Apport de la morphométrie géométrique dans la lutte contre &lt;i&gt;Rhipicephalus (Boophilus) microplus&lt;/i&gt; (Canestrini, 1888) sur le couloir de transhumance Ivoiro-Burkinabé

Diaha-Kouame, Amenan Claude Aimée; Tian-Bi, Tah Yves Nathan; Yao, Koffi Clément; Achi, Yaba Louise; Dupraz, Marlène; Kouakou, Koffi Eugène; Dujardin, Jean

doi:10.4314/ijbcs.v11i6.7

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…Furthermore, they make an important contribution to the protein consumption of smallholder households [ 7 ]. In West Africa, sheep populations are raised under harsh and diverse ecological conditions, which may have led to the evolution of diversified adaptive traits for their survival [ 2 , 8 ]. This valuable diversity of livestock is increasingly exposed to socio-economic and ecological changes that threaten their genetic integrity.…”

Section: Introductionmentioning

confidence: 99%

Morphological variability within the indigenous sheep population of Benin

et al. 2021

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Knowledge of both the genetic diversity and geographical distribution of animal genetic resources is a prerequisite for their sustainable utilization, improvement and conservation. The present study was undertaken to explore the current morphological variability within the sheep population in Benin as a prelude for their molecular characterization. From November 2018 to February 2020, 25 quantitative linear body measurements and 5 qualitative physical traits were recorded on 1240 adult ewes from the 10 phytogeographic zones that comprise the three vegetation zones of Benin. Fourteen morphological indices were calculated based on the linear body measurements. The collected data were first analyzed using multiple comparisons of least-square means (LSmeans), followed by generalized linear model (GLM) procedures, to explore the relationships among the measured morphometric traits and the 10 phytogeographic zones. Next, the presence of any genetic sub-populations was examined using multivariate analytical methods, including canonical discriminant analysis (CDA) and ascending hierarchical clustering (AHC). Univariate analyses indicated that all quantitative linear body measurements varied significantly (P<0.05) across the phytogeographic zones. The highest values (LSmean± standard error) of withers height (68.3±0.47 cm), sternum height (46.0±0.35 cm), and rump height (68.8±0.47 cm) were recorded in the Mekrou-Pendjari zone, the drier phytogeographic zone in the North, whereas the lowest values, 49.2±0.34, 25.9±0.26, and 52.0±0.35 cm, respectively, were recorded in the Pobe zone in the South. Multivariate analyses revealed the prevalence of four distinct sheep sub-populations in Benin. The sub-population from the South could be assimilated to the short-legged and that from the North to the West African long-legged sheep. The two other sub-populations were intermediate and closer to the crossbreeds or another short-legged sub-breed. The proportion of individuals correctly classified in their group of origin was approximately 74%. These results uncovered a spatial morphological variation in the Beninese sheep population along a South-North phytogeographic gradient.

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Section: Introductionmentioning

confidence: 99%

Morphological variability within the indigenous sheep population of Benin

et al. 2021

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“…Djallonké sheep are one of the local breeds of West Africa that play a major role in the maintenance of rural populations living and of major cultural importance due to their traditional use in rites and celebrations (OCDE/CEDEAO (2008). The Djallonké sheep genetic resources in West Africa possess important adaptive traits which make them to cope with harsh agro-pastoral production systems such as lack of quality fodder and disease mainly Trypanosomiasis and ticks (Ammar, 2013;Touré et al, 2014;Acapovi-Yao et al, 2016;Biguezoton, 2017;Diaha-Kouamé et al, 2018). However, the genetic diversity exists between and within breeds which can provide the raw materials for breed improvements and for the adaptation of the populations to changing environments and changing demands (FAO, 2015).…”

Section: Introductionmentioning

confidence: 99%

Primary morphological characterization of West African dwarf (Djallonk) ewes from Cte dIvoire based on qualitative and quantitative traits

Edouard¹,

Severin²,

Cyrille³

et al. 2019

Int. J. Genet. Mol. Biol.

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Phenotypic characterization is used to identify and document diversity within and between distinct breeds, based on their observable attributes. Study to assess the body characteristics and variability of 204 Djallonké (West African dwarf) ewes was conducted in three agro-ecological zones (central, western and northern) of Côte d'Ivoire, from November 2016 to April 2017. Animals were described using visual appreciation of the body hair coat (colour type and pattern), hair length, ear orientation, tail type and the facial (head) profile. The linear body measurements, such as ear and tail length, muzzle length and width, height at wither, chest depth, and chest girth were also described. The data collected were subjected to principal component (PCA) and discriminant analysis. Results showed that the most common Djallonké ewes had erected ear (87.25%), thin tail and straight face. The dominant colour pattern of the body hair coat was patchy (64.22%) followed by plain (32.84%) and spotted (2.94%). The agro-ecological zone had a significant (p˂0.01) effect on some linear body measurements (muzzle length, ear length and height wither). Based on PCA performed with all the above morphological variabilities, we were able to segregate the Djallonké ewes' into three clusters (I, II and III). Discriminant analysis revealed that 76.27% sheep of cluster I, 92.80% sheep of cluster II and 90% sheep of cluster III were correctly classified in their original cluster. This result indicated that Ivorian Djallonké sheep population comprises of three well characterized morphological types of animals. This information could constitute a basis for further characterization and development of conservation strategies for Djallonké sheep breeding in Côte d'Ivoire.

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“…Against this background, geometric morphometrics can be useful [ 13 ]. This morphological approach is based on quantitative rather than qualitative traits, and its relevance has been demonstrated on numerous occasions, including in chigger mites [ 14 ] or ticks [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Intraspecific sensilla dimorphism in Ascoschoengastia indica (Prostigmata, Trombiculidae)

Wulandhari,

Charoennitiwat,

Samung

et al. 2024

Heliyon

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Apport de la morphométrie géométrique dans la lutte contre <i>Rhipicephalus (Boophilus) microplus</i> (Canestrini, 1888) sur le couloir de transhumance Ivoiro-Burkinabé

Cited by 6 publications

References 20 publications

Morphological variability within the indigenous sheep population of Benin

Morphological variability within the indigenous sheep population of Benin

Primary morphological characterization of West African dwarf (Djallonk) ewes from Cte dIvoire based on qualitative and quantitative traits

Intraspecific sensilla dimorphism in Ascoschoengastia indica (Prostigmata, Trombiculidae)

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