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ŠUMARSKI LIST 11-12/2011 str. 47     <-- 47 -->        PDF

N. Šprem, M. Piria, H. Novosel, T. Florijančić, B. Antunović, T. Treer: MORPHOLOGICALVARIABILITY... Šumarski list br. 11–12, CXXXV (2011), 575-583


Figure 3 Results of cluster analysis (usingTREE procedure)


Slika 3. Rezultat klaster analize (koristeći TREE postupak)


DISCUSSION
Population structure is similar to the cited in studies
in Europe,America and Oceania (Herrero &Fernandez
deLuco 2003) approximately 70% of individuals
were under 24 months old and 6 animals were over
72 months. Morphology data in adult animals can enable
one to determine if a specimen in question resembles a
pure wild boar or a hybridized animal with domestic
pigs, but data presented in this study supported the hypothesis
that the wild boar populations have hybridized
with domestic pigs. In some regions of Croatia we found
phenotypical variability of the wild boar population
based on hybridization, but results suggested that the
wild characters predominate. Results for some morphological
measurement were different than in others studies
(Martinoli et al. 1997;Herrero&Fernandezde
Luco 2003; Mayer & Lehr Brisbin 2006). For
example, TaL and HW were smaller, but EL was the
same compared to data presented byMayer &Lehr
Brisbin (2006).The data forTrHLwere smaller than
was shown by Martinoli et al. (1997). Data from this
study revealed that the CC, HL and BW was much
higher than fromHerrero &Fernandez deLuco
(2003). Some of these morphological measurements
supported the hypothesis that the wild boar population
has hybridized with domestic pig, and the same hypothesis
was given in similar studies (Martinoli et al.
1997; Herrero & Fernandez de Luco 2003). In
generally standard morphological analyzes did not show
clear area of separation in any morphological trait, but
on the other hand, RDAanalysis showed the connection
of sampling sites with some morphological trait.The re


– Diskusija
sults of cluster analysis using TREE procedure show
that East and Central populations are morphologically
very close and belong to one subpopulation, but the
West population belongs to another subpopulation. This
argument can explain on the basis of different habitat
and climate conditions.Western population is under the
influence of Mediterranean climate and mountain region
constitute a natural barrier between other populations.In
some respects this result also confirm hypothesis of the
existence of two European subpopulations, western and
central populations(Larson etal. 2005).Eigen values
were performed and we can be confirmed that body
shape analysis using multivariate statistical methods
may be useful in the evaluation of conformation and
other applications.When all parameters are analyzed, it
can be concluded that wild boar from Croatia present a
certain degree of variability. These results confirmed
that different morphotypes of wild boar are detectable
in some different regions of Croatia. These morpho-
types are differentiated on the basis of height and
length measurements and can be relevant only for older
animals. Presently the subpopulation is the accepted
way of giving formal recognition to these differences,
the origin of which may have been an adaptation to different
geographical situations.The average data values
presented here are slightly higher than those estimated
for other European wild boar populations (Pedone et
al. 1991; Ernhaft &Csányi 1995; Amici et al.
2010). However, it should be noted that a large number


of the studies reported by various authors from other
countries (Randi et al. 1987; Apollonio et al.