''Gigantidas tangaroa'' is a species of deep-sea
mussel
Mussel () is the common name used for members of several families of bivalve molluscs, from saltwater and Freshwater bivalve, freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other ...
, a marine
bivalve
Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed b ...
mollusk
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...
in the family
Mytilidae
The Mytilidae are a family (biology), family of small to large Marine life, marine and Brackish water, brackish-water bivalve molluscs in the order (biology), order Mytilida. One of the genera, ''Limnoperna fortunei, Limnoperna'', even inhabits f ...
, the mussels.
[MolluscaBase eds. (2020). MolluscaBase. Gigantidas tangaroa (Cosel & B. A. Marshall, 2003). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=888567 on 2020-12-31]
Habitat
This species was first described from northern
New Zealand
New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
, from
seep
A seep or flush is a moist or wet place where water, usually groundwater, reaches the Earth's surface from an underground aquifer.
Description
Seeps are usually not of sufficient volume to be flowing beyond their immediate above-ground location. ...
s off
Cape Turnagain
Cape Turnagain is a prominent headland on the east coast of New Zealand's North Island, part way between Hawke Bay and Cook Strait, between the mouths of the Pōrangahau and Ākitio Rivers.
The cape was named by Captain James Cook
Ca ...
and
Cape Kidnappers
Cape Kidnappers, known in Māori as , and officially named Cape Kidnappers / Te Kauwae-a-Māui, is a headland at the southern extremity of Hawke Bay on the east coast of New Zealand's North Island. It is at the end of an peninsula that protr ...
at a depth of .
[VON COSEL, Rudo, and Bruce A. Marshall. "Two new species of large mussels (Bivalvia: Mytilidae) from active submarine volcanoes and a cold seep off the eastern North Island of New Zealand, with description of a new genus."The Nautilus 117.2 (2003): 31-46.]
Description
The
shell
Shell may refer to:
Architecture and design
* Shell (structure), a thin structure
** Concrete shell, a thin shell of concrete, usually with no interior columns or exterior buttresses
Science Biology
* Seashell, a hard outer layer of a marine ani ...
of this species is large, up to long, showing external dull white growth lines. Its anterior margin is narrow but evenly rounded. Its posterior margin is convex dorsally, its posterior angulation well-defined, situated above the
posterior adductor scar. Its periostracum is thick, hard and a dark brown colour. Its anterior adductor scar is short, and its
pallial line curves parallel to its ventral margin.
References
Further reading
*Jones, W. J., et al. "Evolution of habitat use by deep-sea mussels." Marine Biology 148.4 (2006): 841–851.
*Jones, W. Jo, and Robert C. Vrijenhoek. "Evolutionary relationships within the ''Bathymodiolus childressi'' group." Cahiers de biologie marine 47.4 (2006): 403.
*von Cosel, Runo, and Ronald Janssen. "Bathymodioline mussels of the ''Bathymodiolus'' (sl) ''childressi'' clade from methane seeps near Edison Seamount, New Ireland, Papua New Guinea: (Bivalvia: Mytilidae)." Archiv für Molluskenkunde: International Journal of Malacology 137.2 (2008): 195–224.
* Cosel R.von & Marshall B.A. 2003. Two new species of large mussels (Bivalvia: Mytilidae) from active submarine volcanoes and a cold seep off the eastern North Island of New Zealand, with description of a new genus. The Nautilus 117(2): 31-46
* Cosel R. von & Janssen R. 2008. Bathymodioline mussels of the Bathymodiolus (s. l.) childressi clade from methane seeps near Edison Seamount, New Ireland, Papua New Guinea: (Bivalvia: Mytilidae). Archiv für Molluskenkunde 137(2): 195-224
External links
*
ADW entry
tangaroa
Tangaroa (Māori; Takaroa in the South Island dialect; cognate with Tagaloa in Sāmoan) is the great atua of the sea, lakes, rivers, and creatures that live within them, especially fish, in Māori mythology. As Tangaroa-whakamau-tai, he exercis ...
Molluscs described in 2003
{{Mytilidae-stub