Morphological and molecular evidence for a new rhabdochonid species, Rhabdochona (Nematoda: Rhabdochonidae), parasitizing Eugerres mexicanus (Perciformes: Gerreidae), from the Lacantún River in the Biosphere Reserve of Montes Azules, Chiapas, Mexico

Caspeta‐Mandujano, Juan Manuel; Salinas-Ocampo, Julio Cesar; Suárez-Rodríguez, Ramón; Martínez-Ramírez, Carlos; Matamoros, Wilfredo A.

doi:10.22201/ib.20078706e.2021.92.3266

Cited by 2 publications

(3 citation statements)

References 18 publications

(24 reference statements)

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“…6 ). Rhabdochona juliacarabiasae was recovered as basal to all ingroup taxa, which is contrasting to Lagunas-Calvo et al (2019) , Santacruz et al (2020) and Caspeta-Mandujano et al (2021) who recovered R. xiphophori , R . salgadoi and R. mexicana as the basal taxon to all the ingroup taxa, in their respective analyses.…”

Section: Discussioncontrasting

confidence: 57%

“…Apart from Caspeta-Mandujano et al (2021) that included all species with cox 1 sequence data and recovered a different tree topology than in the present study, it is clear that the phylogenetic relationship between species of Rhabdochona is still unresolved. No apparent grouping according to endemicity, host preference or zoogeographic region was observed.…”

Section: Discussionmentioning

confidence: 65%

“… Species Host Locality 28S cox Reference Rhabdochona acuminata Brycon guatemalensis (Characiformes: Bryconidae) Mexico MK341679 MK341634 Santacruz et al (2020) Mexico MK341680 MK341635 Mexico MK341681 MK341636 Rhabdochona adentata Profundulus oaxacae (Cyprinodontiformes: Profundulidae) Mexico – MN927201 Caspeta-Mandujano et al (2021) Mexico – MN927199 Rhabdochona ahuelhuellensis Ilyodon whitei (Cyprinodontiformes: Goodeidae) Mexico – MK353475 Lagunas-Calvo et al (2019) Mexico – MK353476 Mexico – MK353477 Rhabdochona canadensis Gila conspersa ...…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Integrated morphological and molecular characterization of the fish parasitic nematode Rhabdochona (Rhabdochona) gendrei Campana-Rouget, 1961 infecting Labeobarbus altianalis (Boulenger, 1900) in Kenya

Rindoria¹,

Morara²,

Smit³

et al. 2023

International Journal for Parasitology: Parasites and Wildlife

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Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 65%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Integrated morphological and molecular characterization of the fish parasitic nematode Rhabdochona (Rhabdochona) gendrei Campana-Rouget, 1961 infecting Labeobarbus altianalis (Boulenger, 1900) in Kenya

Rindoria¹,

Morara²,

Smit³

et al. 2023

International Journal for Parasitology: Parasites and Wildlife

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Additional data on Spinitectus petterae (Nematoda: Rhabditida) from Clarias gariepinus (Siluriformes: Clariidae) in the Vaal River system: conserved morphology or high intraspecific genetic variability?

2023

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Two species of Spinitectus Fourment, 1884 have been recorded from southern Africa, namely Spinitectus polli Campana-Rouget, 1961 and Spinitectus petterae Boomker, 1993, both from the Limpopo River system. Spinitectus petterae was described from North African catfish, Clarias gariepinus (Burchell), whereas S. polli infects squeakers, Synodontis spp. During parasitological surveys in the Vaal River system (Orange River catchment), Spinitectus specimens were collected from C. gariepinus. These systems are adjacent but not connected. Therefore, this study aimed to identify the specimens collected using morphological and molecular techniques. The morphological study included light and scanning electron microscopy of whole specimens and excised spicules. Specimens were genetically characterised using 18S rDNA, 28S rDNA and cox1 mtDNA. Additionally, immature specimens of S. petterae were collected near the type locality. Morphological characteristics were most similar to S. petterae from C. gariepinus, whereas genetic data were dissimilar to all available data for the genus. Additional morphological characteristics noted for S. petterae in the present study were the details of the left and right spicule structure and the porous structures on the pseudolabia. Specimens from the Vaal River system differed from those originally described as S. petterae by additional spines posterior to the third ring, lacking caudal alae and variable total body and male oesophagus length. Based on 18S rDNA, haplotypes from the type locality varied only slightly from the study material, supporting the morphological identification. However, 28S rDNA and, more conspicuously, cox1 mtDNA displayed substantial variation between specimens from these localities, which needs further investigation. Haplotypes generated in the present study were highly dissimilar to those characterised for S. petterae from Tanzania and Egypt. Nevertheless, the nematodes collected from C. gariepinus in the Vaal River system are considered S. petterae. This study expands the geographical distribution and adds additional morphological and genetic information for S. petterae, contributing to the limited knowledge of African species of Spinitectus.

show abstract

Morphological and molecular evidence for a new rhabdochonid species, Rhabdochona (Nematoda: Rhabdochonidae), parasitizing Eugerres mexicanus (Perciformes: Gerreidae), from the Lacantún River in the Biosphere Reserve of Montes Azules, Chiapas, Mexico

Cited by 2 publications

References 18 publications

Integrated morphological and molecular characterization of the fish parasitic nematode Rhabdochona (Rhabdochona) gendrei Campana-Rouget, 1961 infecting Labeobarbus altianalis (Boulenger, 1900) in Kenya

Integrated morphological and molecular characterization of the fish parasitic nematode Rhabdochona (Rhabdochona) gendrei Campana-Rouget, 1961 infecting Labeobarbus altianalis (Boulenger, 1900) in Kenya

Additional data on Spinitectus petterae (Nematoda: Rhabditida) from Clarias gariepinus (Siluriformes: Clariidae) in the Vaal River system: conserved morphology or high intraspecific genetic variability?

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