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Culture of the Chinese mitten crab Eriocheir japonica sinensis has become a large industry in China because of improved hatchery techniques in the past two decades. In this study, we investigated the reproductive potential of individual male crabs in a local pond‐reared breeding stock [with a 2.5:1 female‐biased sex ratio] to assess the current broodstock management. Relative to virgin (unmated) males,...
Salt‐affected soils are an important resources; although the crop yields in the soils are lower, they should not be ignored nor given up. By using pot experiments, five different organic amendments (pig manure, cattle dung, chicken manure, rapeseed meal, and biochar) were used to investigate their effects on the chemical properties and enzyme activities of coastal saline soil as well as the growth...
The microstructural and ultrastructural changes of germ cells during spermatogenesis of zebrafish (Danio rerio) were examined using light microscopy (LM) and transmission electron microscopy (TEM). Generally the process of spermatogenesis in zebrafish is similar to that of other teleosts, however, here we describe some peculiar features of zebrafish spermatogenic cells which have a limited report...
The epididymis of the soft-shelled turtle Pelodiscus sinensis was examined under light and transmission electron microscopes to determine the morphological characteristics, as well as their changes at different phases of the seasonal reproductive cycle. Three distinct regions, viz., cranial, middle and caudal were identified in the epididymis based on anatomical characteristics. The epididymal epithelium...
The ultrastructure of spermatozoa in cauda epididymidis of soft-shelled turtle, P. sinensis during breeding season was investigated by light microscopy (LM) and electron microscopy (TEM and SEM). The mature spermatozoa appeared elongated and filiform. In general, the turtle spermatozoon contains a characteristic head, midpiece and tail, similar in morphology to that of birds, amphibians and other...
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