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Title of Journal: Hydrobiologia

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Abbravation: Hydrobiologia

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Springer Netherlands

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DOI

10.1007/bf00786257

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ISSN

1573-5117

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Experimental isolation of positively and negativel

Authors: Henri J Dumont Yves Guisez Inez Carels Hans M Verheye
Publish Date: 1985/07/01
Volume: 126, Issue: 2, Pages: 121-127
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Abstract

We isolated and cloned strongly positively and strongly negatively phototactic individuals from a single natural population of Daphnia magna using an experimental column of 2 m high and an irradiance of 2000 W It is argued that the positively phototactic behaviour is genetic recessive that the individuals that showed the behaviour were heterozygous and thus the genetic system probably polygenic Populations should maintain such genotypes in heterozygous form and in low numbers in spite of selection against them because they are their guarantee against extinction should the pressure of natural selection ever become reversed

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  1. Using a phylogeographic approach to investigate the diversity and determine the distributional range of an isopod (Crustacea: Peracarida), Stenosoma nadejda (Rezig, 1989) in the Atlantic-Mediterranean region
  2. The effects of top-down and bottom-up controls on macroinvertebrate assemblages in headwater streams
  3. The influence of Ceratophyllum demersum L. and Stratiotes aloides L. on richness and diversity of aquatic vegetation in the lakes of mid-eastern Poland
  4. Phosphorus fractions and alkaline phosphatase activity in sediments of a large eutrophic Chinese lake (Lake Taihu)
  5. Interactions between nutrient availability and climatic fluctuations as determinants of the long-term phytoplankton community changes in Lake Garda, Northern Italy
  6. Importance of underwater light field in selecting phytoplankton morphology in a eutrophic reservoir
  7. Distribution and Abundance of Fauna on Living Tissues of Two Brazilian Hermatypic Corals ( Mussismilia hispida (Verril 1902) and Siderastrea stellata Verril, 1868)
  8. Dynamics of microbial planktonic food web components during a river flash flood in a Mediterranean coastal lagoon
  9. Chironomid species are sensitive to sugarcane cultivation
  10. Dormancy and dispersal as mediators of zooplankton population and community dynamics along a hydrological disturbance gradient in inland temporary pools
  11. Drift of stream invertebrates below a cave source
  12. Absence of negative allelopathic effects of cylindrospermopsin and microcystin-LR on selected marine and freshwater phytoplankton species
  13. Biogeochemical modelling of Ria Formosa (South Portugal)
  14. Global biodiversity of Scorpionflies and Hangingflies (Mecoptera) in freshwater
  15. Global biodiversity of Scorpionflies and Hangingflies (Mecoptera) in freshwater
  16. Characteristics of the pelagic phytoplankton in shallow oxbows
  17. Characterization of the waterbird communities wintering in Tunisian coastal lagoons
  18. Cultivating the climate: socio-economic prospects and consequences of climate-friendly peat land management in Germany
  19. Diurnal variation of phytoplankton in Loch Lomond
  20. Changes in microphytobenthos fluorescence over a tidal cycle: implications for sampling designs
  21. The fuzzy index of ecosystem integrity (FINE): a new index of environmental integrity for transitional ecosystems
  22. A fully implantable multi-channel biotelemetry system for measurement of blood flow and temperature: a first evaluation in the green sturgeon
  23. Are prokaryotic cell shape and size suitable to ecosystem characterization?
  24. Global diversity of hymenopterans (Hymenoptera; Insecta) in freshwater
  25. Natural and domestic introgressions in the marble trout population of Soča River (Slovenia)
  26. Phytoplankton composition and periodicity in a northeastern Quebec lake
  27. Distribution of freshwater diatom Didymosphenia geminata in streams in the Sierra Nevada, USA, in relation to water chemistry and bedrock geology
  28. Present state of the systematics of planktonic coccoid green algae of inland waters
  29. Alteration of essential fatty acids in secondary consumers across a gradient of cyanobacteria
  30. Short-term effects of nutrient enrichment on river biofilm: N–NO 3 − uptake rate and response of meiofauna
  31. The effect of environmental factors on circulation and respiration in teleost fish
  32. Dissolved oxygen concentration and diversity of benthic macroinvertebrates in an artificially destratified lake
  33. Chlorella thermophila (Trebouxiophyceae, Chlorophyta), a novel thermo-tolerant Chlorella species isolated from an occupied rooftop incubator
  34. Chlorella thermophila (Trebouxiophyceae, Chlorophyta), a novel thermo-tolerant Chlorella species isolated from an occupied rooftop incubator
  35. Surfacing activity and food utilisation in the obligatory air-breathing fish ophiocephalus striatus as a function of body weight
  36. Edge effect: a catalyst of spatial heterogeneity in natural biofilms
  37. The faunal role in the degradation of the common intertidal salt marsh plant Scirpus maritimus
  38. Length–mass relationships for lake macroinvertebrates corrected for back-transformation and preservation effects
  39. The taxonomic and ecological status of the environmentally restricted Spongillid species of North America. II. Anheteromeyenia biceps (Lindenschmidt, 1950)
  40. Moulting and colour changes in the Prawn, Caridina weberi
  41. Effects of freshwater input on nutrient loading, phytoplankton biomass, and cyanotoxin production in an oligohaline estuarine lake
  42. Proteomic and gene expression differences between post-diapause and subitaneous offspring phenotypes in the cyclic parthenogen Daphnia pulex
  43. Long term changes in the benthic communities of Loch Linnhe and Loch Eil (Scotland)
  44. The cyclopoid copepods of a wet campo marsh in central Brazil
  45. Propagule predation in a Neotropical mangrove: the role of the Grapsid crab Goniopsis cruentata
  46. Ecomorphological adaptation in three mudskippers (Teleostei: Gobioidei: Gobiidae) from the Persian Gulf and the Gulf of Oman
  47. Effects of thermal regime on mayfly assemblages in mountain streams
  48. Production and energy flow in the benthic community of a Texas pond
  49. Epiphytic protozoans on reed rootlets from Dutch waters
  50. Environmental filtering determines community patterns in temporary wetlands: a multi-taxon approach
  51. Ecological status assessment of European lakes: a comparison of metrics for phytoplankton, macrophytes, benthic invertebrates and fish
  52. Retention of radionuclides by some aquatic fresh water plants
  53. Contributions to the rotifer fauna of West Bengal. II genus Lepadella bory de St. Vincent, 1826
  54. Light-dependent fluorescence in the coral Galaxea fascicularis
  55. Die eintagsfliegen ( Ephemeropta ) in forellenbächen der beskiden. II. — Produktion
  56. High cryptic diversity and persistent lineage segregation in endemic Romecytheridea (Crustacea, Ostracoda) from the ancient Lake Tanganyika (East Africa)
  57. Assessing the sensitivity of alpine lakes and ponds to nitrogen deposition in the Canadian Rocky Mountains
  58. Nitrogen retention by peatland buffer areas at six forested catchments in southern and central Finland
  59. The effects of sewage-treatment-works effluent on epilithic bacterial and algal communities of three streams in northern england
  60. Diatom evidence for the timing and causes of eutrophication in Lake Victoria, East Africa
  61. Rapid estimation of potential yield for data-poor Tapes philippinarum fisheries in North Adriatic coastal lagoons
  62. Genetic population structure of the Fire-bellied toad Bombina bombina in an area of high population density: implications for conservation
  63. Lack of lake augmentation effects on aquatic macrophyte abundance and distribution in west-central Florida lakes, USA
  64. Comparative analysis of nuclear ribosomal DNA from the moon jelly Aurelia sp.1 (Cnidaria: Scyphozoa) with characterizations of the 18S, 28S genes, and the intergenic spacer (IGS)
  65. Seasonal dynamics of phytoplankton in the Gulf of Aqaba, Red Sea
  66. Contaminants in the Upper Mississippi River: historic trends, responses to regulatory controls, and emerging concerns
  67. Changes in fish species composition in Lake Naivasha, Kenya
  68. Effects of a rapidly increasing population of common carp on vegetative cover and waterfowl in a recently restored Midwestern shallow lake
  69. Food quantity shapes life history and survival strategies in Daphnia magna (Cladocera)
  70. Assessing recent climatic and human influences on chironomid communities from two moderately impacted lakes in western Ireland
  71. Macroinvertebrate cycles of decline and recovery in Swan Coastal Plain (Western Australia) wetlands affected by drought-induced acidification
  72. Discerning patterns of diversity from biogeographical distributions: testing models of metacommunity dynamics using non-marine ostracodes from San Salvador Island, Bahamas
  73. Preliminary observations on Gibbula umbilicalis (da Costa, 1778) on the Portuguese coast
  74. Global diversity of crabs (Crustacea: Decapoda: Brachyura) in freshwater
  75. Seasonal variation in primary productivity in three tropical ponds
  76. Phylogeny of the genus Hesperodiaptomus (Copepoda) based on nucleotide sequence data of the nuclear ribosomal gene
  77. Homogenization dynamics of the fish assemblages in Neotropical reservoirs: comparing the roles of introduced species and their vectors
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  79. Combining GIS and GAMs to identify potential habitats of squid Loligo vulgaris in the Northwestern Mediterranean
  80. Planktonic cnidarian distribution and feeding of Pelagia noctiluca in the NW Mediterranean Sea
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  90. Combination of multiple biological quality elements into waterbody assessment of surface waters
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  97. Biological barriers to restoration: testing the biotic resistance hypothesis in an upland stream recovering from acidification
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  101. Influence of aperiodic summer droughts on leaf litter breakdown and macroinvertebrate assemblages: testing the drying memory in a Central Apennines River (Aterno River, Italy)
  102. Measurement of rates of grazing of the ostracod Cyprinotus carolinensis on blue-green algae
  103. Waterbird response indicates floodplain wetland restoration
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  105. Population dynamics of Aurelia sp.1 ephyrae and medusae in Jiaozhou Bay, China
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  107. The delayed effects of meteorological changes on the water frogs in Central Italy
  108. Changes in fossil chironomid remains along a depth gradient: evidence for common faunal thresholds within lakes
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