Monogenea from freshwater fishes

Gussev, A. V.; Fernando, C. H.

doi:10.1007/978-94-009-6545-4_7

Cited by 5 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The distended seminal vesicles found in Bychowskyella are similar to those in the ancyrocephalines and dactylogyrids. However, in Bychowskyella species the ductus ejaculatorius is also distended prior to entering the initial part of the copulatory tube (see Gussev, 1985; present data) this feature has not been observed in the ancyrocephalines nor in the dactylogyrids. Until a complete study of the development of the Bychowskyella species can be made to elucidate the taxonomic status of Bychowskyella, it should be retained in the Ancylodiscoidinae.…”

Section: Discussionmentioning

confidence: 64%

“…The majority of the genera of the Ancylodiscoidinae possess a seminal vesicle in the form of a blind sac, except for Bychowskyella and Quadriacanthus Paperna, 1961 where the seminal vesicles are distended parts of the vas deferens (see Gussev, 1985 and the present study). The distended seminal vesicles found in Bychowskyella are similar to those in the ancyrocephalines and dactylogyrids.…”

Section: Discussionmentioning

confidence: 88%

See 1 more Smart Citation

Three new species of Bychowskyella Achmerow, 1952 (Monogenea) from Peninsular Malaysia

Lim

1991

Syst Parasitol

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 88%

Three new species of Bychowskyella Achmerow, 1952 (Monogenea) from Peninsular Malaysia

Lim

1991

Syst Parasitol

View full text Add to dashboard Cite

show abstract

“…The presence of a second seminal vesicle has also been reported in Ancyrocephalus bassensis Hughes 1928by Murray (1931, in Bychowskyella species by Gussev (1985) and Lim (1991), in Hal# otrema species by Yamaguti (1963) and in Quadriacanthus species (personal observation). However the second vesicle in the aforementioned genera is different in structure from the blind second vesicle of the present two species.…”

Section: Discussionmentioning

confidence: 90%

Two new species of Anchylodiscus Johnston & Tiegs, 1922 (Monogenea) from Plotosus canius (Plotosidae)

Lim

1992

Syst Parasitol

View full text Add to dashboard Cite

Two new species of Anchylodiscus Johnston & Tiegs, 1922, A. malayensis n. sp. and A. liewi n. sp., were obtained from the gills and the dendritic (or arborescent) organ of Plotosus canius, respectively. The two new species have two seminal vesicles; the seminal vesicle nearer the testis is a distension of the vas deferens, while the distal one is similar to the blind seminal vesicle of the majority of freshwater ancylodiscoidines. The blind seminal vesicle suggests that Anchylodiscus should be placed in the subfamily Ancylodiscoidinae.

show abstract

“…To generate data needed to assess the relationship between Ancyrocephalidae and Dactylogyridae, as well as the relationships of Dactylogyridea and Monogenea, herein we sequenced two poorly studied Dactylogyrus species. Dactylogyrus simplex Bychowsky, 1936, is a small parasite that attaches itself to the gill lamellae of a broad range of fish hosts [ 27 , 28 ]. Despite the almost global distribution (reported from Eurasia, North America and Africa), there are very few mentions of this species in scientific literature, and there are even fewer molecular data available: only two ITS1 (internal transcribed spacer 1) sequences in the GenBank.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the almost global distribution (reported from Eurasia, North America and Africa), there are very few mentions of this species in scientific literature, and there are even fewer molecular data available: only two ITS1 (internal transcribed spacer 1) sequences in the GenBank. Dactylogyrus tuba Linstow, 1878, also attaches itself to the gills or nasal cavity of a wide range of Cyprinidae hosts, but predominantly from the Leuciscinae subfamily, and their distribution appears to be limited to Eurasia [ 26 , 28 – 30 ]. This species is also rarely mentioned in the scientific literature, and in terms of available molecular data, there are only three ITS1 sequences in the GenBank.…”

Section: Introductionmentioning

confidence: 99%

Mitochondrial phylogenomics provides conclusive evidence that the family Ancyrocephalidae is deeply paraphyletic

et al. 2023

View full text Add to dashboard Cite

Background Unresolved taxonomic classification and paraphyly pervade the flatworm class Monogenea: the class itself may be paraphyletic and split into Polyopisthocotylea and Monopisthocotylea; there are some indications that the monopisthocotylean order Dactylogyridea may also be paraphyletic; single-gene markers and some morphological traits indicate that the family Ancyrocephalidae is paraphyletic and intertwined with the family Dactylogyridae. Methods To attempt to study the relationships of Ancyrocephalidae and Monopisthocotylea using a phylogenetic marker with high resolution, we sequenced mitochondrial genomes of two fish ectoparasites from the family Dactylogyridae: Dactylogyrus simplex and Dactylogyrus tuba. We conducted phylogenetic analyses using three datasets and three methods. Datasets were ITS1 (nuclear) and nucleotide and amino acid sequences of almost complete mitogenomes of almost all available Monopisthocotylea mitogenomes. Methods were maximum likelihood (IQ-TREE), Bayesian inference (MrBayes) and CAT-GTR (PhyloBayes). Results Both mitogenomes exhibited the ancestral gene order for Neodermata, and both were compact, with few and small intergenic regions and many and large overlaps. Gene sequences were remarkably divergent for nominally congeneric species, with only trnI exhibiting an identity value > 80%. Both mitogenomes had exceptionally low A + T base content and AT skews. We found evidence of pervasive compositional heterogeneity in the dataset and indications that base composition biases cause phylogenetic artefacts. All six mitogenomic analyses produced unique topologies, but all nine analyses produced topologies that rendered Ancyrocephalidae deeply paraphyletic. Mitogenomic data consistently resolved the order Capsalidea as nested within the Dactylogyridea. Conclusions The analyses indicate that taxonomic revisions are needed for multiple Polyopisthocotylea lineages, from genera to orders. In combination with previous findings, these results offer conclusive evidence that Ancyrocephalidae is a paraphyletic taxon. The most parsimonious solution to resolve this is to create a catch-all Dactylogyridae sensu lato clade comprising the current Ancyrocephalidae, Ancylodiscoididae, Pseudodactylogyridae and Dactylogyridae families, but the revision needs to be confirmed by another marker with a sufficient resolution. Graphical Abstract

show abstract

Monogenea from freshwater fishes

Cited by 5 publications

References 0 publications

Three new species of Bychowskyella Achmerow, 1952 (Monogenea) from Peninsular Malaysia

Three new species of Bychowskyella Achmerow, 1952 (Monogenea) from Peninsular Malaysia

Two new species of Anchylodiscus Johnston & Tiegs, 1922 (Monogenea) from Plotosus canius (Plotosidae)

Mitochondrial phylogenomics provides conclusive evidence that the family Ancyrocephalidae is deeply paraphyletic

Contact Info

Product

Resources

About