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Browsing Biyoloji / Biology by Author "Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Bölümü"

Now showing items 1-20 of 84

A light- and electron microscopic study of primordial germ cells in the zebra fish (Danio rerio)

Yön Ertuğ, Nazan Deniz (SOC BIOLGIA CHILE, 2012)

In sexually reproducing organisms, primordial germ cells (PGCs) give rise to the cells of the germ line, the gametes. In many animals, PGCs are set apart from somatic cells early during embryogenesis. This study explores ...
A NEW SPECIES OF EUPTEROTEGAEUS (ACARI, ORIBATIDA, COMPACTOZETIDAE) FROM TURKEY

Susyal, Beril; Baran, Şule (AMER ENTOMOL SOC, 2018)

We identify a new species belonging to the genus Eupterotegaeus Berlese, 1916 (Oribatida, Compactozetidae) based on samples collected in 2015 from Hendek town, Sakarya Province. Morphological features of Eupterotegaeus ...
A new species of Rhynchobelba Willmann, 1953 (Acari: Oribatida: Suctobelbidae) from Turkey

Baran, Şule (ENTOMOLOGICAL SOC TURKEY, EGE UNIV, 2013)

The new species Rhynchobelba ozkani n. sp. differs from the other species of the genus Rhynchobelba by the shape of rostrum, body dimensions, length and shape of sensillus and type of rostral seta.
Alkaline protease production of Bacillus cohnii APT5

Tunç, Kenan (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2012)

An obligate alkaliphilic Bacillus strain was isolated from a soil sample and identified as Bacillus cohnii APT5 based upon phylogenetic and phenotypic analyses. The optimum growth pH of B. cohnii APT5 was 10.0. B. cohnii ...
Antibacterial nano biocomposite poly(epsilon-caprolactone) films with nano Ag-hydroxyapatite filler particles

Ayseguel Hos; Tunç, Kenan; Ugursoy Olgun (TAYLOR & FRANCIS LTD, 2019)

This study describes the development of new antimicrobial nanocomposite poly(epsilon-caprolactone) (PCL) films by using the nanosilver coated hydroxyapatite particles. Firstly, the synthesis of hydroxyapatite (HAP) powder ...
Assessment of the effects of zinc on the growth and antioxidant enzymes in Scenedesmus ellipsoideus Chodat

Hediye Elif Kilic; Hatice Tunca; Ongun Sevindik, Tuğba; Ali Dogru (WALTER DE GRUYTER GMBH, 2019)

This study explores the activity of total superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR), biomass accumulation and chlorophyll a content in Scenedesmus ellipsoideus Chodat grown under ...
BENTHIC DIATOMS AS INDICATORS OF WATER QUALITY IN THE ACARLAR FLOODPLAIN FOREST (NORTHERN TURKEY)

Ongun Sevindik, Tuğba; Küçük, Fırat (PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2016)

The structure and diversity of the epilithic and epiphytic diatom community and their relationship with the physicochemical parameters of the Acarlar Floodplain Forest were studied. Also, diatom indices and their applicability ...
Birds of lake acarlar and environmental problems

Uzun, Ali; Uzun, Abdullah (FOUNDATION ENVIRONMENTAL PROTECTION & RESEARCH-FEPR, 2008)

178 birds species from 39 families belong to 17 order defined in the research, carried out between 2001-2003 in Lake Acarlar in northeastern Marmara region. Passeriformes has been determined to be the most dominant order ...
Bony structure dimensions-fish length relationships of pike (Esox lucius L., 1758) in Lake Ladik (Samsun, Turkey)

Okan Yazicioglu; Savas Yilmaz; Mesut Erbasaran; Helli, Selma; Nazmi Polat (UNIV ORADEA PUBL HOUSE, 2017)

The relationships between otolith length (OL), otolith width (OW), otolith weight (OWE), cleithrum length (CL) and fish length (TL) of pike captured from Lake Ladik were evaluated using 11 different mathematical models. ...
Breeding ecology and behaviour of the Great Reed Warbler, Acrocephalus arundinaceus, in Poyrazlar Lake, Turkey

Uzun, Ali; Uzun, Belgin; Sağıroğlu, Mehmet (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2014)

In this study, the breeding ecology and behaviour of the Great Reed Warbler, Acrocephalus arundinaceus, was studied at Poyrazlar Lake, Turkey. The breeding period started in the first week of May. The incubation period ...
Changes in the Lake Ladik fish community (1972-2004) and ichthyofauna of its inlet and outlet streams (Samsun, Turkey)

Helli, Selma (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2009)

This research was conducted to record the fish species inhabiting Lake Ladik and its inlet and outlet streams between July 2003 and August 2004. Electrofishing equipment, fishing cast net, fisherman's dip net, and fishing ...
Clastogenic effects of food additive citric acid in human peripheral lymphocytes

Serkan Yılmaz; Fatma Ünal; Deniz Yüzbaşıoğlu; Aksoy, Hüseyin (SPRINGER, 2008)

Clastogenic properties of the food additive citric acid, commonly used as an antioxidant, were analysed in human peripheral blood lymphocytes. Citric acid induced a significant increase of chromosomal aberrations (CAs) at ...
Comparison of nestling nutrition and growth of Black-crowned Night Heron, Nycticorax nycticorax, and Little Egret, Egretta garzetta

Uzun, Ali; Uzun, Belgin; Uzun, Abdullah (MAX KASPAREK VERLAG, 2008)

Comparison of nestling nutrition and growth of Black-crowned Night Heron, Nycticorax nycticorax, and Little Egret, Egretta garzetta by Ali Uzun and Belgin Uzun Black-crowned Night Herons (Nycticorax nycticorax Linnaeus, ...
Copper bioremoval by novel bacterial isolates and their identification by 16S rRNA gene sequence analysis

Tunç, Kenan (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2012)

Copper-tolerant bacteria were isolated from soil samples taken from a region where metal industries are located. After selecting 2 isolates with relatively higher bioremoval efficiency, the effects of increasing copper ...
Cytogenetic effects of citric acid and benzoic acid on Allium chromosomes

Serkan Yılmaz; Fatma Ünal; Aksoy, Hüseyin; Deniz Yüzbaşıoğlu; Mustafa Çelik (PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2008)

The effects of the commonly used food additives citric acid (CA) and benzoic acid (BA) have been investigated on root tips of Allium sativum L. Allium and Allium anaphase-telophase tests were used as test systems. Roots ...
Data Descriptor: A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins

Tunca, Hatice (NATURE PUBLISHING GROUP, 2018)

Under ongoing climate change and increasing anthropogenic activity, which continuously challenge ecosystem resilience, an in-depth understanding of ecological processes is urgently needed. Lakes, as providers of numerous ...
Determination of Biochemical Composition and Mineral Contents of Deep Sea Pink Shrimp (Parapenaeus longirostris Lucas, 1846) Caught from the Gulf of Izmit, Turkey

Yön Ertuğ, Nazan Deniz (KAFKAS UNIV, VETERINER FAKULTESI DERGISI, 2010)

The aim of this study is to identify seasonal variation of biochemical composition and mineral content (K, Na, Ca, Fe, Mg) in abdominal muscle tissues and hepatopancreas of the Deep sea pink shrimp (Parapenaeus longirostris) ...
Developmental Toxicity of (4S)-2-(4-hydroxy-3-methoxyphenyl)thiazolidine-4-carboxylic acid in Zebrafish (Danio rerio)

Akbulut, Cansu; Burcu Ozturk; Genç Bilgiçli, Hayriye; Zengin, Mustafa; Yön Ertuğ, Nazan Deniz (INST TECNOLOGIA PARANA, 2017)

(4S)-2-(4-hydroxy-3-methoxyphenyl)thiazolidine-4-carboxylic acid is new synthesized substance obtained from cysteine and valine. Thiazolidine derivates have important biological responses so scientists work intensively on ...
Do the Height and Location of Black-crowned Night Heron (Nycticorax nycticorax) Nests Affect Egg Production and Breeding Success?

Uzun, Ali; Uzun, Abdullah (WATERBIRD SOC, 2009)

Changes in clutch size and fledging success associated with the height and distance from shore of nests were investigated in a colony of Black-crowned Night Heron at Poyrazlar Lake, Turkey. A total of 100 nests in five ...
EFFECT OF THE COLONY EDGE ON THE CLUTCH SIZE AND FLEDGING SUCCESS IN THE LITTLE EGRET EGRETTA GARZETTA (L.)

Uzun, Ali; Uzun, Abdullah (POLISH ACAD SCIENCES INST ECOLOGY, 2010)

The term 'edge effect' can be defined as an abrupt and local change in the abundance, diversity, composition etc. at the edge of any distinct, spatial patches (structure(s). It usually refers to forest/field, meadow/shrub ...