Open AccessAllozyme variation and population structure of the very narrow endemic Seseli farrenyi (Apiaceae)
Author(s) -
LÓPEZPUJOL JORDI,
BOSCH MARIA,
SIMON JOAN,
BLANCHÉ CÉSAR
Publication year - 2002
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1046/j.1095-8339.2002.00021.x
Subject(s) - biology , apiaceae , ex situ conservation , genetic diversity , gene flow , endemism , genetic variation , population , genetic variability , botany , zoology , ecology , evolutionary biology , gene , genetics , endangered species , genotype , habitat , demography , sociology
Analyses have been made of allozyme variation of the narrow endemic species Seseli farrenyi Molero & J. Pujadas (Apiaceae), which has only three known populations in Catalonia with a total of around 2000 individuals. All three populations were sampled and subjected to starch gel electrophoresis. Nine enzymes were resolved and 14 loci were interpreted. We detected high values of polymorphism ( P = 83.3%, A = 3.0, H e = 0.297), far exceeding those expected for endemic species ( P = 26.3%, A = 1.39, H e = 0.063). Genetic diversity was greater within populations than among populations, and the value of gene flow was very high ( Nm = 5.85). Most loci showed deviations from Hardy– Weinberg equilibrium, possibly due to the presence of subpopulations. The main threats to this species are human activities (tourism, fires), while natural threats are minimal due to its high genetic diversity. Finally, we propose some conservation measures which include both in situ and ex situ strategies. © 2000 The Linnean Society of London, Botanical Journal of the Linnean Society , 2002, 138 , 305–314.