Proposal of Brotulella n. gen. for Monogeneans from the Gills of the Pacific Bearded Brotula Brotula clarkae Hubbs, 1944 (Ophidiiformes: Ophidiidae) Based on Morphological and Molecular Evidence

Based on morphological and molecular data, Brotulella n. gen. is proposed to accommodate the dactylogyrid monogeneans Brotulella laurafernandae n. sp. (type species) and Brotulella luisahelenae n. sp. on the gill filaments of the Pacific bearded brotula Brotula clarkae Hubbs, 1944 (Ophidiiformes: Op...

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Bibliographic Details
Published in:Fishes 2023-12, Vol.8 (12), p.588
Main Authors: Cruces, Celso Luis, Simões, Raquel, Maldonado Júnior, Arnaldo, Severino, Ruperto, Chero, Jhon Darly, Luque, José Luis
Format: Article
Language:English
Subjects:
Bayesian analysis
Brotula clarkae
Brotulella laurafernandae n. sp
Brotulella luisahelenae n. sp
Brotulella n. gen
cusk-eels
Filaments
Fish
Fishing
gill ectoparasites
Gills
Gonads
Morphology
New genera
New genus
New species
Nucleotide sequence
Ophidiidae
Ophidiiformes
Ovaries
Parasites
Phylogenetics
Phylogeny
Probability theory
Seminal vesicle
taxonomy
Vagina
Vas deferens
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Summary:Based on morphological and molecular data, Brotulella n. gen. is proposed to accommodate the dactylogyrid monogeneans Brotulella laurafernandae n. sp. (type species) and Brotulella luisahelenae n. sp. on the gill filaments of the Pacific bearded brotula Brotula clarkae Hubbs, 1944 (Ophidiiformes: Ophidiidae) from Puerto Pizarro in the Tumbes region (northern Peru). Species of the new genus are distinguished from all other dactylogyrids by the combination of the following features: (1) anchors with a stocking-shaped sheath associated with the distal end of superficial and deep roots, (2) tandem gonads, (3) a vas deferens looping left intestinal caecum, (4) a distally twisted male copulatory organ (MCO) with a delicate membranous accessory piece articulated to the shaft of the MCO, (5) a U-shaped ovary, (6) an almost sigmoid seminal vesicle, and (7) two prostatic reservoirs with thick muscular walls. A 28S ribosomal DNA-based phylogenetic analysis (Maximum likelihood and Bayesian inference) of sequences of two new species of Brotulella n. gen. from the Southeastern Pacific Ocean, along with sequences from closely related genera of the marine Dactylogyridae, supports the establishment of the new genus for the dactylogyrid parasites on the gills of the Pacific bearded brotula.
ISSN:2410-3888
2410-3888
DOI:10.3390/fishes8120588