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Table 3: ISSR dataset: three-level analysis of rnolecular variance (AMOVA). Groups
for three-level AMOVA were defined a priori (SAS vs SCR, or SCR, Alboran sea and
Siculo-Tunisian strait), either inferred according to PCoA (Principal coordinate
Analysis) and rnodel-based clustering analyses. d.f.: degrees offreedorn, SS: surn of
squares, var. cornp.: variance cornponent, %var: percentage ofvariation. **p <0.01,
***p< 0.001
Source of variation d.f. ss Var. %var <!J-statistics
comp.
SAS (Spain, Africa, Sicily) vs SCR (sardinian-Corsican region)
Among groups 238.461 2.101 21.07 <I>cT=
0.211 ***
Among populations within 26 638.136 2.542 25.49 <.Dsc =
groups 0.330***
Within populations 185 985.901 5.329 53.44 <.DsT=
0.466***
Alboran sea, Siculo-Tunisian strait, Sardinian-Corsican region
Among groups 2 257.173 1.829 18.80 <!JeT=
0.188***
Among populations within 25 619.424 2.570 26.42 <l>sc =
groups 0.325***
Within populations 185 985.901 5.329 54.78 <l>sT =
0.452***
Cluster A, cluster B, cluster C
Among groups 2 451.701 2.971 30.14 <I>cT=
0.301 ***
Among populations within 25 424.826 1.557 15.80 <.Dsc =
groups 0.226***
Within populations 185 985.901 5.329 54.06 <.DsT=
0.459***
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Gìan Luca Dedola: ANALISI DELLA VARIABILITÀ GENETICA DI PATELLA FéRRUGINEA, PATEL-LA UL l'SSIPONENSIS (MOLLUSCA: GASTROPODA) E PINNA
NOBILIS (MOLLUSCA: BIVALVIA): lLCONTRJBUTO DEl DATI MOLECOLARI ALLA CONSERVAZIONE DI SPECIE MINACCIATE· Tesi di douorato in Scienze
della natura e delle sue risorse • indiri7.zo BK>logi.a Ambientale, Università degli Studi di Sassarl
