Fisheries bycatch is a significant marine conservation issue as valuable fish are wasted and protected species harmed with potential negative ecological and socio-economic consequences. Even though there are indications that the small-scale handline fishery of the Galapagos Marine Reserve has a low selectivity, information on its bycatch has never been published. We used onboard monitoring and ...

Stock identification has been an important prerequisite for stock assessment throughout its history. The earliest evaluations of recruitment variability recognized that understanding the spatial scale of a fishery resource is essential for studying population dynamics. A paradigm of stock structure was based on closed migration circuits and geographic variation of phenotypic traits and formed a...

The shallow lake wetlands in the middle and lower Yangtze River floodplain are important wintering and stopover habitats for migratory waterbirds on the East Asia-Australia Flyway. With increasing fishery practices in recent years, however, the wetlands have deteriorated significantly and now threaten wintering waterbirds. To gain insight into the influence of deteriorating wetlands on waterbir...

Around the Hawaiian Islands, a variety of small and medium-scale fisheries target bigeye (Thunnus obsesus) and yellowfin tuna (T. albacares) associated with offshore seamounts and weather monitoring buoys, an inshore network of fish aggregating devices (FADs), and natural aggregation sites (Itano and Holland, 2000). These fisheries, conducted from longline, troll and handline, and to a lesser e...

This paper introduces and describes in detail the bioeconomic optimization model BEMCOM (BioEconomicModel to evaluate the COnsequences of Marine protected areas) that has been developed to assess the economic effects of introducing Marine Protected Areas (MPA) for fisheries. BEMCOM answers the question ‘what’s best?’, i.e. finds the overall optimal effort allocation, from an economic point of v...

A comprehensive understanding of the reproductive biology and spawning activity of the tuna is necessary for sound management of this complex and important fishery. Current methods for assessing maturity schedules of tunas is based on the conventional approach of collecting gonads for detailed histological examination. While this method has proven to be accurate and provides valuable informatio...

The status of the Mediterranean Sea fisheries was evaluated across seven subdivisions General Fisheries Commission for (GFCM), using ecotrophic and catch-based indicators period 1970–2017. All confirmed that fishery resources are no longer sustainably exploited structure function marine ecosystems has been altered as a result overexploitation. Although declining catches were common feature Sea,...