Ecology Of Freshwater Fish,
Journal Year:
2024,
Volume and Issue:
33(3)
Published: May 6, 2024
Abstract
Heterospecific
sociability
could
enhance
invasion
success
in
social
species
since
non‐natives
usually
belong
to
small
founding
populations
during
the
early
stages
of
invasion.
The
twospot
livebearer
(
Pseudoxiphophorus
bimaculatus
)
is
native
Central
America
and
southern
Mexico
recently
recognised
as
invasive
Mexican
Plateau,
where
it
poses
a
threat
species.
Here,
we
evaluated
towards
either
conspecific
pair
or
shoal
four
fish
with
one
possible
compositions,
all
conspecifics
two
combined
guppies,
porthole
livebearers
twoline
skiffias.
In
second
experiment,
foraging
time,
latency
feed,
first
begin
aggressive
interactions
were
recorded
under
same
conditions
used
body
size
included
covariate
both
experiments.
All
focal
spent
significantly
more
time
given
shoals
rather
than
available
space
aquarium.
They
showed
higher
tendency
associate
pairs.
Larger
associated
more,
regardless
condition.
Twospot
fed
livebearers,
less
guppies
similarly
Latency
forage
did
not
vary
between
conditions.
involved
when
skiffias
conspecifics.
gain
benefits
from
associating
natives
conspecifics,
but
other
poeciliids.
shoaling
behaviour
may
are
scarce
while
poeciliids
lead
increased
competition.
Further
research
needed
on
heterospecific
better
understand
their
behavioural
role
likelihood.
BioScience,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
Abstract
Invasion
science
addresses
interconnected
ecological,
economic,
and
social
challenges
posed
by
the
introduction
of
nonnative
species.
Therefore,
invasion
scientists
have
to
consider
reconcile
interdisciplinary
needs
while
addressing
potential
implications
their
findings.
Navigating
diverse
disciplines,
including
environmental
sciences,
ecology,
economics,
humanities,
seek
arrive
at
informed
decisions
on
risk,
impact,
management.
Individual
biases,
uncertainties,
systemic
pressures
influence
ability
maintain
objectivity
resist
that
might
otherwise
distort
findings
or
applications.
In
present
commentary,
we
examine
conceptual
ethical
dilemmas
within
field
science,
particularly
reputational
risks
discipline
perpetuating
its
own
relevance
framing
invasions
as
insurmountable
challenges.
discussion,
highlight
how
incentive
structures,
biased
assessments
framing,
conflicts
interest
may
compromise
discipline's
integrity.
We
also
explore
questions
surrounding
human
responsibility
animal
welfare
conundrums
in
management
invasive
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
925, P. 171718 - 171718
Published: March 13, 2024
Introductions
of
non-native
species
can
lead
to
severe
impacts,
including
the
decline
ecosystem
function
through
deleterious
impacts
on
diversity.
The
successful
establishment
in
new
environments
is
first
barrier
a
must
overcome,
ultimately
depending
its
ability
either
cope
with
or
adapt
local
site-specific
conditions.
Despite
widespread
distribution
and
ecological
consequences
many
freshwater
invaders,
climatic
preferences
are
often
unknown,
as
case
Eastern
mosquitofish
Gambusia
holbrooki,
global
invader
considered
pervasive
threat
endemic
species.
Here,
we
determined
features
preferred
conditions
G.
holbrooki
Türkiye,
which
spans
wide
range
diverse
biogeographically
distinct
ecosystems,
by
surveying
populations
from
130
localities
2016
2017.
were
detected
hand-net
48
these
sites
(19
lotic,
29
lentic).
It
showed
preference
for
shallow
waters
medium
sized
rocks,
abundances
differed
spatially
across
latitudinal
gradient
was
influenced
predominantly
variations
pH.
only
other
factors
predicting
presence
low
current
velocities
gravel
substrate,
highlighting
versatility
utilising
microhabitats.
Bioclimatic
models
suggest
that
found
areas
an
average
annual
temperature
ranging
10
20
°C,
but
not
being
limiting
factor
invasion.
shows
xeric
ecosystems
endorheic
basins,
well
temperate
coastal
rivers,
upland
floodplain
rivers
wetlands,
tropical
subtropical
rivers.
These
results,
particularly
occurrence
few
factors,
emphasise
invasion
potential
should
substantiate
need
localised
invasive
management
conservation
efforts,
smaller
insular
where
fish
co-exist.
NeoBiota,
Journal Year:
2025,
Volume and Issue:
97, P. 237 - 256
Published: Feb. 19, 2025
Non-native
species
can
negatively
impact
native
ecosystems,
but
their
introduction
does
not
always
lead
to
major
ecological
changes.
This
study
examines
interactions
between
the
non-native
monkey
goby
(
Neogobius
fluviatilis
)
and
spined
loach
Cobitis
taenia
through
field
observations
controlled
laboratory
experiments.
We
assessed
microhabitat
use,
dietary
similarities,
behavioral
two
species.
Field
results
revealed
overlapping
microhabitats
dominated
by
coarse
sand,
with
no
significant
displacement
of
goby.
Laboratory
trials
further
supported
these
findings,
showing
competitive
interference
in
habitat
selection,
both
co-occupying
preferred
substrates
(coarse
sand).
Diet
analysis
indicated
limited
trophic
overlap
(17%),
suggesting
resource
partitioning
rather
than
direct
competition.
The
show
evidence
that
exerts
harmful
effects
on
river
studied.
Instead,
our
highlights
potential
for
coexistence,
emphasizing
need
nuanced
approaches
assessing
impacts
However,
it
should
also
be
noted
are
time
space-limited,
indirect
and/or
long-term
effects,
captured
this
study,
may
exist.
Current
research
contributes
a
broader
understanding
complex
biotic
resident
NeoBiota,
Journal Year:
2025,
Volume and Issue:
97, P. 257 - 277
Published: Feb. 24, 2025
Freshwater
ecosystems
are
facing
mounting
challenges.
The
widespread
introduction
of
non-native
species,
for
example,
has
resulted
in
the
loss
native
species
and
substantial
reconfiguration
diversity
patterns
across
regions.
Documenting
such
impacts
remains
critical
informing
national-level
biosecurity
policies.
Here,
we
explore
changes
biogeographic
freshwater
fish
response
to
spread
teasing
apart
geographic
(watersheds)
taxonomic
(species)
drivers
at
global
scale.
We
leveraged
databases
occurrence
estimate
unique
contributions
local
watersheds
(native
origin)
beta-diversity
domains.
Beta-diversity
metrics
a
domain
scale
can
be
interpreted
as
their
importance
uniqueness
composition.
report
significant
with
largest
Ethiopian,
Nearctic
Palearctic
domains,
even
though
non-natives
decreased
contribution
all
particularly
known
impacts.
Watersheds
identified
most
important
promoting
were
not
evenly
distributed
influenced
by
geographical
isolation
compositions
composed
many
endemic
threatened
species.
Highest
values
enhancing
mainly
observed
although
mean
higher
non-threatened
Species
from
had
wide
ecological
tolerances,
were,
general,
natives,
endemics
and/or
IUCN
threat
status.
Our
findings
underscore
consequences
shaping
fishes
Anthropocene.