File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Diet of the endangered big-headed turtle Platysternon megacephalum

TitleDiet of the endangered big-headed turtle Platysternon megacephalum
Authors
KeywordsAsian turtle crisis, China, Conservation, Functional ecology, Seed germination, Foraging ecology
Issue Date2016
Citation
PeerJ, 2016, v. 2016, n. 12, p. 10 How to Cite?
AbstractPopulations of the big-headed turtle Platysternon megacephalum are declining at unprecedented rates across most of its distribution in Southeast Asia owing to unsustainable harvest for pet, food, and Chinese medicine markets. Research on Asian freshwater turtles becomes more challenging as populations decline and basic ecological information is needed to inform conservation efforts. We examined fecal samples collected from P. megacephalum in five streams in Hong Kong to quantify the diet, and we compared the germination success of ingested and uningested seeds. Fruits, primarily of Machilus spp., were most frequently consumed, followed by insects, plant matter, crabs and mollusks. The niche breadth of adults was wider than that of juveniles. Diet composition differed between sites, which may be attributable to the history of illegal trapping at some sites, which reduced the proportion of larger and older individuals. Digestion of Machilus spp. fruits by P. megacephalum enhanced germination success of seeds by about 30%. However, most digested seeds are likely defecated in water in this highly aquatic species, which limits the potential benefit to dispersal. The results of our study can be used by conservation-related captive breeding programs to ensure a more optimal diet is provided to captive P. megacephalum.
Persistent Identifierhttp://hdl.handle.net/10722/256803

 

DC FieldValueLanguage
dc.contributor.authorSung, Yik Hei-
dc.contributor.authorHau, Billy C.H.-
dc.contributor.authorKarraker, Nancy E.-
dc.contributor.authorKarraker, Nancy E.-
dc.date.accessioned2018-07-24T08:57:58Z-
dc.date.available2018-07-24T08:57:58Z-
dc.date.issued2016-
dc.identifier.citationPeerJ, 2016, v. 2016, n. 12, p. 10-
dc.identifier.urihttp://hdl.handle.net/10722/256803-
dc.description.abstractPopulations of the big-headed turtle Platysternon megacephalum are declining at unprecedented rates across most of its distribution in Southeast Asia owing to unsustainable harvest for pet, food, and Chinese medicine markets. Research on Asian freshwater turtles becomes more challenging as populations decline and basic ecological information is needed to inform conservation efforts. We examined fecal samples collected from P. megacephalum in five streams in Hong Kong to quantify the diet, and we compared the germination success of ingested and uningested seeds. Fruits, primarily of Machilus spp., were most frequently consumed, followed by insects, plant matter, crabs and mollusks. The niche breadth of adults was wider than that of juveniles. Diet composition differed between sites, which may be attributable to the history of illegal trapping at some sites, which reduced the proportion of larger and older individuals. Digestion of Machilus spp. fruits by P. megacephalum enhanced germination success of seeds by about 30%. However, most digested seeds are likely defecated in water in this highly aquatic species, which limits the potential benefit to dispersal. The results of our study can be used by conservation-related captive breeding programs to ensure a more optimal diet is provided to captive P. megacephalum.-
dc.languageeng-
dc.relation.ispartofPeerJ-
dc.subjectAsian turtle crisis, China, Conservation, Functional ecology, Seed germination, Foraging ecology-
dc.titleDiet of the endangered big-headed turtle Platysternon megacephalum-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.7717/peerj.2784-
dc.identifier.scopuseid_2-s2.0-85003876260-
dc.identifier.volume2016-
dc.identifier.issue12-
dc.identifier.spage10-
dc.identifier.epage-
dc.identifier.eissn2167-8359-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats