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Qin J.,China Agricultural University | Qin J.,Guangdong Entomological Institute | Su Q.-Q.,Guangdong Entomological Institute | Wang D.,China Agricultural University | And 5 more authors.
Pakistan Journal of Zoology | Year: 2015

Studies have rarely focused on the effect of cabergoline dosage and duration on normal male animal and human. We examined the serum concentrations of four hormones, reproductive organ weight, and sperm quality of adult male lesser rice-field rats (Rattus losea) after cabergoline treatment. Forty male rats were randomly divided into five groups and treated with cabergoline given by gavage daily for 3 d at three doses (0, 50, and 100 μg/kg). Animals were euthanized at 7 and 24 days after the end of treatment. Results showed that cabergoline did not affect follicle-stimulating hormone levels. Compared with control, testosterone concentrations decreased significantly by 48.6% at 7 d after treatment with 100 μg/kg cabergoline. Luteinizing hormone concentrations were significantly reduced by cabergoline dosage and time course. Time course affected sperm density and sperm deformity rate. Cabergoline dosage and time course significantly affected male sperm vitality at 50 μg/kg. Moreover, cabergoline significantly decreased the percentage of 'rapid', 'slow or sluggish' progressive motility sperms, and increased the percentage of "immotility" sperms. The present study suggests that cabergoline may reduce luteinizing hormone level, and impair sperm quality, which hint weakening reproductive effects on male R. losea. Copyright 2015 Zoological Society of Pakistan. Source

Li Z.-Q.,Guangdong Entomological Institute | Li Z.-Q.,Guangdong Public Laboratory of Wild Animal Conservation and Utilization | Li Z.-Q.,Guangdong Key Laboratory of Integrated Pest Management in Agriculture | Ke Y.-L.,Guangdong Entomological Institute | And 3 more authors.
Environmental Entomology | Year: 2016

Termite (Blattodea: Termitoidae) assemblages have important ecological functions and vary in structure between habitats, but have not been studied in lower subtropical forests. To examine whether differences in the richness and relative abundance of termite species and functional groups occur in lower subtropical regions, termite assemblages were sampled in Dinghushan Biosphere Reserve, China, among pine forest, pine and broad-leaved mixed forest (mixed forest), and monsoon evergreen broad-leaved forest (monsoon forest). The dominant functional group was wood-feeding termites (family Termitidae), and the mixed forest hosted the greatest richness and relative abundance. Soil-feeding termites were absent from the lower subtropical system, while humus-feeding termites were sporadically distributed in mixed forest and monsoon forest. The species richness and functional group abundance of termites in our site may be linked to the forest succession. Altitude, soil temperature, air temperature, surface air relative humidity, and litter depth were significant influences on species and functional group diversity. © 2015 The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com. Source

Jiang K.,Sun Yat Sen University | Jiang K.,Guangdong Entomological Institute | Han R.,Guangdong Entomological Institute | Han R.,Guangdong Public Laboratory of Wild Animal Conservation and Utilization | Han R.,Guangdong Key Laboratory of Integrated Pest Management in Agriculture
Journal of Industrial Microbiology and Biotechnology | Year: 2015

Cordyceps militaris is an important medicinal fungus. Commercialization of this fungus needs to improve the fruiting body production by molecular engineering. An improved Agrobacterium tumefaciens-mediated transformation (ATMT) method was used to select an insertional mutant (g38) which exhibited fast stromatal differentiation and increased yield. The Rhf1 gene encoding filamentation protein was destroyed by a single T-DNA and no Rhf1 transcription was detected in mutant g38. To verify the function of the Rhf1 gene, RNA interference plasmid and overexpression vector of the Rhf1 gene were constructed and transferred to the wild-type JM4 by ATMT. Fast stromatal differentiation and larger fruiting bodies were found in the RNAi-Rhf1 mutants (JM-iRhf1). In the overexpression mutants (JM-OERhf1), neither stromata nor fruiting bodies appeared. The rescued strain (38-OERhf1) showed similar growth characteristics as JM4. These results indicated that the Rhf1 gene was involved in the stromatal differentiation and the shape formation of fruiting bodies. © 2015, Society for Industrial Microbiology and Biotechnology. Source

Su Q.-Q.,Guangdong Entomological Institute | Chen Y.,Guangdong Entomological Institute | Qin J.,Guangdong Entomological Institute | Wang T.-L.,Hainan Normal University | And 4 more authors.
Animal Biology | Year: 2016

Mifepristone and quinestrol are effective drugs for controlling rodent fertility, but their inhibitory effectiveness during premating, early pregnancy, and late pregnancy is unknown. In this study, six groups of eight female Brandt's voles (Lasiopodomys brandtii) were administered with mifepristone, quinestrol, or a control for three days during premating, early pregnancy, or late pregnancy. In the mifepristone-treated groups, the premating females bred, whereas the early and late pregnant females did not. The reproductive rate, litter size, average body mass at birth, and survival rate of pups did not significantly differ between the mifepristone-treated premating group and the control group. By contrast, quinestrol treatment completely inhibited fertility during the three reproductive phases. In addition, fertility was not completely restored in the second pairing. The reproductive rates were higher for mifepristone, both during early and late pregnancy, than for quinestrol, but both were lower than the control. Thus, mifepristone and quinestrol both inhibited the fertility of female Brandt's voles at different reproductive periods. These results suggest that these two sterilants could be delivered during the reproductive season of the target pest animal. © Koninklijke Brill NV, Leiden, 2016. Source

Jin X.-X.,Guangdong Entomological Institute | Jin X.-X.,Guangdong Public Laboratory of Wild Animal Conservation and Utilization | Jin X.-X.,Guangdong Key Laboratory of Integrated Pest Management in Agriculture | Li C.-D.,Northeast Forestry University | And 3 more authors.
ZooKeys | Year: 2016

Three new species of Arescon Walker, 1846, A. gaoligongensis Jin & Li, sp. n., A. sparsiciliatus Jin & Li, sp. n. and A. stenopterus Jin & Li, sp. n. are described. A key to the Chinese species is given and photomicrographs are provided to illustrate morphological characters. All the specimens are deposited in the insect collections of Northeast Forestry University, China. © Xiang-Xiang Jin et al. Source

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