The fossil species of Bosmina, App. 1 of Studies on Connecticut Lake sediments

Austin, Thomas

doi:10.2475/ajs.240.5.325

Cited by 20 publications

(13 citation statements)

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“…Bosmina was one of the rst genera to be studied with paleolimnology. Unlike Bosmina, subfossil remains for Bosminopsis are unknown from the Holocene and Pleistocene bottom sediments [119,120]. It seems unlikely that a detailed fossil record will be found for Bosminopsis.…”

Section: Old Mesozoic Groupmentioning

confidence: 99%

One More “Living Fossil”: Mesozoic Lineage Differentiation, Morphological Stasis and Weak Phylogeographic Structure in Eurasia in the Bosminopsis Deitersi Group (Crustacea: Cladocera: Bosminidae)

Garibian

Карабанов

Neretina

et al. 2020

Preprint

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Background: Water fleas (Crustacea: Cladocera) of the Family Bosminidae have been studied since the founding of paleolimnology and freshwater ecology. However, one species, Bosminopsis deitersi, stands out for its exceptional multicontinental range and broad ecological requirements. Results: Here we use an integrated morphological and multilocus genetic approach to to address the species problem in B. deitersi. We analyzed 32 populations of B. deitersi s. lat. Two nuclear and two mitochondrial loci were used to carry out the bGMYC, mPTP and STACEY algorithms for species delimitation. Detailed morphological study was also carried out across continents. The evidence indicated a widely distributed cryptic species in the Old World (Bosminopsis zernowi) that is genetically divergent from B. deitersi s.str. We revised the taxonomy and redescribed the species in this complex. Our sampling indicated that B. zernowi had weak genetic differentiation across its range. A molecular clock and biogeographic analysis with fossil calibrations suggested a Mesozoic origin for the Bosminopsis deitersi group. Conclusions: Our evidence rejects the single species hypothesis for B. deitersi and is consistent with an ancient species group (potentially Mesozoic) that shows marked morphological conservation. The family Bosminidae, then, has examples of both rapid morphological evolution (Holocene Bosmina), and morphological stasis (Bosminopsis).

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Section: Old Mesozoic Groupmentioning

confidence: 99%

One More “Living Fossil”: Mesozoic Lineage Differentiation, Morphological Stasis and Weak Phylogeographic Structure in Eurasia in the Bosminopsis Deitersi Group (Crustacea: Cladocera: Bosminidae)

Garibian

Карабанов

Neretina

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Bosmina was one of the first genera to be studied with paleolimnology. Unlike Bosmina, subfossil remains for Bosminopsis are unknown from the Holocene and Pleistocene bottom sediments (Austin, 1942;Hofmann, 1984). It seems unlikely that a detailed fossil record will be found for Bosminopsis.…”

Section: Old Mesozoic Groupmentioning

confidence: 99%

Table 1: Genes, primers and annealing temperatures used in this study of the Bosminopsis deitersi species complex.

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Section: Old Mesozoic Groupmentioning

confidence: 99%

Figure 14: Bosminopsis zernowi Linko, 1901, adult male from Lake Livadijskoe, Primorski Territory, Far East of Russia.

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The fossil species of Bosmina, App. 1 of Studies on Connecticut Lake sediments

Cited by 20 publications

References 0 publications

One More “Living Fossil”: Mesozoic Lineage Differentiation, Morphological Stasis and Weak Phylogeographic Structure in Eurasia in the Bosminopsis Deitersi Group (Crustacea: Cladocera: Bosminidae)

One More “Living Fossil”: Mesozoic Lineage Differentiation, Morphological Stasis and Weak Phylogeographic Structure in Eurasia in the Bosminopsis Deitersi Group (Crustacea: Cladocera: Bosminidae)

Table 1: Genes, primers and annealing temperatures used in this study of the Bosminopsis deitersi species complex.

Figure 14: Bosminopsis zernowi Linko, 1901, adult male from Lake Livadijskoe, Primorski Territory, Far East of Russia.

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