Shrimp (Crangon crangon L.) browsing upon siphon tips inhibits feeding and growth in the bivalve Macoma balthica (L.)
| Autor: | Hans J. Huitema, Pauline Kamermans |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1994 |
| Předmět: |
FOOD-INTAKE
Crangon FEEDING Aquatic Science DUTCH WADDEN SEA REGENERATION MACOMA-BATHICA MOLLUSCA Mollusca Ecology Evolution Behavior and Systematics CHESAPEAKE BAY Macoma PREDATION biology Ecology CRANGON-CRANGON Crangon crangon biology.organism_classification Bivalvia Crustacean BROWSING EUTROPHICATION GROWTH Siphon TIDAL-FLAT BURYING DEPTH Macoma balthica BEHAVIOR |
| Zdroj: | Journal of Experimental Marine Biology and Ecology, 175(1), 59-75. ELSEVIER SCIENCE BV |
| ISSN: | 0022-0981 |
| Popis: | The influence of siphon browsing on the feeding behaviour and growth of Macoma bclthica, a deposit-feeding bivalve, was studied in three manipulative experiments. Browsing was simulated by removing part of the inhalant siphon with scissors, or studied by exposing the bivalves to shrimps (Crangon crangon). Smaller siphons resulted in a reduction of the sediment surface area that could be grazed, and a decrease in siphon activity in M. balthica. Disturbance of the siphons by shrimps also reduced siphon activity. Siphons were reduced in size in the presence of shrimps. Immunological analyses of the stomachs of C. crangon identified this species as a consumer of siphon tips. Growth of M. balthica was negatively influenced by siphon browsing, probably due to three interactive factors: extra energy needed for siphon regeneration, less time available for feeding, and a smaller area from which to collect food. Burying depth was reduced in M. balthica with smaller siphons. However, individuals with similar siphon size were buried less deep in the sediment when not exposed to siphon browsing, suggesting an immediate response to absence of browsers. |
| Databáze: | OpenAIRE |
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