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Drawida moriokaensis 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Annelida Clitellata Megadrilaceae Moniligastridae

Scientific Name: Drawida moriokaensis Ohfuchi, 1938
Taxonomic Source(s): Blakemore, R.J. 2012. Japanese earthworms revisited a decade on (Oligochaeta: Megadrilacea). Zoology in the Middle East 58(4): 15-22. doi.org/10.1080/09397140.2012.10648981.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2018
Date Assessed: 2017-08-07
Assessor(s): Blakemore, R.J.
Reviewer(s): Mumford, N.
Justification:
This species is known only from Morioka in Iwate-ken and Tsukinoki in Miyagi-ken, Japan (Blakemore 2003, 2012, Blakemore et al. 2014). The area of occupancy (AOO) for this species is 8 km² and the extent of occurrence (EOO) is 3,384 km². Due to its small range, two locations and threat of urbanization, agricultural intensification and volcanic or radioactive fallout from Mt Iwate and the Fukushima Daiichi Nuclear Power Plant. Consequently an inferred decline in its habitat quality and other likely direct threats, this species is listed as Endangered.

Geographic Range [top]

Range Description:This species is known only from Morioka in Iwate-ken and Tsukinoki in Miyagi-ken, Japan (Blakemore 2003, 2012, Blakemore et al. 2014). The area of occupancy (AOO) for this species is 8 km² and the extent of occurrence (EOO) is 3,384 km².
Countries occurrence:
Native:
Japan
Additional data:
Estimated area of occupancy (AOO) - km2:8
Number of Locations:2
Upper elevation limit (metres):1000
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is only known from its type description from about 80 years ago.
Current Population Trend:Unknown
Additional data:
Continuing decline of mature individuals:Unknown
Population severely fragmented:Unknown

Habitat and Ecology [top]

Habitat and Ecology:Nothing is known of the ecology of this species except that it is found in soil.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: There is no use/trade information for this species.

Threats [top]

Major Threat(s): The northernmost range in Morioka may be slightly threatened by proximity to Mt Iwate, an active volcano. This species in its southernmost range may be affected by Fukushima Daiichi reactor radioactive fallout from March, 2011. Throughout its range it may be somewhat threatened by urban expansion (e.g. Morioka city) and agricultural intensification (cultivation, synthetic fertilizers and toxic pesticides).

Conservation Actions [top]

Conservation Actions: No conservation actions are known to apply to this species more research into its ecology is required.

Citation: Blakemore, R.J. 2018. Drawida moriokaensis. The IUCN Red List of Threatened Species 2018: e.T117371018A117374368. . Downloaded on 24 September 2018.
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