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Overview

Brief Summary

Biology

colonial
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Source: World Register of Marine Species

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Clytia hemisphaerica (Linnaeus 1767)
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Comprehensive Description

Description

This small inconspicuous hydroid often grows on the stems of other hydroids and on red algae. It resembles bristley hairs that project at right angles to the surface on which they are growing. When examined under the light microscope, there are regular annulations around the base of the stem and below the hydrotheca. The rim of the hydrotheca has a series of deep rounded notches. The stems maybe branched or unbranched and arise from a basal stolon. The gonothecae are very characteristic, they arise from the base of the stolon and are barrel shaped with deep horizontal ridges. Typically 10mm in height.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Distribution

Distribution

probably cosmopolitan
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Distribution

southern Gaspe waters (Baie des Chaleurs, Gaspe Bay to American, Orphan and Bradelle banks; eastern boundary: Eastern Bradelle Valley), Middle North shore (from Sept- Iles to Cape Whittle, including the Mingan Islands), Prince Edward Island (from the northern tip of Miscou Island, N.B. to Cape Breton Island south of Cheticamp, including the Northumberland Strait and Georges Bay to the Canso Strait causeway), upper north shore (between Sept- Iles and Pointe des Monts) ,and Western slope of Newfoundland, including the southern part of the Strait of Belle Isle but excluding the upper 50 m in the area southwest of Newfoundland; Cobscook Bay
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Distribution

Atlantic, Azores Exclusive Economic Zone, Belgian Exclusive Economic Zone, Canada, Cobscook Bay, De Haan, European waters (ERMS scope), Gulf of Maine, Gulf of Mexico, Irish Exclusive economic Zone, Mediterranean Sea, New Zealand Exclusive Economic Zone, North Sea, North West Atlantic, South Coast of England, United Kingdom Exclusive Economic Zone, Wadden Sea, Wimereux, Zeeland
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Distribution

Common on all coasts of the British Isles.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Ecology

Habitat

Habitat

Known from rocky shores.
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Habitat

intertidal, bathyal, infralittoral and circalittoral of the Gulf and estuary
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Depth range based on 161 specimens in 1 taxon.
Water temperature and chemistry ranges based on 93 samples.

Environmental ranges
  Depth range (m): 0 - 5260
  Temperature range (°C): 2.789 - 24.203
  Nitrate (umol/L): 0.793 - 21.387
  Salinity (PPS): 33.224 - 36.324
  Oxygen (ml/l): 3.850 - 6.381
  Phosphate (umol/l): 0.118 - 1.566
  Silicate (umol/l): 0.993 - 35.702

Graphical representation

Depth range (m): 0 - 5260

Temperature range (°C): 2.789 - 24.203

Nitrate (umol/L): 0.793 - 21.387

Salinity (PPS): 33.224 - 36.324

Oxygen (ml/l): 3.850 - 6.381

Phosphate (umol/l): 0.118 - 1.566

Silicate (umol/l): 0.993 - 35.702
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Habitat

Grows on the stems of other hydroids and on red algae.
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General Ecology

Ecology

The nudibranch Hancockia uncinata is a predator of this hydroid.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Clytia hemisphaerica

The following is a representative barcode sequence, the centroid of all available sequences for this species. 

 
There is 1 barcode sequence available from BOLD and GenBank.   Below is the sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen.  Other sequences that do not yet meet barcode criteria may also be available.
 
GBCI0407-06|AY789902|Clytia hemisphaerica| ------------------------------------------TTATATATTGTTTTCGGTGCATTTTCAGGAATGGTAGGAACAGCATTA---AGTATGTTAATTAGATTAGAATTAGCAGGACCGGGTGCTATGTTCGGAGAT---GATCACTTATATAATGTAATAGTAACTGCCCATGCTTTTGTTATGATTTTCTTCTTAGTAATGCCAGTTTTAATTGGGGGTTTCGGTAATTGATTAGTACCTTTA---TATATAGGAGCACCCGATATGGCATTTCCTAGGTTAAATAACCTAAGTTTTTGGTTACTTCCACCAGCATTATTATTATTATTAGGGTCTTCTTTAGTAGAACAAGGAGCAGGTACTGGTTGAACAGTTTACCCTCCTTTATCAGGACCTCAAACGCATTCAGGAGGGTCAGTAGATATG---GCAATTTTTAGTTTACATTGTGCAGGTGCTTCATCTATTATGGGTGCCATAAATTTTATTACAACAATATTTAATATGAGAGCCCCTGGCTTGACTTTAGATAAGTTACCATTATTTGTTTGGTCAGTCTTAATTACTGCCTTTTTATTACTTTTATCTTTACCTGTGTTAGCTGGA---GCTATTACGATGTTACTTACAGATAGAAATTTTAATACAACATTCTTTGATCCAGCAGGTGGA----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------  
-- end --

Download FASTA File
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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Clytia hemisphaerica

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Species: 1
Species With Barcodes: 1

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