Arzu Karahan

Arzu Karahan
Middle East Technical University | METU · Department of Marine Biology and Fisheries

Ph.D
Botryllids' whole body regeneration, signaling pathways and immunohistochemistry

About

41
Publications
14,619
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
494
Citations
Citations since 2017
16 Research Items
272 Citations
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
Additional affiliations
January 2014 - January 2015
Middle East Technical University
Position
  • PostDoc Position
May 2012 - July 2013
Israel Oceanographic and Limnological Research Institute (IOLR)
Position
  • PostDoc Position
September 2009 - February 2011
Middle East Technical University
Position
  • PostDoc Position
Education
September 2000 - September 2007
Mersin University
Field of study
  • Zoology-population genetics
September 1996 - September 1999
Mersin University
Field of study
  • Zoology
September 1990 - June 1994
Ataturk University
Field of study
  • Education Faculty, Department of Biology

Publications

Publications (41)
Preprint
Full-text available
Members of the tunicates, a subphylum of marine filter-feeder chordates, inhabit all marine and oceanic habitats from the subtidal to the abyssal. Considered as the closest relatives to the vertebrates, the tunicates are widely used as model organisms for evo-devo, allorecognition, senescence, and whole-body regeneration studies. Yet, species bound...
Preprint
Full-text available
Botrylloides niger is an invasive marine filter-feeding invertebrate that is believed to originate from the West Atlantic region. This species of colonial tunicate has been observed on several locations along the coasts of Israel and around the Suez Canal but it has not yet been reported on the coasts of the northeastern Mediterranean Sea (NEMS), s...
Article
Full-text available
We present the prokaryotic microbial diversity of Mirror Lake, located at the end of Gilindire Cave (Turkey), whose geomorphology shows development in multiple geologic periods and by multiple mechanisms. The lake comprises brackish water with both fresh and seawater inputs. In total, 5 liters of water was sampled from Mirror Lake and was filtered...
Chapter
Full-text available
Tunicates are marine filter-feeding invertebrates that can be found worldwide and which are the closest phylogenetic group to the vertebrates (Craniata). Of particular interest, colonial tunicates are the only known chordates that can undergo Whole-Body Regeneration (WBR) via vascular budding. In Botrylloides anceps, a fully functional adult regene...
Article
Full-text available
Legally protected plants are illegally traded through online sales platforms and orchids are a significant component of this wildlife trade. This study focused on salep, a compound product made from wild collected orchid tubers from several genera—including Anacamptis, Dactylorhiza, Himantoglossum, Ophrys, Orchis, Serapias— whose harvest endangers...
Article
Full-text available
The scopes related to the interplay between stem cells and the immune system are broad and range from the basic understanding of organism’s physiology and ecology to translational studies, further contributing to (eco)toxicology, biotechnology, and medicine as well as regulatory and ethical aspects. Stem cells originate immune cells through hematop...
Article
Full-text available
Barnacles are common epibionts on a wide range of marine organisms, including turtles. Chelonibia testudinaria is a successful epibiotic barnacle species, and mainly turtles are responsible for their wide range dispersal. In the present study, the mitochondrial Cytochrome Oxidase I (COI) gene haplotypes of C. testudinaria from Caretta caretta hosts...
Poster
Full-text available
Globally distributed sea squirts (tunicates) are one of the most diverse taxonomic group among the chordates. They can undergo whole-body regeneration when it considers that regenerative abilities of vertebrates are highly limited and mostly restricted to the tissue or organ level, research on colonial tunicates is emerging as novel and highly prom...
Article
Full-text available
This volume contains the main results of the EC FP7 “The Ocean of Tomorrow” Project CoCoNet, divided in two sections: 1) a set of guidelines to design networks of Marine Protected Areas in the Mediterranean and the Black Seas; 2) a smart wind chart that will allow evaluating the possibility of installing Offshore Wind Farms in both seas. The concep...
Presentation
Mediterranean tapeweed (Posidonia oceanica), a species of seagrass, and sand lily (Pancratium maritimum) are endangered angiosperms native to the Mediterranean Sea. The cascading effects of change in the Turkey ecosystem, originating from direct and indirect human impacts, are maintaining a loss of seagrasses in shallow marine waters and of sand li...
Article
In this study, the DNA barcode of a regional Lessepsian sighting of the slender ponyfish Equulites elongatus is integrated with morphometric and meristic descriptors as a case study to address further identification problems in the Mediterranean Sea. The study also aims to contribute to the regional mitochondrial cytochrome oxidase I information po...
Presentation
Cataloguing the biodiversity of life in earth is not a simple task. We still know only a minor fraction (10-15%) of life’s diversity and current taxonomic methods may be inadequate or too slow to capture and manage biodiversity. This percentage is expected to be lower for marine taxa. Biodiversity in the oceans was recently estimated at just about...
Article
Chromosome number, morphology and location of the nucleolus organizer region (NOR) are useful cytological characters for taxonomic and evolutionary studies. The karyotype of Upeneus moluccensis from the north-eastern Mediterranean was investigated through conventional Giemsa staining, Ag-NOR staining, C-banding and GTG-banding techniques. The resul...
Poster
P. oceanica is a seagrass species performing key ecosystem functions and endemic to Mediterranean coasts. Both direct and indirect anthropogenic factors are contributing to the global seagrass loss which reached to a level of 5% per year today (Marba et al. 2005). This rate is increasing as a nonlinear process with cascading effects, and the recove...
Article
Full-text available
Two anchovy forms identified from their external morphology and designated as ‘Silver’ and ‘Blue’ anchovies were captured in Mersin Bay (Eastern Mediterranean Sea). Silver anchovy seemed to inhabit shallower waters (9–77 m) than Blue anchovy (majority at depths of 69–111 m). Significant differences in body shape, which was analyzed through geometri...
Article
This paper describes the karyotype analysis of Garra rufa samples with G-, C- banding and Ag-NOR staining techniques from four distinct localities (Mersin, Hatay, Kahramanmaras and Sivas) in Turkey. The diploid chromosomes number was found as 50 in females of both Mersin and Sivas regions samples. The karyotype was determined as 26M + 10SM + 8ST +...
Article
Full-text available
Two anchovy forms identified from their external morphology and designated as 'Silver' and 'Blue' anchovies were captured in Mersin Bay (Eastern Mediterranean Sea). Silver anchovy seemed to inhabit shallower waters (9-77 m) than Blue anchovy (majority at depths of 69-111 m). Significant differences in body shape, which was analyzed through geometri...
Article
Full-text available
The karyotype of Clarias gariepinus was described by means of G-banding, C-banding, Q-banding, and Ag-NORs (NORs) staining in this study. Samples were collected from 2 regions of Turkey: the Göksu Delta and Orontes River. Although samples from both regions had the same diploid chromosome number and fundamental arm number, (2n = 56, FN = 100), they...
Article
Full-text available
In this study cytogenetic analysis were carried out on Garra variabilis (Heckel, 1843) individuals from Savur stream (Mardin). The karyotype of Garra variabilis was analyzed using G-banding, C-banding, Ag-NOR staining and Q-banding techniques. Diploid chromosomes number of specimens was determined as 2n=102. However, two karyotype formulae were ide...
Article
Full-text available
The karyotype of Pseudophoxinus antalyae was analyzed using G-banding, C-banding, Ag-NOR staining, and Q-banding. Chromosome analysis of this species, which lives in the Berdan River and Berdan Dam Lake, was performed with the air-drying technique, using gill and fin epithelium cells. The diploid chromosome number of P. antalyae was determined to b...
Article
Full-text available
Goksu Delta is a specially protected area in the Mediterranean region of Turkey. The delta is classified as a Wetland of International Importance according to the RAMSAR Convention on Wetlands of International Importance. Increases in population have recently taken place in this region due to heavy agricultural activities and discharges of anthropo...
Article
Full-text available
Long-day photoperiods are considered as an effective managerial tool in manipulating somatic growth and reproduction in a number of fish species. Effects of three different artificial long-day photoperiods on somatic growth and gonadal development of Nile tilapia (Oreochromis niloticus L.) were investigated in this study. Swim-up fry with a mean in...
Article
Chromosome analysis of Clarias lazera living in wet lands located in Göksu River (Göksu Delta) was accomplished by modified air-drying.Clarias lazera was found to have 18 metacentric, 26 submetacentric and 12 acrocentric chromosomes. Twenty- five systematically important meristic and morphometric characters of Clarias lazera in the Göksu Delta were...

Network

Cited By

Projects

Projects (2)
Archived project
The spatial and temporal distribution of microplastics and BPA in the water column in Mersin Bay will be monitored in this study. In addition, to determine the change of land-based BPA contamination input to marine environment, one year monitoring activity will take place in several rivers with high flow-rate located in the study area.