Abstract
Feeding in early life stages of the sedentary snail Crepidula is effected both by the use of the radula and by filtering with the gill. The present study is a contribution to the knowledge of the mechanisms of feeding by early juvenile snails of Crepidula fecunda. Experimental observations were made on specimens of known ages as they were fed constant concentrations of microalgae in the presence of a primary biological film on a glass substrate. Feeding activity was filmed under the microscope, and images were digitized for the identification and quantification of feeding structures. A morphological analysis was made of the structures associated with this process. Results showed that the radula was functional beginning in 1-day-old juveniles, and the gill functioned in respiration. Gill function in filter-feeding began in juveniles of 9 days old when dorsal and ventral ciliation had developed, as well as the food pouch. The latter structure begins activity as soon as the gill starts food collection. Osphradia appeared simultaneous with development of the filter feeding capacity by the gill. In their earliest stages after metamorphosis, the young snails begin life by radular scraping of primary biofilms, gradually shifting to filter feeding as the gill developed a critical number of filaments and cilia.
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References
Beninger PG, Donval A, Le Pennec M (1995) The osphradium in Placopecten magellanicus and Pecten maximus (Bivalvia, Pectinidae): histology, ultrastructure, and implications for spawning synchronisation. Mar Biol 123:121–129
Black R, Lymbery A, Hill A (1988) Form and function: size of radular teeth and inorganic content of faeces in a guild of grazing molluscs at Rottnest Island, Western Australia. J Exp Mar Biol Ecol 121:23–35
Cañete JI, Ambler RP (1992) Desarrollo intracapsular del gastrópodo comestible Calyptraea (Trochita) trochiformis (Born, 1778), en Chile. Rev Chilena Hist Nat 65:255–266
Chaparro OR, Bahamondes-Rojas I, Vergara AM, Rivera AA (1998) Histological characteristics of the foot and locomotory activity of Crepidula dilatata Lamarck (Gastropoda: Calyptraeidae) in relation to sex changes. J Exp Mar Biol Ecol 223:77–91
Chaparro OR, Pereda SV, Bahamondes-Rojas I (2001) Effects of protandric sex change on radula, pedal morphology, and mobility in Crepidula fecunda (Gastropoda: Calyptraeidae). N Z J Mar Freshw Res 35:881–890
Chaparro OR, Thompson RJ, Pereda SV (2002) Feeding mechanisms in the gastropod Crepidula fecunda. Mar Ecol Prog Ser 234:171–181
Chaparro OR, Segura CJ, Navarro JM, Thompson RJ (2004) The effect of food supply on feeding strategy in sessile female gastropods Crepidula fecunda. Mar Biol 144:79–87
Croll RP (1983) Gastropod chemoreception. Biol Rev 58:293–319
Declerck CH (1995) The evolution of suspension feeding in gastropods. Biol Rev 70:549–569
Eyster LS, Pechenik JA (1988) Comparison of growth, respiration and feeding of juvenile Crepidula fornicata (L.) following natural or KCl-triggered metamorphosis. J Exp Mar Biol Ecol 118:269–279
Gallardo CS (1977) Two modes of development in the morphospecies Crepidula dilatata (Gastropoda: Calyptraeidae) from southern Chile. Mar Biol 39:241–251
Hawkins SJ, Watson DC, Hill AS, Harding SP, Kyriakides MA, Hutchinson S, Norton TA (1989) A comparison of feeding mechanisms in microphagous, herbivorous, intertidal, prosobranchs in relation to resource partitioning. J Moll Stud 55:151–165
Hoagland KE (1979) The behavior of three sympatric species of Crepidula (Gastropoda: Prosobranchia) from the Atlantic, with implications for evolutionary ecology. Nautilus 94:143–149
Hoagland KE (1986) Patterns of encapsulation and brooding in the Calyptraeidae (Prosobranchia: Mesogastropoda). Am Malacol Bull 4:173–183
Hughes RN (1986) A functional biology of marine gastropods. Croom Helm, London
Langdon CJ, Newell RIE (1990) Utilization of detritus and bacteria as food sources by two bivalve suspension-feeders, the oyster Crassostrea virginica and the mussel Geukensia demissa. Mar Ecol Prog Ser 58:299–310
Navarro JM, Chaparro OR (2002) Grazing-filtration as feeding mechanisms in motile specimens of Crepidula fecunda (Gastropoda: Calyptraeidae). J Exp Mar Biol Ecol 270:111–122
Newell RC, Kofoed LH (1977) The energetics of suspension-feeding in the gastropod Crepidula fornicata L. J Mar Biol Assoc UK 57:161–180
Orton JH (1912) The mode of feeding of Crepidula, with an account of the current-producing mechanism in the mantle cavity, and some remarks on the mode of feeding in gastropods and lamellibranchs. J Mar Biol Assoc UK 9:444–478
Orton JH (1913–1915) On ciliary mechanisms in brachiopods and some polychaetes, with a comparison of the ciliary mechanisms on the gills of molluscs, protochordata, brachiopods, and cryptocephalous polychaetes, and an account of the endostyle of Crepidula and its allies. J Mar Biol Assoc UK 10:283–311
Pechenik JA, Eyster LS (1989) Influence of delayed metamorphosis on the growth and metabolism of young Crepidula fornicata (Gastropoda) juveniles. Biol Bull 176:14–24
Pechenik JA, Estrella MS, Hammer K (1996a) Food limitation stimulates metamorphosis of competent larvae and alters postmetamorphic growth rate in the marine prosobranch gastropod Crepidula fornicata. Mar Biol 127:267–275
Pechenik JA, Hilbish TJ, Eyster LS, Marshall D (1996b) Relationship between larval and juvenile growth rates in two marine gastropods, Crepidula plana and C. fornicata. Mar Biol 125:119–127
Purchon RD (1977) The biology of Mollusca. Pergamon Press, New York
Putnam DA (1964) The dispersal of young of the commensal gastropod Crepidula adunca from its host, Tegula funebralis. Veliger 6:63–66
Steneck RS, Watling L (1982) Feeding capabilities and limitation of herbivorous molluscs: a functional group approach. Mar Biol 68:299–319
Werner B (1951) Über die bedeutung der wasserstromerzeugung und wasserstromfiltration für die nahrungsaufnahme der ortsgebundenen meeresschnecke Crepidula fornicata L. (Gastropoda Prosobranchia). Zool Anz Bd 146:97–113
Werner B (1953) Über den nahrungserwerb der Calyptraeidae (Gastropoda Prosobranchia). Morphologie, histologie und funktion der am nahrungserwerb beteiligten organe. Helgol Wiss Meeresunters 4:260–315
Acknowledgements
We thank Mr. R. Silva for his help with the SEM samples. This research was founded by Fondecyt - Chile (Grant 1020171).
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Communicated by P. W. Sammarco, Chauvin
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Montiel, Y.A., Chaparro, O.R. & Segura, C.J. Changes in feeding mechanisms during early ontogeny in juveniles of Crepidula fecunda (Gastropoda, Calyptraeidae). Marine Biology 147, 1333–1342 (2005). https://doi.org/10.1007/s00227-005-0050-1
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DOI: https://doi.org/10.1007/s00227-005-0050-1