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151.
Zeynep Pekcan‐Hekim Noora Hellén Laura Härkönen Per Anders Nilsson Leena Nurminen Jukka Horppila 《Ecology and evolution》2016,6(24):8919-8930
The coexistence of competing species relies on niche partitioning. Competitive exclusion is likely inevitable at high niche overlap, but such divide between competitors may be bridged if environmental circumstances displace competitor niches to enhance partitioning. Foraging‐niche dimension can be influenced by environmental characteristics, and if competitors react differently to such conditions, coexistence can be facilitated. We here experimentally approach the partitioning effects of environmental conditions by evaluating the influence of water turbulence on foraging‐niche responses in two competing fish species, Eurasian perch Perca fluviatilis and roach Rutilus rutilus, selecting from planktonic and benthic prey. In the absence of turbulence, both fish species showed high selectivity for benthic chironomid larvae. R. rutilus fed almost exclusively on zoobenthos, whereas P. fluviatilis complemented the benthic diet with zooplankton (mainly copepods). In turbulent water, on the other hand, the foraging‐niche widths of both R. rutilus and P. fluviatilis increased, while their diet overlap simultaneously decreased, caused by 20% of the R. rutilus individuals turning to planktonic (mainly bosminids) prey, and by P. fluviatilis increasing foraging on littoral/benthic food sources. We show that moderate physical disturbance of environments, such as turbulence, can enhance niche partitioning and thereby coexistence of competing foragers. Turbulence affects prey but not fish swimming capacities, with consequences for prey‐specific distributions and encounter rates with fish of different foraging strategies (pause‐travel P. fluviatilis and cruise R. rutilus). Water turbulence and prey community structure should hereby affect competitive interaction strengths among fish species, with consequences for coexistence probability as well as community and system compositions. 相似文献
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Janson J. White Juliana F. Mazzeu Zeynep Coban-Akdemir Yavuz Bayram Vahid Bahrambeigi Alexander Hoischen Bregje W.M. van Bon Alper Gezdirici Elif Yilmaz Gulec Francis Ramond Renaud Touraine Julien Thevenon Marwan Shinawi Erin Beaver Jennifer Heeley Julie Hoover-Fong Ceren D. Durmaz Halil Gurhan Karabulut Claudia M.B. Carvalho 《American journal of human genetics》2018,102(1):27-43
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M. Cecilia Poli Frédéric Ebstein Sarah K. Nicholas Marietta M. de Guzman Lisa R. Forbes Ivan K. Chinn Emily M. Mace Tiphanie P. Vogel Alexandre F. Carisey Felipe Benavides Zeynep H. Coban-Akdemir Richard A. Gibbs Shalini N. Jhangiani Donna M. Muzny Claudia M.B. Carvalho Deborah A. Schady Mahim Jain Jill A. Rosenfeld Jordan S. Orange 《American journal of human genetics》2018,102(6):1126-1142
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Donus Gencer Zeynep Bayramoglu Remziye Nalcacioglu Regina G. Kleespies Zihni Demirbag 《Biocontrol Science and Technology》2018,28(2):107-121
In this study, Lymantria dispar dispar larvae, collected from three different localities in Turkey, were examined for the presence of inclusion bodies under phase contrast and electron microscopes. Inclusion bodies from infected larvae were subjected to polymerase chain reaction using the conserved primers for polyhedrin (polh), late expression factor 8 (lef-8) and late expression factor 9 (lef-9) genes. Sequence analysis confirmed that larvae collected from the three different localities contained multiple nucleopolyhedrosis viruses (MNPVs). These isolates were designated LdMNPV-T1, LdMNPV-T2 and LdMNPV-T3. Phylogenetic analyses of these isolates were performed using target genes polh, lef-8 and lef-9. Restriction endonuclease analysis of the three geographic isolates with EcoRI and PstI enzymes demonstrated some differences existed among the isolates. According to the EcoRI profile, the mean estimated size for the complete genome of each isolate (LdMNPV-T1, LdMNPV-T2 and LdMNPV-T3) was calculated to be approximately 170, 153 and 170?kb, respectively. Insecticidal activities of each isolate were tested on L. d. dispar larvae using four different viral concentrations between 103 and 106?OBs/ml. Results showed that the mortalities for LdMNPV-T1, -T2 and -T3 ranged between 13–53%, 47–100% and 46–93%, respectively. The LC50 and LC95 values of LdMNPV-T2 were not significantly different from the respective corresponding values of the other two isolates. However, isolate LdMNPV-T2 killed larvae with a LC50 value that was lower than the other two isolates. Our results suggested there are promising LdMNPV isolates in Turkey that can be used for microbial control of L. d. dispar larvae. 相似文献
155.
Acar Tayfun Pelit Arayıcı Pelin Ucar Burcu Karahan Mesut Mustafaeva Zeynep 《International journal of peptide research and therapeutics》2019,25(3):911-918
International Journal of Peptide Research and Therapeutics - Brucellosis is primarily a zoonotic disease caused by members of the Brucella genus which consists of 11 recognized species based on... 相似文献
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Meral Tunçbilek Zeynep Ateş-Alagöz Nurten Altanlar Arzu Karayel Süheyla Özbey 《Bioorganic & medicinal chemistry》2009,17(4):1693-1700
A series of 8,9-disubstituted adenines (4, 5, 8), 6-substituted aminopurines (10–13) and 9-(p-fluorobenzyl/cyclopentyl)-6-substituted aminopurines (16, 17, 19–30) have been prepared and the antimicrobial activities of these compounds against Staphylococcus aureus, methicillin-resistant S. aureus (MRSA, standard and clinical isolate), Bacillus subtilis, Escherichia coli and Candida albicans were evaluated. 6-[(N-phenylaminoethyl)amino]-9H-purine (12) which has no substitution at N-9 position and 9-cyclopentyl-6-[(4-fluorobenzyl)amino]-9H-purine (24) exhibited excellent activity against C. albicans with MIC 3.12 μg/mL. These compounds displayed better antifungal activity than that of standard oxiconazole. Furthermore, compound 22 carrying 4-chlorobenzylamino group at the 6-position of the purine moiety exhibited comparable antibacterial activity with that of the standard ciprofloxacin against both of the drug-resistant bacteria (MRSA, standard and clinical isolate). 相似文献