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:0060716labyrinthine layer blood vessel developmentGOBiological Process6expanded0.0003507070.002514808
GO:1904030negative regulation of cyclin-dependent protein kinase activityGOBiological Process6expanded0.0003507070.002514808
GO:0051046regulation of secretionGOBiological Process37expanded0.0003522530.002519831
GO:0043203axon hillockGOCellular Component4expanded0.0003723440.002679416
GO:0034112positive regulation of homotypic cell-cell adhesionGOBiological Process10expanded0.0003742560.00266445
GO:1903039positive regulation of leukocyte cell-cell adhesionGOBiological Process10expanded0.0003742560.00266445
GO:0044381glucose import in response to insulin stimulusGOBiological Process5expanded0.000401330.002836887
GO:0060740prostate gland epithelium morphogenesisGOBiological Process5expanded0.000401330.002836887
GO:0070875positive regulation of glycogen metabolic processGOBiological Process5expanded0.000401330.002836887
GO:0006530asparagine catabolic processGOBiological Process3expanded0.0004074440.00285978
GO:0010813neuropeptide catabolic processGOBiological Process3expanded0.0004074440.00285978
GO:1901052sarcosine metabolic processGOBiological Process3expanded0.0004074440.00285978
GO:0031571mitotic G1 DNA damage checkpointGOBiological Process8expanded0.0004141820.002900249
GO:0032504multicellular organism reproductionGOBiological Process79expanded0.0004181110.002920902
GO:0030799regulation of cyclic nucleotide metabolic processGOBiological Process7expanded0.0004238850.002947436
GO:0030802regulation of cyclic nucleotide biosynthetic processGOBiological Process7expanded0.0004238850.002947436
GO:0015837amine transportGOBiological Process13expanded0.00042970.002974004
GO:0045814negative regulation of gene expression, epigeneticGOBiological Process13expanded0.00042970.002974004
GO:0007631feeding behaviorGOBiological Process18expanded0.0004411850.003046425
GO:0050998nitric-oxide synthase bindingGOMolecular Function6expanded0.0004508290.001979929
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