Ofer Ovadia

Summary

Affiliation: Ben-Gurion University of the Negev
Country: Israel

Publications

  1. ncbi request reprint Weather variation and trophic interaction strength: sorting the signal from the noise
    Ofer Ovadia
    School of Forestry and Environmental Studies, Yale University, 370 Prospect Street, New Haven, CT, USA
    Oecologia 140:398-406. 2004
  2. doi request reprint The involvement of sand disturbance, cannibalism and intra-guild predation in competitive interactions among pit-building antlion larvae
    Erez D Barkae
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
    Zoology (Jena) 113:308-15. 2010
  3. doi request reprint A trade-off between growth and starvation endurance in a pit-building antlion
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
    Oecologia 160:453-60. 2009
  4. doi request reprint Phenotypic plasticity and variation in morphological and life-history traits of antlion adults across a climatic gradient
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, POB 653, Beer Sheva 84105, Israel
    Zoology (Jena) 112:139-50. 2009
  5. doi request reprint A morphological and life history comparison between desert populations of a sit-and-pursue antlion, in reference to a co-occurring pit-building antlion
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
    Naturwissenschaften 96:1147-56. 2009
  6. pmc Differences in mtDNA haplogroup distribution among 3 Jewish populations alter susceptibility to T2DM complications
    Jeanette Feder
    Department of Life Sciences and National Institute of Biotechnology in the Negev, Ben Gurion University of the Negev, Beer Sheva, Israel
    BMC Genomics 9:198. 2008
  7. ncbi request reprint Individual size variation and population stability in a seasonal environment: a discrete-time model and its calibration using grasshoppers
    Ido Filin
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
    Am Nat 170:719-33. 2007
  8. pmc The effects of nutrient dynamics on root patch choice
    Hagai Shemesh
    Life Sciences Department, Ben Gurion University of the Negev, Beer Sheva, Israel
    PLoS ONE 5:e10824. 2010
  9. pmc Conservation genetics of a rare Gerbil species: a comparison of the population genetic structures and demographic histories of the locally rare Pygmy Gerbil and the common Anderson's Gerbil
    Ron Rotkopf
    Department of Life Sciences, Ben Gurion University of the Negev, Be er Sheva 84105, Israel
    BMC Ecol 10:15. 2010
  10. ncbi request reprint Efficiency evaluation of two competing foraging modes under different conditions
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, 84105 Beer Sheva, Israel
    Am Nat 168:350-7. 2006

Collaborators

Detail Information

Publications16

  1. ncbi request reprint Weather variation and trophic interaction strength: sorting the signal from the noise
    Ofer Ovadia
    School of Forestry and Environmental Studies, Yale University, 370 Prospect Street, New Haven, CT, USA
    Oecologia 140:398-406. 2004
    ....
  2. doi request reprint The involvement of sand disturbance, cannibalism and intra-guild predation in competitive interactions among pit-building antlion larvae
    Erez D Barkae
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
    Zoology (Jena) 113:308-15. 2010
    ..Our study demonstrates that investigating the different components of complex biotic interactions can markedly improve our understanding of how these different factors interact to influence the behavior and life history of organisms...
  3. doi request reprint A trade-off between growth and starvation endurance in a pit-building antlion
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
    Oecologia 160:453-60. 2009
    ....
  4. doi request reprint Phenotypic plasticity and variation in morphological and life-history traits of antlion adults across a climatic gradient
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, POB 653, Beer Sheva 84105, Israel
    Zoology (Jena) 112:139-50. 2009
    ..Climate is a major factor affecting insect life span and body size. Since body size is strongly linked to fecundity and survival, climate thus has a twofold effect on fitness: directly, and indirectly through body size...
  5. doi request reprint A morphological and life history comparison between desert populations of a sit-and-pursue antlion, in reference to a co-occurring pit-building antlion
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
    Naturwissenschaften 96:1147-56. 2009
    ..fedtschenkoi with those observed in a co-occurring pit-building antlion indicated that there were neither shape differences that are independent of size nor was there a difference in the plasticity level between the two species...
  6. pmc Differences in mtDNA haplogroup distribution among 3 Jewish populations alter susceptibility to T2DM complications
    Jeanette Feder
    Department of Life Sciences and National Institute of Biotechnology in the Negev, Ben Gurion University of the Negev, Beer Sheva, Israel
    BMC Genomics 9:198. 2008
    ..Nevertheless these large-scale population screens often overlook the tremendous variation in the mitochondrial genome (mtDNA) and its involvement in complex disorders...
  7. ncbi request reprint Individual size variation and population stability in a seasonal environment: a discrete-time model and its calibration using grasshoppers
    Ido Filin
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
    Am Nat 170:719-33. 2007
    ..This occurs because the effect of size variation on net reproductive rate is dependent on season length. We discuss several limitations of the current model and outline possible routes for future model development...
  8. pmc The effects of nutrient dynamics on root patch choice
    Hagai Shemesh
    Life Sciences Department, Ben Gurion University of the Negev, Beer Sheva, Israel
    PLoS ONE 5:e10824. 2010
    ..This ability might enable plants to increase their performance by responding to both current and anticipated resource availabilities in their immediate proximity...
  9. pmc Conservation genetics of a rare Gerbil species: a comparison of the population genetic structures and demographic histories of the locally rare Pygmy Gerbil and the common Anderson's Gerbil
    Ron Rotkopf
    Department of Life Sciences, Ben Gurion University of the Negev, Be er Sheva 84105, Israel
    BMC Ecol 10:15. 2010
    ..We trapped gerbils in several locations in Israel's western and inner Negev sand dunes. We then extracted DNA from ear samples, and amplified two mitochondrial sequences: the control region (CR) and the cytochrome oxidase 2 gene (CO2)...
  10. ncbi request reprint Efficiency evaluation of two competing foraging modes under different conditions
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, 84105 Beer Sheva, Israel
    Am Nat 168:350-7. 2006
    ..Furthermore, we show that as long as the active predator cannot move faster than its prey, it has little or no advantage over the ambush predator. However, as the active predator's velocity increases, its advantage increases sharply...
  11. ncbi request reprint Inter-specific competitors reduce inter-gender competition in Negev Desert gerbils
    Ofer Ovadia
    Department of Life Sciences, Ben Gurion University of the Negev, POB 653, 84105 Beer Sheva, Israel
    Oecologia 142:480-8. 2005
    ..a. allenbyi. We suggest that both the reduction in intra-specific aggression and the positive effect on female survival can potentially stabilize competitive interactions and promote coexistence in this small mammal community...
  12. pmc Parental diabetes status reveals association of mitochondrial DNA haplogroup J1 with type 2 diabetes
    Jeanette Feder
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
    BMC Med Genet 10:60. 2009
    ..We hypothesized that association of mtDNA genetic variants with T2DM could be revealed while controlling for the effect of additional inherited factors, reflected in family history information...
  13. pmc Linking individuals with ecosystems: experimentally identifying the relevant organizational scale for predicting trophic abundances
    Ofer Ovadia
    Yale University, School of Forestry and Environmental Studies, 370 Prospect Street, New Haven, CT 06511, USA
    Proc Natl Acad Sci U S A 99:12927-31. 2002
    ..We thus conclude that in this ecosystem the foraging-predation risk tradeoff displayed by typical or average-sized herbivore is a sufficient amount of individual-level detail needed to explain ecosystem patterns...
  14. ncbi request reprint Mitochondrial DNA HV lineage increases the susceptibility to schizophrenia among Israeli Arabs
    Shirly Amar
    Stanley Research Center, Faculty of Health Sciences, Ben Gurion University of the Negev, Beersheva, Israel
    Schizophr Res 94:354-8. 2007
    ..However, mitochondrial DNA haplogroups are highly variable in human population and it will be necessary to replicate our results in other human ethnic groups...
  15. ncbi request reprint Ashkenazi Jewish mtDNA haplogroup distribution varies among distinct subpopulations: lessons of population substructure in a closed group
    Jeanette Feder
    Department of Life Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
    Eur J Hum Genet 15:498-500. 2007
    ..Our results underline the essentiality of adjusting data of population genetic variation for substructure during the design of association studies, even in apparently closed populations...
  16. doi request reprint Prey encounter rate by predators: discussing the realism of grid-based models and how to model the predator's foraging mode: a reply to Avgar et al
    Inon Scharf
    Department of Life Sciences, Ben Gurion University of the Negev, 84105 Beer Sheva, Israel
    Am Nat 172:596-8. 2008