scholarly journals Role of the sea anemone Metridium senile in structuring a developing subtidal fouling community

2011 ◽  
Vol 421 ◽  
pp. 139-149 ◽  
Author(s):  
ML Nelson ◽  
SF Craig
Keyword(s):  
Sea Anemone ◽  
Fouling Community ◽  
Metridium Senile

scholarly journals Intra-regional transportation of a tugboat fouling community between the ports of recife and natal, northeast Brazil

2010 ◽  
Vol 58 (spe3) ◽  
pp. 01-14 ◽  
Author(s):  
Cristiane Maria Rocha Farrapeira ◽  
Gledson Fabiano de Araujo Ferreira ◽  
Deusinete de Oliveira Tenório
Keyword(s):  
Rio Grande ◽  
Nonindigenous Species ◽  
Brazilian Coast ◽  
Northeast Brazil ◽  
Fouling Community

This study aimed to identify the incrusting and sedentary animals associated with the hull of a tugboat active in the ports of Pernambuco and later loaned to the port of Natal, Rio Grande do Norte. Thus, areas with dense biofouling were scraped and the species then classified in terms of their bioinvasive status for the Brazilian coast. Six were native to Brazil, two were cryptogenic and 16 nonindigenous; nine of the latter were classified as established (Musculus lateralis, Sphenia fragilis, Balanus trigonus, Biflustra savartii, Botrylloides nigrum, Didemnum psammatodes, Herdmania pallida, Microscosmus exasperatus, and Symplegma rubra) and three as invasive (Mytilopsis leucophaeta, Amphibalanus reticulatus, and Striatobalanus amaryllis). The presence of M. leucophaeata, Amphibalanus eburneus and A. reticulatus on the boat's hull propitiated their introduction onto the Natal coast. The occurrence of a great number of tunicate species in Natal reflected the port area's benthic diversity and facilitated the inclusion of two bivalves - Musculus lateralis and Sphenia fragilis - found in their siphons and in the interstices between colonies or individuals, respectively. The results show the role of biofouling on boat hulls in the introduction of nonindigenous species and that the port of Recife acts as a source of some species.

Observation of virus-like particles in thin sections of the plumose anemone, Metridium senile

2001 ◽  
Vol 81 (5) ◽  
pp. 879-880 ◽  
Author(s):  
William H. Wilson ◽  
David M. Chapman
Keyword(s):  
West Coast ◽  
Sea Anemone ◽  
Dense Core ◽  
Icosahedral Structure ◽  
The West ◽  
Thin Sections ◽  
Virus Like Particles ◽  
Metridium Senile ◽  
Electron Dense Core

Virus-like particles (VLPs) were observed in thin sections of the plumose anemone, Metridium senile, collected from seawater off the west coast of Sweden in 1969. The VLPs were observed in the nucleus of spiroblasts and amoebocytes; they were either pentagonal or hexagonal in section, indicating an icosahedral structure. Virus-like particles were ∼60 nm in diameter, with an electron-dense core 40 nm in width; they had no apparent tail. This is the first substantial report of viruses observed in sea anemone cells.

Biochemical Genetic Variation, Growth and Regeneration of the Sea Anemone, Metridium, of British Shores

1985 ◽  
Vol 65 (1) ◽  
pp. 141-157 ◽  
Author(s):  
Ann Bucklin
Keyword(s):  
Genetic Differentiation ◽  
Taxonomic Status ◽  
Sea Anemone ◽  
Sea Anemones ◽  
The United Kingdom ◽  
Metridium Senile ◽  
Genetic Differentiation Of Populations ◽  
Biochemical Genetic ◽  
Enormous Number ◽  
Interesting System

Sessile organisms capable of asexual reproduction may be expected to show much genetic differentiation among local populations: mating between distant individuals is unlikely and genetic drift will contribute to differentiation since habitats can be colonized by one or a few individuals. This study investigates genetic differentiation of populations of the sea anemone Metridium senile (L.) in Great Britain. Individuals of M. senile are sessile and reproduce both sexually, by free-spawning of gametes, and asexually, by regeneration of fragments torn from the pedal disc. Metridium senile is one of the most common and widespread of British sea anemones (Manuel, 1981); reports place it at an enormous number and variety of sites around Britian (unpublished results of surveys by the Underwater Conservation Society of the United Kingdom). The extensive geographic range and variability of the species have confounded attempts to determine the taxonomic status of the ecological and morphological forms, but make it an interesting system for genetic analysis.

Enzymatic 5-hydroxylation of l-dopa by a tyrosinase isolated from the sea anemone Metridium senile

1984 ◽  
Vol 15 (4) ◽  
pp. 301-307 ◽  
Author(s):  
Mats Carlberg ◽  
Bengt Jergil ◽  
Christina Lindbladh ◽  
Evald Rosengren
Keyword(s):  
Sea Anemone ◽  
Metridium Senile
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