Does the consumption of pioneer-tree seeds from flooded forests by freshwater sardines affect seed germination?

Albuquerque, Bianca Weiss; Costa, Gilvan da Silva; Correa, Sandra Bibiana; Zuanon, Jansen; Piedade, Maria Teresa Fernandez

doi:10.1016/j.actao.2022.103850

Cited by 3 publications

(2 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Knowledge about ichthyocory is still scarce and concentrated mainly in areas of Neotropical floodplains (Anderson et al, 2009(Anderson et al, , 2011Gottsberger, 1978;Valencia, 2012;Weiss et al, 2016), with few studies carried out in igapó blackwater forests (Correa & Winemiller, 2014;Goulding et al, 1988;Piedade et al, 2006), which may underestimate the role of several fish species as seed dispersers. Both seed and fish traits influence the quality of the interaction and the probability of effective seed dispersal (Boedeltje et al, 2019;Correa, Costa-Pereira, et al, 2015;Weiss et al, 2022). Some manipulative feeding trials have addressed individual differences in the quality of seed dispersal by fish (e.g.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of fish assemblage as seed dispersers in Amazon oligotrophic flooded forests

et al. 2023

Self Cite

View full text Add to dashboard Cite

In tropical and highly diverse systems, Seed Dispersal Effectiveness (SDE) is a very useful approach to investigating the role of seed dispersers in one of the most important and complex phases of plants by analysing the quantitative (QC) and qualitative (QL) components of the seed dispersal process. Although fishes are recognized as an important guild of frugivores in flooded environments, we still know very little about the dispersal effectiveness performed by this group. Our study evaluated two quantitative subcomponents of effectiveness, where we used: (a) the volume of intact and crushed seeds found in the stomach and intestine of fish (QC1), and (b) the total number of tested and viable seeds (QC2). From these subcomponents, a two‐dimensional landscape of effectiveness was generated and a fish species was ranked according to the quantitative component of the SDE. Eight species of fish consumed 1054 seeds belonging to 16 plant species. Sphinctanthus striiflorus, Corynostylis pubescens, Connarus sp. and Piper sp., were the most abundant plant species in fish's diets, totalling 95% (N = 983) of the seeds consumed. We used a tetrazolium viability test protocol and about 678 (85%) of the 797 seeds tested were viable and 119 (14.7%) were unviable; the viability test was inconclusive for less than 1% of the seeds. Our findings showed that, as seen in other effectiveness studies with terrestrial vertebrate dispersers, fish species also have different degrees of effectiveness. Additionally, we pointed out that the fish species more specialized in the consumption of fruits and seeds were quantitatively more effective dispersers, while species with lower SDE corresponded to generalists that just occasionally consume seeds. We suggest that high‐diversity fish assemblages allow for greater complementarity in the seed dispersal interaction, which can potentially favour the recruitment of plant species via ichthyochory.

show abstract

Section: Discussionmentioning

confidence: 99%

Effectiveness of fish assemblage as seed dispersers in Amazon oligotrophic flooded forests

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moving from temperate grasslands to Amazonian flooded forests, Weiss et al (2024) evaluated the effectiveness of fish as seed dispersers. They studied both quantity and viability of seeds ingested by fish and found that fish that feed on fruits and seeds are more effective seed dispersers compared to generalists.…”

mentioning

confidence: 99%