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The mitochondrial genome analysis of unique cave dweller sponge Eunapius subterraneus Sket & Velikonja, 1984 (CROSBI ID 567003)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Lukić-Bilela, Lada ; Pleše, Bruna ; Bruvo- Mađarić, Branka ; Imešek, Mirna ; Bilandžija, Helena ; Ćetković, Helena The mitochondrial genome analysis of unique cave dweller sponge Eunapius subterraneus Sket & Velikonja, 1984 // ICSB 2010 Abstract Book / Moškrič, Ajda ; Trontelj, Peter (ur.). Postojna: Organizing Committee ICSB, 2010. str. 62-62

Podaci o odgovornosti

Lukić-Bilela, Lada ; Pleše, Bruna ; Bruvo- Mađarić, Branka ; Imešek, Mirna ; Bilandžija, Helena ; Ćetković, Helena

engleski

The mitochondrial genome analysis of unique cave dweller sponge Eunapius subterraneus Sket & Velikonja, 1984

Fossil traces extracted from rock sediments in an oil field on the Arabian Peninsula, dating back between 635 million and 750 million years ago, are implying that sponges (Porifera) are the oldest known animals. Hence, we can postulate that sponges were the only animal present until about 580 million years ago, when other complex life forms began to evolve. Life on Earth was severe in this period and deep seas did not yet contain oxygen, therefore sponges inhabited shallow ocean basins. Sponges evolved along with physico-chemical changes in environment which gave rise to the big bang of metazoan radiation prior to the period of Cambrian Explosion. Althought sponges posses plain morphology (absence of organs and tissues) and their phylogenetic position is at the base of the kingdom Metazoa several studies showed that sponges have strikingly complex genomes. Furthermore, their gene content and functional repertoire are more related to their orthologs in human that to either Drosophila melanogaster or Caenorhabditis elegans counterparts, so studies of these living fossils are important in terms of evolution and phylogeny. Sponges are mainly marine but a few taxa within Demospongiae (suborder Spongillina) live in freshwater. Cave fauna stands out among all other freshwater biota owning peculiar species which are usually distinct from that of surrounding freshwater habitats. Eunapius subterraneus is the only stygobitic member of the suborder Spongillina, therefore it was a challenge to elucidate the origin of this unique sponge by obtaining the complete mitochondrial genome data. Hopefully, more freshwater sponge mitochondrial DNA sequences will be available so that the phylogeny of this group could be completely resolved and progress in studies of biology, evolution, biodiversity and efficient conservation will be possible.

Porifera; spongia; Eunapius subterraneus; mitochondrial DNA

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Podaci o prilogu

62-62.

2010.

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objavljeno

978-961-269-286-5

Podaci o matičnoj publikaciji

ICSB 2010 Abstract Book

Moškrič, Ajda ; Trontelj, Peter

Postojna: Organizing Committee ICSB

Podaci o skupu

20th International Conference on Subterranean Biology

predavanje

29.08.2010-03.09.2010

Postojna, Slovenija

Povezanost rada

Biologija