Results 121 to 130 of about 530 (163)

Evolutionary dynamics of the vertebrate Wnt gene repertoire

Fogg LG, Policarpo M, Salzburger W.
europepmc   +1 more source

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Sturgeons (Pisces: Acipenseridae); threats and prospects

Journal of Fish Biology, 1990
Life histories of 24 species of sturgeons are briefly summarized and threats to their existence are reviewed. The most important of these are fishing and physical disturbance of rivers (barriers; fluctuating water levels; gravel extraction). Conservation measures to limit and compensate for these impacts are reviewed.
Mario Lepage
exaly   +3 more sources

Evolution of the nucleolar apparatus during oogenesis in Acipenseridae

Development (Cambridge), 1976
ABSTRACTEvolution of the nucleoli has been followed during oogenesis in the Acipenserid fishes, Acipenser ruthenus (the sterlet) and A. güldenstädti (the sturgeon) using light and electron microscopes. In the ovaries of adults, the oogonial nuclei usually have a single nucleolus with an adjacent mass of paranucleolar fibrillar material.
exaly   +3 more sources

Sturgeons, Acipenseridae

2002
exaly   +3 more sources

Sturgeons-Acipenseridae

1954
exaly   +2 more sources

Family acipenseridae — sturgeon

2007
exaly   +2 more sources

Sturgeon family (Acipenseridae)

2013
exaly   +2 more sources

Family Acipenseridae – Sturgeons, Esturgeons

2017
exaly   +2 more sources

Sturgeon. (Acipenseridae)

2018
Notes on the habitat and breeding attributes of ...
openaire   +2 more sources

The Hypothalamo-Hypophyseal System in Acipenseridae

General and Comparative Endocrinology, 1997
Abstract The regeneration of the hypothalamo–hypophyseal system (HHS) has been studied in the sterlet following hypophysectomy (HypoX). Significant portions of non-apeptide and corticoliberinergic (CRH) neurosecretory cells (NSCs) underwent degeneration.
Andrey L Polenov, Valery V Kuzik, Olga A Danilova   +2 more
openaire   +1 more source