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Barnacle larvae act...
Barnacle larvae actively select flow environments supporting post-settlement growth and survival
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- Larsson, Ann I., 1965 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Institutionen för marin ekologi, Tjärnö marinbiologiska laboratorium,Department of Marine Ecology,Department of Marine Ecology, Tjärnö Marine Biological Laboratory
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- Jonsson, Per R., 1957 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Institutionen för marin ekologi, Tjärnö marinbiologiska laboratorium,Department of Marine Ecology,Department of Marine Ecology, Tjärnö Marine Biological Laboratory
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(creator_code:org_t)
- 2006
- 2006
- English.
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In: Ecology. - 0012-9658. ; 87:8, s. 1960-1966
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Abstract
Subject headings
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- Many marine dispersive propagules select specific settlement sites based on a range of environmental cues. However, the link between larval choice and post-settlement growth and survival is still poorly understood. Here we show that cypris larvae of the barnacle Balanus improvisus actively reject surfaces exposed to local flow speeds exceeding 5-10 cm/s. Field experiments show that post-settlement growth and survival decline in free-stream flows above 15 cm/s. Moreover, studies in flume flow at local speeds exceeding 10 cm/s reveal that early juveniles show reduced feeding rates caused by deformation of the cirral fan, reduced retention efficiency, and a decrease in time spent feeding. We conclude that cypris larvae actively reject flow environments that will be suboptimal for suspension feeding in the early post-settlement phase. Our study suggests that larval choice can be adaptively connected to a specific part of the life cycle, in this case the very sensitive time after metamorphosis.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Balanus improvisus
- barnacle
- feeding
- flow
- growth
- larval behavior
- spatial distribution
- survival
- HABITAT SELECTION
- SETTLEMENT-PATTERNS
- RECRUITMENT
- EXPLORATION
- SUBSTRATA
- SURFACE
- INVERTEBRATES
- ATTACHMENT
- DEPENDENCE
- RETENTION
Publication and Content Type
- ref (subject category)
- art (subject category)
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