Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China

Population Genetic Structure of the Yangtze Finless Porpoise (Neophocaena phocaenoides asiaeorientalis): Implications for Management and Conservation

“…Since no animals were introduced from the lower reaches where the porpoises have higher genetic diversity, a very low level of genetic variation was detected at the same mtDNA control region (π = 0.0007 ± 0.0000002, h = 0.6010 ± 0.0029) (Xia et al, personal communication). The long-term viability of a population probably depends on the amount of genetic variability it retains and requires attempts to preserve a representative stock of this species (Li et al, 2002). To conserve a species, an effort should seek to contain 95% of the species' genetic diversity (Marshall and Brown, 1975).…”

Genetic diversity and structure analysis of the endangered plant speciesHorsfieldia hainanensisMerr. in China

“…It is commonly believed that low fertility, little genetic variation within species, weak competitiveness, poor adaptability, excessive logging and habitat destruction are the reasons for plant endangerment [28,29]. Williamson and Werth [30] pointed out that endangered species with narrow field distribution and abundant genetic diversity had not experienced a bottleneck effect, and inbreeding within the population might not necessarily lead to selfing depression; thus, it was likely that fragmentation of native habitats caused by geographical isolation and human disturbance was the cause of their being endangered.…”

Genetic diversity of Litsea szemaois, an endangered species endemic to China, detected by inter-simple sequence repeat (ISSR)

“…Population codes are the same as in Table 1. Hamrick & Godt, 1990;Falk & Holsinger, 1991;洪德元等, 1995;Li et al, 2002)。但 是也有研究报道表明有些特有种、狭域种甚至濒危 种也能保持较高水平的遗传多样性 (Richter et al, 1994;Ge et al, 1997;Kang et al, 2000;Zawko et al, 2001;Xue et al, 2004;宋卫华等, 2004)…”