| 1 (16) | Russian Academy of Sciences * | RUS |  |
| 2 (51) | Polish Academy of Sciences * | POL | |
| 3 (164) | Academy of Sciences of the Czech Republic * | CZE | |
| 4 (253) | Zoological Institute Russian Academy of Sciences | RUS | |
| 5 (347) | National Academy of Sciences of Ukraine * | UKR | |
| 6 (396) | Institute of Animal Reproduction and Food Research Polish Academy of Sciences | POL | |
| 7 (398) | A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Sciences | RUS | |
| 8 (437) | Bulgarian Academy of Sciences * | BGR | |
| 9 (463) | Slovak Academy of Sciences * | SVK | |
| 10 (483) | Hungarian Academy of Sciences * | HUN | |
| 11 (619) | Biology Centre of the ASCR | CZE | |
| 12 (751) | Institute of Biodiversity and Ecosystems Research Bulgarian Academy of Sciences | BGR | |
| 13 (942) | I.I. Schmalhausen Institute of Zoology National Academy of Sciences of Ukraine | UKR | |
| 14 (1049) | Institute of Vertebrate Biology of the ASCR | CZE | |
| 15 (1086) | Nature Research Centre | LTU | |
| 16 (1102) | Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences | POL | |
| 17 (1129) | Centre for Ecological Research | HUN | |
| 18 (1192) | Museum and Institute of Zoology Polish Academy of Sciences | POL | |
| 19 (1255) | Institute of Ecology and Botany Hungarian Academy of Sciences | HUN | |
| 20 (1272) | Institute of Nature Conservation Polish Academy of Sciences | POL | |
| 21 (1290) | Institute of Cytology and Genetics Russian Academy of Sciences | RUS | |
| 22 (1347) | Institute of Biology and Soil Science Russian Academy of Sciences | RUS | |
| 23 (1349) | Ruder Boskovic Institute * | HRV | |
| 24 (1356) | Palaeontological Institute Russian Academy of Sciences | RUS | |
| 25 (1404) | Limnological Institute Russian Academy of Sciences | RUS | |
| 26 (1465) | P P Shirshov Institute of Oceanology Russian Academy of Sciences | RUS | |
| 27 (1466) | Institute of Plant and Animal Ecology Russian Academy of Sciences | RUS | |
| 28 (1477) | National Academy of Sciences of Belarus * | BLR | |
| 29 (1481) | National Institute of Biology | SVN | |
| 30 (1522) | Papanin Institute for Biology of Inland Waters Russian Academy of Sciences | RUS | |
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