Settlement of Iceland scallop Chlamys islandica spat in response to hydroids and filamentous red algae: field observations and laboratory experiments

Sampling carried out in the Baie des Chaleurs (Gulf of St. Lawrence, Canada) in 1990 and 1991 showed that newly settled Iceland scallop Chlamys islandica spat were not randomly distributed on the sea bottom. Various inorganic (sand, gravel, pebbles, shells of different species) and organic (algae an...

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Veröffentlicht in:	Marine Ecology Progress Series. - Inter-Research, 1979. - 99(1993), 3, Seite 283-292
1. Verfasser:	Harvey, Michel (VerfasserIn)
Weitere Verfasser:	Bourget, Edwin, Miron, Gilles
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	1993
Zugriff auf das übergeordnete Werk:	Marine Ecology Progress Series
Schlagworte:	Business Biological sciences Physical sciences


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100	1		\|a Harvey, Michel \|e verfasserin \|4 aut
245	1	0	\|a Settlement of Iceland scallop Chlamys islandica spat in response to hydroids and filamentous red algae: field observations and laboratory experiments
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520			\|a Sampling carried out in the Baie des Chaleurs (Gulf of St. Lawrence, Canada) in 1990 and 1991 showed that newly settled Iceland scallop Chlamys islandica spat were not randomly distributed on the sea bottom. Various inorganic (sand, gravel, pebbles, shells of different species) and organic (algae and animals) substrata were examined. Twenty times more post-larvae were found on perisarcs of the dead hydroid Tubularia larynx than on live hydroids and red algae (another preferred natural substratum). Maximum densities, up to 300 spat g−1 (dry wt) of hydroids, were observed on a mooring line at 2 m from the bottom. Laboratory experiments carried out to determine whether attachment behaviour of post-larvae could contribute to the observed distribution of spat showed that: (1) spat can resettle easily when dislodged from their substratum; (2) independent of their origin, over 60 % spat preferred to resettle on dead rather than live hydroids, filamentous red algae (Ptilota serrata and Phycodrys rubens) or fishing line (used as control); and (3) they also preferred to resettle on the type of substratum to which they were previously attached. Different hypotheses concerning active and passive larval settlement processes and post-larval redispersion strategy are proposed to explain this relationship between scallops and hydroids.
540			\|a Copyright © Inter-Research 1993
650		4	\|a Business \|x Industry \|x Industrial sectors \|x Manufacturing industries \|x Consumer goods industries \|x Clothing industry \|x Clothing \|x Clothing accessories \|x Footwear \|x Overshoes \|x Spats
650		4	\|a Biological sciences \|x Biology \|x Developmental biology \|x Growth and development \|x Developmental stages \|x Larvae
650		4	\|a Biological sciences \|x Biology \|x Zoology \|x Animals \|x Mollusks \|x Scallops
650		4	\|a Biological sciences \|x Biology \|x Anatomy \|x Respiratory system \|x Larynx
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Marine botany \|x Phycology \|x Algae \|x Red algae
650		4	\|a Physical sciences \|x Earth sciences \|x Hydrology \|x Water \|x Saltwater \|x Sea water
650		4	\|a Physical sciences \|x Earth sciences \|x Geography \|x Geomorphology \|x Bodies of water \|x Oceans \|x Ocean floor
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Marine botany \|x Phycology \|x Algae
650		4	\|a Biological sciences \|x Biology \|x Developmental biology \|x Animal development \|x Larval development
650		4	\|a Biological sciences \|x Ecology \|x Aquatic ecology \|x Marine ecology \|x RESEARCH ARTICLES
655		4	\|a research-article
700	1		\|a Bourget, Edwin \|e verfasserin \|4 aut
700	1		\|a Miron, Gilles \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Marine Ecology Progress Series \|d Inter-Research, 1979 \|g 99(1993), 3, Seite 283-292 \|w (DE-627)320617998 \|w (DE-600)2022265-8 \|x 16161599 \|7 nnns
773	1	8	\|g volume:99 \|g year:1993 \|g number:3 \|g pages:283-292
856	4	0	\|u https://www.jstor.org/stable/24837989 \|3 Volltext
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