Sex-linked variations in the sagittal otolith biometry of Nemipterus randalli (Russell, 1986) from the eastern Mediterranean Sea

Few studies have been conducted on the sagittal otolith shape and morphometry of Nemipterus randalli, and none of these studies has examined the effect of sexual dimorphism on the otolith morphology of this species, therefore this study aimed to contribute to knowledge about the otolith morphology of N. randalli, an invasive fish species for the Mediterranean Sea. For this purpose, a total of 132 samples (51 female and 81 male) were obtained from İskenderun Bay with the help of commercial fishermen in November 2018. Relationships between otolith measurements and fish size were determined. Shape indices and elliptic Fourier coefficients were calculated. Significant differences were detected between males and females in all analysis. The sexes were separated from each other using both shape indices and elliptic Fourier coefficients. However, shape analysis was more effective in distinguishing sexes than traditional morphometric analysis. Asymmetry in the otolith morphology of sexes has been attributed to differences in the growth and sexual maturity of male and female fish. The results of this study indicated that sexual dimorphism in Nemipterus randalli was also reflected in the otolith morphology. © 2022 Fisheries Society of the British Isles

The Length-Weight, Length-Length Relationship and Condition Factor of Angora Loach, Oxynoemacheilus angorae (Steindachner, 1897) Inhabiting Kılıçözü Stream in Kızılırmak River Basin (Central Anatolia- Turkey)

In this study, length-weight relationship (LWR), length- length relationship (LLR) and condition factor (K) of Angora loach, Oxynoemacheilus angorae were determined. A total of 103 specimens were sampled from Kılıçözü Stream in 2014. The length and weight of specimens were ranged 3.5-9.8 cm and 0.38-6.58 g, respectively. Lengthweight relationships for female, male and all samples were found as W= 0.01056.TL2.896 (r²= 0.923), W= 0.00963.TL2.940 (r²= 0.978) and W= 0.00987.TL2.929 (r²= 0.963), respectively. LWRs indicated an isometric growth in female, male and all samples. The values of Fulton's condition factor (K) ranged from 0.699 to 1.246 for females and from 0.654 to 1.072 for males. All length-length relationships were statistically significant.In this study, length-weight relationship (LWR), length- length relationship (LLR) and condition factor (K) of Angora loach, Oxynoemacheilus angorae were determined. A total of 103 specimens were sampled from Kılıçözü Stream in 2014. The length and weight of specimens were ranged 3.5-9.8 cm and 0.38-6.58 g, respectively. Lengthweight relationships for female, male and all samples were found as W= 0.01056.TL2.896 (r²= 0.923), W= 0.00963.TL2.940 (r²= 0.978) and W= 0.00987.TL2.929 (r²= 0.963), respectively. LWRs indicated an isometric growth in female, male and all samples. The values of Fulton's condition factor (K) ranged from 0.699 to 1.246 for females and from 0.654 to 1.072 for males. All length-length relationships were statistically significant

Precision of Age Estimates Obtained from Five Calcified Structure for Wels Catfish, Silurus glanis

In this study, vertebrae, otoliths (asteriscus and lapillus), sectioned lapillus and pectoral fin rays were evaluated for age determination of Silurus glanis L., 1758 inhabiting Siddikli Dam Lake. All calcified structures showed the variable annual ring formation. Ages obtained from calcified structures were compared using the percentage of agreement (PA), average percentage of error (APE), and coefficient of variation (CV). Sectioned lapillus showed the clearest annulus formation and highest PA (76.4%) between readings, followed by asteriscus (43.9%), whole lapillus (40.5%), vertebrae (36.0%) and pectoral fin ray (33.3%). When sectioned lapillus compared to other structures, there were high ages obtained from this structure. Especially, the ages from the whole lapillus were lower than sectioned lapillus. Also, ages obtained from pectoral fin ray were the closer to sectioned lapillus ages than the other calcified structures. Owing to the highest PA, lowest APE and CV, sectioned lapillus was recommended as the most reliable calcified structure for age determination of S. glanis. Our findings can be used for effective fisheries management and determination of the biological characteristics of wels catfish

STRUKTURA POPULACIJE I RAST CRVENPERKE, Scardinius erythrophthalmus (L., 1758), IZ EUTROFNOG JEZERA U JUŽNOJ ANATOLIJI

A total of 1329 samples were collected from monthly sampling between November 2009 and October 2010 in order to analyze growth features and population structure of rudd Scardinius erythrophthalmus living in Lake Ladik which has eutrophic character. The fork length (FL) ranged from 9.8 to 21.4 cm and the body weight (W) ranged from 13.62 to 200.68 g. Based on lapillus readings, the maximum age was 7 years. The overall ratio of female to male was 1:0.16. The von Bertalanffy growth equation parameters were calculated as L∞ = 39.32 cm, W∞ = 1504.92 g, k = 0.08, t0 = -1.08 for females, and L∞ = 28.19 cm, W∞ = 448.03 g, k = 0.13, t0 = -1.19 for males. Length-weight relationship for females and males was found as W = 0.0060 FL3.386 and W = 0.0078 FL3.282, respectively. The Fulton’s condition factor (K) showed an upward trend with reference to age and length groups in both sex. The value of mean K was computed as 1.737 for females, 1.667 for males and 1.727 for combined sexes. This study provides the initial data on population structure, growth features and condition of rudd in Lake Ladik. Obtained data have shown that population is comprised of young individuals and that the growth rate of the species is slow.Prikupljeno je ukupno 1329 uzoraka mjesečnim uzorkovanjem između studenog 2009. i listopada 2010. radi analize mogućnosti rasta i strukture populacije crvenperke, Scardinius erythrophthalmus, koja obitava u eutrofnom jezeru Ladik. Dužina do vilice (FL) kretala se u rasponu od 9,8 do 21,4 cm, a tjelesna težina (W) u rasponu 13,62-200,68 g. Na temelju čitanja otolita (lapillus), maksimalna dob iznosila je sedam godina. Ukupni omjer ženki i mužjaka je iznosio 1: 0,16. Von Bertalanffy-evi parametri rasta su izračunati kao L∞ = 39,32 cm, W∞ = 1504,92 g, k = 0,08, t0 = -1,08 za ženke i L∞ = 28,19 cm W∞ = 448,03 g, k = 0,13, t0 = -1,19 za mužjake. Dužinsko maseni odnos prikazan je jednadžbom W = 0,0060 FL3,386 za ženke i W = 0,0078 FL3,282za mužjake. Fultonovim kondicijskim faktorom (K) prikazan je uzlazni trend s obzirom na dob i duljinu skupina u oba spola. Srednja vrijednost K iznosila je 1,737 za ženke, 1,667 za mužjake i 1,727 za oba spola. Ova studija daje podatke o strukturi populacija, mogućnosti rasta i kondicije crvenperke iz jezera Ladik. Dobiveni podaci pokazali su da se populacije sastoje od mlađih individua, a stopa rasta vrste je spora

Strain relatedness in gram-negative bacteremia: Cause or contamination?

Aim: Bloodstream infections are a major cause of mortality, 25% of which are associated with gram-negative bacteremia. To avoid the inappropriate use of antibiotics, it is important to differentiate the bacteremia from contamination. In general, gram-positive bacteria were more likely to be contaminants than gram-negative-bacteria. There is little information in the literature concerning the epidemiology of gram-negative bacteria isolated from sequential blood cultures. Therefore, we aimed to examine the molecular epidemiology of gram-negative bacteria isolated from sequential blood cultures. Material and Methods: A total of 56 patients (112 samples and strains) with two or more sequential positive blood cultures for gram-negative bacteria with the same antibiogram were included in the study. Pulsed-field gel electrophoresis (PFGE) and arbitrarily primed PCR (AP-PCR) were performed for the determination of strain relatedness. Results: While PFGE analysis demonstrated relatedness in 6 isolates, AP-PCR demonstrated 9 relatedness in 112 isolates. Discussion: The results of our study suggest that, although the possibility of contamination is very low in gram-negative bacteremia, this can still take place, as shown in sequential blood cultures with the same antibiogra

Evaluation of the relation of Platelet Volume Index, MPV and RDW values with mortality in spontaneous intraparenchymal hemorrhages

Introduction: Intracerebral Spontaneous Hemorrhage (ISH) is a sudden hemorrhage into the brain parenchyma as a result of a rupture of the cerebral vessels that are not related to traumas. The purpose of the present study was to evaluate the relation of mortality with Platelet Volume Index (PVI) scoring systems, which have been reported in a small number of studies in terms of blood RDW, MPV, platelet and intracranial hemorrhages in patients diagnosed with intraparenchymal hemorrhage in Emergency Departments. Methods: This study was performed retrospectively by examining patient files of patients who came to Emergency Medicine Clinic between 01.01.2019-31.12.2019. As a control group for comparison of blood parameters, blood parameters of 72 patients suitable for the same age population, without intraparenchymal haemorrhage.Results: A total of 54.10% (n=85) intraparenchymal bleeding patients (IPC) and 45.90% (n=72) healthy control groups (HCG) were included in the study. There was no statistically significant difference between the clinical results of IPC groups in terms of mortality of RDW parameter and MPV parameter (p=0.930; p=0.118). When PVI ratio was evaluated in IPC group and HCG; the mean PVI (MPV/Platelet ratio) in the IPC group was 4.37±1.66, and the PVI (MPV/Platelet ratio) in the HCG was 3.89±1.02.A statistically significant difference was found between the PVI in the patient group and the HCG.A statistically significant difference was found between the PVI ratio clinical results of the patients with IPC (p=0.043).Conclusion: Spontaneous Intraparenchymal hemorrhage are among the leading causes of stroke-induced mortality and disability. The Hemphill Score and hemorrhage volume are important factors in mortality evaluation in intraparenchymal hemorrhage. There are not many studied conducted on Platelet Volume Index, and it is an important marker in predicting mortality, especially in these patients

Die klassifizierung der Romischen grabtypen in den nekropolen von Ephesos

Ephesos antik kenti Arkaik Dönem'den Geç Antik Döneme kadar olan süreçte denize kıyısı olan bir liman şehri konumu ile ticari, kültürel ve sosyal yönden öncelikli bir yere sahip olmuştur. Ephesos kentinin mimari, sosyal ve sanatsal anlamda gösterdiği gelişmeler bugün kazılar ışığında değerlendirilmektedir. Ephesos antik kentinin sosyal ve kültürel yaşamın izlerine kentin nekropol alanlarında yapılan arkeolojik kazılar ve yüzey araştırmaları sonucunda elde edilen bilgiler ışık tutmaktadır. Böylece bölgenin sosyal yapısının yanı sıra dinsel inanç sisteminde çözümlenmesinde oldukça yardımcı alanlar haline gelmektedir. Ephesos antik kenti nekropol alanlarındaki ölü gömme adetleri ve mezar tipolojisinin yapılması gerekliliğinden yola çıkarak tezimizde Roma Dönemi'nde Ephesos nekropol alanlarının belirlenip ve bu alanlarda görülen mezar tipleri ele alınmıştır. Dönem sınırlamasının nedeni de elde edilen verilerin çoğunun Roma İmparatorluk Dönemi'ne ait olması ve benzer birçok kentteki bu döneme ait mezar tiplerinin ayırt edilebilmesidir. Çalışmada Ephesos Nekropolleri'ndeki Roma İmparatorluk Dönemi mezar tipolojisinin yapılabilmesi için önce nekropol alanlarının yerlerinin belirlenmeye çalışılmış ve bu alanlarda yapılmış çalışmaların sonuçları incelenmiştir. Tespit edilen mezar tiplerinden yola çıkarak mezar tipolojileri belirlenerek başlıklar altında toplanmış ve daha sonra Ephesos Nekropol alanlarındaki Roma İmparatorluk Dönemi içerisinde nasıl bir tipolojik dağılım ve gelişim gösterdiği saptanmıştır. Bu çalışmalar sırasında kentin nekropol alanlarındaki yapılan araştırmalar ışığında belirlenen malzemeler ile ayrıntılı ya da genel içerikli tüm yayınlar taranarak kapsamlı bir literatür çalışması yapılmıştır.Als eine Küsten- und Hafenstadt ist das Wachstum von Ephesos durch ihre regionale und überregionale Handelsbeziehungen, die von der archaischen Epoche bis zur Spätantike reichen, bereits bekannt. Die städtische Entwicklung allseits in Ephesos wird archäologisch geforscht. Die Kentnisse über die Stadtentwicklung werden auch durch die Ausgrabungen sowie Surveys gewonnen, die in Nekropolen durchgeführt werden. Diese Untersuchungen in den Nekropolen helfen auch zur Beleuchtung der sozialen Struktur und Religion der antiken Stadt, Ephesos. Eine Untersuchung der Grabsitten und Typologie der Gräber von Ephesos in der römischen Kaiserzeit bietet eine Notwendigkeit. Daher besteht das Ziel dieser Arbeit darin die Definition der römischen Nekropole und deren Grabtypen zu bestimmen. Meine Arbeit fasst zeitlich die römischen Kaiserzeit um, da die Informationen überwiegend aus den römischen Gräbern zu gewinnen sind und viele Städte darüber eine gute Vergleichsmöglichkeit anbieten. Für eine Definition der römischen Grabtypen sollte zuerst die Nekropolenbereiche festgestellt und die Ergebnisse früherer Forschungen durchgearbeitet werden. Danach wurden die Grabbauten klassifiziert, die sich auf verschiedenen Grabtypen basieren. Schließlich wurde die Verteilung und die Entwicklung der Grabtypen während der römischen Kaiserzeit festgestellt. Dabei wurde alle diesbezügliche Literatur recherchiert und das Fundmaterial aus den Veröffentlichungen, die sich auf ältere Forschungen basieren, wurde ausgewertet

The Length-Weight, Length-Length Relationship and Condition Factor of Angora Loach, Oxynoemacheilus angorae (Steindachner, 1897) Inhabiting Kılıçözü Stream in Kızılırmak River Basin (Central Anatolia-Turkey)

In this study, length-weight relationship (LWR), length- length relationship (LLR) and condition factor (K) of Angora loach, Oxynoemacheilus angorae were determined. A total of 103 specimens were sampled from Kılıçözü Stream in 2014. The length and weight of specimens were ranged 3.5-9.8 cm and 0.38-6.58 g, respectively. Length-weight relationships for female, male and all samples were found as W= 0.01056.TL2.896 (r²= 0.923), W= 0.00963.TL2.940 (r²= 0.978) and W= 0.00987.TL2.929 (r²= 0.963), respectively. LWRs indicated an isometric growth in female, male and all samples. The values of Fulton’s condition factor (K) ranged from 0.699 to 1.246 for females and from 0.654 to 1.072 for males. All length-length relationships were statistically significant