Published in Seminars in cell & developmental biology
Red algae of the order Bangiales are notable for exhibiting flexible promotion of sexual and asexual reproductive processes by environmental stresses. This flexibility indicates that a trade-off between vegetative growth and reproduction occurs in response to environmental stresses that influence the timing of phase transition within the life cycle...
Published in Zoological research
肝脏作为生物有机体最重要的代谢器官之一，其脂质稳态对于维持正常的生命活动具有重要作用。硬脂酰辅酶A去饱和酶 (Scd)，也称为Δ9去饱和酶，是催化合成单不饱和脂肪酸合成的限速酶，在脂肪合成中具有重要作用。在哺乳动物中，Scd活性的丧失或抑制通常会导致甘油三酯和胆固醇酯合成的减少和个体脂肪囤积降低。然而，作为重要的动物蛋白来源，在鱼类中scd是如何调控脂质代谢仍然未知，同时scd在性别发育中的作用也不清楚。该研究通过CRISPR/Cas9方法成功构建了scd斑马鱼突变体模型，揭示了scd在鱼类脂质代谢和性别发育中的作用。GC-MS分析表明，scd-/- 突变体中饱和脂肪酸C16:0和C18:0水平显著升高，而单不饱和脂肪酸C16:1和C18:1水平显著降低。与Scd-/- 哺乳动物不同，scd...
Published in Biological trace element research
Almost all selenogenes are expressed in the testis, and those have the highest and constant expressions will be the primary candidates for functional analysis of selenium (Se) in male reproduction. This study aimed to profile the mRNA expressions of the testis-abundant selenogenes of rat models in responses to growth and dietary Se concentrations. ...
Published in Reproductive sciences (Thousand Oaks, Calif.)
It sometimes appears that science is moving in one direction and society is moving in another. When we act as physicians, we are compelled to care for the patient in front of us in a one-on-one relationship. When we act as reproductive scientists, we strive to care for humanity writ large. However, there is an intermediate social structure that we ...
One of the constraints in pirarucu, Arapaima gigas farming is the reproduction in captivity, due to inconsistent number of spawning events per reproductive cycle, thus, unreliable availability of juvenile fish. This is a first-hand report on predation of pirarucu larvae by opportunistic fish species in a breeding pond. Fish samples were collected f...
Published in Zoology (Jena, Germany)
Oviparous elasmobranch embryos (Chondrichthyes) have been the focus of several embryological studies; they are useful models for studying early ontogeny in vertebrates, as can help explore the existence of common developmental patterns among species. Skates (Rajiformes) are the most speciose order of oviparous elasmobranchs, however, few studies ar...
Juvenile hormones (JHs) control insect metamorphosis and reproduction. JHs act through a receptor complex consisting of methoprene-tolerant (Met) and taiman (Tai) proteins to induce transcription of specific genes. Among chemically diverse synthetic JH mimics (juvenoids), some of which serve as insecticides, unique peptidic juvenoids stand out as b...
Funder: Biotechnology and Biological Sciences Research Council / Substantial evidence suggests crosstalk between reproductive and gut-axis but mechanisms linking metabolism and reproduction are still unclear. The present study evaluated the possible role of glucose-dependent-insulinotropic-polypeptide (GIP) and glucagon-like-peptide-1 (GLP-1) in re...
Published in Animal reproduction science
In cyprinids, Tyrode's (TLP) and Volckaert's (VRT) solutions are the most frequently used extenders for short-term sperm storage. The effectiveness of TLP and VRT on ide (Leuciscus idus) sperm short-term storage was analyzed using a × 4 (sperm:extender) dilution ratio over 48 h. A × 4 (1:3) dilution ratio was compared to a × 10 (1:9) dilution ratio...
Published in Animal bioscience
Pregnant Nelore heifers (n = 417) were used to evaluate the effects of supplementation with monensin-molasses multinutrient block (B) during pre and/or postpartum on reproductive and progeny performance. Heifers were allocated in four treatments: i) CC: heifers received control supplement (C) in loose meal form (0.06% of body weight [BW] offered da...
