EspinosaSantiagoGomezEtAl2015

Reference

Espinosa Gomez, F., Santiago Garcia, J., Gomez Rosales, S., Wallis, I.R., Chapman, C.A., Morales Mavil, J., Canales Espinosa, D., Hernandez Salazar, L. (2015) Howler Monkeys (Alouatta palliata mexicana) Produce Tannin-Binding Salivary Proteins. International Journal of Primatology, 36(6):1086-1100. (Scopus )

Abstract

Dietary tannins are ubiquitous in woody plants and may have serious negative effects on herbivores by inducing a loss of dietary protein and producing toxins if they are hydrolyzed in the gut. Many herbivorous mammals counter the negative effects of tannins through tannin-binding salivary proteins (TBSPs) that inactivate tannins by forming insoluble complexes and prevent them from interacting with other more valuable proteins. Howlers are the most folivorous New World primates and ingest foods with varying tannin content. We studied the presence of TBSPs in six wild mantled howlers (Alouatta palliata mexicana) immediately after capture and in captivity when fed on two diets composed of natural ingredients: a mixture of fruit and leaves or only leaves. Protein concentration was determined in whole saliva samples, followed by gel electrophoresis. We identified two protein bands of 17 and 25 kDa that have tannin-binding capacity. Although the monkeys ate almost twice as much condensed tannins in the leaf diet than in the fruits and leaves diet (7 vs. 4 g/d dry matter) the salivary protein concentration did not differ between the two diets (leaf diet: 3.29 ± SE 0.82 vs. fruit and leaves diet: 3.42 ± SE 0.62 mg/ml) and we found no additional protein bands in response to either diet. We suggest that the continuous expression of TBSPs is part of a dietary strategy that enables howlers to consume diets with variable tannin contents, thus partly explaining their dietary flexibility. Although the importance of salivary proteins to arboreal primates is broadly accepted, to our knowledge this is the first report of TBSPs in any Neotropical primate. © 2015, Springer Science+Business Media New York.

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@ARTICLE { EspinosaSantiagoGomezEtAl2015,
    AUTHOR = { Espinosa Gomez, F. and Santiago Garcia, J. and Gomez Rosales, S. and Wallis, I.R. and Chapman, C.A. and Morales Mavil, J. and Canales Espinosa, D. and Hernandez Salazar, L. },
    TITLE = { Howler Monkeys (Alouatta palliata mexicana) Produce Tannin-Binding Salivary Proteins },
    JOURNAL = { International Journal of Primatology },
    YEAR = { 2015 },
    VOLUME = { 36 },
    PAGES = { 1086-1100 },
    NUMBER = { 6 },
    NOTE = { cited By 0 },
    ABSTRACT = { Dietary tannins are ubiquitous in woody plants and may have serious negative effects on herbivores by inducing a loss of dietary protein and producing toxins if they are hydrolyzed in the gut. Many herbivorous mammals counter the negative effects of tannins through tannin-binding salivary proteins (TBSPs) that inactivate tannins by forming insoluble complexes and prevent them from interacting with other more valuable proteins. Howlers are the most folivorous New World primates and ingest foods with varying tannin content. We studied the presence of TBSPs in six wild mantled howlers (Alouatta palliata mexicana) immediately after capture and in captivity when fed on two diets composed of natural ingredients: a mixture of fruit and leaves or only leaves. Protein concentration was determined in whole saliva samples, followed by gel electrophoresis. We identified two protein bands of 17 and 25 kDa that have tannin-binding capacity. Although the monkeys ate almost twice as much condensed tannins in the leaf diet than in the fruits and leaves diet (7 vs. 4 g/d dry matter) the salivary protein concentration did not differ between the two diets (leaf diet: 3.29 ± SE 0.82 vs. fruit and leaves diet: 3.42 ± SE 0.62 mg/ml) and we found no additional protein bands in response to either diet. We suggest that the continuous expression of TBSPs is part of a dietary strategy that enables howlers to consume diets with variable tannin contents, thus partly explaining their dietary flexibility. Although the importance of salivary proteins to arboreal primates is broadly accepted, to our knowledge this is the first report of TBSPs in any Neotropical primate. © 2015, Springer Science+Business Media New York. },
    AUTHOR_KEYWORDS = { Condensed tannins; Mantled howler monkeys; Plant secondary metabolites; Saliva; SDS-PAGE; Tannins },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s10764-015-9879-4 },
    KEYWORDS = { Alouatta; Alouatta palliata; Alouatta palliata mexicana; Mammalia; Primates },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84953636041&partnerID=40&md5=838a6b964a89992151c866246b2cf565 },
}

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