Population genetic structure of Marbled Rockfish, (Cuvier, 1829), in the northwestern Pacific Ocean.

is an ovoviviparous fish widely distributed in the northwestern Pacific. To examine the gene flow and test larval dispersal strategy of in Chinese and Japanese coastal waters, 421 specimens were collected from 22 localities across its natural distribution. A 458 base-pair fragment of the mitochondrial DNA (mtDNA) control region was sequenced to examine genetic diversity and population structure.

The comparison of krill oil extracted through ethanol-hexane method and subcritical method.

This study aimed to develop a safe method EH (ethanol-hexane) to extract two kinds of krill oil (KO) simultaneously and analyze their composition. Meanwhile, subcritical butane and subcritical butane-dimethyl ether extraction were used to extract KO for analysis comparison. Folch method was used to extract total lipids.

Effects of putrescine on the postharvest physiology characteristics in cowpea.

The effects of putrescine (Put) treatment on postharvest physiology characteristics in cowpea during cold storage have been investigated. The results indicated that Put with 8 mmol/L treatment greatly delayed aging of the cowpea; the sensory quality of cowpea was well maintained; the increase in weight loss was also inhibited, and the decrease in the content of ascorbic acid, chlorophyll, and total phenol was reduced efficiently. Antioxidant enzyme activities containing POD, CAT, and APX were preserved at higher levels in treated groups than the control during cold storage.

Population genetic structure of the deep-sea mussel s (Bivalvia: Mytilidae) in the Northwest Pacific.

Studying population genetics of deep-sea animals helps us understand their history of habitat colonization and population divergence. Here, we report a population genetic study of the deep-sea mussel (Bivalvia: Mytilidae) widely distributed in chemosynthesis-based ecosystems in the Northwest Pacific. Three mitochondrial genes (i.

Cytogenetic studies in three octopods, , , and from the coast of China.

To provide markers to identify chromosomes in the genome of octopods, chromosomes of three octopus species were subjected to NOR/C-banding. In addition, we examined their genome size ( value) to submit it to the Animal Genome Size Database. Silver staining revealed that the number of Ag-nucleoli was 2 ( (Sasaki, 1920)), 2 ( (d'Orbigny, 1839)) and 1 ( Zheng et al.

Inhibition of nonenzymatic depurination of nucleic acids by polycations.

DNA base depurination is one of the most common forms of DNA damage and , and the suppression of depurination is very important for versatile applications of DNA in biotechnology and medicine. In this work, it was shown that the polycations chitosan (Cho) and spermine (Spm) strongly inhibit DNA depurination through the formation of polyion complexes with DNA molecules. The intramolecular electrostatic interaction of positively charged polycations with DNA efficiently suppresses the protonation of purine groups, which is the key step of depurination.