Anadara uropigimelana

Anadara uropigimelana
	Anadara uropigimelana
Systematics
Order :	Arcida
Superfamily :	Arcoidea
Family :	Ark clams (Arcidae)
Subfamily :	Anadarinae
Genre :	Anadara
Type :	Anadara uropigimelana
Scientific name
	Anadara uropigimelana
	( Bory de St. Vincent , 1824)

Anadara uropigimelana from Kobelt (1891: Plate 23, Fig. 5,6)

Anadara uropigimelana (Bory de Saint-Vincent, 1824) = holotype of Arca holoserica Reeve, 1844

Anadara uropigimelana is a shell - type from the family of ark shells (Arcidae) in the order of Arcida . It is native to the tropical Indo-Pacific and is also found in the Red Sea .

features

The same-folding case is up to 8 cm long. It is slightly unequal, the vortices are in front of the center of the case. It is almost obliquely square in outline and longer than it is tall. Wilhelm Kobelt gives a ratio of length to width to thickness of 10: 8: 7. The vertebrae are strongly developed. The dorsal margin is moderately long and straight. It merges into the front and rear edges at a clear angle. The angle to the front edge is steep to almost right-angled, the front edge is rounded. The angle to the rear edge is somewhat flatter, the long rear edge is almost straight, even slightly indented immediately below the angle. The area is relatively large. The ligament is rhombic and lies on both sides of the vertebrae. It takes up most of the area. The rhombus has its widest point a little behind the vertebrae.

The skin is whitish. The periostracum is brown and drawn out into dense, short bristles. These create a silky sheen on the surface. The ornamentation consists of about 30 radial, wide, but low ribs with narrow spaces. In the area of the vertebrae the ribs are dotted and striped towards the edge.

Similar species

The species is similar to Anadara antiquata (Linnaeus, 1758). However, this species has on average more ribs (35), which can be knotty thickened at the points of intersection with the growth lines, while Anadara uripgimelans has dotted or striped ribs. The ribs do not part. Anadara antiquata is mostly associated with mangroves, while Anadara uropigimelana is restricted to seagrass meadows in lagoons.

Geographical distribution and habitat

The species is native to the tropical Indo-Pacific and is also found in the Red Sea .

The animals live buried in sandy and muddy soils from the intertidal area to a depth of around 70 meters. They are attached to a larger and more solid object with byssus threads. It is associated with seagrass meadows in the Pacific. In Kiribati they form dense stocks of up to 14 mussels per square meter in the seagrass meadows of the lagoons.

Taxonomy

The taxon was established in 1824 by Jean Baptiste Bory de Saint-Vincent as Arca uropigimelana . The misspelling uropygimelana can also be found in older works (e.g. Kobelt, 1891). The species is now generally recognized as belonging to the genus Anadara Gray, 1847. A more recent synonym is Arca holoserica Reeve, 1844

Commercial importance

Anadara uropigimelana is collected locally, e.g. B. on Kiribati . There it is the most important type of mussel for the domestic market.

literature

Peter Graham Oliver, Kevin Thomas (pictures): Bivalved seashells of the Red Sea. 330 pp., Wiesbaden, Hemmen et al. a., 1992, pp. 37/38.

Individual evidence

↑ ^a ^b ^c Wilhelm Kobelt: The genus Arca L. In illustrations according to nature with descriptions. Systematic Conchylia Cabinet by Martini and Chemnitz, 8 (2): 1-238, Nuremberg 1891 Online at www.biodiversitylibrary.org (p. 85/86), plate 23 .
^ ^A ^b Lovell Augustus Reeve: Conchologia iconica, or, Illustrations of the shells of molluscous animals. Vol. 2, Reeve Brothers, London, 1843-1844. Online at www.biodiversitylibrary.org (Plate 3 Fig. 11).
↑ ^a ^b ^c Temakei Tebano, Gustav Paulay: Variable Recruitment and changing environments create a fluctuating resource: the biology of Anadara uropigimelana (Bivalvia: Arcidae) on Tarawa Atoll. Atoll Research Bulletin, 488: 1-15, Washington DC, 2000 PDF
^ Markus Huber: Compendium of bivalves. 901 S., Hackenheim, ConchBooks, 2010, ISBN 978-3-939767-28-2 , here p. 137 (middle illustration, 2nd row from above).
↑ ^a ^b MolluscaBase: Anadara uropigimelana (Bory de Saint-Vincent, 1827)

[Kobelt-1] Wilhelm Kobelt: The genus Arca L. In illustrations according to nature with descriptions. Systematic Conchylia Cabinet by Martini and Chemnitz, 8 (2): 1-238, Nuremberg 1891 Online at www.biodiversitylibrary.org (p. 85/86), plate 23 .

[Reeve-2] A ^b Lovell Augustus Reeve: Conchologia iconica, or, Illustrations of the shells of molluscous animals. Vol. 2, Reeve Brothers, London, 1843-1844. Online at www.biodiversitylibrary.org (Plate 3 Fig. 11).

[Tebano-3] Temakei Tebano, Gustav Paulay: Variable Recruitment and changing environments create a fluctuating resource: the biology of Anadara uropigimelana (Bivalvia: Arcidae) on Tarawa Atoll. Atoll Research Bulletin, 488: 1-15, Washington DC, 2000 PDF

[Huber2010-4] Markus Huber: Compendium of bivalves. 901 S., Hackenheim, ConchBooks, 2010, ISBN 978-3-939767-28-2 , here p. 137 (middle illustration, 2nd row from above).

[MolluscaBase-5] MolluscaBase: Anadara uropigimelana (Bory de Saint-Vincent, 1827)