SPP 1991 Taxon-OMICS


The Taxonomic Project “Ophiuroid phylogenomics: Illuminating dark abyssal biodiversity” is part of the DFG priority program 1991 “Taxon-Omics: New approaches for discovering and naming biodiversity”. The researchers from this project combine in gerneral “taxonomy,” the process of discovering and naming new species, with exciting 21st century “-omics’”methodologies, like genomics and transcriptomics.

The main research area of the project is the Clarion-Clipperton-Zone (CCZ) in the east Pacific. This area is from special interest, because it holds the highest density of polymetallic nodules in the oceans. Previous studies discover a higher biodiversity than expected, so our project further wants to study the biodiversity of the ophiuroid fauna.

In our ongoing priority program, we collaborate with ophiuroid specialist and use classical methods in taxonomy, as for example scanning electron microscopy, to identify and describe the ophiuroid fauna focussing on the CCZ and comparative material. But we also use modern genomics methods, as for example 2b-RAD for population genetic studies or the exon capture system for phylogenetic studies. The combination will help us to infer the evolutionary history of the ophiuroids and describe the biodiversity in the abyssal deep-sea. The project has in general three interrelated components. The first is to delimitate the found ophiuroid species with morphological characteristics but also with classical Sanger sequencing using DNA barcoding. With these methods one approach will be to do a revision of the genus Ophiotholia with describing a possible new species. The second step is to analyse the phylogenetic relationships. For this we use the Next Generation Sequencing (NGS) method 2b-RAD for the global distributed species Silax daleus and Amphiophiura bullata in order to see their connectivity through their biogeographic occurrence which will be further analysed with the NGS exon capture methodogy in collaboration with the Australian colleagues Dr. Tim O’Hara and Dr. Andrew Hugall. The last step will be the phylogeographic relationship and molecular dating to discover the evolutionary history of the abyssal ophiuroid fauna.

Prof. Dr. Pedro Martínez Arbizu
Head of DZMB
DZMB Team2
Dr. Magdalini Christodoulou
Wissenschaftliche Mitarbeiterin

Forschungsgebiete/Research interests:
Biodiversity of deep sea abyssal plains and hydrothermal vents
Taxonomy and systematics of Caridean shrimps
Barcoding macrofauna

2020
CHRISTODOULOU M., O´HARA T., HUGALL A., KHODAMI S., RODRIGUES C.F., HILARIO A., VINK A., MARTINEZ ARBIZU P.M.
2020. Unexpected high abyssal ophiuroid diversity in polymetallic nodule fields of the Northeast Pacific Ocean, and implications for conservation. Biogeosciences, 17: 1–32.

DE GRAVE S., KRISHNAN A.S., KUMAR A.K.P., CHRISTODOULOU M. 2020. A new species of Alpheus from India (Crustacea, Decapoda, Alpheidae). Zootaxa, 4750 (2): 277–285.

2019
CHRISTODOULOU M., O´HARA T., HUGALL A., MARTINEZ ARBIZU P.
2019. Dark biodiversity in an abyssal mine field. Current Biology, 29 (22): 1–4.

KLOTZ W., VON RINTELEN T., CHRISTODOULOU M. 2019. Middle East Caridina (Decapoda: Atyidae): redescription of C. fossarum Heller, 1862, description of three new species, and remarks on the status of C. syriaca Bouvier, 1904 and C. babaulti basrensis Al-Adhub & Hamzah, 1987. Zoologischer Anzeiger, 283: 161–185.

CHRISTODOULOU M., ILIFFE T.M., DE GRAVE S. 2019. A new anchialine cave dwelling species of Potamalpheops from the Solomon Islands (Crustacea, Decapoda, Alpheidae). Crustacean Research, 48: 11–21.

2018
CHRISTODOULOU M., KIHARA T.C.
2018. Lectotype designation and distribution updates on the freshwater shrimp species Atyaephyra stankoi Karaman 1972. Zootaxa, 4531 (1):  123–133.

2017
CHRISTODOULOU M., ANASTASIADOU C.
2017. Sexual dimorphism in the shrimp genus Atyaephyra de Brito Capello, 1867 (Decapoda, Atyidae): the case study of A. thyamisensis. Journal of Crustacean Biology, 37 (5): 588–601.

CHRISTODOULOU M., ANASTASIADOU C., JUGOVIC J., TZOMOS T. 2017. Chapter 7. Freshwater shrimps (Atyidae, Palaemonidae, Typhlocarididae) in the broader Mediterranean Region: Distribution, life strategies, threats and conservation challenges. In: A Global Overview of the Conservation of Freshwater Decapod Crustaceans. Kawai T., Cumberlidge N. (eds), pp. 199–236. Springer, New York, USA.

2016
PAVLOUDI C., CHRISTODOULOU M., MAVIDIS M.
2016. Macrofaunal assemblages associated with the sponge Sarcotragus foetidus Schmidt, 1862 (Porifera: Demospongiae) at the coasts of Cyprus and Greece. Biodiversity Data Journal, 4: e8210.

2013
CHRISTODOULOU M., PARASKEVOPOULOU S., SYRANIDOU E., KOUKOURAS A.
2013. The amphipod (Crustacea, Peracarida) fauna of the Aegean Sea, and comparison with those of the neighbouring seas. Journal of the Marine Biological Association of the United Kingdom, 93 (5): 1303–1327.

2012
CHRISTODOULOU M., ANTONIOU A., MAGOULAS A., KOUKOURAS A.
2012. Revision of the freshwater genus Atyaephyra (Crustacea, Decapoda, Atyidae) based on morphological and molecular data. ZooKeys, 229: 53–110.  

2011
TZOMOS T., CHARTOSIA N., CHRISTODOULOU M. KITSOS M.-S.
2011. New records and range expansion of lessepsian migrants in the Levantine and Aegean Seas. Marine Biodiversity Records, 3: e10.

2009
CHRISTODOULOU M., TZOMOS T., CHARTOSIA N., KITSOS M.-S.
2009. Decapod crustaceans new to the fauna of Cyprus. Marine Biodiversity Records, 2: e168.

2005
KITSOS M.-S., CHRISTODOULOU M., ARVANITIDIS C., MAVIDIS M., KIRMITZOGLOU I., KOUKOURAS A.
2005. Composition of the organismic assemblage associated with Caretta caretta. Journal of the Marine Biological Association of the United Kingdom, 85 (2): 257–261.

2004
ANASTASIADOU C., KOUKOURAS A., MAVIDIS M., CHARTOSIA N., MOSTAKIM M., CHRISTODOULOU M., ASLANOGLOU C.
2004. Morphological variation in Atyaephyra desmarestii (Millet, 1831) within and among populations over its geographical range. Mediterranean Marine Science, 5 (2): 5–13.

2003
KITSOS M.-S., CHRISTODOULOU M., KALPAKIS S., NOIDOU M., KOUKOURAS A.
2003. Cirripedia thoracica associated with Caretta caretta (Linnaeus, 1758) in the northern Aegean Sea. Crustaceana, 76 (4): 403–409.