Tag Archives: hydroid

Sarsia sp. :Photomicrography of Dr. Anita Brinckmann-Voss : The Race Rocks Taxonomy

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61_19sarsia_eximia_hyd

Single Polyp

Colony

Colony

 

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Family Anthoathecatae
Genus Sarsia
Species sp.

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of:Dr. Anita Brinckmann- Voss. . They can not be used or modified without her written permission.

See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Garveia annulata : Hydroid Photomicrography of Dr. Anita Brinckmann-Voss–The Race Rocks Taxonomy

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Garveia annulata (Hydrozoa, Anthoathecatae,Bougainvilliidae)

garv

Garveia annulata Nutting, 1901


All pictures are protected by copyright : December, 2001, Dr. Anita Brinckmann-Voss..
and /or Lester B. Pearson College. for consideration of permission to use for educational purposes only.

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Anthoathecatae
Family Bouagainvilliidae
Genus Garveia
Species annulata
Nutting, 1901

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of:Dr. Anita Brinckmann- Voss. . They can not be used or modified without her written permission.
See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Ectopleura marina : The Race Rocks Taxonomy

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ah30810ectopleura

This close-up of an Ectopleura marina was photographed by Adam Harding at West Race Rocks around 60-70ft– 23/08/10

 

The three pictures above of Ectopleura were taken by Ryan Murphy in September 2010.

Physical Description: The Ectopleura marina are in polyp form. Polyps are cylindrical, with one end attached and the other free with tentacles and a mouth for feeding. The polyp stems are usually 2 – 5 cm long, with 18 tentacles in two whorls around the mouth, and 22 – 26 tentacles away from the mouth. Unlike their close relative, Ectopleura marina are solitary, or in groups of well-spaced individuals. Feeding polyps are pink, hence their common name pink-mouth hydroid. Global Distribution: The Ectopleura marina is found on the western coast of North America. Habitat: Ectopleura marina have been found on rocks in low intertidal and subtidal zones where there is fast flowing current. They are fairly common on exposed or semi-protected rocky shores, and are also found on floats.
Feeding: When starved for one or two days, polyps will eat active copepods, whereas when well-fed, polyps do not feed or respond to active prey. The polyps catch and stun their prey in their whorl of tentacles. They eat small crustaceans, larvae, chaetognaths, and annelid worms. When developing, polyps feed on eggs of various other invertebrates, plankton, and fish larvae.

Predators: No information on predators has been found, however the tentacles of hydroids contain poisons (nematocysts) that are a good defense against predators.Reproduction: Each colony of hydroids is usually of a single sex, although some hermaphrodites have been found. Medusa buds are produced in clusters which are attached between the two whorls of tentacles on the polyp. These medusoids develop 3 – 5 and do not come free, but rather stay small and attached until gametes develop, and usually die soon after. Sperm is shed into the water, but eggs stay in the medosoids and are not released until they have developed into larvae, which resemble the feeding polyps.

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Hydroida
Family Tubulariidae
Genus Ectopleura
Species marina
Common Name: pink mouth hydroid

see this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Interesting Fact: Ectopleura marina was formerly known as Tubularia marina. It also belongs to one of the most primitive and most diverse groups of multicellular organisms. References: “Hydrozoa.” Wikipedia. Wikipedia Encyclopedia. 12 Nov. 2005 Kozloff, Eugene N. Marine Invertebrates of the Pacific Northewest. Seattle: University of Washington P, 1996. Morris, R H., D P. Abbott, and E C. Haderlie. Intertidal Invertebrates of California. California: Stanford UP, 1980. “Phylum Cnidaria.” BC Marine Life Cnidaria. 13 Nov. 2005 <http://www.elasmodiver.com/BCMarinelife/BCML%20cnidaria.htm>. Strathmann, Megumi F. Reproduction and Development of Marine Invertebrates of North Pacific Coast. Seattle: Washington UP, 1987.
This file is provided as part of a collaborative effort by the students, volunteers,faculty and staff of Lester B. Pearson College–Grace Ho, 2005

Eudendrium sp. : Race Rocks Taxonomy — Photomicrography of Dr. Anita Brinckmann-Voss

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Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Anthoathecatae
Family Eudendriidae
Genus Eudendrium
Species sp.
Common Name:

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999-All Images on this page are the property of:Dr. Anita Brinckmann- Voss..They can not be used or modified without her written permission. See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Symplectoscyphus turgidus : Race Rocks Taxonomy Photomicrography of Dr. Anita Brinckmann-Voss

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Symplectoscyphus turgidus (Trask, 1851), (Hydrozoa, Leptothecatae, Sertulariidae. d: colony; e: single hydranth enlarged without medusa buds. A common subtidal species, occasionally intertidal species. Note rectangular diatoms attached to the thecae of the colony (upper right hand corner of each picture)

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Class Leptothecatae
Family Setulariidae
Genus Symplectoscyphus
Species turgidus (Trask, 1851),

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of: Dr. Anita Brinckmann-Voss.. They can not be used or modified without her written permission.

Sertularia sp. :Race Rocks Taxonomy: Photomicrography of Dr. Anita Brinckmann-Voss

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Stem up to 20 cm long, with the colony having the appearance of a thin bottlebrush. It is found in the same location as Tubularia regalis, the floor of the cave at Swordfish island – near Race Rocks.

 

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Leptothecata (=Leptomedusae)
Family Sertulariidae
Genus Sertularia
Species sp.
Common Name:

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999-All Images on this page are the property of:Dr. Anita Brinckmann- Voss..They can not be used or modified without her written permission.

see this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Aglaophenia latirostris: Photomicrography of Dr. Anita Brinckmann-Voss

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Aglaophenia latirostris . This featherlike hydroid is common, mostly subtidal , RaceRocks and Swordfish Island. Natural size to 5 cm.4aglaophenia

aglao-1

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Leptothecata (=Leptomedusae)
Family Aglaopheniidae
Genus Aglaophenia
Species latirostris (Nutting, 1900)
Common Name:

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999-All Images on this page are the property of Dr. Anita Brinckmann- Voss..They can not be used or modified without her written permission.
see this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Aglaophenia inconspicua : Photomicrography of Dr. Anita Brinckmann-Voss

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Aglaophenia inconspicua (?) (Hydrozoa , Leptothecatae, Aglaopheniidae)

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Leptothecata (=Leptomedusae)
Family Aglaopheniidae
Genus Aglaophenia
Species inconspicua (Torrey, 1902)
Common Name:

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999: All Images on this page are the property of: Dr. Anita Brinckmann-Voss..They can not be used or modified without her written permission.

see this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Campanularia sp. : Photomicrography of Dr. Anita Brinckmann-Voss-The Race Rocks Taxonomy

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Campanularia sp. (Hydrozoa, Leptothecatae, Campanulariidae) Race Rocks, low intertidal.

61_05campanularia_sp_abieti

 

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Leptothecata (=Leptomedusae)
Family Campanularidae
Genus Campanularia
Species sp.
Common Name:

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999-All Images on this page are the property of: Dr. Anita Brinckmann- Voss..They can not be used or modified without her written permission.

see this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Research paper indicating possible medicinal properties: accessed July, 2014

4-Hydroxybenzoyl Derivative from the Aqueous Extract of the Hydroid Campanularia sp.

Marine Natural Products Laboratory, Chemistry Department, Aberdeen University, Aberdeen AB24 3UE, Scotland, U.K.
J. Nat. Prod., 2005, 68 (3), pp 453–455
DOI: 10.1021/np049666n
Publication Date (Web): February 26, 2005
Copyright © 2005 American Chemical Society and American Society of Pharmacognosy

A new compound, N-(4-guanidinobutyl)-2-(4-hydroxyphenyl)-2-oxo-acetamide (1) was isolated from the aqueous extract of the hydroid Campanularia sp. Its structure was elucidated using NMR spectroscopic techniques and mass spectrometric analysis. The most stable conformation was determined using molecular modeling and the results of a NOESY experiment. Although compound 1 shows structural similarities to some highly potent histone deacetylase inhibitors (HDACi), e.g., suberoylanilide hydroxamic acid (SAHA) (2) and trichostatin A (TSA) (3), it does not inhibit the growth of ARP-1 cells at 100 μM concentration, a significant indication that it has no inhibitory activity to HDACs.

molformula

Hydractinia laevispina, (hydroid) Race Rocks taxonomy

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This set of photomicrographs by Dr. Anita Brinckmann Voss shows a colony growing on a frond of Aglaophenia sp.

nudibranch

Nudibranch grazing on polyps

hydlaevcolony

A densly -packed colony

hydrlaevcolony-1 hydrlaevispina hydrlaevcolony
see this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Species recognized by World Register of Marine Species (WoRMS):
Biota
Animalia
Cnidaria
Hydrozoa
Hydroidolina
Anthoathecata
Filifera
Hydractiniidae L. Aggasiz, 1862
Hydractinia Van Beneden, 1841
Hydractinia laevispina Fraser, 1922

 

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