Introduction Small pelagic fishes constitute large proportions of fisheries and are important components linking lower higher trophic levels in marine ecosystems. Many small the Northwest Pacific spawn upstream Kuroshio spend their juvenile stage Front area, indicating that Current system impacts stock fluctuations. However, distribution these fish relative to has not been determined due dynami...

Noise through its interaction with the nonlinearity of the living systems can give rise to counter-intuitive phenomena. In this paper we shortly review noise induced effects in different ecosystems, in which two populations compete for the same resources. We also present new results on spatial patterns of two populations, while modeling real distributions of anchovies and sardines. The transien...

A stochastic age-structured population model was developed to explore biologically favourable levels of effort and closing periods within the sardine pelagic fishery in the eastern Mediterranean Sea. Results suggested that the developed age-structured model captured the observed biomass fluctuations and catches reasonably well and represents the first comprehensive investigation of alternative ...

In this article we present a model for analyzing patterns of genetic diversity in a continuous, finite, linear habitat with restricted gene flow. The distribution of coalescent times and locations is derived for a pair of sequences sampled from arbitrary locations along the habitat. The results for mean time to coalescence are compared to simulated data. As expected, mean time to common ancestr...

Results from sampling for sardine (Sardina pilchardus) eggs at station L4 in the coastal Western English Channel over the period 1988–2008 are presented and discussed in relation to environmental conditions. As previously observed in this area, there is a summer spawning season (midMarch to early July) and one in the autumn (early September to mid-November). The historical trend for increasing ...

The annual catches of four small longliners operating off northeast Brazil from 1983 to 1997 were examined across different areas and locations. The total catch comprised tunas (30%), sharks (54%), billfishes (12%), and other fish species (4%). Fishing strategy and annual composition of catches showed large spatial and temporal variabilities with the dominant catches alternating among yellowfin...

Fatty acids (FAs) composition, 24 persistent organic pollutants (POPs), and 16 trace elements were examined in small pelagic fish (sardine, anchovy, round sardinella, chub horse mackerels) caught by a fishing fleet for more than three years the eastern Mediterranean Sea. Five Unmix source profiles associated with both sources, such as overlapping diet, including low-niche marine organisms input...

Fish and seafood are recommended diet constituents providing high quality protein, vitamins, minerals and omega-3 fatty acids, mainly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). However, these foodstuffs can also be the major source ofmethylmercury intake in humans. In general, more than 90% of the mercury in fish is found as methylmercury, but contents of methylmercury can vary...

The study of small pelagic fish by hydroacoustic methods in the Mediterranean Sea began Adriatic 1950’s. Since 2009, internationally coordinated, extensive, regular surveys have been conducted framework MEDIAS - International Acoustic Surveys – action, under EU Data Collection Framework, to provide inputs for management pelagics, particularly European anchovy (Engraulis encrasicolus) and sardin...

It is widely known that the abundance and distribution dynamics of populations small pelagic clupeid fish, such as sardines anchovies, are affected by large-scale climate variability, which may lead to changeovers new regimes pelagics. However, long-distance climatic oscillations, El Niño/La Niña Pacific Decadal Oscillation, have been little explored in Western Mediterranean Sea. We investigate...