A revised identification guide to the fairy shrimps (Crustacea: Anostraca: Anostracina) of Australia

Timms, Brian V.

doi:10.24199/j.mvsr.2015.19

Cited by 12 publications

(12 citation statements)

References 11 publications

(15 reference statements)

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“…Australian Branchinella exhibit substantial variation both in phenotypic traits such as body size (8-60 mm), eye size and egg size (113-565 lm), and in the habitat types occupied (Geddes, 1981;Timms, 2004Timms, , 2009Timms & Lindsay, 2011). Branchinella is known from all sorts of small (<2 ha), shallow (<1 m) temporary aquatic systems ranging from ephemeral puddles and rock pools to larger vernal ponds, salt pans, claypans and temporary creeks across broad ranges of temperature and salinity (0-62 g L À1 ) that may hold water from 1 up to 10 months (Timms, 2009;Pinceel et al, 2013).…”

Section: Model Organisms and Study Systemmentioning

confidence: 99%

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Environmental change as a driver of diversification in temporary aquatic habitats: does the genetic structure of extant fairy shrimp populations reflect historic aridification?

et al. 2013

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Summary Over the past 65 my, the Australian continent experienced a pronounced shift from predominantly wet, tropical, conditions to a much drier climate. Little is known, however, about the effect of this important continent‐wide event on freshwater organisms and ecosystems. Fairy shrimps (Crustacea; Anostraca) are ancient and specialist inhabitants of temporary and saline aquatic habitats that typically prevail under semiarid conditions. Therefore, they present suitable evolutionary models to study scenarios of historic environmental change and the impact of a drying climate on aquatic ecosystems in particular. Focussing on both macro‐ and micro‐evolution in the fairy shrimp genus Branchinella and using mitochondrial DNA data (16S and COI), we evaluated whether patterns of contemporary genetic variation reflect historic climate change. There is a close match between episodes of Cenozoic climate change and macro‐evolutionary diversification in Australian fairy shrimps, presumably mediated by a progressive increase in the abundance and diversity of temporary aquatic habitats on the continent. Micro‐evolutionary patterns reflect both range expansion and recent contraction, linked to extreme drying events during the Pleistocene glacial periods. This study effectively illustrates the potential long‐term effects of environmental change on the diversity and the evolutionary trajectories of the fauna of temporary waters. Moreover, it demonstrates the importance of adaptation to new environments and non‐adaptive processes, such as divergence in isolation, for explaining extant diversity patterns in this particular environment.

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Section: Model Organisms and Study Systemmentioning

confidence: 99%

“…The emergence of this clade, which groups two species that effectively prey on zooplankton and other fairy shrimps using extended phyllopods (Timms, 2004), represents a significant innovation. The origin of the predatory clade is, for example, situated between 33.89-18.31 and 13.96-7.81 mya.…”

Section: Macro-evolutionary Patternsmentioning

confidence: 99%

Environmental change as a driver of diversification in temporary aquatic habitats: does the genetic structure of extant fairy shrimp populations reflect historic aridification?

et al. 2013

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Section: Branchinellamentioning

confidence: 99%

“…Branchinella, with 40 described species, is the most speciose of the Australian anostracan genera (Timms 2015a(Timms , 2015b. Many species have only recently been described (Timms 2015b), with cryptic lineages identified using genetic data (Pinceel et al 2013b). Only two species, Branchinella buchananensis Geddes and Branchinella simplex Linder, are halophiles; the other species are either strictly freshwater or tolerant of only low levels of salinity (Pinceel et al 2013a;Timms 2014).…”

Section: Branchinellamentioning

confidence: 99%

Biology and conservation of the unique and diverse halophilic macroinvertebrates of Australian salt lakes

Lawrie¹,

Chaplin²,

Pinder³

2021

Mar. Freshwater Res.

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This study synthesises information on the biology of the unique and diverse halophilic macroinvertebrates of Australian salt lakes, focusing on gastropods and crustaceans. This information is needed to evaluate and manage the threats posed to these invertebrates by increased periods of drought and secondary salinisation. Most of these species are endemic to Australian salt lakes, and some have adapted to extreme conditions (e.g. salinities .100 g L À1 and pH ,5). This study identifies key general findings regarding the taxonomy, ecology and life histories of these invertebrates, such as that many 'new' species have been uncovered in the past 20 years, with more likely to come. The study also identifies critical knowledge gaps, such as the need to elucidate the abiotic and biological drivers of the field distributions of species, including why some species are widespread and common whereas other congeneric species are rare or have narrow distributions. Those species that are either restricted to low salinity environments or survive dry periods as aestivating adults (as opposed to desiccation-resistant eggs) are probably the most vulnerable to increasing salinisation and drought. Future work should prioritise the development of a sound taxonomy for all groups, because this is needed to underpin all other biological research.

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“…Presently, 18 described species of Parartemia are known [21–24] with at least one undescribed species [25]. Molecular analyses of most of these support specific delineations based on morphological differences, though P. contracta could represent two species [26], I. Kappas, pers.…”

Section: Reviewmentioning

confidence: 99%

A review of the biology of Australian halophilic anostracans (Branchiopoda: Anostraca)

Timms

2014

J of Biol Res-Thessaloniki

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Australia has two species of Artemia: A. franciscana introduced to salt works and apparently not spreading, and parthenogenetic Artemia presently spreading widely through southwestern Australia. In addition, and unique to Australia, there are 18 described species of Parartemia in hypersaline lakes. All Parartemia use a lock and key mechanism in amplexus and hence have distinctive antennal-head features in males and thoracic modifications in females. Various factors, including climatic fluctuations and isolation, contribute to a far higher diversity in the southwest of the continent. There are few congeneric occurrences of Parartemia possibly due to their consuming largely uniform allochthonous organic matter rather than multisized planktonic algae. In P. zietziana there are 2–3 cohorts a year each persisting 3–9 months. Up to 80% of assimilation is used in respiration and at times energy balance is negative, which accounts for its continuous mortality, inconsistent growth rates and unpredictable recruitment. Many species are as osmotically competent as Artemia, but are at a disadvantage in hypersaline waters >250 g L-1 as they lack the haemoglobin of Artemia. Parartemia acidiphila and P. contracta live in markedly acid waters to pH 3.5, where dissolved carbonate and bicarbonate are unavailable, and hence they must have evolved an additional proton pump to produce ATP from endogenous CO2. Occurrences of some species have been severely curtailed by lake salinisation (which includes acidification and changes in hydroperiod), so that their continued existence is in doubt. A few species of the otherwise freshwater Branchinella occur in mainly hyposaline waters.

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A revised identification guide to the fairy shrimps (Crustacea: Anostraca: Anostracina) of Australia

Cited by 12 publications

References 11 publications

Environmental change as a driver of diversification in temporary aquatic habitats: does the genetic structure of extant fairy shrimp populations reflect historic aridification?

Environmental change as a driver of diversification in temporary aquatic habitats: does the genetic structure of extant fairy shrimp populations reflect historic aridification?

Biology and conservation of the unique and diverse halophilic macroinvertebrates of Australian salt lakes

A review of the biology of Australian halophilic anostracans (Branchiopoda: Anostraca)

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