Body Region Sampling Areas- and Phaneroptics-Associated Hair Fiber Phenotypes in Canarian Camel Versus Merino Sheep

Figures & data

Figure 1. Coat color phenotypes accepted within the Canarian camel breed standard (Fernández de Sierra and Fabelo Marrero 2017).

Table 1. Criteria for the classification of dromedary camel and sheep by age group.

Animal species	Group 1 Prepuber	Group 2 Sexually mature	Group 3 Reproductively senescent	Source of information
Dromedary camel	<3 years	3–15 years	>15 years	(Al-Qarawi et al. 2000, 2001)
Sheep	<6 months	6 months − 6 years	>6 years	(Mysterud, Coulson, and Stenseth 2002; Nieto et al. 2013)

Figure 2. Summary of the value of tolerance and VIF after multicollinearity analysis of physical-mechanical of Canarian camel hair and Merino sheep quality-related traits when clustering patterns are phaneroptics (a) and sampling site (b), respectively. Interpretation thumb rule: VIF ≥ 5 (highly correlated); 1 < VIF < 5 (moderately correlated); VIF = 1 (not correlated).

Figure 3. Canonical variable functions and their percentages of self-explained and cumulative variance.

Table 2. Canonical discriminant analysis efficiency parameters to determine the significance of each canonical discriminant function.

Phaneroptics				Sampling Site
Test functions	Canonical Correlations	Bartlett’s statistic	p-value	Test functions	Canonical Correlations	Bartlett’s statistic	p-value
1 through 15	0.4975	949.0281	<0.0001	1 through 15	0.9606	8778.8594	<0.0001
2 through 15	0.4412	720.5938	<0.0001	2 through 15	0.9106	5036.1988	<0.0001
3 through 15	0.3865	546.6064	<0.0001	3 through 15	0.7763	2454.5680	<0.0001
4 through 15	0.3157	416.6371	0.0018	4 through 15	0.4802	1105.9331	<0.0001
5 through 15	0.2859	332.2742	0.0777	5 through 15	0.3725	722.8758	<0.0001
6 through 15	0.2590	263.7639	0.4233	6 through 15	0.3053	504.6912	<0.0001
7 through 15	0.2496	207.9908	0.7856	7 through 15	0.2579	361.7887	<0.0001
8 through 15	0.2203	156.3157	0.9721	8 through 15	0.2410	261.2242	<0.0001
9 through 15	0.1947	116.3267	0.9968	9 through 15	0.1895	173.7717	<0.0001
10 through 15	0.1654	85.2779	0.9995	10 through 15	0.1690	120.3599	0.0015
11 through 15	0.1458	62.9845	0.9996	11 through 15	0.1426	78.0297	0.0588
12 through 15	0.1360	45.7177	0.9993	12 through 15	0.1267	48.0219	0.3131
13 through 15	0.1260	30.7250	0.9983	13 through 15	0.0804	24.3638	0.7553
14 through 15	0.1137	17.8753	0.9950	14 through 15	0.0759	14.8839	0.6699
15	0.0959	7.4209	0.9774	15	0.0664	6.4501	0.5969

Table 3. Results for the tests of equality of group means to test for difference in the means across sample groups once redundant variables have been removed.

Clustering criteria	Phaneroptics				Sampling site
Variable	Wilk’s Lambda	F	p-value	Rank	Variable	Wilk’s Lambda	F	p-value	Rank
large blob% (%)	0.810	6.029	<0.0001	1	CEM	0.211	248.150	<0.0001	1
light	0.869	3.886	<0.0001	2	large blob%	0.233	217.680	<0.0001	2
%<15um (%)	0.886	3.296	<0.0001	3	lightSD	0.416	93.201	<0.0001	3
minSD	0.888	3.233	<0.0001	4	baseD	0.418	92.174	<0.0001	4
CEM (um)	0.909	2.558	<0.0001	5	minSD	0.469	75.110	<0.0001	5
lightSD	0.911	2.518	<0.0001	6	%<15um	0.493	68.064	<0.0001	6
length staple (mm)	0.929	1.952	0.0016	7	length staple	0.518	61.679	<0.0001	7
sdD along 200um (um)	0.930	1.934	0.0018	8	spinF	0.541	56.128	<0.0001	8
baseD (um)	0.939	1.677	0.0125	9	numD	0.568	50.354	<0.0001	9
numD	0.941	1.610	0.0198	10	densSD	0.572	49.551	<0.0001	10
densSD	0.941	1.608	0.0201	11	light	0.594	45.315	<0.0001	11
SD Along Profile (um)	0.947	1.444	0.0572		SD Along Profile	0.629	39.053	<0.0001	12
maxSD	0.954	1.249	0.1671		sdD along 200um	0.662	33.815	<0.0001	13
spinF (um)	0.960	1.074	0.3604		fiFromTip	0.698	28.635	<0.0001	14
fiFromTip (mm)	0.963	0.979	0.5006		maxSD	0.810	15.530	<0.0001	15

Df1 = 31; Df2 = 796 (Clustering criterion: Phaneroptics); Df1 = 22; Df2 = 1458 (Clustering criterion: Sampling site); Df=degrees of freedom

Figure 4. Discriminant standardized coefficients for physical-mechanical hair/wool quality related traits in Canarian camel and Merino sheep in each canonical discriminant function. Each bar represents the relative weights (loadings) of each particular trait across the six significant discriminant functions evidenced by the discriminant canonical analysis.

Figure 5. Territorial map depicting the centroids of the different variables (physical-mechanical hair/wool quality related traits) considered in the discriminant canonical analyses.

Figure 6. Cladogram constructed from Mahalanobis distances across phaneroptic combinations of coat color and particularities, and eye color in Canarian camels.

Figure 7. Cladogram constructed from Mahalanobis distances across sampling sites and age groups in Canarian camels and Merino sheep.

Fernández de Sierra, G., and F. J. Fabelo Marrero. 2017. “El camello canario.” Lanzarote, Spain: Asociación de Criadores del Camello Canario. Aderlan.

 Google Scholar

Al-Qarawi, A. A., H. A. Abdel-Rahman, M. S. El-Belely, and S. A. El-Mougy. 2000. “Age-Related Changes in Plasma Testosterone Concentrations and Genital Organs Content of Bulk and Trace Elements in the Male Dromedary Camel.” Animal reproduction science 62 (4): 297–307.

 PubMed Web of Science ®Google Scholar

Al-Qarawi, A. A., H. A. Abdel-Rahman, M. S. El-Belely, and S. A. El-Mougy. 2001. “Intratesticular Morphometric, Cellular and Endocrine Changes Around the Pubertal Period in Dromedary Camels.” The Veterinary Journal 162 (3): 241–249.

 PubMed Web of Science ®Google Scholar

Mysterud, A., T. Coulson, and N. C. Stenseth. 2002. “The Role of Males in the Dynamics of Ungulate Populations.” The Journal of Animal Ecology 71 (6): 907–915.

 Web of Science ®Google Scholar

Nieto, C. R., M. B. Ferguson, C. A. Macleay, J. R. Briegel, G. B. Martin, and A. N. Thompson. 2013. “Selection for Superior Growth Advances the Onset of Puberty and Increases Reproductive Performance in Ewe Lambs.” animal 7 (6): 990–997.

 PubMed Web of Science ®Google Scholar

Data availability statement

The data that support the findings of this study are available from the corresponding author, F.J.N.G., upon reasonable request.