Goodbye Hartmann trial: a prospective, international, multicenter, observational study on the current use of a surgical procedure developed a century ago

Background: Literature suggests colonic resection and primary anastomosis (RPA) instead of Hartmann's procedure (HP) for the treatment of left-sided colonic emergencies. We aim to evaluate the surgical options globally used to treat patients with acute left-sided colonic emergencies and the factors that leading to the choice of treatment, comparing HP and RPA. Methods: This is a prospective, international, multicenter, observational study registered on ClinicalTrials.gov. A total 1215 patients with left-sided colonic emergencies who required surgery were included from 204 centers during the period of March 1, 2020, to May 31, 2020. with a 1-year follow-up. Results: 564 patients (43.1%) were females. The mean age was 65.9 ± 15.6 years. HP was performed in 697 (57.3%) patients and RPA in 384 (31.6%) cases. Complicated acute diverticulitis was the most common cause of left-sided colonic emergencies (40.2%), followed by colorectal malignancy (36.6%). Severe complications (Clavien-Dindo ≥ 3b) were higher in the HP group (P < 0.001). 30-day mortality was higher in HP patients (13.7%), especially in case of bowel perforation and diffused peritonitis. 1-year follow-up showed no differences on ostomy reversal rate between HP and RPA. (P = 0.127). A backward likelihood logistic regression model showed that RPA was preferred in younger patients, having low ASA score (≤ 3), in case of large bowel obstruction, absence of colonic ischemia, longer time from admission to surgery, operating early at the day working hours, by a surgeon who performed more than 50 colorectal resections. Conclusions: After 100 years since the first Hartmann's procedure, HP remains the most common treatment for left-sided colorectal emergencies. Treatment's choice depends on patient characteristics, the time of surgery and the experience of the surgeon. RPA should be considered as the gold standard for surgery, with HP being an exception

A new record for the freshwater ostracod fauna of turkey: hungarocypris madaraszi (Örley, 1886) (crustacea: ostracoda)

A bisexual population of Hungarocypris madaraszi (Örley, 1886) was found in a dead arm of the Küçük Menderes River near Torbalı (İzmir). The species is a new record for the freshwater ostracod fauna of Turkey. © 2002 Taylor & Francis Group, LLC

The first record of the brown hydra, hydra oligactis (cnidaria) in turkey

[No abstract available

Growth features of an endemic population of Chondrostoma holmwoodii (Actinopterygii: Cypriniformes: Cyprinidae) in western Anatolia

Background. The Izmir nase, Chondrostoma holmwoodii (Boulenger, 1896), an endemic species for the inland waters of Turkey, is in the category of DD “Data Deficient” in the list of IUCN Red Data Book. There are insufficient data on the biological characteristics of the species in the literature. The aim of this study was to obtain the growth characteristics of Izmir nase population from Western Anatolia and compare them with the previous data reported in literature. Materials and methods. Biological features of Izmir nase were examined based on a total of 1208 specimens collected from Tahtali Dam Lake during the period May 2006–April 2007. Age of fish was determined by reading scales. Length–weight relation and the von Bertalanffy equationwere used to evaluate the fish growth. Results. Scales reading indicated the presence of 5 age classes. The computed growth parameters were: L∞ = 29.19 cm, k = 0.177· year–1 and t0 = –3.258 year–1 for both sexes. The length-weight relations were estimated as W = 0.019L2.97, W = 0.012L3.11 and W = 0.011L3.13 for females, males, and both sexes combined, respectively. Conclusion. The Izmir nase from Tahtali Dam Lake was characterized by linear growth and it was observed that the fish grew faster during the first two years. Many endemic fish species in inland waters of Turkey are under the threat of extinction due to human activities (pollution, drought, dam construction, habitat degradation, and overfishing) but the species is not threatened by these factors in the study area

Contribution to knowledge of the variation and ecology of echinogammarus antalyae karaman, 1971 (crustacea: amphipoda)

[No abstract available

Growth features of an endemic population of Chondrostoma holmwoodii (Actinopterygii: Cypriniformes: Cyprinidae) in western Anatolia

Background. The Izmir nase, Chondrostoma holmwoodii (Boulenger, 1896), an endemic species for the inland waters of Turkey, is in the category of DD “Data Deficient” in the list of IUCN Red Data Book. There are insufficient data on the biological characteristics of the species in the literature. The aim of this study was to obtain the growth characteristics of Izmir nase population from Western Anatolia and compare them with the previous data reported in literature. Materials and methods. Biological features of Izmir nase were examined based on a total of 1208 specimens collected from Tahtali Dam Lake during the period May 2006–April 2007. Age of fish was determined by reading scales. Length–weight relation and the von Bertalanffy equationwere used to evaluate the fish growth. Results. Scales reading indicated the presence of 5 age classes. The computed growth parameters were: L∞ = 29.19 cm, k = 0.177· year–1 and t0 = –3.258 year–1 for both sexes. The length-weight relations were estimated as W = 0.019L2.97, W = 0.012L3.11 and W = 0.011L3.13 for females, males, and both sexes combined, respectively. Conclusion. The Izmir nase from Tahtali Dam Lake was characterized by linear growth and it was observed that the fish grew faster during the first two years. Many endemic fish species in inland waters of Turkey are under the threat of extinction due to human activities (pollution, drought, dam construction, habitat degradation, and overfishing) but the species is not threatened by these factors in the study area

An amphipod species new for the turkish fauna: Pontogammarus aestuarius (Derzhavin, 1924)

Pontogammarus aestuarius (Derzhavin, 1924), a Ponto-Caspian amphipod species, was found in 2002 in Taşkısığı Lake, situated on the NW coast of Anatolia. Its morphological characteristics are described and the extremities of the male illustrated. Ecological notes on the habitat of the species are given. © 2004 Taylor & Francis Group, LLC

Clonal selection in ‘Tombul’ hazelnut: Preliminary results

There are 18 registered hazelnut cultivars grown in Turkey. Among these, ‘Tombul’ has the highest quality. Some morphological variations have been observed among ‘Tombul’ plants, ocaks and orchards. A research project was carried out between 2007 and 2012 to identify superior ‘Tombul’ clones in Giresun and Trabzon provinces where this cultivar is widespread and the ecological conditions are ideal for hazelnut. A total of 380 ‘Tombul’ plants were evaluated for three years, and 29 of them were selected based on yield and quality. Before proceeding with replicated trials the identity of these selections was verified. Molecular analysis using AFLP and SSR markers showed that 14 selections were found to be genetically different (clones) from the standard ‘Tombul’. These clones were propagated in 2013 and a replicated trial was established in 2014. Phenological observations and pomological analyses were made in 2015 and 2016. The cumulative yield was 82.2 g plant -1 in standard ‘Tombul’ while higher cumulative yields were recorded in selections of 61Ç17 (181.2 g), 28G13 (134.8 g), 28P01 (118.3 g), 28M15 (108.1 g), 61V25 (107.3 g) and 28K16 (86.7g). Differences were also noted in nut and kernel sizes (15.4-16.8 and 11.8-14.1 mm, respectively) and weights (1.65-1.95 and 0.89-1.07 g, respectively), shell thickness (0.91-1.02 mm), percent kernel (50.8-55.7%), internal cavity diameter (1.62-2.35 mm), ratio of good kernels (82.5-100%), and in plant characteristics such as plant height (165-211 cm), stem diameter (31.7-38.6 mm) and number of suckers (17.9 to 29.2). Evaluation of the selections will continue for several more years. © 2018 International Society for Horticultural Science. All Rights Reserved.Direction Générale de l’Armement: TAGEM/BBAD/13/A10/P03/01The study was supported by General Directorate of Agricultural Research and Policies with the project numbered TAGEM/BBAD/13/A10/P03/01