|
|
|
 |
|
|
|
| Pacific Hagfish,
Eptatretus stoutii, Spotted Ratfish, Hydrolagus
colliei, and scavenger activity on tethered
carrion in subtidal benthic communities off
Western Vancouver Island |
|
|
| Author(s): Davies
S (Davies, Sarah), Griffiths
A (Griffiths, Ali), Reimchen TE
(Reimchen, T. E.) |
| Source: CANADIAN
FIELD-NATURALIST Volume:
120 Issue:
3 Pages:
363-366 Published: JUL-SEP
2006 |
| Times
Cited:
0 References: 10 |
| Abstract: The influence of
pelagic carrion food falls on marine benthic
scavenging communities was investigated at two
depths (10 m, 50 m) in Barkley Sound, west
Vancouver Island, British Columbia from 12 May
to 4 June, 2003. A remotely operated vehicle
(ROV) equipped with video cameras was used to
monitor anchored carrion (15 kg pig leg) during
daylight and darkness. The videos were
subsequently analyzed for species diversity,
abundance and the intensity of scavenging. At 10
m, Redrock Crab (Cancer productus) and Kelp
Greenling (Hexagrammos decagrammus) dominated,
while at 50 m, Spot Shrimp (Pandalus
plaryceros), Spotted Ratfish (Hydrolagus
colliei) and Pacific Hagfish (Eptatretus
stoutii) were the dominant species, most of
which were nocturnal. Hagfish were the major
consumers of the carrion and after 23 days, DO
soft tissues remained at 50 m while 40% remained
at 10 m. Within 24 hours of the carrion
deployment, two of eleven ratfish succumbed,
probably due to the direct clogging effects of
hagfish mucus on the respiratory apparatus of
the raffish. These field observations are
consistent with laboratory results suggesting
high efficacy of hagfish mucus in competitive
interactions. |
| Document Type: Article
|
| Language: English
|
| Author Keywords: Pacific
Hagfish; Eptatretus stoutii; Spotted Ratfish;
Hydrolagus colliei; Spot Shrimp; Pandalus
platyceros; Redrock Crab; Cancer productus; Kelp
Greenling; Hexagrammos decagrammus; marine
scavengers; carrion; remotely operated vehicle
(ROV); nutrient cycling; Vancouver Island;
British Columbia |
Addresses: Reimchen, TE
(reprint author), Univ Victoria, Dept Biol, POB
3020, Victoria, BC V8W 3N5 Canada
Univ
Victoria, Dept Biol, Victoria, BC V8W 3N5
Canada
Bamfield Marine Sci Ctr, Bamfield, BC
V0R 1B0 Canada |
| E-mail Addresses: reimchen@uvic.ca
|
| Publisher: OTTAWA
FIELD-NATURALISTS CLUB, PO BOX 35069, WESTGATE
PO, OTTAWA, ONTARIO K1Z 1A2, CANADA |
| Subject Category:
Biodiversity Conservation; Ecology |
| IDS
Number: 241MK |
| ISSN: 0008-3550
| |
|
| |
|
|
|
|
|
| |
|