Global patterns in seed germination after ingestion by mammals

Torres, Diego A.; Castaño, John Harold; Carranza-Quiceno, Jaime A.

doi:10.1111/mam.12195

Cited by 13 publications

(21 citation statements)

References 58 publications

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“…After gut passage, the germination rate of seeds was not different from that of uningested seeds for A. mangostanus , C. album and P. oleracea . This was also in agreement with the general pattern after their passage through the gut of the family Cervidae, with non-significant lower seed germination rate (Torres et al, 2020). After passing the gut, seed recovery and germination rate decreased for most species.…”

Section: Discussionsupporting

confidence: 90%

“…In the transfer phase, mastication and gut passage affect seed germination and determine the quality of seed dispersal (Baltzinger et al, 2019). According to a recent meta-analysis study, the effects of gut passage on seed germination varied among animal species (Torres et al, 2020). Also, the seed germination rates after gut passage differ according to ingested plant species (Mancilla-Leytón et al, 2011, 2013; Torres et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…According to a recent meta-analysis study, the effects of gut passage on seed germination varied among animal species (Torres et al, 2020). Also, the seed germination rates after gut passage differ according to ingested plant species (Mancilla-Leytón et al, 2011, 2013; Torres et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Seed recovery and germination rate after gut passage by Korean water deer (Hydropotes inermis argyropus)

Lee

Shin²,

Ahn

et al. 2021

Seed Sci. Res.

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Large herbivores can disperse seeds over long distances through endozoochory. The Korean water deer (Hydropotes inermis argyropus), an internationally vulnerable species but locally considered a vermin, is a potential endozoochorous seed dispersal vector. In this study, feeding experiments were conducted to test the efficiency of seed dispersal through gut ingestion by the Korean water deer, its temporal pattern and the effect of gut passage on seed recovery and germination rate. Eight plant species, including species that formerly germinated from its faeces, were used to feed three Korean water deer. Once the deer had consumed all the provided seeds, their faeces were collected after 24, 48, 72 and 96 h. The collected faeces were air-dried, and the number of seeds retrieved from the faeces was counted every 24 h (0–24, 24–48, 48–72 and 72–96 h). Among the eight plant species, six species were retrieved with intact seeds. Panicum bisulcatum had the highest recovery rate of 33.7%, followed by Amaranthus mangostanus (24.5%) and Chenopodium album (14.4%). Most of the seeds were recovered within the 24–48 h time interval. Germination tests were conducted on the ingested and uningested seeds for the four species which had a sufficient recovery rate. The effects of gut passage on seed germination differed according to plant species. The germination rate substantially decreased after gut passage. The results suggest that the Korean water deer can disperse seeds, potentially over long distances albeit at a high cost of low seed recovery and germination rate.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Seed recovery and germination rate after gut passage by Korean water deer (Hydropotes inermis argyropus)

Lee

Shin²,

Ahn

et al. 2021

Seed Sci. Res.

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“…In a global study, it has been proposed that mammals have a positive effect as enhancers of seed germination, although some groups, such as rodents, cause low seed germination and high mortality after ingestion. Particularly for Fabaceae seeds, mammals do not have a significant effect on germination (except in the case of Primates; Torres et al, 2020). In contrast to this general study, we found that the quality of seed treatment by D. patagonum , the rodent of our study, was similar in its high seed recovery to L. gymnocercus , and similar in its high seed germination to L. guanicoe .…”

Section: Discussionmentioning

confidence: 99%

Filling gaps in the seed dispersal effectiveness model forProsopis flexuosa: quality of seed treatment in the digestive tract of native animals

et al. 2020

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For endozoochorous species, the quality component of seed dispersal effectiveness depends in part on the treatment seeds receive in the animal's gut. Covering a variety of taxa, diet, digestion system and body size of Prosopis flexuosa seed dispersers, we analysed differences among species in (1) mean retention time of ingested seeds, (2) recovery of viable seeds, (3) seed germination in comparison with seeds collected from trees and (4) germination of seeds after two different periods of retention in the gut. Feeding experiments were conducted with captive individuals of Dolichotis patagonum, Lycalopex gymnocercus, Rhea americana, Chelonoidis chilensis and Lama guanicoe. On the first day, we provided them with fruits containing controlled amounts of seed, and on the subsequent days, we collected faeces in order to recover seeds. We performed germination and viability tests on seeds coming from faeces and collected from trees. The results showed differences among species in the mean retention time of seeds. Chelonoidis chilensis had the longest mean retention time, but its effect on seed recovery and germination was similar to that of the other species, except for L. guanicoe, which showed the lowest seed recovery. When scarification and promotion of seed germination were considered, herbivorous mammals and tortoises (L. guanicoe, D. patagonum and C. chilensis) were the ones increasing germinability, whereas R. americana and L. gymnocercus did not significantly increase final seed germination percentage, which was similar to that for seeds collected from trees. P. flexuosa seeds receive a variety of treatments from endozoochorous dispersers, which might result in an overall fitness benefit for a plant living in unpredictable environments.

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“…Biodiversity is essential to maintain Ecosystem Services (ES) (Cardinale et al 2012), and mammals are particularly important providers of ES as they comprise a highly diversified group that play key and disproportionate roles in ecosystems (Davidson et al 2012, Sarasola et al 2016, from pollination (Ratto et al 2018) and seed dispersal (Torres et al 2020) to top-down population control by predators (Ripple et al 2014) and soil engineering (Villarreal et al 2008, Davidson et al 2012, Villar et al 2020.…”

Section: Introductionmentioning

confidence: 99%

Historical survey of research related to fire management and fauna conservation in the world and in Brazil

2021

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Fire is a key ecological factor affecting biodiversity structure and composition. Fires' effects on biodiversity can be beneficial or harmful depending on how, where, when, and why they occur. The impacts of fire on fauna vary according to species ecology and the fire regime. To understand the research effort relating fire, fauna, and mammals, we surveyed papers published in World and in Brazil. Only 5% of the publications between 1970 and 2019 with fire subject dealt with fauna and 0.5% with mammal. For Brazil, we obtained 7% of papers for fauna and 3% for mammal. The Brazilian Biome with more papers was Cerrado, followed by Atlantic Forest, Amazon, Pampas, Caatinga and Pantanal. The United States of America and Australia stand out as protagonists in their continents with the largest papers number. The volume of research is related to investment in Research and Development and to occurrence of fires. The slope of temporal trend shows the terms related to wildfire have more papers than prescribed burn and there is less interest in fauna and mammal research. It is necessary to form research groups with these themes as research lines and intensify research relating fire ecology and mammals. There is yet no unified understanding of how fire may influence animal diversity and how it influences the vegetative structure and subsequently the resources which wildlife rely on. We consider this information is essential to establish efficient conservation policies.

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Global patterns in seed germination after ingestion by mammals

Cited by 13 publications

References 58 publications

Seed recovery and germination rate after gut passage by Korean water deer (Hydropotes inermis argyropus)

Seed recovery and germination rate after gut passage by Korean water deer (Hydropotes inermis argyropus)

Filling gaps in the seed dispersal effectiveness model forProsopis flexuosa: quality of seed treatment in the digestive tract of native animals

Historical survey of research related to fire management and fauna conservation in the world and in Brazil

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