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180606s2004 xx |||||o 00| ||eng c |
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|a (DE-627)JST114392560
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|a (JST)24867757
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Nugues, Maggy M.
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Coral defence against macroalgae:
|b differential effects of mesenterial filaments on the green algaHalimeda opuntia
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|c 2004
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
|b c
|2 rdamedia
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|a Online-Ressource
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|a ABSTRACT: Several studies have shown that the growth of macroalgae is reduced when in contact with corals, but very few have addressed the mechanisms involved. This study provides for the first time an explicative mechanism for the inhibition of algal growth by scleractinian corals. In experimental field contacts between 8 species of scleractinian corals and the green algaHalimeda opuntia, corals extruded their mesenterial filaments (MFs) onto the plant. In some coral species, this extrusion was followed by persistent discolouration of the contacting algal segments. Microscopic examination of these segments revealed migration of chloroplasts away from the surface of segments, as well as the presence of nematocysts from the MFs fired into the algal epidermis. There was a significant relationship between the extent of algal discolouration and both the occurrence and length of the MFs, potentially explaining differences among coral species in their ability to damage algal segments. MF extrusion also occurred in experimental contacts with 2 other species of macroalgae (Lobophora variegataandDictyotasp.). The use of extruded MFs by scleractinian corals against macroalgae is similar to their aggressive behaviour against other scleractinian coral species. However, the ranking of competitive ability againstH. opuntia(measured by the extent of algal discolouration) differed from that established in interspecific aggressions among corals. The great abundance and wide distribution of the species of corals and macroalgae used in this study, together with observations of MFs in natural interactions, suggest that the use of MFs is a common and widespread mechanism of interaction between corals and macroalgae. We conclude that coral–algal competition involves complex mechanisms and is therefore likely to represent a complex hierarchical structure, in which macroalgae are not always able to overgrow and kill corals.
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|a © Inter-Research 2004
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| 650 |
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4 |
|a Coral–algal competition
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| 650 |
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4 |
|a Defence mechanisms
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| 650 |
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4 |
|a Algae
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| 650 |
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4 |
|a Coral
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| 650 |
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4 |
|a Competition
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| 650 |
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4 |
|a Scleractinian
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| 650 |
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4 |
|a Caribbean
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Habitats
|x Aquatic habitats
|x Coral reefs
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Zoology
|x Animals
|x Invertebrates
|x Aquatic invertebrates
|x Corals
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Marine botany
|x Phycology
|x Algae
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Marine botany
|x Phycology
|x Algae
|x Macroalgae
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Cytology
|x Cell biology
|x Cellular structures
|x Intracellular space
|x Organelles
|x Chloroplasts
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| 650 |
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4 |
|a Applied sciences
|x Materials science
|x Physical damage
|x Fire damage
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Landforms
|x Coastal landforms
|x Coastal barriers
|x Reefs
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| 650 |
|
4 |
|a Biological sciences
|x Biology
|x Anatomy
|x Body tissues
|x Epithelium
|x Epidermis
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| 650 |
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4 |
|a Business
|x Industry
|x Industrial sectors
|x Manufacturing industries
|x Consumer goods industries
|x Clothing industry
|x Clothing
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| 650 |
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4 |
|a Behavioral sciences
|x Human behavior
|x Social behavior
|x Tact
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| 655 |
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4 |
|a research-article
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| 700 |
1 |
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|a Delvoye, L.
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bak, Rolf P. M.
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Marine Ecology Progress Series
|d Inter-Research, 1979
|g 278(2004) vom: Sept., Seite 103-114
|w (DE-627)320617998
|w (DE-600)2022265-8
|x 16161599
|7 nnns
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| 773 |
1 |
8 |
|g volume:278
|g year:2004
|g month:09
|g pages:103-114
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| 856 |
4 |
0 |
|u https://www.jstor.org/stable/24867757
|3 Volltext
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|d 278
|j 2004
|c 09
|h 103-114
|