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A relict stem salamander: evidence from the Early Cretaceous of Siberia

100%

Skutschas P. P.

Acta Palaeontologica Polonica

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2016

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tom 61

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nr 1

The early evolution of salamanders, which are one of the three living groups of lissamphibians, is not well known. Both stem- and crown-group salamanders first appeared in the Middle Jurassic (Bathonian), but subsequently had different evolutionary histories: stem salamanders were thought to have gone extinct in the Late Jurassic, while crown salamanders persist to the present day. Here, I report the discovery of an indeterminate stem salamander in the Lower Cretaceous (Aptian–Albian) Ilek Formation of Western Siberia. This is new evidence that the most basal salamanders survived beyond the Jurassic–Cretaceous boundary and co-existed with crown-group salamanders during approximately the first 40 million years of the known history of salamanders. The recognition of stem salamanders in the Early Cretaceous of Western Siberia adds to the inventory of taxa that suggest this area was a refugium for various groups of vertebrates with Jurassic affinities.

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"Stankiewicz pine" in Crimea: some new taxonomical, chorological and paleo-landscape considerations

84%

Yena A., Yena A., Yena V.

Dendrobiology

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2005

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tom 53

63-69

The Crimean taxon at issue has long been known as Stankiewicz pine with continuing discussion around its taxonomical rank and origin. In 1995, the authors discovered the new isolated population of the taxon on Papayakaya Mt. in Crimean Sub-Mediterranean. Due to hypothetical paleogeographic reconstruction ofPleistocene coastal landscapes here, together with some newest taxonomical data, authors reinforce the notion of relict and infraspecific status of the taxon that should be related to Pinus brutia var. pityusa.

3

Mariepskopia albomaculata gen. et sp. nov. (Coleoptera: Tenebrionidae: Cnodalonini) from relict arboreal habitats in South Africa

84%

Schawaller W.

Annales Zoologici

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2012

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tom 62

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nr 2

Mariepskopia albomaculata gen. et sp. nov. from South Africa is described. The genus is placed into the tenebrionid tribe Cnodalonini and has no closer relative in Africa, but probably in the Oriental Region with the genus Asbolodes. The species has a small distribution area in Mpumalanga and KwaZulu-Natal and has probably an arboreal mode of life in the montane forest in 1300-1600 m altitude.

4

Different patterns of genetic structure of relict and isolated populations of endangered peat-bog pine [Pinus uliginosa Neumann]

84%

Wachowiak W., Prus-Glowacki W.

Journal of Applied Genetics

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2009

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tom 50

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nr 4

329-339

Recent changes in environmental conditions in populations of peat-bog pine (Pinus uliginosa Neumann) caused rapid decline or even extinction of the species in several stands in Central Europe. Conservation strategies for P. uliginosa require information about the evolutionary history and genetic structure of its populations. Using isozymes we assessed the genetic structure of P. uliginosa from four isolated stands in Poland and compared the results to genetic structures of other closely related pine species including eight populations of Pinus mugo, ten of Pinus sylvestris and one of Pinus uncinata. The level of genetic variability of P. uliginosa measured by the mean number of alleles per locus and average heterozygosity was similar to others related to P. uliginosa taxa from the reference group but it differs among populations. High genetic similarity was found between two populations of P. uliginosa from Low Silesian Pinewood. The populations were genetically distinct as compared to other populations including locus classicus of the species from the peat bog at Batorów Reserve. Very low genetic distance (DN = 0.002) and small genetic differentiation (GST = 0.003) were found between P. uliginosa and P. mugo in the sympatrie populations of the species from Zieleniec peat bog suggesting the ongoing natural hybridisation and genetic contamination of peat-bog pine from this area. Some evidence for skew in allele frequency distribution potentially due to recent bottleneck was found in population from Low Silesian Pinewood. The analysed open pollinated progeny derived from two P. uliginosa stands from Low Silesian Pine- wood showed the excess of homozygotes as compared to the maternal trees indicating high level of inbreeding (F =0.105,F = 0.081). The results are discussed in the context of evolution of P. uliginosa populations, taxonomie relationships between the analysed species and conservation strategies for active protection of peat-bog pine.

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Relict abrasion caves in New Zealand

67%

Szentes G.

Nature Conservation

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2007

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tom 63

69-76

6

Nowe dane o rozmieszczeniu Prostomis mandibularis (FABRICIUS, 1801) w Polsce (Coleoptera: Prostomidae)

59%

Krolik R., Szafraniec S.

Acta Entomologica Silesiana

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2001-2002

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tom 09-10

Ograniczanie wyników

1 Acta Entomologica Silesiana

1 Acta Palaeontologica Polonica

1 Annales Zoologici

1 Dendrobiology

1 Journal of Applied Genetics

1 Nature Conservation

1 Krolik R.

1 Prus-Glowacki W.

1 Schawaller W.

1 Skutschas P. P.

1 Szafraniec S.

1 Szentes G.

1 Wachowiak W.

1 Yena A.

1 Yena V.

1 2016

1 2012

1 2009