Several commercially and ecologically important species in the southern Benguela have undergone southward and eastward shifts in their distributions over previous decades, most notably the small pelagic fish sardine Sardinops sagax and anchovy Engraulis encrasicolus. Understanding these changes and their implications is essential in implementing an ecosystem approach to fisheries in the souther...

Fish with indeterminate fecundity spawn multiple times throughout a protracted reproductive period. During that period several ovulation events succeed one another, and different oocyte developmental stages co-occur in the ovaries new oocytes consistently recruiting from growth phase to next form sequential batches. In this study, we examined detail recruitment development pattern of batches co...

The potential of the 18S rRNA V9 metabarcoding approach for diet assessment was explored using MiSeq paired-end (PE; 2 × 150 bp) technology. To critically evaluate the method's performance with degraded/digested DNA, the diets of two zooplanktivorous fish species from the Bay of Biscay, European sardine (Sardina pilchardus) and European sprat (Sprattus sprattus), were analysed. The taxonomic re...

Fractionation processes of fish oil fatty acid for the production of long-chain polyunsaturated fatty acids (PUFA) of omega-3 series have become very important because of the beneficial properties of these substances to human health, and, as a functional food. To obtain high yield of extraction and concentration of omega-3, rainbow sardine fish (Dussumieria acuta) oil were studied by: supercrit...

Accumulation of urocanic acid (UCA) in stored fish has been attributed to both endogenous and exogenous histidine ammonia lyase (HAL) activity. The level HAL Indian mackerel, tuna, sardine were monitored at different temperatures. It was also evaluated during storage eviscerated whole under vacuum packaging. UCA production storage. highest the lowest activity fresh observed mackerel tuna (26.32...

The oleaginous yeast Moniliella spathulata R25L270 was the first yeast able to grow and produce extracellular lipase using Macaúba (Acrocomia aculeate) cake as substrate. The novel lipase was recently identified, and presented promising features for biotechnological applications. The M. spathulata R25L270 lipase efficiently hydrolyzed vegetable and animal oils, and showed selectivity for genera...

The group of small pelagics (sardines, anchovies, herrings, etc.) is the largest source of wild marine protein worldwide, providing annually between 21% and 43% of the total marine capture production during at least the last 60 y (1). Even when large-scale fisheries have been operating for decades to centuries, their assessment and management remains difficult and highly uncertain (2). Such cha...

There is considerable evidence that environmental variability plays a major role in controlling abundance and distribution of marine populations and that fisheries alter ecosystem functioning and state. This overview documents emergent ecosystem-level ecological patterns and answers meaningful questions regarding the exploitation of marine resources. Do marine ecosystems function differently fr...