As with all Caridean
shrimp, the pleurons
of the second abdominal segment overlap those of segment 1 and 2 (photo).
As with all members of Family Pandalidae, none of the pereopods
and the carpus
2 is subdivided into several units (multiarticulated, but not more than
7 units), and the rostrum
is prominent and has movable dorsal spines. Pandalopsis
dispar has very long first antennae (more than twice as
(photo), and the distal
half of its rostrum
has dorsal spines (photo).
Total body length
to 20.8 cm.
dispar Rathbun, 1902
Common name(s): Sidestriped shrimp
at about 70 m depth in San Juan Channel. Total length (telson
rostrum) 15 cm.
|(Photo by: Dave Cowles,
How to Distinguish from
Similar Species: Pandalopsis
ampla, a deepwater species, does not have dorsal spines on
half of its rostrum.
Members of genus Pandalus
such as P.
eous, P. hypsinotus, and P.
danae have much shorter first
antennae. No other local
shrimp has the distinctive pattern of abdominal stripes that this
has (such as the white stripe that goes along the side of the abdomen),
though several such as P.
danae do have abdominal stripes.
(Arctic Ocean) to Manhattan Beach, Oregon
Soft bottoms (subtidal)
is fished commercially with bottom trawls, but because it catches
midwater shrimp for its own food it is not usually attracted to shrimp
pots. Its large, paddlelike pleopods
suggest its ample swimming ability (photo).
This species is sometimes parasitized by the bopyrid isopod Bopyroides
and Hanby, 2005
General Notes and
abundances, unusual behaviors:
We only encounter this species on deep trawls such as those
University of Washington in San Juan Channel. It is less
than many of the Pandalus species such as P.
This side view shows the distinctive abdomen stripes, the very long
and the fact that both the first and second antennae are much longer
Note that one of the first antennae is broken. Also note the
one pair of which is extended in this photo. Photo by Dave
This closeup of the side of the abdomen shows the distinctive stripes,
and also the fact that in this shrimp, as in all Caridean shrimp, the
of the second abdominal segment overlaps that of the first and third
The dorsal spines on the carapace
are only on the front half of the carapace
and the rostrum.
The spines on the rostrum
are found nearly out to the end--not just on the basal part.
that ventral spines also are found nearly out to the end.
if not all individuals of this species seem to have a distinct, dark
elongated red sspot on the anterior dorsal carapace, visible especially
from above. Photo by Dave Cowles, July 2023
Authors and Editors of Page:
Dave Cowles (2008): Created original page
CSS coding for page developed by Jonathan Cowles (2007)