1
ABSTRACT.
Micromesistius australis
∞===
∞===
M. australis
Key words:
Estructura de edad y parámetros biológicos de la polaca (Micromesistius australis) en su área
de concentración principal en el Océano Atlántico Sudoccidental en 2019
RESUMEN.
Micromesistius australis
∞==
Age structure and biological parameters of southern blue whiting
(Micromesistius australis) in its main concentration area in the southwestern
Atlantic Ocean in 2019
*
Natalia L. Ruocco
Marine and
Fishery Sciences
MAFIS
*
Marine and Fishery Sciences 39 (1): xxx-xxx (2026)
Micromesistius aus-
tralis
M. australis
M. australis
t=∞===
M. australis
Palabras clave:
Ruocco: Biology and age structure of southern blue whiting
M. australis
Sagitta
Micromesistius australis
Argentina
Atlantic Ocean
Malvinas Islands
Malvinas Islands
200 m
1,000 m
Argentina
Malvinas Islands
Malvinas Islands
35°
37°
39°
41°
43°
45°
47°
49°
51
53°
55°
69° 67° 65°63°61°59°57°55°53°51°68° 66° 64° 62° 60° 58° 56° 54°
52°
54°
56°
W
50°
S
W
S
Marine and Fishery Sciences 39 (1): xxx-xxx (2026)
t
∞
Ω
=*
=∞
∞
∞
∞
SagittaMicromesistius australis
N
O
H
Ruocco: Biology and age structure of southern blue whiting
=∞+ +
∞
∞
=e
=
t
=
∞
=
∞
∞Ω
∞t t∞**
∞ t∞**
∞t t∞**
t∞**
∞t∞**
t∞**
t∞**
Ω t∞**
Marine and Fishery Sciences 39 (1): xxx-xxx (2026)
∞
t
χ=<
∞
∞χ=
<
<
=*=
*
==
===
====
=
0
1
2
3
4
5
6
7
8
24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66
Total length (cm)
Males
Females
Frequency %( )
Ruocco: Biology and age structure of southern blue whiting
0
2
4
6
8
10
12
14
16
18
20
123456789101112131415161718192021
Age (years)
Males
Females
Frequency %( )
Marine and Fishery Sciences 39 (1): xxx-xxx (2026)
∞
t
0510 15 20 25 30
Age (years)
Males
Females
20
30
40
50
60
70
Total length (cm)
Ruocco: Biology and age structure of southern blue whiting
∞
L∞, K 10,253.50 10,288.12
∞t
∞
Ω
20 30 40 50 60 70
0
400
800
1 200,
1 600,
2 000,
Total ength (cm)l
Weight (g)
Males
Females
Marine and Fishery Sciences 39 (1): xxx-xxx (2026)
M. poutassou
∞
A
>
* 0.032
Ruocco: Biology and age structure of southern blue whiting 11
010203040506070
0.0
0.2
0.4
0.6
0.8
1.0
Total length (cm)
Mature proportion
A
0510 15 20 25
Age (years)
B
Males
Females
0.0
0.2
0.4
0.6
0.8
1.0
Marine and Fishery Sciences 39 (1): xxx-xxx (2026)
Micromesistius australis
Mi-
cromesistius australis
Micromesistius australis
Micromesistius australis
Micromesistius australis
Micromesistius australis,
Salilota australis Dissostichus eleginoides
Micromesistius
australis
Micromesisti-
us australis
Ruocco: Biology and age structure of southern blue whiting
Microme-
sistius australis
Us
Micromesistius australis
Micromesistius australis
Macruronus magellanicus
Genypterus blacodes
Micromesistius austra-
lis
Micromesistius aus-
tralis
Mi-
cromesistius poutassou
Microme-
sistius australis
Micromesistius australis
Micromesistius aus-
tralis
A
Micromesistius austra-
lis
Marine and Fishery Sciences 39 (1): xxx-xxx (2026)
Micromesis-
tius australis
Micromesistius aus-
tralis
Micromesistius australis
Merluccius hubbsi
Micromesistius
australis
Micromesistius
australis
Micromesistius australis
Micromesistius australis
Micromesistius australis
