-
Volvation (from
Latin volvere "roll", and the
suffix -(a)tion;
sometimes called enrolment or conglobation), is a
defensive behavior in
certain animals...
- like
modern pill bugs for protection;
evidence suggests enrollment ("
volvation")
helped protect against the
inherent weakness of the
arthropod cuticle...
- but
remain sensitive to light,
which they shun. They are
capable of
volvation (rolling
themselves into a ball) to
protect themselves, rest, or sleep...
-
tribe The
defensive curling of a
trilobite over its soft
ventral organs.
Volvation, the
defensive curling of
other arthropods such as pill bugs
rolling themselves...
- marginata. They are
characterised by
their ability to roll into a ball ("
volvation") when disturbed. With a
penchant for damp and dark places,
species in...
- Thailand, Laos and Vietnam.
Members of this
genus are
characterised by
volvation, jewel-like
coloration and
distinct morphological adaptations. Several...
-
eleven to
thirteen body segments, and are
capable of
rolling into a ball (
volvation) when disturbed, as a
defense against predators. This
ability evolved...
- in cross-section,
which is
capable of
rolling itself up into a ball ("
volvation") when disturbed. This
behaviour is also
found in the pill
woodlouse Armadillidium...
- eyes, and
probably fed on detritus.
Phacops is
often found rolled up ("
volvation"), a
biological defense mechanism that is
widespread among smaller trilobites...
-
flattened or
concave lower abdomens and can curl into a
defensive ball ("
volvation") when
attacked by a
potential host, in the
manner of a pill bug. Members...
