The present study on common carp (Cyprinus carpio L.) sperm was designed to evaluate changes in sperm phenotypic variables during multiple sperm stripping with sperm storage: a) in vivo and b) in vitro. Similar males were multiple injected with carp pituitary (CP) 3 times 3 days apart. Sperm were stored in vivo in the body cavity for 0.5 days (fresh sperm) and 3 days (old sperm) after CP application, then sperm were collected and diluted with a carp extender 1:1 and stored in vitro on ice for 0, 3 and 6 days. In general, fresh sperm from the rst stripping had slightly better quality and quantity than old sperm from the second and third stripping, especially in the phenotypic parameters of number of total spermatozoa and number of total motile spermatozoa (P < 0.05). The highest kinetic and quantitative sperm variables were obtained in fresh and old sperm just after sperm collection at 0 days and then they decreased during in vitro sperm storage up to 6 days (P < 0.05). The fertilization, hatching and malformation rates from fresh sperm were similar compared with the old sperm. From the rst stripping, fresh sperm, even stored for 6 days in vitro, showed fertility, hatching and malformations at 92.5%, 91.5% and 1.3%, respectively. Multiple hormonal treatments with multiple male stripping together with 0.5 days of in vivo sperm storage followed by 6 days of in vitro storage are methods that can be recommended for use in common carp aquaculture.

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The biology of fish sperm, an important topic in the research of reproduction and fisheries from basic science to evolutionary and applied aspects, has implications for aquaculture management, fish breeding and biological conservation. The quality of spermatozoa plays a vital role in fish fertility, and directly affects the health and performance of offspring. Environmental factors that affect determinants of spermatozoa quality usually reflected in the DNA methylation pattern of the spermatozoa epigenome, which may change offspring's performance. The aim of the present study was to conduct a review on existing data about DNA methylation in fish spermatozoa as a biological tool for identifying the quality of offspring based on their phenotypes and performances. Furthermore, this study provides valuable knowledge from fundamental to applied sciences dealing with enhancement of breeding selection, fish reproduction and environmental adaptation. The review also describes the individual

Background. In the present study, we systematically evaluated the effects of Traditional Chinese Medicine (TCM) on androgenetic alopecia (AGA) in rodent models (rats and mice) to provide potential evidence for the treatment of AGA by TCM. Methods. Previous research papers focusing on the treatment of AGA by TCM were retrieved from various electronic databases (PubMed, Embase, The Cochrane Library, CNKI, Vip, Wanfang data, and CBM) up to October 30, 2021. Screening of the literature was performed independently, and data were extracted and assessed. A meta-analysis was performed using RevMan 5.3 software. Results. When compared with the model groups, a group of C57BL/6 mice treated with TCM showed an increase in the total number of hair follicles (mean difference [MD] = 11.99, 95% confidence interval [CI] [5.94,18.03], P = 0.0001 ), as well as a decrease in serum testosterone (T) level (MD = −1.10, 95% CI [−1.43, −0.78], P < 0.00001 ), skin discoloration time (MD = −2.93, 95% CI [−4.03, −1.84], P < 0.00001 ), and skin hair growth time (MD = −3.16, 95% CI [−4.16, −2.16], P < 0.00001 ). Terminal hair/vellus hair also increased in TCM-treated AGA animals (MD = 3.02, 95% CI [2.05, 3.98], P < 0.00001 ). No significant difference was found in serum estradiol (E2) level, skin tissue E2 level, or skin tissue T level between the TCM-treated group and the model group. Conclusion. TCM can increase the total number of hair follicles and terminal hair/vellus hair ratio, and reduce skin discoloration time and skin hair growth time in AGA animal models. These effects may be related to the reduction of the serum T level in AGA animals. These conclusions need to be verified by high-quality studies as the current analysis may be affected by the number and quality of the studies identified.

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Short‐term storage of fish sperm is a simple and cost‐effective process in fishery research from basic to applied perspectives. It has been used to elucidate and evaluate gamete biology and quality, perform in vitro fertilization, develop sperm cryopreservation. Sperm short‐term storage is used in selective breeding, hatchery production and advanced molecular investigations such as disease detection of commercial species in aquaculture as well as biological conservation of threatened or endangered fishes. Several studies have demonstrated that the quality of common carp Cyprinus carpio sperm can be influenced by their health, age, nutritional status, the dose of administered hormone and environmental factors. When sperm is stored for short time, spermatozoa motility and viability as key determinants of fertility affected by storage parameters including the composition of natural seminal plasma, duration of exposure, temperature, dilution ratio if the extender is used, and additives in addition to the factors that affect sperm quality such as the age of male and spawning period. This is due to damage to the integrity of the plasma membrane, production of reactive oxygen species (ROS) causing oxidative stress and epigenetic modification. This review highlights and investigates the recent data regarding worldwide aquaculture production, short‐term storage of common carp sperm and the effects of storage on spermatozoa function with consideration to factors that affect sperm quality during storage. It also highlights the knowledge gap that must be filled in the future for designing methods from laboratory into practical applications of short‐term storage in the breeding program of common carp.