Mucus-net feeding by the vermetid gastropod Dendropoma maxima in coral reefs
I Kappner
SM Al-Moghrabi
C Richter
Abstract
Dendropoma maxima (Vermetidae, Mollusca) is the largest member of a conspicuous group of sessile gastropods living in shallow tropical and temperate reefs. In the northern tip of the Gulf of Aqaba, Red Sea, individuals of D. maximalive in tubes embedded in the carbonate framework of the reef flat at densities of 11.1 ± 6.3 m-2. They secrete mucus nets extending ~10 cm around the individuals. The sticky nets billow under the turbulent action of impinging waves andindiscriminately trap suspended particles. The nets are withdrawn at regular intervals and consumed. Net retraction frequency (NRF), as determined by time-lapse video in the laboratory and in the field, appears to be related to particle availability withsignificant differences between day (1.35 ± 0.16 hauls h-1) and night (2.39 ± 0.44 hauls h-1), corresponding to differences in the availability of phyto- and zooplankton. With each net load, the snail consumes 10.43 ± 0.99 µgchlorophyll a. Zooplankton accounts for about the same amount of ingested food as phytoplankton, the bulk of which is ingested during the night. Community ingestion amounts to 0.9 ± 0.5 g C m-2 d-1, showing that mucus-netfeeding by D. maxima traps plankton at rates comparable to other sessile suspension feeders in the same coral reefs.
Kappner I., Al-Moghrabi S. and Richter C. (2000) Mucus-net feeding by the vermetid gastropod Dendropoma maxima in coral reefs. Marine Ecology Progress Series 204: 309-313. 10.3354/meps204309
@article{Kappner2000,
Title = {Mucus-net feeding by the vermetid gastropod Dendropoma maxima in coral reefs},
Author = {Kappner, I and Al-Moghrabi, SM and Richter, C},
Editor = {},
Journal = {Marine Ecology Progress Series},
Year = {2000},
Pages = {309-313},
Volume = {204},
Doi = {10.3354/meps204309},
Abstract = {Dendropoma maxima (Vermetidae, Mollusca) is the largest member of a conspicuous group of sessile gastropods living in shallow tropical and temperate reefs. In the northern tip of the Gulf of Aqaba, Red Sea, individuals of D. maximalive in tubes embedded in the carbonate framework of the reef flat at densities of 11.1 ± 6.3 m-2. They secrete mucus nets extending ~10 cm around the individuals. The sticky nets billow under the turbulent action of impinging waves andindiscriminately trap suspended particles. The nets are withdrawn at regular intervals and consumed. Net retraction frequency (NRF), as determined by time-lapse video in the laboratory and in the field, appears to be related to particle availability withsignificant differences between day (1.35 ± 0.16 hauls h-1) and night (2.39 ± 0.44 hauls h-1), corresponding to differences in the availability of phyto- and zooplankton. With each net load, the snail consumes 10.43 ± 0.99 µgchlorophyll a. Zooplankton accounts for about the same amount of ingested food as phytoplankton, the bulk of which is ingested during the night. Community ingestion amounts to 0.9 ± 0.5 g C m-2 d-1, showing that mucus-netfeeding by D. maxima traps plankton at rates comparable to other sessile suspension feeders in the same coral reefs.},
}
TY - JOUR
AU - Kappner, I
AU - Al-Moghrabi, SM
AU - Richter, C
TI - Mucus-net feeding by the vermetid gastropod Dendropoma maxima in coral reefs
T2 - Marine Ecology Progress Series
PY - 2000
SP - 309-313
VL - 204
DO - 10.3354/meps204309
AB - Dendropoma maxima (Vermetidae, Mollusca) is the largest member of a conspicuous group of sessile gastropods living in shallow tropical and temperate reefs. In the northern tip of the Gulf of Aqaba, Red Sea, individuals of D. maximalive in tubes embedded in the carbonate framework of the reef flat at densities of 11.1 ± 6.3 m-2. They secrete mucus nets extending ~10 cm around the individuals. The sticky nets billow under the turbulent action of impinging waves andindiscriminately trap suspended particles. The nets are withdrawn at regular intervals and consumed. Net retraction frequency (NRF), as determined by time-lapse video in the laboratory and in the field, appears to be related to particle availability withsignificant differences between day (1.35 ± 0.16 hauls h-1) and night (2.39 ± 0.44 hauls h-1), corresponding to differences in the availability of phyto- and zooplankton. With each net load, the snail consumes 10.43 ± 0.99 µgchlorophyll a. Zooplankton accounts for about the same amount of ingested food as phytoplankton, the bulk of which is ingested during the night. Community ingestion amounts to 0.9 ± 0.5 g C m-2 d-1, showing that mucus-netfeeding by D. maxima traps plankton at rates comparable to other sessile suspension feeders in the same coral reefs.
ER -
