An integrated approach to explore the monophyletic status of the cosmopolitan genus
            <i>Hexabathynella</i>
            (Crustacea, Bathynellacea, Parabathynellidae): two new species from Rottnest Island (Wadjemup), Western Australia

Perina, Giulia; Camacho, A. I.; Cooper, Steven J.; Floeckner, Stephanie; Blyth, Alison J.; Saccò, Mattia

doi:10.1080/14772000.2022.2151662

Cited by 9 publications

(6 citation statements)

References 68 publications

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“…'sp. Biologic-pbat023' represented by a juvenile with only four pairs of thoracopods and The coi and 12S uncorrected P-distance amongst the lineages in the area (tables 4 and 5) is within the molecular distances previously found in Parabathynellidae (Abrams et al, 2013;Camacho et al, 2018;Camacho et al, 2022;Matthews et al, 2020;Perina et al, 2023a, b). The molecular interspecific variation was high in both 12S (23.3-34.6%) and coi (14.5-20%) genes, and low at the intraspecific level (e.g., 12S gene ~ 4.3% and coi ~ 4.8%), as previously found in Atopobathynella species (Perina et al, 2023b).…”

Section: Discussionsupporting

confidence: 64%

An integrated study of Atopobathynella (Parabathynellidae, Bathynellacea) species reveals restricted distributions in a complex hydrogeological setting: two new species from the Pilbara (Australia)

Perina,

Camacho,

White

et al. 2024

Contrib. Zool.

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The Pilbara bioregion (Western Australia) has become a hotspot for subterranean fauna as a consequence of many surveys conducted to comply with Western Australian environmental regulation requirements. In this bioregion, mining developments can have major implications for subterranean fauna and their conservation. However the diversity and species distributions of most taxa are still poorly known, including the crustacean family Parabathynellidae. Recent studies on a widespread genus of this family (Atopobathynella) from the Pilbara highlighted several undescribed taxa with interesting patterns of distribution. In the Gudai Darri locality, the northern flank of the Hamersley Range occurs as a stepped escarpment intersected by dykes and gullies, with groundwater occurring within fractured rocks abutting the Fortescue River valley, where a separate regional aquifer occurs. This investigation aimed to observe whether stygofauna species distributions (1) reflected the separation between the two major aquifers within the Hamersley Range and the Fortescue Valley; and (2) were influenced by the presence of dykes. We examined the Atopobathynella species occurring in the study area using morphological and molecular data. The results reflected the hydrogeological complexity of the study area with six new lineages of Atopobathynella, recorded mainly in different gullies, that do not share a most recent common ancestor. Two species are described here A. pagetae sp. nov. and A. lythei sp. nov., and four additional species are delineated through preliminary morphological analyses and molecular data. This study will improve future environmental impact assessments and the understanding of Parabathynellidae taxa distribution in hydrogeological complex areas.

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Section: Discussionsupporting

confidence: 64%

An integrated study of Atopobathynella (Parabathynellidae, Bathynellacea) species reveals restricted distributions in a complex hydrogeological setting: two new species from the Pilbara (Australia)

Perina,

Camacho,

White

et al. 2024

Contrib. Zool.

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“…Researchers are identifying new morphological characters to further describe the male ThVIII, finding differences that morphologically justify the creation of new genera (e.g. Future studies of species within the family should incorporate DNA sequences, because as we are seeing with the most recent papers (Camacho et al 2018a(Camacho et al , 2018b(Camacho et al , 2020(Camacho et al , 2021(Camacho et al , 2022Perina et al 2018Perina et al , 2019aPerina et al , 2019bPerina et al , 2022, molecular information can help to resolve phylogeny and relationships amongst species and genera. Diversification within the family appears to be greater than previously thought.…”

Section: Discussionmentioning

confidence: 99%

Description of a new species of Hobbsinella (Crustacea, Bathynellacea, Bathynellidae) from Colorado (USA) based on morphological and molecular characters

Camacho,

Mas-Peinado,

Bonwell

et al. 2023

EJT

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A new species of Bathynellidae is described from Colorado (USA). Hobbsinella gunnisonensis Camacho & Taylor sp. nov. displays a unique combination of morphological characters including seven-segmented antenna lacking medial seta on exopod, antennule slightly longer than antenna, three-segmented mandibular palp, four articles on endopod of thoracopods I to VII and five spines on sympod and three spines on endopod of the uropods. Partial sequences of cytochrome oxidase I (COI) and 18S have been obtained from several specimens of the new species. The mitocondrial and nuclear DNA data complement the traditional morphological taxonomic description support the validity of the new species. Molecular data for the Bathynellidae demonstrate the presence of two highly divergent genetic units, with the new species placed in the genus Hobbsinella. With the description of Hobbsinella gunnisonensis Camacho & Taylor sp. nov. and its molecular characterization, we discovered an interesting distribution of the genus, which occurs in both sides of the Continental Divide (Texas and Colorado) and different habitats.

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“…Unfortunately, despite multiple DNA extraction attempts on five specimens, we were unable to obtain sequences for this new genus, therefore, we were not able to place them in current global parabathynellid molecular phylogenetic frameworks (Little et al 2016;Matthews et al 2020;Camacho et al 2021;Perina et al 2023aPerina et al , 2023b.…”

Section: Introductionmentioning

confidence: 97%

“…According to Abrams et al (2013), 47 species were known from Australia (including two in Tasmania), distributed in 10 genera across mainland Australia. Since then, one more genus and species have been described, Lockyerenella danschmidti Camacho & Little, 2017 from Queensland, two new species of Hexabathynella Schminke, 1972 from Rottnest Island (Western Australia) (Perina et al 2023a) and two new species of Atopobathynella Schminke, 1973 from the Pilbara region (Perina et al 2023b). In addition, a recent paper by Matthews et al (2020), using a combined approach of molecular species delimitation methods, identified between eight to 24 putative new species from remote subterranean habitats in the Pilbara region of Western Australia (WA).…”

Section: Introductionmentioning

confidence: 99%

New giant genus of Parabathynellidae (Crustacea: Bathynellacea): first record of Bathynellacea in an Australian cave

Camacho,

Abrams,

Moulds

2024

EJT

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A new genus and species of Parabathynellidae (Crustacea: Bathynellacea), Megabathynella totemensis Camacho & Abrams gen. et sp. nov., is described from the Northern Territory, Australia. This species is the first to be described from an Australian cave. It is a new giant species (4 to 6 mm). The new species displays several unique morphological character states within Parabathynellidae and is the only known species with: more than 12 articles on antennules, with a short, curved barbed seta on each article from the fifth; eight setae on the last article of antennae; more than three setae on the mandibular palp; up to 17 articles on the exopod of the thoracopods, without ctenidia but with a strong spine on each article at the base of the external seta; strong row of pair of spines on latero-external side of second article of endopod in all thoracopods; the male thoracopod VIII is different from all those known; more than 50 spines on the sympod of the uropod and more than 35 spines on the furcal rami. Specimens of the new species are morphologically different from all known species, but more closely resemble some giant species of the genera Kampucheabathynella (Asia), and Billibathynella and Brevisomabathynella (Australia).

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An integrated approach to explore the monophyletic status of the cosmopolitan genus Hexabathynella (Crustacea, Bathynellacea, Parabathynellidae): two new species from Rottnest Island (Wadjemup), Western Australia

Cited by 9 publications

References 68 publications

An integrated study of Atopobathynella (Parabathynellidae, Bathynellacea) species reveals restricted distributions in a complex hydrogeological setting: two new species from the Pilbara (Australia)

An integrated study of Atopobathynella (Parabathynellidae, Bathynellacea) species reveals restricted distributions in a complex hydrogeological setting: two new species from the Pilbara (Australia)

Description of a new species of Hobbsinella (Crustacea, Bathynellacea, Bathynellidae) from Colorado (USA) based on morphological and molecular characters

New giant genus of Parabathynellidae (Crustacea: Bathynellacea): first record of Bathynellacea in an Australian cave

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