Growth of hake in the Balearic sea: A proposal of a new growth model with higher growth rates
Alemany F., Oliver P.
Dynamique des populations marines Zaragoza : CIHEAM
Cahiers Options Méditerranéennes; n. 10 1995
pages 51-52
Article available on lin e / Article dispon ible en lign e à l’adresse :
--- http://om.ciheam.org/article.php?ID PD F=95605402
--- To cite th is article / Pou r citer cet article
--- Alemany F., Oliver P. Growth of h ake in th e B alearic sea: A proposal of a n ew growth model with h igh er growth rates. Dynamique des populations marines . Zaragoza : CIHEAM, 1995. p. 51-52 (Cahiers Options Méditerranéennes; n. 10)
---
http://www.ciheam.org/
http://om.ciheam.org/
OF SEA: A OF NEW
&
With in the sea it is essential to know
in allows one to
of the exploited stocks. So, of
canied out for
to some an
or scales (1 ) and it's difficult to length fiequency samples. The
of a (2)
of in of
methodology for estimating Von Bertal- growth parmeters
Some the results refwing to the growth of hake in the Baleark The base data for cmying
in 1990 and 1991,
is and smoothed by using a running 3 data.
n o d components by using
For to five
normal was not studied with method because only two
length distriburion and m d d be distinguished.The obtained modal distri'lwtions are in 1. must
with the exception of the first of sigdicantly
On the hand the mean value of the n o d
component was 2.88, with a standard deviation O.M.
main conchmions can be seems to be an
modal lengths between two is not one
year, but only about six months.
to obtain the Von growth was given to the first
detected modal taking it a
a g e s . This the axis of the lines that
fit the developement of modal sizes
the spawning deteet4 mea. From, these "lenght at age" with exception of two with an
age 0.75 yeiars, biased due to s w e n s 18 cm
bccawk rhc minimum legal size, growth using the
1
stock 2.
This growth based
agree the 1993 meeting
51
CIHEAM - Options Mediterraneennes
( 3 ) and with the only datum which we know fiom (4), a had cm in 8.5 months.
autumm spawned and been mentioned by
in this ($6).
to it does not
take into account the of the population in to the total length, make clear the necessity of in to solve this question, because if this
dinamics of hake in .
FEMALE HAKE GROWTH
AGE I
l
MODAL PROGRESSION
r N C r l V V ) C D h " ) ;
QUARTER l
!
2.
Linf
4.089 0.146
0.035
T O
0.514 0.184
K
45.70 126.9
Table
Alvarez and 1990. les pêches,
2-Fmgi0, al., Gomission of EEC. Contract Final February
3-pindr0, and J.A Pc&o, 1993. 1993/G
4Bell0c, G., T ~ v . P b h a Nantes,
J-BNno, J. al., P.V.
and
52
CIHEAM - Options Mediterraneennes
