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Ju­li­an Kie­fer

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Scientist

Department of Symbiosis

MPI for Marine Microbiology
Celsiusstr. 1
D-28359 Bremen
Germany

Raum: 

2246

Telefon: 

+49 421 2028-8970

Julian Kiefer
 

Re­se­arch To­pic

Back to the roots: Invasion of the Mediterranean Sea

I work with the gut­less oli­gochae­te spe­cies known as Ola­vi­us al­gar­ven­sis. Around 6 mil­li­on ye­ars ago, an ex­tra­or­di­na­ry geo­lo­gi­cal event cal­led the Mes­si­ni­an sal­in­i­ty cri­sis took place in the Me­di­ter­ra­ne­an re­gi­on, du­ring which the Me­di­ter­ra­ne­an Sea ex­pe­ri­en­ced a pro­lon­ged pe­ri­od of de­sic­ca­ti­on fol­lo­wed by re­floo­ding, our hy­po­the­sis pro­po­ses that O. algarvensis suc­cess­ful­ly in­va­ded the Me­di­ter­ra­ne­an Sea once it was floo­ded again.

To va­li­da­te this hy­po­the­sis, I will con­duct ex­ten­si­ve sam­pling across va­rious lo­ca­ti­ons throughout the Me­di­ter­ra­ne­an Sea. Through com­pre­hen­si­ve in­ves­ti­ga­ti­ons into the ge­ne­tic, phy­sio­lo­gi­cal, and eco­lo­gi­cal as­pects of Olavius algarvensis spe­ci­mens, as well as their as­so­cia­ted en­do­sym­bi­onts, our aim is to ac­qui­re a more pro­found un­der­stan­ding of the sym­bio­tic re­la­ti­ons­hip dy­na­mics and the le­vel of sym­bio­tic fi­de­li­ty wi­t­hin this spe­cies.

Collecting samples in the sea
Collecting samples in the sea
Sorting samples in the wet-lab
Sorting samples in the wet-lab
Collecting at the Carry Bow Cay Field Station in 2023 with Christer Erséus
Collecting at the Carry Bow Cay Field Station in 2023 with Christer Erséus

Pu­bli­ca­ti­ons

2023

Kiefer, J. S. T.; Bau­er, E.; Oku­de, G.; Fu­katsu, T.; Kal­ten­poth, M.; Engl, T.: Cu­ti­cle sup­ple­men­ta­ti­on and ni­tro­gen re­cy­cling by a dual bac­te­ri­al sym­bio­sis in a fa­mi­ly of xy­lo­pha­gous beet­les. The ISME Jour­nal (2023). DOI: 10.1038/s41396-023-01415-y

2022

Kiefer, J. S. T.; Schmidt, G.; Krü­se­mer, R.; Kal­ten­poth, M.; Engl, T.: Wolbachia cau­ses cy­to­plas­mic in­com­pa­ti­bi­li­ty but not male-kil­ling in a grain pest beet­le. Mole­cu­lar Eco­lo­gy (2022). DOI: 10.1111/mec.16717


2021

Kiefer, J. S. T.; Bats­ukh, S.; Bau­er, E.; Hi­ro­ta, B.; Weiss, B.; Wierz, J. C.; Fu­katsu, T.; Kal­ten­poth, M.; Engl, T.: In­hi­bi­ti­on of a nut­ri­tio­nal en­do­sym­bi­ont by gly­pho­sa­te ab­olis­hes mu­tua­lis­tic be­ne­fit on cu­ti­cle syn­the­sis in Oryzaephilus surinamensis. Com­mu­ni­ca­ti­ons Bio­lo­gy (2021). DOI: 10.1038/s42003-021-02057-6


2018

Jehn, J.; Ge­bert, D.; Pi­pi­les­cu, F.; Stern, S.; Kiefer, J. S. T.; Hewel, C.; Ro­sen­kranz, D.: PIWI ge­nes and piR­NAs are ubi­qui­tous­ly ex­pres­sed in mol­lusks and show pat­terns of li­ne­age-spe­ci­fic ad­ap­ta­ti­on. Com­mu­ni­ca­ti­ons Bio­lo­gy (2018). DOI: 10.1038/s42003-018-0141-4

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