Limited effect of gizzard sand on consumption of the macrophyte Myriophyllum spicatum by the great pond snail Lymnaea stagnalis

Gross, Elisabeth; Lombardo, Paola

Limited effect of gizzard sand on consumption of the macrophyte Myriophyllum spicatum by the great pond snail Lymnaea stagnalis

Dateien

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Datum

2018

Autor:innen

Gross, Elisabeth

Lombardo, Paola

DOI (zitierfähiger Link)

https://doi.org/10.1007/s10750-016-2890-8

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Hydrobiologia. 2018, 812(1), pp. 131-145. ISSN 0018-8158. eISSN 1573-5117. Available under: doi: 10.1007/s10750-016-2890-8

Zusammenfassung

The sand stored in the gizzard of some freshwater snails should assist in the mechanical digestion of tough food, yet effects of gizzard sand on consumption of living macrophyte tissue are seldom addressed. We quantified the effects of gizzard sand both on consumption of plant tissue and on snail growth and reproduction with a cross-gradient, 28-day laboratory experiment. We offered apical shoot sections of Myriophyllum spicatum (initial ash content ~ 56%) or soft lettuce (ash content ~ 19%, as control) to Lymnaea stagnalis previously reared on sand or without sand. Gizzard sand had no effect on snail growth but sand-reared snails fed with lettuce initially produced more eggs than their no-sand counterparts. Snails fed M. spicatum exhibited stunted growth and produced only one small egg clutch. Shell height at time of first oviposition of M. spicatum-fed snails was two-thirds of that of lettuce-fed controls. Snails initially appeared to feed on periphyton and older, brownish M. spicatum leaflet tips, but later turned to midstem tissue. Fresh apices were not consumed. Gizzard sand had a limited effect on the ability of L. stagnalis to consume living M. spicatum, with apices likely defended chemically (polyphenols) and midstem tissue defended structurally (high ash content).

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

Submerged macrophytes, Freshwater gastropods, Herbivory, Antiherbivore defenses

Zitieren

ISO 690

GROSS, Elisabeth, Paola LOMBARDO, 2018. Limited effect of gizzard sand on consumption of the macrophyte Myriophyllum spicatum by the great pond snail Lymnaea stagnalis. In: Hydrobiologia. 2018, 812(1), pp. 131-145. ISSN 0018-8158. eISSN 1573-5117. Available under: doi: 10.1007/s10750-016-2890-8

BibTex

@article{Gross2018-05Limit-42016,
  year={2018},
  doi={10.1007/s10750-016-2890-8},
  title={Limited effect of gizzard sand on consumption of the macrophyte Myriophyllum spicatum by the great pond snail Lymnaea stagnalis},
  number={1},
  volume={812},
  issn={0018-8158},
  journal={Hydrobiologia},
  pages={131--145},
  author={Gross, Elisabeth and Lombardo, Paola}
}

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