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Zeitschriften
Oceanological and Hydrobiological Studies
Band 50 (2021): Heft 3 (September 2021)
Uneingeschränkter Zugang
Demographics of great sturgeon (
Huso huso
) in Iranian waters of the Caspian Sea (2008–2010)
Shima Bakhshalizadeh
Shima Bakhshalizadeh
,
Ali Bani
Ali Bani
,
Shahram Abdolmalaki
Shahram Abdolmalaki
und
Jesus T. Ponce Palafox
Jesus T. Ponce Palafox
| 02. Sept. 2021
Oceanological and Hydrobiological Studies
Band 50 (2021): Heft 3 (September 2021)
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Article Category:
Original research paper
Online veröffentlicht:
02. Sept. 2021
Seitenbereich:
325 - 332
Eingereicht:
21. Dez. 2020
Akzeptiert:
12. Feb. 2021
DOI:
https://doi.org/10.2478/oandhs-2021-0027
Schlüsselwörter
age
,
growth
,
mortality
,
management
,
population dynamics
© 2021 Shima Bakhshalizadeh et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1
Sampling locations (red closed circles) of sturgeon in the Iranian coastal waters of the Caspian Sea
Figure 2
Length–weight relationship for female (open circles and dotted line) and male (closed circles and solid line) great sturgeon in the Iranian coastal waters of the Caspian Sea; W = gutted weight (kg); FL = fork length (cm)
Figure 3
Age composition for female and male great sturgeon between 2008 and 2010 in the Iranian coastal waters of the Caspian Sea (n = 105). Arrows indicate the direction in which the observed frequencies differed from those expected under the assumption that the age class was uncorrelated with sex.
Figure 4
The von Bertalanffy growth function fit to size-at-age relationships for female (open circles and dotted line) and male (closed circles and solid line) great sturgeon in the Iranian coastal waters of the Caspian Sea; Lt = fork length (cm)
Figure 5
Confidence regions (95%) of mean estimates for the growth parameters (K and L∞) for males and females of great sturgeon in1990–1994 and in 2008–2010 in the Iranian coastal waters of the Caspian Sea
Descriptive length and weight composition of male and female great sturgeon from the Iranian waters of the Caspian Sea in 2008–2010
Size
Sex
Number
Mean
Standard error of the mean
Minimum
Maximum
Fork Length (cm)
Female
33
214.17
7.06
84
305
Male
24
194.17
8.10
84
255
Weight (kg)
Female
33
111.26
10.70
4
287
Male
24
69.77
6.72
4
141