Thalassonerita
Thalassonerita Temporal range:
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda
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Subclass: | Neritimorpha |
Order: | Cycloneritida |
Family: | Phenacolepadidae |
Genus: | Thalassonerita Moroni, 1966 |
Species: | T. naticoidea
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Binomial name | |
Thalassonerita naticoidea (A. H. Clarke, 1989)
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Synonyms[2] | |
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Thalassonerita is a monotypic
Distribution
T. naticoidea lives in
Examples of localities include:
- "Bush Hill" (27°46.9478 N; 91°30.5266 W)[7]
- methane seep "Brine Pool NR-1" in depth 650 m (27°43.415 N; 91°16.756 W)[5]
- GC 234 (27°44.7318 N; 91°13.4355 W)[7]
- MC 929[7]
Description
T. naticoidea has a shell that can be closed with a calcareous operculum. The round shell is low-spired and smoothly sculptured. Its aperture has roughly a semicircular shape. The maximum recorded shell length is 16 mm.[8]
Ecology
Habitat
T. naticoidea lives at deep-sea
As a euryhaline species, these snails normally live in saline water. Their preferred salinity is 30-50 ‰, and although they can survive salinity as high as 85 ‰, they actively avoid brine with salinity over 60 ‰.[9][12] They usually move upward in natural conditions, where the concentration of salt is lower.[9] T. naticoidea has no osmoregulatory ability when the salinity is too high,[9] but it can survive high salinities, because it closes its operculum.[9]
Feeding habits
T. naticoidea feeds on
Life cycle
Oogenesis and formation of yolk (vitellogenesis) of T. naticoidea was described by Eckelbarger & Young (1997).[15] This was the first ultrastructural description of formation of yolk in today's clade Neritimorpha.[15] This process is similar to other gastropods.[15]
Eggs are laid in round and white-rimmed egg capsules on various hard substrata:[12] the dorsal part of the shells of the mussel Bathymodiolus childressi.[16] They were found also on shells of mussel Tamu fisheri.[16] There are then scars from these egg capsules on these mussels.[16] Highest number of eggs are laid from December to February.[12] Eggs are 135-145 μm in diameter.[12] There are 25-180 eggs in one eggs capsule.[12] The length of the egg capsule ranges from 1.2 to 2.9 mm.[12]
During the development of the embryo, the egg capsule is changing color from creamy ivory color to dark purple color.[12] The cleavage is holoblastic spiral cleavage as in other gastropods.[12]
Veliger larvae are hatched from eggs after four months of development from May to early July.[12] Veliger is about 170 μm long (120-278 μm).[12] Veligers feed on plankton (planktotrophic)[12] and they are probably obligate planktotrophs. They can swim with ciliated foot and they are swimming probably for at least eight months.[12] Veliger have pigmented eyespots.[12] Maybe the same chemosensory mechanisms for detecting mussel beds can be used by its larvae.[14] Veliger in size 600-700 μm can undergo metamorphosis into a snail.[14] Only two protoconchs are known to be found in situ and they measured 630 μm and 615 μm in length.[12]
Interspecific relationships
There lives a fungal filamentous
There are no known bacterial
Other animals living in communities with T. naticoidea include:
- polychaete Methanoaricia dendrobranchiata from family Orbiniidae[9]
- mussels Bathymodiolus childressi from family Mytilidae[9]
Genetics
Partial
Further reading
- Carney R. S. (1993). caption 7: "Heterotrophic Megafauna of Chemosynthetic Seep Ecosystems". In: U.S. Dept. of the Interior, Minerals Management Service. (1993). Chemosynthetic Ecosystems Studies Interim Report. Prepared by Geochemical and Environmental Research Group. U. S. Dept. of the Interior, Minerals Mgmt. Service, Gulf of Mexico OCS Regional Office, New Orleans, LA, 110 pp. PDF
- Zande J. M. & Carney R. S. (2001). "Population size structure and feeding biology of Bathynerita naticoidea Clarke 1989 (Gastropoda: Neritacea) from Gulf of Mexico hydrocarbon seeps". Gulf of Mexico Science 19(2): 107-118.
References
- .
- ^ a b "Thalassonerita Moroni, 1966". WoRMS. World Register of Marine Species. Retrieved 17 December 2023.
- ^ Van Gaest A. L. (2006). "Ecology and early life history of Bathynerita naticoidea: evidence for long-distance larval dispersal of a cold seep gastropod". Thesis. Department of Biology and the Graduate School of the University of Oregon. http://hdl.handle.net/1794/3717
- ISSN 0024-4082.
- ^ .
- ^ PMID 20098740.
- ^ a b c Gaest, Van (2006). Ecology and early life history of BATHYNERITA NATICOIDEA: evidence for long-distance larval dispersal of a cold seep gastropod (Thesis thesis).
- PMID 20098740.
- ^ .
- ^ a b c d e f Zande J. M. (1999). "An Ascomycete Commensal on the Gills of Bathynerita naticoidea, the Dominant Gastropod at Gulf of Mexico Hydrocarbon Seeps". Invertebrate Biology 118(1): 57-62. JSTOR
- ^ JSTOR 3226986.
- ^ a b c d e f g h i j k l m n o Gaest, Van (2006). Ecology and early life history of BATHYNERITA NATICOIDEA: evidence for long-distance larval dispersal of a cold seep gastropod (Thesis thesis).
- ^ Van Gaest A. L. "Larval ecology of deep-sea snails. Archived 2010-11-28 at the Wayback Machine (slide 3)". accessed 1 May 2010.
- ^
- ^ a b c Eckelbarger K. J. & Young C. M. (1997). "Ultrastructure of the ovary and oogenesis in the methane-seep mollusc, Bathynerita naticoidea (Gastropoda: Neritidae) from the Louisiana slope". Invertebrate Biology 116: 299-312. JSTOR.
- ^ a b c Gustafson R. G., Turner R. D., Lutz R. A. & Vrijenhoek R. C. (1998). "A new genus and five new species of mussels (Bivalvia, Mytilidae) from deep-sea sulfide/hydrocarbon seeps in the Gulf of Mexico". Malacologia 40(1-2): 63-112. page 90 and page 96.
- ^ a b McArthur A. G. (1996). "Molecular investigation of the evolutionary origins of hydrothermal vent gastropods". Thesis, University of Victoria, Canada.
- ^
- ^ "Bathynerita naticoides 28S ribosomal RNA gene, partial sequence". 1996-12-21.
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(help) - ^ "Bathynerita naticoides 28S ribosomal RNA gene, partial sequence". 1996-12-11.
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(help) - ^ "Bathynerita naticoidea isolate GM.1 cytochrome oxidase subunit I (COI) gene, partial cds; mitochondrial". 2016-07-26.
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(help) - ^ "Bathynerita naticoidea isolate GM.1 16S large subunit ribosomal RNA gene, partial sequence; mitochondrial". 2008-09-04.
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