Integrative taxonomy of a new species of Therodamas (Ergasilidae) infecting the Amazonian freshwater fish Leporinus fasciatus (Anostomidae)

Oliveira, Marcos Sidney Brito; Corrêa, Lincoln Lima; Adriano, Edson A.; Tavares‐Dias, Marcos

doi:10.1007/s00436-021-07256-y

Cited by 15 publications

(8 citation statements)

References 29 publications

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“…Overall, the relationships found within this family are consistent with previous phylogenetic analyses (Song et al ., 2008 ; Santacruz et al ., 2020 ; Kvach et al ., 2021 ; Oliveira et al ., 2021 ) and suggest that the genus Ergasilus is not monophyletic. Nevertheless, further morphological studies combined with molecular data are needed to elucidate the evolutionary relationships and origin of this diverse group of parasitic copepods.…”

Section: Discussionmentioning

confidence: 99%

Species of Ergasilus von Nordmann, 1832 (Copepoda: Ergasilidae) from cichlid fishes in Lake Tanganyika

2023

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Section: Discussionmentioning

confidence: 99%

Species of Ergasilus von Nordmann, 1832 (Copepoda: Ergasilidae) from cichlid fishes in Lake Tanganyika

2023

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“…Due to the close relationship of species belonging to Lernaeidae and Ergasilidae (Song et al, 2008; Kvach et al, 2021; Abdel-Radi et al, 2022), three representatives of Lernaeidae were chosen as outgroup. Sequences of three species of Mytilicolidae Bocquet & Stock, 1957 and two species of Myicolidae Yamaguti, 1936 were also added to the alignment because previous studies indicate close ties of these families with Ergasilidae (Khodami et al, 2019; Oliveira et al, 2021). We aligned 18S and 28S rDNA sequences using L-INS-i in MAFFT v.7.409 (Katoh & Standley, 2013) and removed poorly aligned positions and divergent regions using the options for less stringent parameters (options: - b2= < minimum > -b3=10 -b4=5 -b5=h) in Gblocks v.0.91b (Talavera & Castresana, 2007).…”

Section: Methodsmentioning

confidence: 99%

Mitogenomics, phylogenetic position, and updated distribution ofErgasilus kandti, an ergasilid copepod parasitizing African cichlid fishes

Jansen,

Vanhove,

Makasa

et al. 2024

Preprint

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Ergasilidae are a family of globally distributed copepods parasitizing freshwater fish. Despite their widespread occurrence and importance for nutrient cycles, their phylogeographic patterns are poorly understood, specifically in the African Great Lakes. Here, we aim to improve the knowledge about the species diversity of copepods infecting Tylochromis polylepis, an endemic cichlid fish species in Lake Tanganyika, and about the phylogenetic relationship of African ergasilids. We present the first record of Ergasilus kandti parasitizing the gills of T. polylepis in Lake Tanganyika proper identified through light microcopy and, for the first time for any ergasilid, confocal laser scanning microscopy. Morphological analyses showed variations in numbers of spines and setae of the swimming legs. Phylogenetic analyses based on ribosomal DNA fragments suggest two monophyletic groups of African ergasilids. However, the phylogenetic relationships of Ergasilus remain unresolved because of the insufficient resolution of these widely used phylogenetic markers. A comparison of ergasilid mitochondrial genomes highlights gene order stability and interspecific length variation in rrnL. We also provide the first complete ribosomal operon of any African ergasilid and the first whole genome sequencing reads of any ergasilid. This study presents the most extensive morphological and molecular characterization of an ergasilid species to date.

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“…Their habitat is impressively diverse -copepods inhabit almost every aquatic ecosystem, from the depths of the oceans (Brodskaya 1963) to the heights of mountains (Kikuchi 1994), underscoring their integral role in the aquatic invertebrate ecosystem (Easton et al 2014a). It's important to note that while the majority of copepods lead an independent life, some have adapted to a parasitic existence (Oliveira et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Characterization of the complete mitochondrial genome of Ergasilus anchoratus and phylogeny of Copepoda

Hua,

Huang,

et al. 2023

Preprint

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The mitochondrial (mt) genome can provide data for phylogenetic analyses and evolutionary biology. Herein, we sequenced and annotated the complete mt genome of Ergasilus anchoratus. This mt genome was 13852 bp long and comprised 13 protein-coding genes (PCGs), 22 tRNAs and 2 rRNAs. All PCGs used the standard ATN start codons and complete TAA/TAG termination codons. A majority of tRNA genes exhibited standard cloverleaf secondary structures, with the exception of one tRNA that lacked the TψC arm (trnC), and three tRNAs that lacked the DHU arm (trnR, trnS1 and trnS2). Phylogenetic analyses conducted using Bayesian inference (BI) and maximum likelihood (ML) methods both supported Ergasilidae as a monophyletic family forming a sister group to Lernaea cyprinacea and Paracyclopina nana. It also supported the monophyly of orders Calanoida, Cyclopoida, Harpacticoida, and Siphonostomatoida; and the monophyly of families Harpacticidae, Ergasilidae, Diaptomidae, and Calanidae. The gene orders of E. anchoratus and Sinergasilus undulatus were identical, which represents the first instance of two identical gene orders in copepods. More mt genomes are needed to better understand the phylogenetic relationships within Copepada in the future.

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Integrative taxonomy of a new species of Therodamas (Ergasilidae) infecting the Amazonian freshwater fish Leporinus fasciatus (Anostomidae)

Cited by 15 publications

References 29 publications

Species of Ergasilus von Nordmann, 1832 (Copepoda: Ergasilidae) from cichlid fishes in Lake Tanganyika

Species of Ergasilus von Nordmann, 1832 (Copepoda: Ergasilidae) from cichlid fishes in Lake Tanganyika

Mitogenomics, phylogenetic position, and updated distribution ofErgasilus kandti, an ergasilid copepod parasitizing African cichlid fishes

Characterization of the complete mitochondrial genome of Ergasilus anchoratus and phylogeny of Copepoda

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