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  1. Article ; Online: Plant apparency drives leaf herbivory in seedling communities across four subtropical forests.

    Martini, Francesco / Aluthwattha, S Tharanga / Mammides, Christos / Armani, Mohammed / Goodale, Uromi Manage

    Oecologia

    2020  Volume 195, Issue 3, Page(s) 575–587

    Abstract: Insect herbivory in natural forests is of critical importance in forest regeneration and dynamics. Some hypotheses that have been proposed to explain variation in leaf consumption by herbivores focus on biotic interactions, while others emphasize the ... ...

    Abstract Insect herbivory in natural forests is of critical importance in forest regeneration and dynamics. Some hypotheses that have been proposed to explain variation in leaf consumption by herbivores focus on biotic interactions, while others emphasize the role of the abiotic environment. Here, we evaluated the relative importance of both biotic and abiotic factors in explaining leaf damage on seedlings. We measured the percentage of leaf damage in the understory seedling community of four subtropical forests, covering an elevation gradient from 400 to 1850 m asl. We used fine-scale abiotic (elevation, canopy openness, topography, soil fertility) and biotic (seedling height and number of leaves, neighborhood composition) variables to determine both direct and indirect relationships using linear mixed models and structural equation modeling. We also explored the consistency of our results across the four forests. Taller seedlings experienced higher herbivore damage. Herbivory increased at higher elevations and in areas with higher light availability in one forest, but not in the other three. We found no evidence supporting the effects of biotic interactions on herbivory. Our results, at all levels of analysis, are consistent with the plant apparency theory, which posits that more apparent plants suffer greater attack. We did not find support for hypotheses stressing the role of neighborhood composition on herbivory. Similarly, the abiotic environment does not seem to influence herbivory significantly. We argue that plant apparency, rather than other biotic and abiotic factors, may be the most important predictor of leaf damage in the seedling communities of subtropical forests.
    MeSH term(s) Animals ; Forests ; Herbivory ; Plant Leaves ; Plants ; Seedlings ; Trees
    Language English
    Publishing date 2020-11-29
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 123369-5
    ISSN 1432-1939 ; 0029-8549
    ISSN (online) 1432-1939
    ISSN 0029-8549
    DOI 10.1007/s00442-020-04804-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Plant apparency drives leaf herbivory in seedling communities across four subtropical forests

    Martini, Francesco / Aluthwattha, S. Tharanga / Mammides, Christos / Armani, Mohammed / Goodale, Uromi Manage

    Oecologia. 2021 Mar., v. 195, no. 3

    2021  

    Abstract: Insect herbivory in natural forests is of critical importance in forest regeneration and dynamics. Some hypotheses that have been proposed to explain variation in leaf consumption by herbivores focus on biotic interactions, while others emphasize the ... ...

    Abstract Insect herbivory in natural forests is of critical importance in forest regeneration and dynamics. Some hypotheses that have been proposed to explain variation in leaf consumption by herbivores focus on biotic interactions, while others emphasize the role of the abiotic environment. Here, we evaluated the relative importance of both biotic and abiotic factors in explaining leaf damage on seedlings. We measured the percentage of leaf damage in the understory seedling community of four subtropical forests, covering an elevation gradient from 400 to 1850 m asl. We used fine-scale abiotic (elevation, canopy openness, topography, soil fertility) and biotic (seedling height and number of leaves, neighborhood composition) variables to determine both direct and indirect relationships using linear mixed models and structural equation modeling. We also explored the consistency of our results across the four forests. Taller seedlings experienced higher herbivore damage. Herbivory increased at higher elevations and in areas with higher light availability in one forest, but not in the other three. We found no evidence supporting the effects of biotic interactions on herbivory. Our results, at all levels of analysis, are consistent with the plant apparency theory, which posits that more apparent plants suffer greater attack. We did not find support for hypotheses stressing the role of neighborhood composition on herbivory. Similarly, the abiotic environment does not seem to influence herbivory significantly. We argue that plant apparency, rather than other biotic and abiotic factors, may be the most important predictor of leaf damage in the seedling communities of subtropical forests.
    Keywords altitude ; canopy ; equations ; forest regeneration ; herbivores ; insects ; leaves ; seedlings ; soil fertility ; understory
    Language English
    Dates of publication 2021-03
    Size p. 575-587.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 123369-5
    ISSN 1432-1939 ; 0029-8549
    ISSN (online) 1432-1939
    ISSN 0029-8549
    DOI 10.1007/s00442-020-04804-8
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 70/109: Show issues

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  3. Article ; Online: Scale-dependent contribution of host-specificity and environmental factors to wood-boring longhorn beetle community assemblage in SW China.

    Luo, Fang / Meng, Ling-Zeng / Aluthwattha, S Tharanga / Lin, Mei-Ying / Weigel, Andreas / Zhang, Wen-Fu / Qi, Jin-Hua / Chen, Jin

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 5100

    Abstract: Longhorn beetles are extremely rich wood-boring insects possessing larvae that feed on the xylem of trees and/or lianas, which have detrimental effects on plants; in turn, the hosting plants may play a fundamental role in shaping the longhorn beetle ... ...

    Abstract Longhorn beetles are extremely rich wood-boring insects possessing larvae that feed on the xylem of trees and/or lianas, which have detrimental effects on plants; in turn, the hosting plants may play a fundamental role in shaping the longhorn beetle community assemblage. However, factors determining the community assemblage of wood-boring longhorn beetles, particularly along the multiple spatial scales is still in need of further exploration. In this study, we designed an experiment across several spatial scales (from local to macro scales) from tropical to temperate climate gradients in Yunnan province, southwest China to examine to what extend the attributes of host-specificity is shaping the community assemblage along different spatial scales. This study concludes that (1) the wood-boring longhorn beetles showed attributes of host-specificity to a certain degree at the community level, (2) biotic (host plant specificity) and abiotic (climatic gradients) factors jointly shaped community composition of this species along the multiple spatial scales, (3) biotic interactions have a prominent effect on the community composition of this species at local-scale while macroclimatic gradients impose the major control on it at macro-scale. Thus, this study highlights the significance of host specificity in affecting the wood-boring longhorn beetle community assemblage, particularly at local scales.
    MeSH term(s) Animals ; China ; Coleoptera/physiology ; Host Specificity/physiology ; Phylogeny ; Population Dynamics ; Seasons ; Statistics, Nonparametric ; Temperature ; Trees/genetics ; Tropical Climate ; Wood
    Language English
    Publishing date 2021-03-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-84511-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Does spatial variation in predation pressure modulate selection for aposematism?

    Aluthwattha, S Tharanga / Harrison, Rhett D / Ranawana, Kithsiri B / Xu, Cheng / Lai, Ren / Chen, Jin

    Ecology and evolution

    2017  Volume 7, Issue 18, Page(s) 7560–7572

    Abstract: It is widely believed that aposematic signals should be conspicuous, but in nature, they vary from highly conspicuous to near cryptic. Current theory, including the honest signal or trade-off hypotheses of the toxicity-conspicuousness relationship, ... ...

    Abstract It is widely believed that aposematic signals should be conspicuous, but in nature, they vary from highly conspicuous to near cryptic. Current theory, including the honest signal or trade-off hypotheses of the toxicity-conspicuousness relationship, cannot explain why adequately toxic species vary substantially in their conspicuousness. Through a study of similarly toxic Danainae (Nymphalidae) butterflies and their mimics that vary remarkably in their conspicuousness, we show that the benefits of conspicuousness vary along a gradient of predation pressure. Highly conspicuous butterflies experienced lower avian attack rates when background predation pressure was low, but attack rates increased rapidly as background predation pressure increased. Conversely, the least conspicuous butterflies experienced higher attack rates at low predation pressures, but at high predation pressures, they appeared to benefit from crypsis. Attack rates of intermediately conspicuous butterflies remained moderate and constant along the predation pressure gradient. Mimics had a similar pattern but higher attack rates than their models and mimics tended to imitate the signal of less attacked model species along the predation pressure gradient. Predation pressure modulated signal fitness provides a possible mechanism for the maintenance of variation in conspicuousness of aposematic signals, as well as the initial survival of conspicuous signals in cryptic populations in the process of aposematic signal evolution, and an alternative explanation for the evolutionary gain and loss of mimicry.
    Language English
    Publishing date 2017-08-15
    Publishing country England
    Document type Journal Article
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.3221
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Scale-dependent contribution of host-specificity and environmental factors to wood-boring longhorn beetle community assemblage in SW China

    Fang Luo / Ling-Zeng Meng / S. Tharanga Aluthwattha / Mei-Ying Lin / Andreas Weigel / Wen-Fu Zhang / Jin-Hua Qi / Jin Chen

    Scientific Reports, Vol 11, Iss 1, Pp 1-

    2021  Volume 10

    Abstract: Abstract Longhorn beetles are extremely rich wood-boring insects possessing larvae that feed on the xylem of trees and/or lianas, which have detrimental effects on plants; in turn, the hosting plants may play a fundamental role in shaping the longhorn ... ...

    Abstract Abstract Longhorn beetles are extremely rich wood-boring insects possessing larvae that feed on the xylem of trees and/or lianas, which have detrimental effects on plants; in turn, the hosting plants may play a fundamental role in shaping the longhorn beetle community assemblage. However, factors determining the community assemblage of wood-boring longhorn beetles, particularly along the multiple spatial scales is still in need of further exploration. In this study, we designed an experiment across several spatial scales (from local to macro scales) from tropical to temperate climate gradients in Yunnan province, southwest China to examine to what extend the attributes of host-specificity is shaping the community assemblage along different spatial scales. This study concludes that (1) the wood-boring longhorn beetles showed attributes of host-specificity to a certain degree at the community level, (2) biotic (host plant specificity) and abiotic (climatic gradients) factors jointly shaped community composition of this species along the multiple spatial scales, (3) biotic interactions have a prominent effect on the community composition of this species at local-scale while macroclimatic gradients impose the major control on it at macro-scale. Thus, this study highlights the significance of host specificity in affecting the wood-boring longhorn beetle community assemblage, particularly at local scales.
    Keywords Medicine ; R ; Science ; Q
    Subject code 580
    Language English
    Publishing date 2021-03-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Article ; Online: Does spatial variation in predation pressure modulate selection for aposematism?

    S. Tharanga Aluthwattha / Rhett D. Harrison / Kithsiri B. Ranawana / Cheng Xu / Ren Lai / Jin Chen

    Ecology and Evolution, Vol 7, Iss 18, Pp 7560-

    2017  Volume 7572

    Abstract: Abstract It is widely believed that aposematic signals should be conspicuous, but in nature, they vary from highly conspicuous to near cryptic. Current theory, including the honest signal or trade‐off hypotheses of the toxicity–conspicuousness ... ...

    Abstract Abstract It is widely believed that aposematic signals should be conspicuous, but in nature, they vary from highly conspicuous to near cryptic. Current theory, including the honest signal or trade‐off hypotheses of the toxicity–conspicuousness relationship, cannot explain why adequately toxic species vary substantially in their conspicuousness. Through a study of similarly toxic Danainae (Nymphalidae) butterflies and their mimics that vary remarkably in their conspicuousness, we show that the benefits of conspicuousness vary along a gradient of predation pressure. Highly conspicuous butterflies experienced lower avian attack rates when background predation pressure was low, but attack rates increased rapidly as background predation pressure increased. Conversely, the least conspicuous butterflies experienced higher attack rates at low predation pressures, but at high predation pressures, they appeared to benefit from crypsis. Attack rates of intermediately conspicuous butterflies remained moderate and constant along the predation pressure gradient. Mimics had a similar pattern but higher attack rates than their models and mimics tended to imitate the signal of less attacked model species along the predation pressure gradient. Predation pressure modulated signal fitness provides a possible mechanism for the maintenance of variation in conspicuousness of aposematic signals, as well as the initial survival of conspicuous signals in cryptic populations in the process of aposematic signal evolution, and an alternative explanation for the evolutionary gain and loss of mimicry.
    Keywords conspicuousness ; Danainae ; fitness ; mimicry ; toxicity ; warning signals ; Ecology ; QH540-549.5
    Subject code 590
    Language English
    Publishing date 2017-09-01T00:00:00Z
    Publisher Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  7. Article: Multigene Phylogeny Reveals

    Konta, Sirinapa / Hyde, Kevin D / Eungwanichayapant, Prapassorn D / Karunarathna, Samantha C / Samarakoon, Milan C / Xu, Jianchu / Dauner, Lucas A P / Aluthwattha, Sasith Tharanga / Lumyong, Saisamorn / Tibpromma, Saowaluck

    Life (Basel, Switzerland)

    2021  Volume 11, Issue 6

    Abstract: During our investigation of palm fungi in Thailand, two interesting taxa ... ...

    Abstract During our investigation of palm fungi in Thailand, two interesting taxa from
    Language English
    Publishing date 2021-05-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662250-6
    ISSN 2075-1729
    ISSN 2075-1729
    DOI 10.3390/life11060486
    Database MEDical Literature Analysis and Retrieval System OnLINE

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