• Title/Summary/Keyword: acari

Search Result 212, Processing Time 0.024 seconds

Soil Microarthropod Community in the Process of Needle Leaf Decomposition in Korean Pine(Pinus koraiensis) Forest of Namsan and Kwangreung (남산과 광릉수목원의 잣나무림에서 낙엽분해과정에 관련된 토양미소절지동물군집)

  • Bae, Yoon-Hwan;Lee, Joon-Ho
    • The Korean Journal of Soil Zoology
    • /
    • v.4 no.2
    • /
    • pp.75-80
    • /
    • 1999
  • Two years-study with litter bag (mesh size : 0.4 mm, 1.7 m) was carried out from Nov., 1996 to Sept., 1998 to investigate the soil microarthropod community in the process of needle leaf secomposition of Korean pine (Pinus koraiensis) forest in Namsan and Kwangreung, where were supposed to be under different environmental selective pressures. Soil arthropoda collected from litter bags were sorted into suborders or higher taxa. Acari and Collembola were dominant groups, which were 61-68% and 27-35% of total soil arthropod in their numbers, respectively. Among Acari, Oribatida was major group, and Gamasida and Actinedida were minor groups. Abundance of Acari was a little higher in Kwangreng than in Namsan. But there was not significant difference between the arthropod community structure of Namsan and Kwangreng forest. And the different mesh sizes (0.4 mm and 1.7 mm) of litter bags could not make significantly different community structures in the litter bags. One taxon showed different pattern of population dynalics from another. But Oribatida, Gamasida and Collembola showed peak density in July, 1997. All taxa showed lower population densities in cold season i.e. Nov., Jan. and March. There was not significant difference in decomposition rate between Namsan and Kwangreng forest, and between mesh sizes of litter bags. % residual mass of needle leaf was about 40% at 22 months after litter fall.

  • PDF

A New Species, Acanthobelba heterosetosa, of Oribatid Mite from Mt. Jiri in Korea (한국산 날개응애 1신종, 곧은낚시바늘염주응애)

  • 최성식
    • The Korean Journal of Soil Zoology
    • /
    • v.2 no.1
    • /
    • pp.16-18
    • /
    • 1997
  • Compared with type specimen Acanthobelba tortuosa Enami and Aoki, 1993, a new species, A. heterosetosa sp. nov., of oribatid mites collected from Mt. Jiri has the following characteristic figures. Sensillus is long, slightly thickened at distal part, and covered with barbs sparsely. A pair of prodorsal tubercles Da are present. Natogastral frontal tubercles sa is elongated rather than hooked. Dorsal setae are not the same in shape and length: setae c1 and c2 are thick, blunt at tip, covered with small barbs and curved several times, but others are smooth.

  • PDF

Taxonomic Study of Parholaspid Mites (Acari, Mesostigmata) in Korea (한국산 창응애과(진드기아강, 중기문목)의 분류학적 연구)

  • 이원구;이소영
    • Animal Systematics, Evolution and Diversity
    • /
    • v.16 no.1
    • /
    • pp.105-112
    • /
    • 2000
  • Mesostigmatid mites were collected from forest soils in Korea from December 1998 to October 1999. Eleven species were recognized including a new species, Neparholaspis bisunensis n. sp., and three new records, Holaspina communis (Ishikawa, 1966), Holaspina multidentatus (Ishikawa, 1980) and Holaspulus montanus Ishikawa, 1995.

  • PDF

Two Copidognathus Halacarids(Acari: Halacaridae)from Korea (한국산 뾰족입짠물응애속(진드기목: 짠물응애과)의 2종)

  • Tapas Chatterjee;Lee, Ji-Min;Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
    • /
    • v.20 no.1
    • /
    • pp.45-54
    • /
    • 2004
  • A new species of marine Halacaridae, Copidognathus laevisetosus is recorded from Yeongdeok coast, Korea. In morphological aspects, the present new spe챠es is closely related to C. koreanus Chatterjee and Chang. Morphological similarities and dissimilarities between them are discussed. Copidognathus cerberoideus Bartsch is reported here for the first time from Korea and away from its type locality.

New record of two feather mites(Acari: Sarcoptiformes: Astigmata) isolated from Actitis hypoleucos in South Korea

  • Han, Yeong-Deok;Min, Gi-Sik
    • Journal of Species Research
    • /
    • v.8 no.2
    • /
    • pp.225-232
    • /
    • 2019
  • Two feather mites, Bychovskiata hypoleuci Mironov and Ddabert, 1997 and Phyllochaeta interifolia (Mégnin and Trouessart, 1884) are reported for the first time in South Korea. Specimens of these two species were collected from the common sandpiper Actitis hypoleucos. The genera Bychovskiata Dubinin, 1951 and Phyllochaeta Dubinin, 1951 are also new reports for South Korea. Here, we provide morphological descriptions and illustrations of these two species. Additionally, we provide partial sequences of the mitochondrial cytochrome c oxidase subunit I(COI) as DNA barcodes.

Three feather mites(Acari: Sarcoptiformes: Astigmata) isolated from Tringa glareola in South Korea

  • Han, Yeong-Deok;Min, Gi-Sik
    • Journal of Species Research
    • /
    • v.8 no.2
    • /
    • pp.215-224
    • /
    • 2019
  • We describe three feather mites recovered from a wood sandpiper Tringa glareola that was stored in a $-20^{\circ}C$ freezer at the Chungnam Wild Animal Rescue Center. These feather mites are reported for the first time in South Korea: Avenzoaria totani (Canestrini, 1978), Ingrassia veligera Oudemans, 1904 and Montchadskiana glareolae Dabert and Ehrnsberger, 1999. In this study, we provide morphological diagnoses and illustrations. Additionally, we provide partial sequences of the mitochondrial cytochrome c oxidase subunit I(COI) gene as molecular characteristics of three species.

Potential of Using Oribatid mites(Acari: Oribatida) as Biological Indicators of Forest Soil Acidification (산림토양 산성화의 생물지표로써 날개응애(Acari: Oribatida) 이용 가능성)

  • Chuleui Jung;Joon-Ho Lee;Seong-Sik Choi
    • Korean Journal of Agricultural and Forest Meteorology
    • /
    • v.4 no.4
    • /
    • pp.213-218
    • /
    • 2002
  • The use of biological indicator for environmental monitoring has suddenly become popular in many international organizations as well as domestic ones. Since the biological indicator species should be well responsive to native environmental change, development of native indicator species is prerequisite for environmental assessment and restoration program. Through regression analysis of mean density and pH, potential indicator species were screened from Namsan and Kwangreung where differential environmental stresses are influenced; Lasiobelba remota, Ceratozetes sp. Tectocepheus velatus, Neogymnobates sp. and Oppia sp.3. Also keystone species in two study area were Lohmannia coreana, Ceratozetes sp., Rostrozetes pulcherrimus, and Lasiobelba remota in Namsan Deciduous forest and Neogymnobates sp., Neogymnobates donghaksaensis, and Cultroribula tridentata in Kwangreung. Advantages and disadvantages of using biological indicator for environmental monitoring were further discussed.