51813_Sturgeon biodioversity an.PDF

Dorsal view of a head ofAcipensergueldenstaedtii71 cm TL from the Black Sea Danube stock above the dorsal and side views of Acip ...

Environmental Biology of Fishes 48:221–230,1997. © 1997Kluwev Academic Publishers. Printed in the Netherlands. Species structure ...

data on the range ofA.baeriiare included in Table 1 and Figure 1, and a detailed description of the range is given below. In thc ...

Figure 1. The range of the Siberian sturgeon, Acipenser baerii. Areas where sturgeon are still common, rare, or extinct are indi ...

1963). It was assumed that the non-migrating form lived in the Yenisey River over 2300 km from the Oznachennoe village to the ci ...

the Kolyma River upstream from this town, near the mouth of the Popovka River (1085 km from the Kolyma River mouth) (Ruban & ...

Figure 2.Siberian sturgeon catches in the 1980–1990s in the Ob. Yenisey, and Lena rivers. Data from Kirillov (1972). Yegorov (19 ...

nous development (which is uncommon for stur- geons), decreases in the strength of their mem- branes, and by degeneration of 15% ...

water pollution, especially, by pesticicles (Tchuprov 1986). SSSR poIzueheniyu Yakutskoi Respubliki9:1-181 (in Rus- sian). Brand ...

Kirillov, F. N. 1972. Fishes of Yakutiya. Nauka Press, Moscow. 360 pp. (in Russian). Kirillov, E N. & N. G. Solomonov (ed.) ...

tem. pp. 188–195.In:Sturgeon Fishery in Water Bodies ofthe USSR. Izdatelstvo Akademii Nauk USSR, Moscow (in Rus- sian). Yegorov, ...

Environmental Biology ofFishes48:231–239,1997. © 1997 Kluwer Academic Publishers. Printed in the Netherlands Endemic sturgeons o ...

Figure 1.Map of the Amur River System showing the upper,middle and lower reaches of the Amur River. The Ussuri River is known as ...

Figure 2.Acipenserid fishesof theAmur River: a - the head of kaluga. H. dauricus,d - ventral surface of the head of a kaluga/Amu ...

Amur extends down to the city of Blagoveshchensk (upper Amur, 883 km); the middle reach continues down to the mouth of the Ussur ...

same generation mature and spawn a year earlier 22° C (Svirskii 1971). Free embryos and larvae of the than they would during col ...

groundslocated in theupperAmurRiver and in a region 250 km longdownstream fromBlagovesh- chensk, in the secondhalfofMay and earl ...

The rest of the catch (8%) was taken upstream from Ekaterino-Nikolslaya village. Differences in the catch were due mostly to reg ...

near future this type of uncontrolled fishery will decimate kaluga and Amur sturgeon populations in the estuary and the lower Am ...

Thesis, Far Eastern State University Press. Vladivostok. 31 pp. (in Russian). Svirskii, V.G. 1968. Possible ways of the modern s ...