Thyasira

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This page should be cited as follows (rationale):
Wiklund H, Taylor J, Dahlgren T, Todt C, Ikebe C, Rabone M, Glover A (2017) Abyssal fauna of the UK-1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca. ZooKeys (707) : 1–46, doi. Versioned wiki page: 2017-10-10, version 162590, https://species-id.net/w/index.php?title=Thyasira&oldid=162590 , contributors (alphabetical order): Pensoft Publishers.

Citation formats to copy and paste

BibTeX:

@article{Wiklund2017ZooKeys,
author = {Wiklund, Helena AND Taylor, John D. AND Dahlgren, Thomas G. AND Todt, Christiane AND Ikebe, Chiho AND Rabone, Muriel AND Glover, Adrian G.},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {Abyssal fauna of the UK-1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca},
year = {2017},
volume = {},
issue = {707},
pages = {1--46},
doi = {10.3897/zookeys.707.13042},
url = {https://zookeys.pensoft.net/articles.php?id=13042},
note = {Versioned wiki page: 2017-10-10, version 162590, https://species-id.net/w/index.php?title=Thyasira&oldid=162590 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Abyssal fauna of the UK-1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca
A1 - Wiklund H
A1 - Taylor J
A1 - Dahlgren T
A1 - Todt C
A1 - Ikebe C
A1 - Rabone M
A1 - Glover A
Y1 - 2017
JF - ZooKeys
JA -
VL -
IS - 707
UR - http://dx.doi.org/10.3897/zookeys.707.13042
SP - 1
EP - 46
PB - Pensoft Publishers
M1 - Versioned wiki page: 2017-10-10, version 162590, https://species-id.net/w/index.php?title=Thyasira&oldid=162590 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.707.13042

Wikipedia/ Citizendium:

<ref name="Wiklund2017ZooKeys">{{Citation
| author = Wiklund H, Taylor J, Dahlgren T, Todt C, Ikebe C, Rabone M, Glover A
| title = Abyssal fauna of the UK-1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca
| journal = ZooKeys
| year = 2017
| volume =
| issue = 707
| pages = 1--46
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.707.13042
| url = https://zookeys.pensoft.net/articles.php?id=13042
| pmc =
| accessdate = 2025-04-01

}} Versioned wiki page: 2017-10-10, version 162590, https://species-id.net/w/index.php?title=Thyasira&oldid=162590 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Pholadomyoida
Familia: Thyasiridae

Name

Thyasira sp. (NHM_180) – Wikispecies link – Pensoft Profile

Material examined

NHM_051 NHMUK 20170038, collected 2013-10-09, 13.8372 -116.55843, 4336 m. http://data.nhm.ac.uk/object/49b2f599-bda4-4177-932f-59effe8a3320
NHM_180 NHMUK 20170039, collected 2013-10-13, 13.93482 -116.55018, 4082 m. http://data.nhm.ac.uk/object/b84e470d-73bc-413b-88f9-3d702509a37a

Description

Minute, thin-shelled, translucent, anteriorly extended, longer than high, umbones posterior of mid-line, posteriorly angulate, antero-dorsal margin long, evenly curved, shell surface smooth. Gill with single demibranch of about 10 widely spaced filaments, ventral edge of the gill does not cover the body pouches. Foot relatively large with distal bulb (Fig. 3). NHM_180 length 1.1 mm.

Genetic data

GenBank NHM_051 18S-MF157468, COI-MF157501; NHM_180 18S-MF157478.

Remarks

Forms a monophyletic clade with four other thyasirid species (Fig. 5) and distinct from all other AB01 specimens. No genetic matches on GenBank. Morphologically the species is similar in shape to abyssal thyasirid species (Thyasira inflata, T. transversa) from the south Atlantic described and placed in Thyasira (Mendicula) by Payne & Allen (1991) but not similar to the type species of Mendicula (Lucina) induta Hedley, 1907 = M. memorata Iredale, 1924) or the widespread Mendicula ferruginosa (Forbes, 1844). No similarly shaped species has been recorded from the abyssal eastern Pacific.

Ecology

Found in polymetallic nodule province.

Taxon Treatment

  • Wiklund, H; Taylor, J; Dahlgren, T; Todt, C; Ikebe, C; Rabone, M; Glover, A; 2017: Abyssal fauna of the UK-1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca ZooKeys, (707): 1-46. doi

Images

Figure 3. Thyasira sp. (NHM_180) A Preserved specimen (NHM_180) with pieces of polymetallic nodule adhered to shell margin B Additional small specimen (live imaged at sea) NHM_051. Scale bar: 0.5 mm (A). Image attribution Glover, Dahlgren and Wiklund, 2017.
Figure 3. Thyasira sp. (NHM_180) A Preserved specimen (NHM_180) with pieces of polymetallic nodule adhered to shell margin B Additional small specimen (live imaged at sea) NHM_051. Scale bar: 0.5 mm (A). Image attribution Glover, Dahlgren and Wiklund, 2017. 
Figure 5. Phylogenetic analysis of Bivalvia: Heterodonta. 50% majority rule consensus tree from the Bayesian analyses using 18S and COI. Asterisks denotes support values of 95 or above.
Figure 5. Phylogenetic analysis of Bivalvia: Heterodonta. 50% majority rule consensus tree from the Bayesian analyses using 18S and COI. Asterisks denotes support values of 95 or above. 
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