The distributions and activities of nitric oxide (NO) and hydrogen sulfide (H2S) synthesis enzymes in the brain of the mitten crab Eriocheir japonica (Decapoda: Varunidae) from fresh and salt water were studied using histochemical and immunocytochemical methods. In crabs that live in fresh water, the share of NO- and CBS-containing nerve elements in certain brain structures was increased, indicating the joint participation of NO and H2S in the central regulation of adaptive mechanisms during the formation of a compensatory response to changing environmental conditions. It is assumed that preservation of the balance between nitric oxide and hydrogen sulfide in the brain of E. japonica plays an important role in the adaptation of this species to changes in the chemical composition of the environment.
Russian Journal of Marine Biology – Springer Journals
Published: Jul 4, 2012
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