Conservation Biology of Lycaenidae (Butterflies) - IUCN
Conservation Biology of Lycaenidae (Butterflies) - IUCN
Conservation Biology of Lycaenidae (Butterflies) - IUCN
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Overview <strong>of</strong> problems in Japan<br />
Toshiya HIROWATARI<br />
Entomological Laboratory, College <strong>of</strong> Agriculture, University <strong>of</strong> Osaka Prefecture, Sakai, Osaka, 591 Japan<br />
In Japan, there are about 240 resident butterfly species which<br />
comprise palaearctic and oriental faunal elements. Fortunately,<br />
none <strong>of</strong> them has been rendered completely extinct but many<br />
local butterfly colonies seem to have been totally eradicated.<br />
The first legislation to protect butterflies as 'Tennen<br />
Kinenbutu' or 'Natural monuments' was promulgated by the<br />
national government in 1932 for Panchala ganesa (<strong>Lycaenidae</strong>,<br />
Arhopalini) in Nara City. Until now, a total <strong>of</strong> 37 species have<br />
been designated as 'Tennen Kinenbutu' by the national and<br />
local governments. However, in some cases, legislation for the<br />
prohibition <strong>of</strong> collecting without any effective measures for<br />
conservation seems to have been ineffective, especially when a<br />
taxon is designated as a protected species rather than as a local<br />
population with a definable habitat or biotype. In fact, the Nara<br />
population <strong>of</strong> P. ganesa seems to have become extinct without<br />
any precise records because collectors lost interest in studying<br />
protected species. Another case is that <strong>of</strong> Shijimia moorei<br />
(Leech) (<strong>Lycaenidae</strong>, Polyommatini). This species had been<br />
known to occur in east Asia in places such as China and Taiwan.<br />
It was not until 1973 that this species was discovered in Kyushu,<br />
Table 1. <strong>Lycaenidae</strong> from Japan listed by Hama et al. (1989).<br />
Species<br />
Artopoeles pryeri Murray<br />
Coreana raphaelis Oberthur<br />
Niphandra fusca Bremer<br />
Shijimiaeoides divinus Fixcen<br />
Tongeia fisheri Eversmann<br />
Lycaeides subsolana Eversmann<br />
Causes <strong>of</strong> decline<br />
Urbanisation<br />
Urbanisation; deforestation<br />
Urbanisation<br />
Road construction<br />
Larch forestation<br />
Habitat degradation<br />
Orchard and golf course construction<br />
Agriculture and spraying<br />
Factory construction<br />
Flood: foodplant extinction<br />
Urbanisation<br />
Succession<br />
Flood control works<br />
35<br />
Japan: its distribution is extremely local, feeding on Lysionotus<br />
pauceflorus (Gesneriaceae) which usually grows on Quercus<br />
trees (Fagaceae) in humid evergreen forest. Just after that, in<br />
1975, this species was designated as 'Tennen Kinenbutu' by the<br />
national government. In this case, the original colonies <strong>of</strong><br />
Kyushu seem to have been conserved. However, there have<br />
been few additional records from other areas (except one from<br />
Nara, Honshu) because collectors do not publish records <strong>of</strong><br />
protected species even if these are caught. It is believed that<br />
some populations <strong>of</strong> S. moorei other than that in Kyushu<br />
become extinct without any definite records <strong>of</strong> this.<br />
Apart from Shijimia moorei, the decline <strong>of</strong> Japanese<br />
butterflies is attributable to alteration in land management<br />
practices and its effect on butterfly habitat. In Japan, most <strong>of</strong> the<br />
victims, such as Shijimiaeoides divinus Fixcen (<strong>Lycaenidae</strong>,<br />
Polyommatini), Coreana raphaelis Oberthur (<strong>Lycaenidae</strong>,<br />
Theclini) and FabriciananerippeC & R. Felder(Nymphalidae),<br />
depend on habitats such as coppice or grassland which have<br />
been maintained by traditional agricultural practices such as<br />
slash and burn, periodical coppicing for fuels and charcoal<br />
Locality<br />
Setagaya, Tokyo<br />
Kawanishi, Yamagata<br />
Kiso, Nagano; Shiga<br />
Kiso, Nagano; Shiga<br />
Kiso, Nagano<br />
Aomori<br />
Aomori<br />
Azumino, Nagano<br />
Komagano, Nagano; Matsumato, Nagano<br />
Matsumato, Nagano<br />
Azumino, Nagano<br />
Minami-azumi, Nagano