Environmental DNA,
Journal Year:
2020,
Volume and Issue:
3(1), P. 142 - 156
Published: Oct. 2, 2020
Abstract
Environmental
DNA
(eDNA)
analysis
is
a
revolutionary
method
to
monitor
marine
biodiversity
from
animal
traces.
Examining
the
capacity
of
eDNA
provide
accurate
measures
in
species‐rich
ecosystems
such
as
coral
reefs
prerequisite
for
their
application
long‐term
monitoring.
Here,
we
surveyed
two
Colombian
tropical
reefs,
island
Providencia
and
Gayraca
Bay
near
Santa
Marta,
using
underwater
visual
census
(UVC)
methods.
We
collected
large
quantity
surface
water
(30
L
per
filter)
above
applied
metabarcoding
protocol
three
different
primer
sets
targeting
12S
mitochondrial
DNA,
which
are
specific
vertebrates
Actinopterygii
Elasmobranchii.
By
assigning
sequences
species
public
reference
database,
detected
presence
107
85
fish
species,
106
92
genera,
73
57
families
Bay,
respectively.
Of
identified
eDNA,
32.7%
(Providencia)
18.8%
(Gayraca)
were
also
found
UVCs.
further
congruence
genus
richness
abundance
between
UVC
approaches
but
not
Bay.
Mismatches
had
phylogenetic
ecological
signal,
with
detecting
broader
diversity
more
effectively
smaller
pelagic
those
deeper
habitats.
Altogether,
can
be
used
fast
broad
surveys
applicable
tropics,
improved
coverage
database
required
before
this
new
could
serve
an
effective
complement
traditional
Molecular Biology and Evolution,
Journal Year:
2022,
Volume and Issue:
39(8)
Published: Aug. 1, 2022
Abstract
We
present
the
fifth
edition
of
TimeTree
Life
resource
(TToL5),
a
product
timetree
life
project
that
aims
to
synthesize
published
molecular
timetrees
and
make
evolutionary
knowledge
easily
accessible
all.
Using
TToL5
web
portal,
users
can
retrieve
studies
divergence
times
between
species,
timeline
species’
evolution
beginning
with
origin
life,
for
given
group
at
desired
taxonomic
rank.
contains
time
information
on
137,306
41%
more
than
previous
edition.
The
interface
is
now
Americans
Disabilities
Act-compliant
mobile-friendly,
result
comprehensive
source
code
refactoring.
also
offers
programmatic
access
species
timelines
through
an
application
programming
interface,
which
timetree.temple.edu/api.
publicly
available
timetree.org.
Science,
Journal Year:
2020,
Volume and Issue:
369(6499), P. 65 - 70
Published: July 2, 2020
Some
cope
better
than
others
Increasingly,
research
is
revealing
how
organisms
may,
or
may
not,
adapt
to
a
changing
climate.
Understanding
the
limitations
placed
by
species's
physiology
can
help
determine
whether
it
has
an
immediate
potential
deal
with
rapid
change.
Many
studies
have
looked
at
physiological
tolerance
climate
change
in
fishes,
results
indicating
range
of
responses.
Dahlke
et
al.
conducted
meta-analysis
explore
life
stage
influence
ability
tolerate
temperature
(see
Perspective
Sunday).
They
found
that
embryos
and
breeding
adult
fishes
are
much
more
susceptible
those
other
stages
this
factor
must
therefore
be
considered
evaluations
susceptibility.
Science
,
issue
p.
65
;
see
also
35
Science,
Journal Year:
2021,
Volume and Issue:
371(6531), P. 835 - 838
Published: Feb. 19, 2021
No
waters
left
untouched
We
are
increasingly
aware
of
human
impacts
on
biodiversity
across
our
planet,
especially
in
terrestrial
and
marine
systems.
know
less
about
fresh
waters,
including
large
rivers.
Su
et
al.
looked
such
systems
globally,
focusing
several
key
measures
fish
biodiversity.
They
found
that
half
all
river
have
been
heavily
affected
by
activities,
with
only
very
tropical
basins
receiving
the
lowest
levels
change.
Fragmentation
non-native
species
also
led
to
homogenization
rivers,
many
now
containing
similar
fewer
specialized
lineages.
Science
,
this
issue
p.
835
Science,
Journal Year:
2020,
Volume and Issue:
370(6522), P. 1343 - 1348
Published: Dec. 10, 2020
Diversity
does
not
drive
speciation
The
role
of
the
environment
in
origin
new
species
has
long
been
debated.
Harvey
et
al.
examined
evolutionary
history
and
diversity
suboscine
birds
tropics
(see
Perspective
by
Morlon).
Contrary
to
expectations
that
have
higher
rates
speciation,
authors
observed
more
constant
occur
harsh
environments
relative
tropics.
Thus,
for
this
group
birds,
diversification
temperate
Arctic
regions
followed
movement
retention
results
their
local
levels
diversity.
Science
,
issue
p.
1343
;
see
also
1268
