Sequential vigilance is unpredictable in reproductive Black-necked Cranes

Yuhang Li; Le Yang; Yunchao Luo; Yiqian Wu; Zhongqiu Li

doi:10.1186/s40657-018-0137-2

Volume 9 Issue 1

Nov. 2019

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Abstract

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Avian Research > 2018 > 9(1): 44. > DOI: 10.1186/s40657-018-0137-2

Yuhang Li, Le Yang, Yunchao Luo, Yiqian Wu, Zhongqiu Li. 2018: Sequential vigilance is unpredictable in reproductive Black-necked Cranes. Avian Research, 9(1): 44. DOI: 10.1186/s40657-018-0137-2

Citation:

Yuhang Li, Le Yang, Yunchao Luo, Yiqian Wu, Zhongqiu Li. 2018: Sequential vigilance is unpredictable in reproductive Black-necked Cranes. Avian Research, 9(1): 44. DOI: 10.1186/s40657-018-0137-2

Citation:

Yuhang Li, Le Yang, Yunchao Luo, Yiqian Wu, Zhongqiu Li. 2018: Sequential vigilance is unpredictable in reproductive Black-necked Cranes. Avian Research, 9(1): 44. DOI: 10.1186/s40657-018-0137-2

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Sequential vigilance is unpredictable in reproductive Black-necked Cranes

Yuhang Li^{1, †},
Le Yang^{2, †},
Yunchao Luo¹,
Yiqian Wu¹,
Zhongqiu Li^1, , ,

1.
School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
2.
Tibet Plateau Institute of Biology, 19 Beijing West Road, Lhasa 850000, China

Funds:

the National Natural Science Foundation of China 31360141

the National Natural Science Foundation of China 31772470

the National Natural Science Foundation of China J1103512

the West Light Foundation of Chinese Academy of Sciences 2015

the Project of National Biodiversity Observation Network-Bird 2015-2018

More Information

Corresponding author:
Zhongqiu Li, lizq@nju.edu.cn
^†Yuhang Li and Le Yang contributed equally to this work
Received Date: 06 Jun 2018
Accepted Date: 05 Dec 2018
Available Online: 24 Apr 2022
Publish Date: 09 Dec 2018

Graphical Abstract

Abstract

Abstract

Background
Vigilance refers to the behavior of animals scanning their surroundings with a main purpose of antipredation. Whether vigilance can serve the function of anti-predation depends on its unpredictability,meaning instantaneous randomness,sequential randomness,and independence,the three assumptions from Pulliam model (J Theor Biol 38:419,1973). Here we tested two of these three assumptions in reproductive Black-necked Cranes (Grus nigricollis) in Tibetan Plateau: instantaneous randomness and sequential randomness.
Methods
Observations were carried out in July and September of 2014, July and August in 2017 in Selincuo National Nature Reserve,Tibet,with the help of focal sampling method. For instantaneous randomness,we used Kolmogorov–Smirnov test for its negative exponential distribution; for sequential randomness,we used Run test,correlation analysis,and generalized linear model to see if an inter-scan and its previous scan were correlated.
Results
Not similar to some recent studies,we did not find a significant predictable vigilance in this crane. Most inter-scan intervals (86/100,86.0%) passed negative exponential distribution test,meaning vigilance sequences with instantaneous randomness; most inter-scan intervals (91/100,91.0%) passed sequential random test,showing vigilance sequences were random organized.
Conclusion
Our results suggest that keeping a vigilance pattern with unpredictability is beneficial to the survival of the Black-necked Cranes,which are facing with both cruel natural environments and high predation risks.
- Black-necked Cranes,
- Instantaneous randomness,
- Sequential randomness

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Correction to: Avian Res (2018) 9:31

https://doi.org/10.1186/s40657-018-0123-8

Unfortunately, the original article (Fuchs and Zuccon 2018) contained some errors. The Tables 1, 2 and Additional file 1: Table S2 were displayed incorrectly. The correct tables can be found below.

Table 1. Details of the six specimens of Orthotomus rufceps from southern Vietnam (original label mention is Cochinchina) collected by Louis Rodolphe Germain and representing, to our knowledge, the only specimens deposited in natural history museums

Collector	Catalog number	Sex	Collection Date	Locality	Country
Germain L.R.	MNHN ZO 1866-573	Female	28 February 1864	'Cochinchina'	Vietnam
Germain L.R.	MNHN ZO 1882-738	Male		'Cochinchina'	Vietnam
Germain L.R.	MNHN ZO 1882-739	Female	21 April 1865	'Cochinchina'	Vietnam
Germain L.R.	MNHN ZO 1882-740	Female		'Cochinchina'	Vietnam
Germain L.R.	MNHN ZO 1882-742	Male	29 February 1864	'Cochinchina'	Vietnam
Germain L.R.	SMF 78404	Male		'Cochinchina'	Vietnam
The specimen in Senckenberg was previously cataloged at MNHN with the number MNHN ZO 1882-741; this specimen was not sequenced

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Table 2. Details of the nine specimens of Orthotomus sequenced as part of this study

Species	Collector	Catalog number	Collection date	Locality	Country
ruficeps	Germain L.R.	MNHN ZO 1866-573	28 February 1864	'Cochinchina'	Vietnam
ruficeps	Germain L.R.	MNHN ZO 1882-738		'Cochinchina'	Vietnam
ruficeps	Germain L.R.	MNHN ZO 1882-739	21 April 1865	'Cochinchina'	Vietnam
ruficeps	Germain L.R.	MNHN ZO 1882-740		'Cochinchina'	Vietnam
ruficeps	Germain L.R.	MNHN ZO 1882-742	29 February 1864	'Cochinchina'	Vietnam
atrogularis	Germain L.R.	MNHN ZO 1882-728	13 April 1867	'Saigon, Cochinchina'	Vietnam
atrogularis	J. Delacour/P. Jabouille	MNHN ZO 1929-1463	27 February 1928	Phu-Qui	Vietnam
atrogularis	J. Delacour/P. Jabouille	MNHN ZO 1939-913	25 January 1930	Hoi-Xuan	Vietnam
atrogularis	J. Roche/J. Thiney	MNHN ZO 1989-120	17 December 1986	Trang	Thailand

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Additional file

Additional file 1: Table S2. Measurement details for the specimens included in the biometric analyses.

The original article can be found online at https://doi.org/10.1186/s40657-018-0123-8.

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