10 research outputs found
Impactos negativos en las pesquerías de lisas (Pisces, Mugilidae) en Cuba de 1971 a 1995 y recomendaciones para incrementar su producción
Se presenta la situación actual de las lisas (Pisces, Mugilidae en Cuba, espacialmente respecto a los daños sufridos en sus pesquerías de 1971 a 1995. Se revisan las especies marinas presentes en aguas cubanas y sus características generales, así como las principales zonas, artes y épocas de pesca. Se presentan las capturas por regiones y se analizan los desembarques por categorías, de acuerdo con su composición por espec1e. Se revisa la Situación del grupo en los últimos años, cuyas
capturas han disminuído a sólo un 5% del nivel más alto alcanzado, debido a los perjuicios ambientales de las lagunas y áreas costeras aledañas causadas por acciones antrópicas, que se describen, así como por disminuciones en el esfuerzo pesquero.
Se presentan las relaciones entre las capturas y la capacidad de agua embalsada acumulada en el país, así como entre la talla media de las hembras de Mugil liza y el año en el periodo de 1981 a 1989 en la localidad históricamente más importante. Se analizan propuestas para incrementar la producción de los mugílidos en Cuba relacionadas con las pesquerías y la aplicación de técnicas de "Vallicultura integrada" como única vía para rehabilitar el medio ambiente lagunar con un balance adecuado de costo-rentabilidad.
ABSTRACT
The present status of the mullets (P1sces, Muglhdae),Cuba is rev1ewed, spec1ally in relation to their
físhery between 1971 end 1995.
The manne spec1es, Cuban waters, the1r general characterst1cs, as well as the main zonas, gears and
flshmg Matons are shown.
The captures by
reg1ons
and
the
landings
by
category
and
by
specíes
compositton
are
anatysed
.
The
11tuat10n
ol
the
group
in
recent
years
is
rev1ewed
,
in
which
the
captures
decreased
to
only
5%
of
the
h1ghest
leve!
attamed
due
to
envuonmental
damages
to
coastal
lagoons
and
nearby
areas
causad
by
human
actions
and
by
a
lower
flsh1ng
effort.
The
retau
onsh1ps
are
shown
between
captures
and
the
country's
cumulatíve
capacitv
of
water
dams,
as
well
as
that
of
the
average
s11e
of
Mugilliza
tamales
m
the
years
between
1981
and
1989
ín
the
most
historically
important
locat1on
•.
Proposals
to
mcrease
mullet
production
in
Cuba
m
relat1on
to
fisheries
and
establishment
of
"i
ntegrated
Vallicultura•
as
the
only
wav
of
restonng
the
tagoon
environment
with
a
good
cost-benefi
t
balance
are
analysed
Generation cycle closure of the spotted rose snapper, Lutjanus guttatus, in captivity
The spotted rose snapper, Lutjanus guttatus, is culture in several Latin American countries. The present study reports the generation closure with juveniles obtained from wild adults which matured and spawned at a Mazatlan laboratory (Mexico). F1 fish were sexually matured at 2 years of age, and spawning was induced in 2 successive years. F2 juveniles were reared until their sexual maturity and spawned at the same laboratory. Result indicate that a reliable supply of laboratory reared spawners can be achieved, avoiding the wild spawners dependence and allow the development of selection and genetic improve programs
Mapping the global potential for marine aquaculture
Marine aquaculture presents an opportunity for increasing seafood production in the face of growing demand for marine protein and limited scope for expanding wild fishery harvests. However, the global capacity for increased aquaculture production from the ocean and the relative productivity potential across countries are unknown. Here, we map the biological production potential for marine aquaculture across the globe using an innovative approach that draws from physiology, allometry and growth theory. Even after applying substantial constraints based on existing ocean uses and limitations, we find vast areas in nearly every coastal country that are suitable for aquaculture. The development potential far exceeds the space required to meet foreseeable seafood demand; indeed, the current total landings of all wild-capture fisheries could be produced using less than 0.015% of the global ocean area. This analysis demonstrates that suitable space is unlikely to limit marine aquaculture development and highlights the role that other factors, such as economics and governance, play in shaping growth trajectories. We suggest that the vast amount of space suitable for marine aquaculture presents an opportunity for countries to develop aquaculture in a way that aligns with their economic, environmental and social objectives