Two new species of free-living marine nematode from mangrove habitats in Xiamen Bay are identified.Anoplostoma tumidum sp.nov.is characterized by relatively short outer labial setae(0.86–1.00 h.d.),long tail(c 7.2–8...Two new species of free-living marine nematode from mangrove habitats in Xiamen Bay are identified.Anoplostoma tumidum sp.nov.is characterized by relatively short outer labial setae(0.86–1.00 h.d.),long tail(c 7.2–8.9,c' 8.3–10.5),an instinct swollen distal portion of slender spicule(Sc 94–101 μm),and well developed copulatory bursae without bursal papillae.A.tumidum sp.nov.differs from all valid species of genus Anoplostoma in copulatory apparatus of males with a distinct swollen distal portion of spicule,and a relatively obvious constriction of head.A.paraviviparum sp.nov.is characterized by relatively long outer labial setae(1.11–1.22 h.d.),and tail(c 6.6–8.5,c' 8.6–10.2);elongated spicules with distinct knob-like proximal and pointed distal ends(Sc 46–69 μm);distinct strip-like gubernaculum(length with 11–15μm);well developed copulatory bursae with precloacal papillae and post-cloacal papillae;and a distinct constriction of head.A.paraviviparum sp.nov.is similar to A.viviparum Bastian,1865,but differs in the reproductive mode of female and the constriction of head.展开更多
Paulownia is a fast-growing tree species that is mainly found in the central part of China. Three main cultivation areas of Paulownia are the Yellow-Huai-Hai Plain, south of the Yangtze River, and arid and semi-arid a...Paulownia is a fast-growing tree species that is mainly found in the central part of China. Three main cultivation areas of Paulownia are the Yellow-Huai-Hai Plain, south of the Yangtze River, and arid and semi-arid areas of Northwestern China. There are 9 species, 4 varieties and 4 forms used in the production in China. Study achievements were obtained in the fields of species/variety introduction, selection and breeding, afforestation techniques as well as the control of diseases and pests. The main problems existing in the current production include lack of improved varieties, mix-up of different varieties and variety degeneration due to the long course of a sexual reproduction. The author put forward countermeasures for the problems.展开更多
基金supported by the National Natural Science Foundation of China (No.41176107)Open Research Fund Program of Provincial Key Laboratory of Marine Fishery Resources and Eco-environment of Fujian (No.fmfre2014012)the Training Program of Fujian Excellent Talents in University
文摘Two new species of free-living marine nematode from mangrove habitats in Xiamen Bay are identified.Anoplostoma tumidum sp.nov.is characterized by relatively short outer labial setae(0.86–1.00 h.d.),long tail(c 7.2–8.9,c' 8.3–10.5),an instinct swollen distal portion of slender spicule(Sc 94–101 μm),and well developed copulatory bursae without bursal papillae.A.tumidum sp.nov.differs from all valid species of genus Anoplostoma in copulatory apparatus of males with a distinct swollen distal portion of spicule,and a relatively obvious constriction of head.A.paraviviparum sp.nov.is characterized by relatively long outer labial setae(1.11–1.22 h.d.),and tail(c 6.6–8.5,c' 8.6–10.2);elongated spicules with distinct knob-like proximal and pointed distal ends(Sc 46–69 μm);distinct strip-like gubernaculum(length with 11–15μm);well developed copulatory bursae with precloacal papillae and post-cloacal papillae;and a distinct constriction of head.A.paraviviparum sp.nov.is similar to A.viviparum Bastian,1865,but differs in the reproductive mode of female and the constriction of head.
文摘Paulownia is a fast-growing tree species that is mainly found in the central part of China. Three main cultivation areas of Paulownia are the Yellow-Huai-Hai Plain, south of the Yangtze River, and arid and semi-arid areas of Northwestern China. There are 9 species, 4 varieties and 4 forms used in the production in China. Study achievements were obtained in the fields of species/variety introduction, selection and breeding, afforestation techniques as well as the control of diseases and pests. The main problems existing in the current production include lack of improved varieties, mix-up of different varieties and variety degeneration due to the long course of a sexual reproduction. The author put forward countermeasures for the problems.
