File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Bite forces used by Japanese macaques (Macaca fuscata yakui) on Yakushima Island, Japan to open aphid-induced galls on Distylium racemosum (Hamamelidaceae)

TitleBite forces used by Japanese macaques (Macaca fuscata yakui) on Yakushima Island, Japan to open aphid-induced galls on Distylium racemosum (Hamamelidaceae)
Authors
Issue Date1995
PublisherBlackwell Publishing Ltd.
Citation
Journal of Zoology, 1995, v. 237 n. 1, p. 57-63 How to Cite?
AbstractJapanese macaques on Yakushima Island have been seen attempting to open thick, woody plant galls in order to eat aphids contained within them. We analysed a sample of galls and gall fragments with toothmarks and found that 22% were still intact indicating a failure to open them. These marks were examined and measured. Ten pits had a mean indentational area of 1.44 mm2 (S.D. 0.28 mm2), while 15 elongated scratches had a mean width of 1.26mm (S.D. 0.27 mm). The gall resembled a light wood in its mechanical properties and had a microhardness of 80.4MPa. Assuming that at least two marks were formed in any given bite, indentational analysis gave a mean estimate of bite forces of 232N (maximum 291 N) to produce pits and 255 N (maximum 487N) to produce scratches. These forces are consistent with, but at the high end of, limits predicted by anatomical analysis.
Persistent Identifierhttp://hdl.handle.net/10722/223998
ISSN
2015 Impact Factor: 1.819
2015 SCImago Journal Rankings: 1.032

 

DC FieldValueLanguage
dc.contributor.authorHill, DA-
dc.contributor.authorLucas, PW-
dc.contributor.authorCheng, PY-
dc.date.accessioned2016-03-18T04:37:14Z-
dc.date.available2016-03-18T04:37:14Z-
dc.date.issued1995-
dc.identifier.citationJournal of Zoology, 1995, v. 237 n. 1, p. 57-63-
dc.identifier.issn0952-8369-
dc.identifier.urihttp://hdl.handle.net/10722/223998-
dc.description.abstractJapanese macaques on Yakushima Island have been seen attempting to open thick, woody plant galls in order to eat aphids contained within them. We analysed a sample of galls and gall fragments with toothmarks and found that 22% were still intact indicating a failure to open them. These marks were examined and measured. Ten pits had a mean indentational area of 1.44 mm2 (S.D. 0.28 mm2), while 15 elongated scratches had a mean width of 1.26mm (S.D. 0.27 mm). The gall resembled a light wood in its mechanical properties and had a microhardness of 80.4MPa. Assuming that at least two marks were formed in any given bite, indentational analysis gave a mean estimate of bite forces of 232N (maximum 291 N) to produce pits and 255 N (maximum 487N) to produce scratches. These forces are consistent with, but at the high end of, limits predicted by anatomical analysis.-
dc.languageeng-
dc.publisherBlackwell Publishing Ltd. -
dc.relation.ispartofJournal of Zoology-
dc.rightsThe definitive version is available at www.blackwell-synergy.com-
dc.titleBite forces used by Japanese macaques (Macaca fuscata yakui) on Yakushima Island, Japan to open aphid-induced galls on Distylium racemosum (Hamamelidaceae)-
dc.typeArticle-
dc.identifier.emailLucas, PW: pwlucas@hkucc.hku.hk-
dc.identifier.doi10.1111/j.1469-7998.1995.tb02746.x-
dc.identifier.hkuros14708-
dc.identifier.volume237-
dc.identifier.issue1-
dc.identifier.spage57-
dc.identifier.epage63-
dc.publisher.placeUnited Kingdom-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats