Cephalorhyncha nybakkeni   (Higgins, 1986)

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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Cyclorhagida | Echinorhagata | Echinoderidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic; depth range 0 - 1 m (Ref. 335).  Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Eastern Central Pacific: USA.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 0.0185 cm TL (female)

Short description Morphology

Mid-dorsal spines on segments 6-10, D 7 twice as long as D 6, 8, and 9, longer than D 10; lateral spines on segments 4, 7-12; lateral terminal spines long, 74.6% of the trunk length; lateral terminal accessory spines (of female) prominent, robust, 24.9% of the trunk length, 35.5% of the lateral terminal spine length; trunk relatively long and narrow, cuticle without evidence of hairs or perforation sites; posterior margin of segments with prominent pectinate fringe, especially in mid-trunk region and most apparent on ventral surface; ventral midline of segment 4 strongly cuticularized, lateroventral articulation zones suggested but not in line with zones of more posterior segments; segment 13 with apparent mid-dorsal articulation zone establishing two bilateral terminal tergal plates (Ref. 335).

Biology     Glossary (e.g. epibenthic)

Inhabits high-energy coarse beach sand (Ref. 335), or coarse calcareous sand (Refs. 1460, 335, 75777). Found in high-energy coarse beach sand (Ref. 335), or coarse calcareous sand (Refs. 1460, 335, 75777).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

Adrianov, A.V., C. Murakami and Y. Shirayama. 2002. (Ref. 318)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Ecology
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Predators
Reproduction
Maturity
Spawning
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Eggs
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Age/Size
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Length-weight
Length-length
Morphology
Larvae
Abundance
References
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Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Price category (Ref. 80766): Unknown.