The role of allopatric speciation and ancient origins of Bathynellidae (Crustacea) in the Pilbara (Western Australia): Two new genera from the De Grey River catchment

Giulia Perina, Ana I. Camacho, Joel Huey, Pierre Horwitz, Annette Koenders

Research output: Contribution to journalArticle

Abstract

The stygofaunal family of Bathynellidae, is an excellent group to study the processes that shape diversity and distribution, since they have unknown surface or marine relatives, high level of endemism, and limited dispersal abilities. Recent research on Bathynellidae in Western Australia (Pilbara) has uncovered new taxa with unexpected distributions and phylogenetic relationships, but the biogeographical processes that drive their diversification on the continent are still unclear. By exploring the diversity, distribution, and divergence time of Bathynellidae in a setting such as the perched and isolated aquifers of the Cleaverville Formation in the north of the De Grey River catchment (Pilbara), we aim to test the hypothesis that vicariance has shaped the distribution of this family, specifically if one or multiple vicariant events were involved. We analysed the specimens collected from perched water in different plateaus of the Cleaverville Formation, combining morphological and molecular data from mitochondrial and nuclear genes. We described two new species and genera (Anguillanella callawaensis gen. et sp. nov. and Muccanella cundalinensis gen. et sp. nov.), and two additional taxa are recognised using morphology and/or Automatic Barcode Gap Discovery and Poisson Tree Processes species delimitation methods. New genera and species result restricted to isolate perched aquifers on single plateaus and their distributions, phylogenetic relationships, and divergence time estimates support multiple vicariant events and ancient allopatric speciation.

Original languageEnglish
Pages (from-to)452-497
Number of pages46
JournalContributions to Zoology
Volume88
Issue number4
DOIs
Publication statusPublished - 1 Jan 2019

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allopatric speciation
Western Australia
new genus
Crustacea
catchment
rivers
new species
river
aquifers
plateaus
divergence
plateau
aquifer
barcoding
phylogeny
phylogenetics
new taxa
vicariance
endemism
new taxon

Cite this

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title = "The role of allopatric speciation and ancient origins of Bathynellidae (Crustacea) in the Pilbara (Western Australia): Two new genera from the De Grey River catchment",
abstract = "The stygofaunal family of Bathynellidae, is an excellent group to study the processes that shape diversity and distribution, since they have unknown surface or marine relatives, high level of endemism, and limited dispersal abilities. Recent research on Bathynellidae in Western Australia (Pilbara) has uncovered new taxa with unexpected distributions and phylogenetic relationships, but the biogeographical processes that drive their diversification on the continent are still unclear. By exploring the diversity, distribution, and divergence time of Bathynellidae in a setting such as the perched and isolated aquifers of the Cleaverville Formation in the north of the De Grey River catchment (Pilbara), we aim to test the hypothesis that vicariance has shaped the distribution of this family, specifically if one or multiple vicariant events were involved. We analysed the specimens collected from perched water in different plateaus of the Cleaverville Formation, combining morphological and molecular data from mitochondrial and nuclear genes. We described two new species and genera (Anguillanella callawaensis gen. et sp. nov. and Muccanella cundalinensis gen. et sp. nov.), and two additional taxa are recognised using morphology and/or Automatic Barcode Gap Discovery and Poisson Tree Processes species delimitation methods. New genera and species result restricted to isolate perched aquifers on single plateaus and their distributions, phylogenetic relationships, and divergence time estimates support multiple vicariant events and ancient allopatric speciation.",
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The role of allopatric speciation and ancient origins of Bathynellidae (Crustacea) in the Pilbara (Western Australia) : Two new genera from the De Grey River catchment. / Perina, Giulia; Camacho, Ana I.; Huey, Joel; Horwitz, Pierre; Koenders, Annette.

In: Contributions to Zoology, Vol. 88, No. 4, 01.01.2019, p. 452-497.

Research output: Contribution to journalArticle

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T1 - The role of allopatric speciation and ancient origins of Bathynellidae (Crustacea) in the Pilbara (Western Australia)

T2 - Two new genera from the De Grey River catchment

AU - Perina, Giulia

AU - Camacho, Ana I.

AU - Huey, Joel

AU - Horwitz, Pierre

AU - Koenders, Annette

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