Advanced   Register
XTBG OpenIR  > 2012年后新成立研究组  > 期刊论文

title: The relationship between defecation and feeding in nestling birds: observational and experimental evidence
author: Rui-chang Quan;  Huan Li;  Bo Wang;  Eben Goodale
Issued Date: 2015
Abstract: 

Background

Adult birds clean the nest by consuming or transporting feces, which is thought to be important in order to lower the levels of parasites, pathogens and predation at the nest. If nestlings were to defecate when parents were absent, however, feces could accumulate in the nest.

Results

To understand the mechanism by which nest sanitation is maintained, we studied the timing of defecation in nestling birds of common passerine species in southwest China. In 159 nests of 8 species at the nestling stage during 779 randomly timed observations, we never found fecal sacs present. Video recordings, totaling 455 h at five Pycnonotus jocosus nests in the field, showed almost all defecation after feedings, and only nestlings that were fed defecated. Six translocated P. jocosus nests were taken into captivity in order to manipulate the frequency of feeding. These nestlings defecated only after feeding, even when feeding intervals were extended to 60 and 120 min. The fecal sac weight also increased with extended feeding intervals, demonstrating a remarkable plasticity for nestlings to wait for feedings.

Conclusion

The evidence allows two major conclusions: 1) defecation in the nest occurs at a time that ensures nest sanitation, stimulated by feeding, rather than there being a set time of gut processing between feeding and excretion; 2) the strong plasticity in the timing of defecation and the possibility of negative repercussions (if defecation occurs when parents are absent) are important mechanisms underlying the efficiency of the feeding-defecation system.


Source: Frontiers in Zoology
Appears in Collections:2012年后新成立研究组_期刊论文

Files in This Item:

File SizeFormat
The relationship between defecation and feeding in nestling birds_ observational and experimental evidence.pdf1087KbAdobe PDFView  Download


全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Rui-chang Quan,Huan Li,Bo Wang,et al. The Relationship Between Defecation And Feeding In Nestling Birds: Observational And Experimental Evidence[J]. Frontiers In Zoology,2015,12(21).

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Rui-chang Quan]'s Articles
 [Huan Li]'s Articles
 [Bo Wang]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Rui-chang Quan]‘s Articles
 [Huan Li]‘s Articles
 [Bo Wang]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace