Reproductive Biology of Rainbow Smelt Osmerus dentex (Osmeridae) of the Amur River

Reproductive Biology of Rainbow Smelt Osmerus dentex (Osmeridae) of the Amur River

Spawning flocks of rainbow smelt Osmerus dentex , in an anadromous migration in the Amur River were represented by individuals of length 15–25 cm at ages 3–5, among which males predominated (1 : 2). Histologic analysis shows that rainbow smelt is an iteroparous species with determinate fecundity, gr...

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Bibliographic Details
Published in:Journal of ichthyology Vol. 60; no. 3; pp. 462 - 469
Main Authors: Burlak, O. V., Zhukova, K. A.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-05-2020
Springer Nature B.V
Subjects:
Anadromous migrations
Biology
Biomedical and Life Sciences
Body weight
Fecundity
Food chains
Length
Life Sciences
Oocytes
Osmerus
Osmerus mordax
Ovaries
Rivers
Spawning
Zoology
Amur River
rainbow smelt
ovary
testis
the Amur River
histology
fecundity
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Summary:Spawning flocks of rainbow smelt Osmerus dentex , in an anadromous migration in the Amur River were represented by individuals of length 15–25 cm at ages 3–5, among which males predominated (1 : 2). Histologic analysis shows that rainbow smelt is an iteroparous species with determinate fecundity, group-synchronous ovary organization and total spawning. Absolute fecundity (AF) varied from 20.9 to 31.2 oocytes per female; relative fecundity (RF) ranged between 679 and 776 oocytes/g of body weight between 2014–2018. AF statistically correlated and increased with length and age; such correlation between RF and length and age parameters did not occur.
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945220030054