In the present paper, the genus Apotrechus Brunner-Wattenwyl, 1888 is revised. Two new species from China are described and illustrated: Apotrechusquadratus sp. n. and Apotrechustruncatolobus sp. n.. A new key and the distributional data are given.

The work highlights a number of gaps in the biography F.F. Ergardt. At same time emphasis is on researching his academic career. Four stages service Ergardt at Kiev University St. Vladimir are highlighted. 1) In 1853-1857 he worked Department Anatomy. 2) 1857-1871. During these years headed State Medical Science. 1871 Departments Hygiene, Police, Geography and Statistics emerged from this Depar...

Brachidiniacean dinoflagellates have been investigated in the open waters of the Mediterranean Sea, along a transect from the south of France to the south of Cyprus (20 June–18 July 2008). Brachidinium and Karenia papilionacea often co-occurred, B. capitatum predominating in the surface waters. The highest abundance of Brachidinium were found in the upper 25m in the westernMediterranean with a ...

This study assessed the possible combined effects of harmful algae and parasite infection on hemocyte and hemolymph parameters of a bivalve mollusc. Manila clams Ruditapes philippinarum, were exposed for 1 week, under controlled laboratory conditions, to bloom concentrations of two cultured dinoflagellates: Karenia selliformis, and Karenia mikimotoi, with demonstrated, sub-lethal, pathological ...

The cicadas of the genus Karenia are reviewed, and Karenia tibetensis sp.nov. (Hemiptera: Cicadidae) is described from Tibet, China. Pictures of the male adult and illustrations of the male genitalia are provided. A key to the species of Karenia is presented and the distribution of the Karenia species is discussed.

Competition among phytoplankton for limiting resources may involve direct or indirect interactions. A direct interaction of competitors is the release of chemicals that inhibit other species, a process known as allelopathy. Here, we investigated the allelopathic effect of three toxic microalgae species (Alexandrium tamarense, Karenia mikimotoi and Chrysochromulina polylepis) on a natural popula...