TY - JOUR

T1 - Morphological peculiarities of pronephros in Russian sturgeon, Acipenser gueldenstaedtii Brandt (order acipenseriformes, family acipenseridae)

AU - Krayushkina, L.S.

AU - Gerasimov, A.A.

AU - Kirsanov, A.A.

PY - 2013

Y1 - 2013

N2 - The structure of the pronephros in Russian sturgeon larvae, Acipenser gueldenstaedtii Brandt, at different stages of early postembryonic development (from hatching till 14 days old), was studied with histological and electron microscopy methods. The formed pronephros is represented by a system of bilaterally located pronephric tubules and an external single glomus, which is not integrated directly into pronephric tubules and is located in closed pronephric chamber. The glomus is positioned below the dorsal aorta and is vascularized by its capillaries. The thin structure of the glomus has the same characteristic features that are typical of and needed for the functions of any filtering organ. By the time when larvae transfer fully to exogenous feeding, the pronephros undergoes significant degradation and it is replaced by the mesonephric kidney which develops during the period of function of the pronephros. The peculiarities of the pronephros in acipenserids are discussed comparatively with the same organ in t

AB - The structure of the pronephros in Russian sturgeon larvae, Acipenser gueldenstaedtii Brandt, at different stages of early postembryonic development (from hatching till 14 days old), was studied with histological and electron microscopy methods. The formed pronephros is represented by a system of bilaterally located pronephric tubules and an external single glomus, which is not integrated directly into pronephric tubules and is located in closed pronephric chamber. The glomus is positioned below the dorsal aorta and is vascularized by its capillaries. The thin structure of the glomus has the same characteristic features that are typical of and needed for the functions of any filtering organ. By the time when larvae transfer fully to exogenous feeding, the pronephros undergoes significant degradation and it is replaced by the mesonephric kidney which develops during the period of function of the pronephros. The peculiarities of the pronephros in acipenserids are discussed comparatively with the same organ in t

U2 - 10.1134/S0032945213030089

DO - 10.1134/S0032945213030089

M3 - Article

SP - 293

EP - 300

JO - Journal of Ichthyology

JF - Journal of Ichthyology

SN - 0032-9452

IS - 4

ER -