• Publications
  • Influence
Pesticide effects on freshwater zooplankton: an ecological perspective.
  • T. Hanazato
  • Biology, Medicine
  • Environmental pollution
  • 2001
The effects of pesticides on zooplankton are reviewed and their ecological significance is discussed. Toxicity is shown to vary depending on animal species, genotype, life stage, and size at birth.Expand
Nutrient dynamics and the eutrophication of shallow lakes Kasumigaura (Japan), Donghu (PR China), and Okeechobee (USA).
We compared the nutrient dynamics of three lakes that have been heavily influenced by point and non-point source pollution and other human activities. The lakes, located in Japan (Lake Kasumigaura),Expand
Behavioral responses of Daphnia pulex exposed to carbaryl and Chaoborus kairomone
An analysis of digitized three-dimensional video records of free-swimming Daphnia pulex identified six measurements of swimming behavior that can be used to quantify individual behavioral responsesExpand
Influence of time of application of an insecticide on recovery patterns of a zooplankton community in experimental ponds
A Zooplankton community was established in out-door concrete ponds to which an insecticide, carbaryl (0.5 mg/L final concentration), was applied at different times relative to the population trend.Expand
Cloning and analysis of a cDNA encoding a two-domain hemoglobin chain from the water flea Daphnia magna.
A cDNA encoding a two-domain hemoglobin (Hb) chain of Daphnia magna was cloned and its nucleotide (nt) sequence of 1261 bp was determined. The nt sequence contained 74 bp of the leader sequence, 1047Expand
Response of a zooplankton community to insecticide application in experimental ponds: a review and the implications of the effects of chemicals on the structure and functioning of freshwater
A review is presented of experimental studies in outdoor experimental ponds to investigate the effects of various insecticide exposures on natural zooplankton communities. Large zooplankton species,Expand
Synergistic effects of low oxygen concentration, predator kairomone, and a pesticide on the cladoceran Daphnia pulex
The cladoceran Daphnia pulex was exposed to low oxygen concentration, a kairomone from the predator Chaoborus, and the pesticide carbaryl; the combined effects of these factors on DaphniaExpand
Effects of repeated application of carbaryl on zooplankton communities in experimental ponds with or without the predator Chaoborus.
  • T. Hanazato
  • Biology, Medicine
  • Environmental pollution
  • 1991
Zooplankton communities with or without Chaoborus larvae were established in outdoor experimental ponds, to which the insecticide carbaryl was applied repeatedly at 10 or 100 microg litre(-1). In theExpand