A New Genus and Species of Ridgewayiidae (Copepoda: Calanoida) from Subterranean Waters of Northwestern Australia

Tang, Danny; Barron, Harley J.; Goater, S.

doi:10.1651/07-2869r.1

Cited by 11 publications

(10 citation statements)

References 21 publications

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“…2006;Tang et al 2008), ostracods (Karanovic, I. 2007) and isopods (Keable and Wilson 2006;Bruce 2008) and water mites (M.S.…”

Section: Stygofauna Sample Processing and Identifi Cationmentioning

confidence: 99%

“…Of the 290 species for which range at the regional level could be determined, 98% of the stygobites and 83% of the other groundwater species (stygophiles and perhaps a few stygoxenes) are known only from the Pilbara, with no more than three stygobitic species having ranges extending outside the Pilbara. The calanoid copepod Stygoridgewayia trispinosa occurs on the Cape Range peninsula (Tang et al 2008), the cyclopoid copepod Diacyclops humphreysi humphreysi occurs on Barrow Island and in south-western Australia (Karanovic, T. 2006) and the species of Stygiocaris on the Pilbara coast may be S. lancifera, which occurs on the Cape Range peninsula (a related species, S. stylifera, also occurs at Exmouth as well as on Barrow Island; Page et al 2008). In addition to the high level of endemism, the taxonomic composition of stygofauna in the Pilbara differs from most regions of the world because of the dominance of ostracods, which represent 41% of species in the Pilbara compared with an average 3% in the rest of the world (Figure 7; Eberhard et al 2005a).…”

Section: Uniqueness Of Pilbara Faunamentioning

confidence: 99%

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Pilbara stygofauna: deep groundwater of an arid landscape contains globally significant radiation of biodiversity

Halse¹,

Scanlon²,

Cocking³

et al. 2014

Rec West Aust Mus Sup

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-The Pilbara region was surveyed for stygofauna between 2002 and 2005 with the aims of setting nature conservation priorities in relation to stygofauna, improving the understanding of factors affecting invertebrate stygofauna distribution and sampling yields, and providing a framework for assessing stygofauna species and community signifi cance in the environmental impact assessment process.Approximately 350 species of stygofauna were collected during the survey and extrapolation suggests that 500-550 actually occur in the Pilbara, although taxonomic resolution among some groups of stygofauna is poor and species richness is likely to have been substantially underestimated. More than 50 species were found in a single bore. Even though species richness was underestimated, it is clear that the Pilbara is a globally important region for stygofauna, supporting species densities greater than anywhere other than the Dinaric karst of Europe. This is in part because of a remarkable radiation of candonid ostracods in the Pilbara. Ostracods are the dominant stygofaunal group in terms of both species richness and animal abundance. Together, ostracods, copepods, amphipods and oligochates comprised 77% of species and 96% of animals collected.Stygofauna were found in 72% of samples collected and 81% of wells sampled. The average sample (including those without stygofauna) contained 3.2 ± 0.1 species. A feature of the Pilbara is that stygofauna occur across most of the landscape, often where the depth to groundwater is considerable, although yields were low where depth to groundwater was >30 m. Another feature is high endemicity: on the basis of current taxonomy 98% of the stygobites and 83% of the other groundwater species occur only within the region. Few factors affecting stygofauna occurrence could be identifi ed, however. Numbers of specimens and species collected were positively related to well diameter and negatively related to depth to groundwater. Numbers of species declined in inland sub-regions, although variability within sub-regions was high.While a range of freshwater chemistries occurred, 79% of water samples were weakly saline and NaCl dominated. Profi ling and purging of wells suggested that water quality measurements refl ected aquifer conditions in most situations. Water chemistry appeared to have limited infl uence on stygofauna occurrence in the Pilbara. Geology also appeared to have little effect on stygofauna occurrence but this may have been the result of non-random siting of wells; there was a bias towards wells being in transmissive locations that were not necessarily typical of the geology in which each well occurred.No potential reserves for stygofauna are recommended in this paper but nine areas of high stygofauna richness were identifi ed, including the listed Ethel Gorge stygofauna community. Theoretical analysis of species ranges suggested that half of the species found only in the vicinity of development projects will have ranges less than 680 km 2 . Consequently, projects involving ext...

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“…2006;Tang et al 2008), ostracods (Karanovic, I. 2007) and isopods (Keable and Wilson 2006;Bruce 2008) and water mites (M.S.…”

Section: Stygofauna Sample Processing and Identifi Cationmentioning

confidence: 99%

Section: Uniqueness Of Pilbara Faunamentioning

confidence: 99%

Pilbara stygofauna: deep groundwater of an arid landscape contains globally significant radiation of biodiversity

Halse¹,

Scanlon²,

Cocking³

et al. 2014

Rec West Aust Mus Sup

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“…Other speciose groups include bathynellaceans (Cho et al, 2006a(Cho et al, , 2006b), amphipods (Finston et al, 2007), and isopods (Wilson, 2008), but some others are very poorly studied, although regularly collected in great numbers (water mites and oligochaetes for example). Copepods proved to be one of the most abundant and diverse subterranean groups here, containing both some ancient lineages and recent invaders, short range endemics and relatively widely distributed species (Nicholls, 1945a(Nicholls, , 1945bPesce and De Laurentiis, 1996;Pesce et al, 1996aPesce et al, , 1996bDe Laurentiis et al, 1999, 2001Karanovic et al, 2001;Karanovic and Pesce, 2002;Lee and Huys, 2002;Karanovic, 2003Karanovic, , 2004aKaranovic, , 2004bKaranovic, , 2005Karanovic, , 2006Karanovic, , 2008Tang et al, 2008;Karanovic and Eberhard, 2009;Karanovic and Hancock, 2009;Karanovic and Tang, 2009;Tang and Knott, 2009). In Western Australia it is necessary for any new development that potentially impacts on groundwater to be preceded by biological surveys of groundwater biodiversity.…”

Section: Introductionmentioning

confidence: 97%

First record of the harpacticoid genusNitocrellopsis(Copepoda, Ameiridae) in Australia, with descriptions of three new species

Karanovic

2010

Ann. Limnol. - Int. J. Lim.

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-Three new freshwater ameirid species were discovered in the Western Australian subterranean habitats and described in this paper. They all proved to belong to the genus Nitocrellopsis Galassi, De Laurentiis & Dole-Olivier, 1999, representing the first record of this genus in Australia. Nitocrellopsis operculata sp. nov. was collected in 2003 in the Pilbara region, during the Pilbara Regional Survey, led by the Western Australian Department of Environment and Conservation (DEC). It can be distinguished from all other congeners by the reduced armature of the antennal exopod, which is an autapomorphic feature. Also, no other species of Nitocrellopsis has cuticular windows on prosomal or urosomal somites, or six elements on the third exopodal segment of the second leg. Nitocrellopsis halsei sp. nov. and N. pinderi sp. nov. are sister-species, collected in 2007 in the neighbouring Yilgarn region, by the private environmental consulting company Bennelongia Pty Ltd. Numerous morphological similarities include somite ornamentation, armature patterns of the swimming legs and the fifth leg, as well as the shape and armature of the antennula, antenna and almost all mouth appendages, while the main differences between the two are observed in the body size and habitus appearance, caudal rami shape and size, presence/absence of large lateral pores on the fourth pedigerous somite, number of spinules on the anal operculum, number of setae on the madibular endopod, and shape of the exopod of the fifth leg. Although they differ from any other congener by a combination of characters, no significant autapomorphic features were observed. In order to find a more natural allocation of these three species, a cladistic analysis is performed on all current members of Nitocrellopsis and three outgroup taxa, based on 45 morphological characters. The resulting cladogram shows that the ingroup is well defined by at least four synapomorphies, but the Australian species from the two regions are only remotely related to each other, showing the importance of looking at small-scale patterns when inferring Gondwanan biogeography. Three sister-species pairs are recognized in the genus and a key to all 12 members is provided.

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“…6.5 km) compared with those of B. crassicephala and B. purgata (200 m), B. parapurgata and B. munaensis (700 m), and B. ganghwaensis (inter-tidal mudflat). The occurrence of the new species in a cave located so far from the coast is the same as that of Stygoridgewayia, which were collected from bores/wells located up to 450 km inland from the coast in the Cape Range Peninsula and Pilbara region, Western Australia (Tang et al 2008). Tang et al (2008) hypothesised that the occurrence of Stygoridgewayia in subterranean waters is due to secondary colonisation of freshwater after the regression of the epicontinental sea which inundated a large part of the land.…”

Section: Key To the Adult Of Boholinamentioning

confidence: 87%

A new species of Boholina (Crustacea, Copepoda, Calanoida) and a first record for stygobiotic calanoid fauna from a cave in Thailand

Boonyanusith¹,

Athibai²

2020

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A new species of Calanoida belonging to the genus Boholina Fosshagen & Iliffe, 1989 was found in a freshwater pool within a cave of the Satun province, South Thailand. It is the first record of the genus and of a stygobiotic representative of calanoid fauna in this country. The new species is most similar to B. crassicephala Fosshagen & Iliffe, 1989, based on position of genital pores, structures of P4 and P5 in both sexes, relative length of subapical spine vestige on the male right P5, and shape of the male left P5 endopods. However, this new species is distinguished from its known congeners by: (1) relatively longer distal outer spines on the male right P5 exopods, (2) smaller endopods of the male left P5 and (3) elongated apical spines on the distal exopodal segment of the female P4 and P5. Furthermore, the distinctive characteristic of the Thai Boholina is the presence of inner minute seta on the distal segment of the male right P5 exopod. Detailed descriptions of the new species and a key to all six known species of the genus Boholina is provided.

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A New Genus and Species of Ridgewayiidae (Copepoda: Calanoida) from Subterranean Waters of Northwestern Australia

Cited by 11 publications

References 21 publications

Pilbara stygofauna: deep groundwater of an arid landscape contains globally significant radiation of biodiversity

Pilbara stygofauna: deep groundwater of an arid landscape contains globally significant radiation of biodiversity

First record of the harpacticoid genusNitocrellopsis(Copepoda, Ameiridae) in Australia, with descriptions of three new species

A new species of Boholina (Crustacea, Copepoda, Calanoida) and a first record for stygobiotic calanoid fauna from a cave in Thailand

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