Consumption rates of the periwinkle Littorina obtusata on the brown seaweed Ascophyllum nodosum


Autoria(s): Flöthe, Carla Rebecca; Molis, Markus
Data(s)

29/08/2013

Resumo

Anti-herbivory defenses support persistence of seaweeds. Little is known, however, about temporal dynamics in the induction of grazer-deterrent seaweed traits. In two induction experiments, consumption rates of the periwinkle Littorina obtusata (L.) on the brown seaweed Ascophyllum nodosum (L.) Le Jolis were measured in 3-d intervals. Changes in palatability of directly grazed A. nodosum were tested every 3 d with feeding assays using fresh and reconstituted seaweed pieces. Likewise, assays with fresh A. nodosum assessed changes in seaweed palatability in response to water-borne cues from nearby grazed conspecifics. Consumption rates of L. obtusata varied significantly during the 27-d induction phase of each experiment. Direct grazing by L. obtusata lowered palatability of fresh and reconstituted A. nodosum pieces to conspecific grazers after 15 d as well as after 6 and 12 d, respectively. After 12, 18, and 24 d, fresh A. nodosum located downstream of L. obtusata-grazed conspecifics was significantly less palatable than A. nodosum located downstream of ungrazed conspecifics. Changes in L. obtusata consumption rates and A. nodosum palatability during both induction experiments suggest temporal variation of grazer-deterrent responses, which may complicate experimental detection of inducible anti-herbivory defenses.

Formato

application/zip, 5 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.818645

doi:10.1594/PANGAEA.818645

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Flöthe, Carla Rebecca; Molis, Markus (2013): Temporal dynamics of inducible anti-herbivory defenses in the brown seaweed Ascophyllum nodosum (Phaeophyceae). Journal of Phycology, 49(3), 468-474, doi:10.1111/jpy.12059

Palavras-Chave #Consmpt; Consumption; Control; corr; Correction; Label; Mass; of Ascophyllum nodosum by Littorina obtusata, 10-12 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 13-15 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 1-3 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 16-18 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 19-21 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 22-24 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 25-27 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 4-6 days since start of induction; of Ascophyllum nodosum by Littorina obtusata, 7-9 days since start of induction; Replicate; Sample code/label; Start, Control assay; Start, Control autogenic control; Start, Treatment assay; Start, Treatment autogenic control; Stopp, Control assay; Stopp, Control autogenic control; Stopp, Treatment assay; Stopp, Treatment autogenic control; Treatment
Tipo

Dataset