Recent discovery of an abundant population
of the deep Mytilidae “Modiolaria” fischeri
Smith, 1885 in the Capbreton canyon
(SE of the bay of Biscay)
|ean-Claude Sorbe
l,,
)
Bernard Métivier
12 ’, Marcel l.e Pennec
(3)
(1) Université de Bordeaux 1, laboratoire d’océanographie biologique,
UMR-CNRS-EPOC 5805, 2 rue du Pr Jolyet, 33120 Arcachon, France
(2) Muséum national d’histoire naturelle, laboratoire de biologie des invertébrés marins
et malacologie, ESA8044, 55 rue Buffon, 75005 Paris, France
(3) Université de Bretagne occidentale, place Nicolas Copernic, Technopôle Brest-lroise,
29280 Plouzané, France
sorbe@biocean.u-bordeaux.fr
Abstract
An abundant population of the mytilid “Modiolaria” fischeri was sampled at about 860 m depth within the upper part of the Capbreton
canyon. The study of this material allowed giving some new informations on the ecology and the biology of this deep bivalve, a presumed
endemic species from the bav of Biscay.
Résumé
Une abondante population du mvtilidé « Modiolatia » fischeri a été échantillonnée vers 860 m de profondeur dans la partie amont du canyon de
Capbreton. L’étude de ce matériel permet de fournir quelques informations sur l’écologie et la biologie de ce bivalve profond, apparemment
endémique du golfe de Gascogne.
Introduction
Within the framework of the Oxybent research programme dedicated to
the study of benthic communities from the Capbreton area in relation
to bottom oxygenation, samplings were periodically performed with a
multinet sled (see Dauvin et al., 1995) at several sites from the shelf edge
down to 1000 metres depth. During Oxybent IX cruise, a new station
was added to the regular sampling programme (fig. 1), located within
the main channel of the Capbreton canyon (haul referencc: St. J, TS14R; 24 June 1999; 43°37.88 N-1
° 52.4 _ W at the end of the wire out; 857865 m water depth).
96
of the deep Mytilidae “Modiolaria” fischeri
Smith, 1885 in the Capbreton canyon
(SE of the bay of Biscay)
|ean-Claude Sorbe
l,,
)
Bernard Métivier
12 ’, Marcel l.e Pennec
(3)
(1) Université de Bordeaux 1, laboratoire d’océanographie biologique,
UMR-CNRS-EPOC 5805, 2 rue du Pr Jolyet, 33120 Arcachon, France
(2) Muséum national d’histoire naturelle, laboratoire de biologie des invertébrés marins
et malacologie, ESA8044, 55 rue Buffon, 75005 Paris, France
(3) Université de Bretagne occidentale, place Nicolas Copernic, Technopôle Brest-lroise,
29280 Plouzané, France
sorbe@biocean.u-bordeaux.fr
Abstract
An abundant population of the mytilid “Modiolaria” fischeri was sampled at about 860 m depth within the upper part of the Capbreton
canyon. The study of this material allowed giving some new informations on the ecology and the biology of this deep bivalve, a presumed
endemic species from the bav of Biscay.
Résumé
Une abondante population du mvtilidé « Modiolatia » fischeri a été échantillonnée vers 860 m de profondeur dans la partie amont du canyon de
Capbreton. L’étude de ce matériel permet de fournir quelques informations sur l’écologie et la biologie de ce bivalve profond, apparemment
endémique du golfe de Gascogne.
Introduction
Within the framework of the Oxybent research programme dedicated to
the study of benthic communities from the Capbreton area in relation
to bottom oxygenation, samplings were periodically performed with a
multinet sled (see Dauvin et al., 1995) at several sites from the shelf edge
down to 1000 metres depth. During Oxybent IX cruise, a new station
was added to the regular sampling programme (fig. 1), located within
the main channel of the Capbreton canyon (haul referencc: St. J, TS14R; 24 June 1999; 43°37.88 N-1
° 52.4 _ W at the end of the wire out; 857865 m water depth).
96