Distribution of the exotic freshwater shrimp <i>Neocaridina</i> spp. in Miyagi Prefecture and influence on the habitat of native shrimp <i>Paratya compressa improvisa</i>

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  • 宮城県に侵入した淡水エビ：カワリヌマエビ属<i>Neocaridina</i> spp.の分布拡大とヌカエビ<i>Paratya compressa improvisa</i>への影響

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<p>Distribution of exotic freshwater shrimp Neocaridina spp. and native species Paratya compressa improvisa were investigated in rivers, drains, and ponds in northern Miyagi Prefecture. Neocaridina spp. and P. c. improvisa was distributed in 57.0% and 38.6% of sampling sites in rivers or drains, respectively, and then, the number of captured P. c. improvisa per sampling site was less than half of the number of Neocaridina spp.. In the investigation of the ponds, Neocaridina spp. and P. c. improvisa were distributed 11 and 36 sites, respectively. To evaluate competition between the two species, we analyzed distribution patterns of them using generalized linear mixed model. The models indicated that introduction of Neocaridina spp. is caused negative effects on P. c. improvisa in river and pond environment. These results suggest that expansion of Neocaridina spp. and reduction of P. c. improvisa will be going to continue in Miyagi Prefecture.</p>

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Details 詳細情報について

  • CRID
    1390001205823441664
  • NII Article ID
    130006200031
  • DOI
    10.20745/izu.9.0_47
  • ISSN
    24242101
    18819559
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
    • Crossref
  • Abstract License Flag
    Disallowed

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