About Lindaspio polybranchiata

Lindaspio polybranchiata is a species of polychaete worm in the family Spionidae. It is known for its unique multiple branchial filaments, which aid in respiration and feeding. This species is typically found in deep-sea environments, often inhabiting soft sediments where it constructs burrows. Like other spionids, it uses its specialized palps to collect organic particles from the surrounding water and sediment, serving as a deposit feeder. Its adaptations to low-oxygen environments and its role in benthic ecosystems make it an important species for studying deep-sea biodiversity and ecological processes.

Classification

Animalia (Kingdom); Annelida (Phylum); Polychaeta (Class); Sedentaria (Subclass); Canalipalpata (Infraclass); Spionida (Order); Spioniformia (Suborder); Spionidae (Family); Lindaspio (Genus); Lindaspio polybranchiata (Species)

Original Name

Lindaspio polybranchiata Sui, Dong, Wu & Li, 2023

Key Reference Paper

1. Sui J, Dong D, Wu X, et al.  A new species of the genus Lindaspio Blake & Maciolek, 1992 (Annelida, Spionidae) from a cold seep near Hainan Island, China[J]. ZooKeys, 2023, 1153: 105. (Sui et al., 2023)

Description

Total length 55 mm, maximum width 4 mm, including chaetae. More than 350 crowded chaetigers. Color pale in alcohol. Prostomium incised, developed into two frontal lobes or weak horns; caruncle present or absent; occipital tentacle absent. Peristomial wings absent. Notopodia of chaetigers 2–4 with fascicles of heavy spines. Anterior neuropodial spines present. Dorsal branchiae starting from chaetiger 2; ventral branchiae starting from an anterior segment, branchiae closely associated with parapodial lamellae, continuing to posterior end. Chaetiger 1 reduced, with notopodia reduced to single lamellae lacking notochaetae. Following notopodia and neuropodia with capillaries and hooded hooks. Pygidium simple, conical, lacking cirri.

Etymology

The species is so named because it has more neuropodial branchiae than the congeners.

Distribution

Lingshui cold seep cruise, Faxian Dive 252, 1758 m, 17°37'N, 111°03'E, coll. crew of R/V Kexue


Basic Information
SpeciesPhylumCommon NameEcosystemDepthHabitatNCBI Taxonomy ID
Lindaspio polybranchiataAnnelida-Cold seep1,700Lingshui Cold Seep3032291

Genome Assembly Information
Genome AssemblyGenome SizeAssembly levelReleased yearWGS accessionSubmitterBioProjectBUSCO completeness (%)Scaffold/Contig N50 (kb)GC content (%)Repeat Rate (%)Gene Number
-1.66GbContig2025--PRJNA118820790.10 ---27,746

References
TitleJournalPubmed ID
Degenerated vision, altered lipid metabolism, and expanded chemoreceptor repertoires enable Lindaspio polybranchiata to thrive in deep-sea cold seepsBMC Biology39806408

Results of comparison between Lindaspio polybranchiata and its nearshore relatives from the paper (Yan et al., 2025)

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Annotation IDDescriptionTypeSubtypeGeneRatioEvolution TypeP-valueQ-value
GO:0033598mammary gland epithelial cell proliferationGOBiological Process8expanded1.36E-062.65E-05
GO:0014053negative regulation of gamma-aminobutyric acid secretionGOBiological Process6expanded1.38E-062.65E-05
GO:0014063negative regulation of serotonin secretionGOBiological Process6expanded1.38E-062.65E-05
GO:0032501multicellular organismal processGOBiological Process216expanded1.39E-062.65E-05
GO:0031047gene silencing by RNAGOBiological Process17expanded1.40E-062.65E-05
GO:0046321positive regulation of fatty acid oxidationGOBiological Process7expanded1.41E-062.66E-05
GO:1990267response to transition metal nanoparticleGOBiological Process22expanded1.44E-062.71E-05
GO:0046937phytochelatin metabolic processGOBiological Process4expanded1.50E-062.77E-05
GO:0046938phytochelatin biosynthetic processGOBiological Process4expanded1.50E-062.77E-05
GO:0032091negative regulation of protein bindingGOBiological Process14expanded1.50E-062.77E-05
GO:0006635fatty acid beta-oxidationGOBiological Process15expanded1.86E-063.40E-05
GO:0008168methyltransferase activityGOMolecular Function22expanded1.94E-061.62E-05
GO:0051445regulation of meiotic cell cycleGOBiological Process14expanded2.00E-063.64E-05
GO:0042054histone methyltransferase activityGOMolecular Function13expanded2.07E-061.70E-05
GO:0007194negative regulation of adenylate cyclase activityGOBiological Process7expanded2.16E-063.77E-05
GO:0030800negative regulation of cyclic nucleotide metabolic processGOBiological Process7expanded2.16E-063.77E-05
GO:0030803negative regulation of cyclic nucleotide biosynthetic processGOBiological Process7expanded2.16E-063.77E-05
GO:0030815negative regulation of cAMP metabolic processGOBiological Process7expanded2.16E-063.77E-05
GO:0030818negative regulation of cAMP biosynthetic processGOBiological Process7expanded2.16E-063.77E-05
GO:0031280negative regulation of cyclase activityGOBiological Process7expanded2.16E-063.77E-05
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