The aim of this study was to analyze the isotopic composition in muscle of striped weakfish Cynoscion guatucupa from Southwest Atlantic Ocean in order to evaluate a possible variation in δ13C and δ15N in response to dietary shifts that occur as animals grow. We also explored for isotopic evidence of differences between sample locations. The results showed an agreement between isotope analysis a...

Species that occupy the same area and use the same resources must either compete with each other or find ways to minimize competition. For rodents, 1 important resource is nesting sites. In this study I present data from direct behavioral observations in the succulent karoo of South Africa that show aggressive interactions between bush karoo rats (Otomys unisulcatus) and striped mice (Rhabdomys...

Several studies have been conducted in an attempt to determine the optimal freezing rate for cryopreservation of striped bass (Morone saxatilis) sperm. In this study, the effects of freezing rate (-10 °C, -15 °C, -20 °C, and -40 °C/min) on gamete quality was examined, using Sybr-14 and propidium iodide to determine viability (sperm cell membrane integrity), ATP concentration using a luciferin-l...

Zebra is a network file system that increases throughput by striping the file data across multiple servers. Rather than striping each file separately, Zebra forms all the new data from each client into a single stream, which it then stripes using an approach similar to a log-structured file system. Thm provides high performance for writes of small files as well as for reads and writes of large ...

DNA transfer techniques allow genetic manipulation of commercial fish. However, marine species have received little attention because of their difficult zootechnical requirements. The seabream (Sparus aurata) has become one of the most important species in the aquaculture of Mediterranean countries, and the development of suitable DNA transfer procedures represents a main step in its genetic im...

The present research looked at the ability of gilthead seabream to discriminate between two similar diets differing only in the extent of lipid oxidation. Six groups of 4 fish (254g initial wet weight) were allowed to select by means of self-feeders between two complete diets (34.5% casein + gelatin, 14.8% fish oil + soybean oil, 24.8% dextrin and 25.9% vitamins, minerals, filler and binder) wh...

This study compared for seabream, Sparus aurata exposed to benzo(a)pyrene-B(a)P-, the response of molecular cytochrome P450 1A (CYP1A) and cellular histopathology biomarkers. Male gilthead seabream, Sparus aurata specimens were exposed for 20 days via water to a series of high B(a)P concentrations. CYP1A was assessed by measuring enzymatic activity (EROD) and CYP1A protein content, and cellular...

Bony fish is highly sensitive to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exposure, especially at early developmental stages. TCDD induces various toxic effects including yolk sac edema, craniofacial malformation and neural damage in developing fish embryos. However, the effects of TCDD on the peripheral nervous system (PNS) of fish remain unclear. To clarify whether TCDD affects the morpholo...

Lithium (Li) dopants have garnered attention as a means to enhance hydrogen (H 2 ) binding energies and capacities in 2D boron-based materials. However, it is unclear if how these affect H dissociation chemisorption. Using density functional theory (DFT) nudged elastic band (NEB) calculations, reaction pathways for on borophene-hydride striped-borophene are investigated the presence of Li dopan...