Contribuição para o conhecimento dos parasitos de peixes do litoral do Estado da Guanabara - parte II

Integration of morphological and molecular approaches to species delineation has become an essential part of digenean trematode taxonomy, particularly when delimiting cryptic species. Here, we use an integrated approach to distinguish and describe two morphologically cryptic species of Hysterolecitha Linton, 1910 (Trematoda: Lecithasteridae) from fishes of Moreton Bay, Queensland, Australia. Morphological analyses of Hysterolecitha specimens from six fish species demonstrated a complete overlap in morphometric data with no reliable differences in their gross morphological characters that suggested the presence of more than one species. Distinctions in ITS2 rDNA and cox1 mtDNA sequence data for corresponding specimens suggested the presence of two forms. A principal component analysis on an imputed dataset showed clear separation between the two forms. These two forms are partially separated on the basis of their host’s identity. Therefore, we describe two morphologically cryptic species: Hysterolecitha melaen. sp. from three species of Abudefduf Forsskål and one species of Parma Günther (Pomacentridae), with the Bengal sergeant, Abudefduf bengalensis (Bloch), as the type-host; and Hysterolecitha phisonin. sp. from species of Pomacentridae (including A. bengalensis), Pomatomidae and Siganidae, with the black rabbitfish, Siganus fuscescens (Houttuyn), as the type-host.

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Evidence for two morphologically cryptic species of Hysterolecitha Linton, 1910 (Trematoda: Lecithasteridae) infecting overlapping host ranges in Moreton Bay, Australia

Duong

Cribb

Cutmore

2023

Syst Parasitol

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Two new species of Enenterum Linton, 1910 (Digenea) in the marine fish Neoscorpis lithophilus (Kyphosidae) from the south-western Indian Ocean

Bray

1978

J. Helminthol.

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Enenterum elsti sp. nov. and E. prudhoei sp. nov. are described from the intestine of Neoscorpis lithophilus off Mapelane, Natal, South Africa. These species differ from others of the genus Enenterum in the ratio of the oral sucker to body-length and in the length of the prepharynx. E. elsti differs from. E. prudhoei in size, in sucker-ratio and in the number and configuration of the oral lobes. A key to the species of Enenterum is presented and the status of the genus briefly discussed.

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A review of the family Enenteridae Yamaguti, 1958 (Digenea), with descriptions of species from Australian waters, including Koseiria huxleyi n. sp.

Bray

Cribb

2001

Syst Parasitol

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The family Enenteridae is reviewed, with keys to the genera and species and diagnoses of the family and genera, based on a cladistic analysis utilising 44 characters. Subfamilies are not recognised. Descriptions of the following taxa from Australian marine teleosts are given: Enenterum mannarense from Kyphosus sydneyanus, SW Australia, E. elongatum from Kyphosus sydneyanus, SW Australia (these two species are distinguished by the number of oral lobes and the ovary to anterior testis distance), Koseiria huxleyi n. sp. from Chaetodontoplus meredithi, Great Barrier Reef (this new species is distinguished by the vitellarium reaching into the forebody, the infundibuliform terminal oral sucker, the unlobed ovary and the distinct post-oral ring), Koseiria xishaense from Kyphosus cinerascens and K. vaigiensis, Great Barrier Reef, Cadenatella isuzumi from Kyphosus cinerascens and K. vaigiensis, Great Barrier Reef, and C. pacifica (Yamaguti, 1970) n. comb. [was Jeancadenatia] from Kyphosus cinerascens and K. vaigiensis, Great Barrier Reef. The genus Jeancadenatia is considered a synonym of Cadenatella, and the new combination C. dollfusi (Hafeezullah, 1980) is formed. Members of the family are parasitic mainly in herbivorous fishes with a few genera and species from non-herbivorous fishes.

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Contribuição para o conhecimento dos parasitos de peixes do litoral do Estado da Guanabara - parte II

Cited by 5 publications

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Evidence for two morphologically cryptic species of Hysterolecitha Linton, 1910 (Trematoda: Lecithasteridae) infecting overlapping host ranges in Moreton Bay, Australia

Evidence for two morphologically cryptic species of Hysterolecitha Linton, 1910 (Trematoda: Lecithasteridae) infecting overlapping host ranges in Moreton Bay, Australia

Two new species of Enenterum Linton, 1910 (Digenea) in the marine fish Neoscorpis lithophilus (Kyphosidae) from the south-western Indian Ocean

A review of the family Enenteridae Yamaguti, 1958 (Digenea), with descriptions of species from Australian waters, including Koseiria huxleyi n. sp.

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