Abstract: harbor Porpoise Ecology

Michael Williamson (whe_william@flo.org)
Mon, 23 Sep 1995 11:50:19

Return-path: <WHE_WILLIAM@FLO.ORG>
Received: from FLO.ORG by VMSVAX.SIMMONS.EDU (PMDF V5.0-4 #8767)
 Sat, 23 Sep 1995 11:49:57 -0400 (EDT)
Date: Sat, 23 Sep 1995 12:00:31 -0400 (EDT)
From: Michael Williamson <WHE_WILLIAM@FLO.ORG>
Subject: Abstract: harbor Porpoise Ecology
Message-id: <950923120031.2e645@FLO.ORG>
Content-transfer-encoding: 7BIT
From:	SMTP%"MARMAM@UVVM.BITNET" 21-SEP-1995 11:27:30.27
Subj:	abstract - harbor porpoise ecology
Date:         Thu, 21 Sep 1995 08:34:35 EST
Reply-To:     Marine Mammals Research and Conservation Discussion
Sender:       Marine Mammals Research and Conservation Discussion
Comments:     Warning -- original Sender: tag was rbaird@SOL.UVIC.CA
From:         Dagmar_Fertl@smtp.mms.gov
Subject:      abstract - harbor porpoise ecology
X-To:         ecs-all@mailbase.ac.uk, marmam@uvvm.uvic.ca
To:           Multiple recipients of list MARMAM <MARMAM@UVVM.BITNET>
     As a courtesy, the following is an abstract of an article recently
     published in Aquatic Mammals 21(2).  Apologies for cross-mailing to
     those folks that subscribe to both discussion groups.  I have supplied
     the author's address to which reprint requests should be directed.
     Aquatic Mammals is published three times a year by the European
     Association for Aquatic Mammals.  Subscription requests should be
     directed to the editor:  Paul Nachtigall, Hawaii Institute of Marine
     biology, P.O. Box 1106, Kailua, HI 96734, USA.  FAX (808) 247-5831,
     email:  nachtig@nosc.mil
     Sekiguchi, K.  1995.  Occurrence, behavior and feeding habits of
     harbor porpoises (Phocoena phocoena) at Pajaro Dunes, Monterey Bay,
     California.  Aquatic Mammals 21(2): 91-103.
     (Whale Unit, c/o South African Museum, P.O. Box 61, Cape Town, 8000,
     South Africa)
     From September 1984 to November 1985, sightings of 1594 groups of
     harbor porpoises (Phocoena phocoena) were made from a high vantage
     point at Pajaro Dunes, Monterey Bay, California, in a total of 761
     hours of observations.  Porpoises were seen within 300 m of the shore,
     mostly between 0700 and 1000 hr., apparently feeding nearshore.  The
     number and size of porpoise groups sighted were greater in July,
     August and September than in other months of the year.  Significantly
     more porpoise groups were present nearshore during flood tide than ebb
     tide.  Variations in both the number and size of groups seen may have
     been related to food availability.
     Nine stomachs of harbor porpoises collected in the Monterey Bay area
     from 1985 to 1986 were used for feeding habit analysis.  Two families
     of cephalopods and twelve families of fishes were found.  Northern
     anchovy (Engraulis mordax) had the highest index of relative
     importance, spotted cusk eel (Chilara taylori) was second, and
     rockfish (Sebastes spp.) was third, but market squid (Loligo
     opalescens) had the highest percentage of frequency of occurrence.
     Harbor porpoises in Monterey Bay appear to change their diet