Some deep-sea decapod crustaceans from the international waters of Mersin Bay(North Levant Basin, Turkey)
AYAS, Deniz | Çiftçi, Nuray
The deep-see decapod crustacean species sampled from trawling operations carried out in the open waters of Mersin Bay (Coordinates: 36.24853N-34.36491E, 36.18839N-43.38847E, 36.17065N-34.40686E, and 36.07227N34.53326E) in May 2018 were identified. Samples were preserved in ethyl alcohol and were deposited in the Museum of the Systematic, Faculty of Fisheries, Mersin University, (catalogue number: MEUDC-17-11-001, MEUDC-18-12- 010-014). In total 13 trawling operations, 6 deep-sea decapod crustacean species were caught. Plesionika edwardsii belonging to family of Pandalidae, Polycheles typhlops belonging to Polychelidae family, Geryon longipes from Geryonidae family, Medorippe lanata from Dorippidae family, Pasiphaea sivado from Pasiphaeidae family and Parapenaeus longirostris from Pen...
Turunç (Citrus aurantium, L.) yaprak ve meyve kabuğu uçucu yağlarının kimyasal bileşenleri, antioksidan ve antibakteriyel etkinlikleri
ÖZER, Selmin, ÇINAR, Fırat
Bu araştırma turunç (Citrus aurantium) meyve kabuğu ve yaprak uçucu yağlarının biyo-yararlılığnın belirlenmesi amacıyla yürütülmüştür. Bu amaçlarla Şubat-Nisan 2020’de turunç ağaçlarının meyveleri ve yaprakları toplanarak hidrodistilasyon yöntemiyle uçucu yağları elde edilmiştir. Uçucu yağların bileşenleri GC-MS (Gaz kromatografisikütle spektrometresi) ve antioksidan aktiviteleri DPPH (2,2-difenil-2-pikrilhidrazil) metotlarına göre yapılmıştır. Antimikrobiyal duyarlılıkları ise antibiyogram (disk difüzyon yöntemi), minimum inhibisyon konsantrasyonu (MİK) (mikrodilüsyon yöntemi) ve minimum bakterisidal konsantrasyonu (MBK) testleri uygulanarak saptanmıştır. Antibakteriyel aktivite testleri iki Gram-negatif basil (Escherichia coli ve Yersinia ruckeri) ve Gram-pozitif kok (Enterococcus fa...
New locality record for Fistularia petimba Lacepède, 1803 from the NortheasternMediterranean Sea (Mersin Bay)
Çiftçi, Nuray | Ayas, Deniz
Fistularia petimba distributes in tropical and subtropical waters of Atlantic and Indo-Pacific. In this research, two individuals belonging to F. petimba were caught in a trawl operation carried out in Mersin Bay in May 2018. Necessary morphometric measurements were taken to prevent misconceptions in the identification of the species and it was determined that morphometric measurements in the captured individuals were consistent with the measurements of the specimens in the previous studies. It is believed that F. petimba entered the Northeastern Mediterranean Sea from the Red Sea. This species is posing a threat to the Mediterranean ecosystem as a predator and its invasion capacity is discussed
Yabancı Tür Trachemys scripta elegans (Wied-Neuwied, 1839)’ın Mersin-Anamur Tatlısu Sistemlerinde Dağılım Durumu ile Morfometrik Özelliklerinin Belirlenmesi.
Eldeleklioğlu, Mehmet Ali | Çiftçi, Nuray | Ayas, Deniz
Araştırmada yabancı bir tür olan Trachemys scripta elegans (Wied-Neuwied, 1839)’ın Mersin-Anamur Tatlısu sistemlerinde dağılım durumu ile örneklenen bireylerin morfometrik ölçümlerin belirlenmesi amaçlanmıştır. Türün Mamure Kalesi ve Alyanak Sulak alanında dağılımı yumurtlama öncesi ve yumurtlama sonrası dönemde izlenmiştir. Her iki örnekleme döneminde toplam 40 adet birey sadece Mamure Kalesi’nden örneklenebilmiştir. Alyanak sulak alanında ise sadece yumurtlama öncesi dönemde 6 adet birey gözlenmiş, sulak alanın büyüklüğü, suyun derinliği ve bulanıklık durumu, bireylerin saklanmasına olanak veren vejetasyonun yoğunluğu, bireylerin hızı, ekibin su kaplumbağası yakalama deneyimi gibi sebeplerle ile herhangi bir birey alandan örneklenememiştir. Çalışmada T. scripta elegans bireylerini...
POLYCYCLIC AROMATIC HYDROCARBONS IN SEAFOOD FROM THE MEDITERRANEAN SEA.
Çiftçi, Nuray | AYAS, Deniz
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds that are formed as a result of insufficientcombustion of organic compounds and cause pollution in the environment. While its natural resources arevolcanicactivities, forest fires, organic matter decomposition, its anthropogenic resources are fossil fuels andpetroleumderivatives. Aquatic ecosystems constitute the final discharge points of PAHs that mix with the atmosphereandsoil.The transmission of PAHs accumulated in aquatic organisms to the upper trophic zones through the foodchainistransmitted to humans by the consumption of seafood. It is known that there are more than a hundredPAHcompounds in the environment, but 16 of them are considered as priority pollutants due to their carcinogeniceffects.The Mediterranean is highly vul...
New record of Blackmouth catshark, Galeus melastomus Rafinesque, 1810(Carcharhiniformes, Scyliorhinidae) from the International Waters of the Mersin Bay,Turkey
Çiftçi, Nuray | AYAS, Deniz
An immature specimen of the blackmouth catshark, Galeus melastomus Rafinesque, 1810, was caught by a bottom trawl in the international waters of the Mersin Bay in May 2018. This species was recorded earlier from Israel Open Waters, and Marmara, Aegean and Mediterranean Sea. This is the third record for the southern coast of Turkey and the first record for Mersin Bay
Biometric Features of marbled spinefoot Siganus rivulatus (Forsskål & Niebuhr, 1775) from Mersin Bay (Northeastern Mediterranean), Turkey.
Çiftçi, Nuray | Ayas, Deniz
In the study, it was aimed to determine the morphometric measurements of Siganus rivulatus (Forsskål & Niebuhr, 1775) sampled from Mersin Bay in February 2021. The average value of some morphometric measurements of fish from Mersin Bay (n=196) were found that the total length 17.87 ± 3.11 cm, standard length 13.88 ± 1.96 cm, fork length 17.06 ± 1.35 cm, head length 3.60 ± 0.76 cm, eye diameter 1.08 ± 0.23 cm, interorbital distance 1.60 ± 0.34 cm, body width 2.32 ± 0.48 cm, dorsal fin base length 10.45 ± 2.19 cm, anal fin base length 6.26 ± 1.31 cm, pectoral fin length 2.56 ± 0.53 cm and caudal peduncle height 0.78 ± 0.16 cm. The total length-weight relationship of the species was determined as W = 0.008xTL3.16 (r2=0.973) and it was found that the fish showed positive allometric grow...