainly from the type and only species, Loimopapillosum dasyatis Hargis, 1955, by its funnel-shaped male copulatory organ, with an asymmetrical base; the superficial root of the anchor with distal knobs; the deep root of the anchor with a constriction at its base; a single testis; and the number of head organs. Available sequences for members of Monocotylidae in the GenBank as well as partial sequences for the gene 28S and 18S ribosomal DNA from L. pascuali n. sp. were included in phylogenetic analyses, suggesting that Loimoinae (represented in this study by L. pascuali n. sp. and Loimosina sp.) is nested within the Monocotylidae Taschenberg, 1879. Therefore, we confirm the rejection of Loimoidae Price, 1936 and its reincorporation as a subfamily of Monocotylidae, as previously suggested. Loimopapillosum pascuali n. sp. represents the first species of this genus in South America.

A new species of Gerstfeldtiancylus Starobogatov, 1989 (Pulmonata:  Basommatophora: Acroloxidae) from Lake Baikal

Zootaxa ◽  
2007 ◽  
Vol 1466 (1) ◽  
pp. 55-67 ◽  
Author(s):  
ALENA SHIROKAYA
Keyword(s):  
New Species ◽  
Salivary Glands ◽  
Lake Baikal ◽  
Littoral Zone ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Type Locality ◽  
A New Species

Gerstfeldtiancylus ushunensis, new species (Pulmonata: Basommatophora: Acroloxidae) is described from material collected in the littoral zone of Lake Baikal. This limpet has been found only at the type locality, Malye Olkhonskie Vorota, Ushun Bay. It is distinguished from all known Baikal acroloxids by the presence of scales on the dorsal jaw part and from other representatives of Gerstfeldtiancylus by the presence of a velum in the male copulatory organ, short salivary glands and the location of the posterior shell adductor. This new species is most similar to G. roepstorfi Shirokaya et al., 2003 based on the shape of teleoconch, and most closely resembles G. renardii (Dybowski, 1884) in terms of radular morphology. Species that are morphologically identical with G. ushunensis never accompany it. G. ushunensis coexists with G. benedictiae and G. kotyensis, which are easily distinguishable from the latter.

A new species of Sciadicleithrum (Monogenea: Ancyrocephalinae), gill parasite of Geophagus brasiliensis (Quoy & Gaimard) (Teleostei: Cichlidae) from reservoirs in the State of Parana Brazil

Zootaxa ◽  
2008 ◽  
Vol 1700 (1) ◽  
pp. 63 ◽  
Author(s):  
SYBELLE BELLAY ◽  
RICARDO MASSATO TAKEMOTO ◽  
FABIO HIDEKI YAMADA ◽  
GILBERTO CEZAR PAVANELLI
Keyword(s):  
New Species ◽  
South America ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
The State ◽  
Southern Brazil ◽  
Gill Parasite ◽  
Geophagus Brasiliensis ◽  
A New Species ◽  
Southeast Mexico

Sciadicleithrum frequens n. sp. is described from the gills of the acará, Geophagus brasiliensis (Cichlidae), from nine reservoirs in the State of Paraná, Brazil. The new species differs from the others members of Sciadicleithrum in the following features: dorsal anchors more than twice as long as the ventral anchors and hook pair 5 reduced in size. Sciadicleithrum frequens n. sp. is similar to species of this parasite genus from South America by having the male copulatory organ comprising less than 2 rings, and to species of Sciadicleithrum from Central America and southeast Mexico by the presence of longitudinal lateral grooves on the shafts and points of the ventral and dorsal anchors. This new species is the first species of Sciadicleithrum in South America with longitudinal lateral grooves on shafts and point of the ventral and dorsal anchors. It is the first dactylogyrid described from G. brasiliensis, and it is the first species of Sciadicleithrum described from Southern Brazil.

scholarly journals A new species of Tereancistrum (Monogenea: Dactylogyridae), parasite of Prochilodus lineatus (Characiformes: Prochilodontidae) from southeast Brazil

2020 ◽  
Vol 29 (2) ◽  
Author(s):  
Lucas Aparecido Rosa Leite ◽  
Larissa Sbeghen Pelegrini ◽  
Rodney Kozlowiski de Azevedo ◽  
Vanessa Doro Abdallah
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Sao Paulo ◽  
Prochilodus Lineatus ◽  
Paulo State ◽  
Deep Root ◽  
Southeast Brazil ◽  
A New Species

Abstract A new species of Tereancistrum Kritsky, Thatcher & Kayton, 1980 collected of Prochilodus lineatus gills from the Batalha River, Tietê-Batalha basin, São Paulo State, Brazil is described. The new species can be distinguished from its congeners mainly by the configuration of the ventral bar, which has an anvil-shaped characteristic with corrugated anterior projection. Tereancistrum takemotoi n. sp. is morphologically similar to T. toksonum Lizama, Takemoto & Pavanelli, 2004 in terms of their dorsal bars (Y-shaped), their dorsal anchors with divergent roots (superficial and deep) wherein their deep root rather elongated, and by the fact that they both have the male copulatory organ counterclockwise. However, only T. takemotoi n. sp. presents the male copulatory organ with 2¼ rings and shows undulations in the anterior margin of the dorsal bar. These undulations are absent in T. toksonum (which only has 1¼ rings). This is the fourth Tereancistrum species described for P. lineatus and the first described for the region from the Tietê-Batalha basin.

A new marine flatworm (Plathelminthes: Rhabditophora: Otoplanidae) from the Ligurian coast

2009 ◽  
Vol 90 (2) ◽  
pp. 423-427 ◽  
Author(s):  
A. Lanfranchi ◽  
M. Melai
Keyword(s):  
New Species ◽  
Body Length ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Ligurian Coast ◽  
A New Species

The morphology and taxonomy of a new species of otoplanid (Plathelminthes: Rhabditophora: Proseriata) is discussed. Otoplana proxima sp. nov., collected at Marina di Bibbona (Livorno), presents the typical morphological peculiarities of the subfamily Otoplaninae, but clearly differs from the previously described species with regard to the organization of the genital organs. The new flatworm appears more similar to Otoplana intermedia, but differs sharply in its body length and male copulatory organ made up of 23–24 pliable spines (42–70 μm long) characterized by a forked tip and a canaliculated proximal end.

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 Rhinonastes (Monogenoidea, Dactylogyridae), nasal parasite of Prochilodus argenteus (Actinopterygii, Characiformes) from Brazil

2014 ◽  
Vol 59 (3) ◽  
Author(s):  
Cassandra Monteiro ◽  
Marilia Brasil-Sato
Keyword(s):  
New Species ◽  
Nasal Cavity ◽  
Type Species ◽  
Male Copulatory Organ ◽  
First Record ◽  
Copulatory Organ ◽  
Sao Francisco River ◽  
São Francisco River ◽  
A New Species

AbstractA new species of Rhinonastes, hitherto monotypic, is described and illustrated from the nasal cavity of ‘curimat’, Prochilodus argenteus from São Francisco River, Brazil. Rhinonastes curimatae n. sp. presents a male copulatory organ with more than five rings while the type species of the genus is characterized by male copulatory organ with less than two rings. This is the first record of a nasal parasite in P. argenteus.

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.

A new species of Gieysztoria (Platyhelminthes; Rhabdocoela; Dalyelliidae) from a freshwater lake in Queensland, Australia

Zootaxa ◽  
2001 ◽  
Vol 11 (1) ◽  
pp. 1 ◽  
Author(s):  
RICK HOCHBERG ◽  
LESTER R.G. CANNON
Keyword(s):  
New Species ◽  
Male Copulatory Organ ◽  
Copulatory Organ ◽  
Freshwater Lake ◽  
Artificial Lake ◽  
Receptaculum Seminis ◽  
Male Organ ◽  
The University ◽  
A New Species ◽  
Shape And Size

A new species of Dalyelliidae, Gieysztoria queenslandica, is described from a freshwater lake in Brisbane, Queensland, Australia. Gieysztoria queenslandica n. sp. is a member of the Aequales group of Gieysztoria and differs from its congeners by possession of an S-shaped ovary, a Y-shaped oviduct leading to a separate receptaculum seminis, and the shape and size of the male copulatory organ. The sclerotic male organ of G. queenslandica is characterized by 27-32 broad, dagger-like spines arising from a hollow crescent-shaped girdle. The new species is seasonally abundant (AprilJuly) in an artificial lake present on the St. Lucia campus of the University of Queensland in Brisbane, Australia.

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