研究のタイプ: 医学/生物学の研究 (experimental study)

[カエル(Rana temporaria)のオタマジャクシに対する携帯電話基地局アンテナの影響:都市が実験室になっている] med./bio.

Mobile phone mast effects on common frog (Rana temporaria) tadpoles: the city turned into a laboratory.

掲載誌: Electromagn Biol Med 2010; 29 (1-2): 31-35

この研究は、携帯電話基地局から約140m離れた位置にある市中の建物の4階のテラスに水槽を置き、この水槽内に入れたごく一般的なカエル(Rana temporaria)をばく露群(n=70)とし、室内のファラデーケージ内に置いた水槽のカエルを対照群(n=70)として、両群を卵からオタマジャクシになるまで2ヵ月間観察して比較した。その結果、対照群での発達が正常であったのに比べ、ばく露群では種々の発生異常が観察されたことを報告している。

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研究目的(著者による)

To study the possible effects of mobile phone base station irradiation on tadpoles.

詳細情報

The experiment was performed in Valladolid (Spain). The tadpoles were placed in two tanks with oxygen and food every day, which were set out on the fifth floor terrace at a distance of 140 meters from several base stations. Two groups were used (exposure and control group, each group n= 70). The experiment lasted two months, from the egg phase until an advanced phase of tadpole prior to metamorphosis.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 648–2,155 MHz
ばく露時間: continuous for 2 months (from the egg phase until prior to metamorphosis)

ばく露1

主たる特性
周波数 648–2,155 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 2 months (from the egg phase until prior to metamorphosis)
Additional information fields of several mobile phone services (GSM, DCS, UMTS)
ばく露装置
ばく露の発生源/構造
  • several mobile phone base station antennas (UMTS, GSM, DCS)
Distance between exposed object and exposure source 140 m
ばく露装置の詳細 base stations antennas on roof of an eight story building; exposed frogs kept in tanks opposite of the base station antennas on a fifth floor terrace; sham exposure group placed inside a Faraday cage
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
電界強度 1.8 V/m minimum 測定値 - -
電界強度 3.5 V/m maximum 測定値 - -

ばく露を受けた生物:

方法 影響評価項目/測定パラメータ/方法

研究対象とした生物試料:
調査の時期:
  • ばく露中
  • ばく露後

研究の主なアウトカム(著者による)

The data showed in the exposed group low coordination of movements, an asynchronous growth (resulting in both big and small tadpoles) and a high mortality (90%). In the control group under the same conditions but inside a Faraday cage, the coordination of movements was normal, the development was synchronous, and the mortality rate was 4.2%.
These findings indicate that exposure to mobile phone base stations in a real situation may affect the development and may cause an increase in mortality of exposed tadpoles.

研究の種別:

研究助成

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