First Occurrence Of The Tilapia Oreochromis Niloticus Niloticus (Linnaeus, 1758) In Lesina Lagoon (Eastern Italian Coast)

Individuals of the tilapia species Oreochromis niloticus niloticus(Linnaeus, 1758) were caught in Lesina Lagoon during experimental sampling for the shrimp Penaeus kerathurus using fyke net traps from December 1999 to September 2000. The species O. niloticusis not native in Italian coastal waters, although attempts of tilapia culture in land-based aquaculture farms were occasionally carried out in the past. The number of individuals captured in the samples suggests a colonization of the area of Lesina lagoon. The highest catches were observed during July. In July, the individuals caught represented the 22.3±4.1 % of the total catch weight. Such colonization of a marine environment byO. niloticusniloticus is the first case reported for Italy. The occurrence of the species in Lesina lagoon is attributed to fish which escaped from fish farms in the area and entered the lagoon through the numerous streams and irrigation-drainage channels that outflow along the south coastline

THE BASIS OF COASTAL FISHERY MANAGEMENT FOR SMALL FISHING COMMUNITIES: THE CASE OF THE SHRIMP (PENAEUS KERA THURUS) FISHERY IN WESTERN GREECE

The fishery for Penaeus kerthurus in western Greece illustrates key features of the balance that must be struck to manage marine resources in small coastal communities, whether in Greece or in Croatia

Technical measures without enforcement tools: is there any sense? A methodological approach for the estimation of passive net length in small scale fisheries

Passive nets are currently among the most important fishing gears largely used along the Mediterranean coasts by the small scale fisheries sector. The fishing effort exerted by this sector is strongly correlated with net dimensions. Therefore, the use of passive nets is worldwide managed by defining net length and net drop. The EC Reg. 1967/2006 reports that the length of bottom-set and drifting nets may be also defined considering their weight or volume; however, no practical suggestions for fisheries inspectors are yet available. Consequently,  even if such technical measures are reasonable from a theoretical viewpoint, they are hardly suitable as a management tool, due to the difficulties in harbour control. The overall objective of this paper is to provide a quick methodological approach for the gross estimation of passive net length (by net type) on the basis of net volume. The final goal is to support fisheries managers with suitable advice for enforcement and control purposes. The results obtained are important for the management of the fishing effort exerted by small scale fisheries. The methodology developed in this study should be considered as a first attempt to tackle the tangled problem of net length estimation that can be easily applied in other fisheries and areas in order to improve the precision of the models developed herein

Characterization of Color Production in Xalla´s Palace Complex, Teotihuacan

A multi-analytical approach was used to characterize color remains from Xalla, a Teotihuacan palace complex (project Teotihuacan, Elite and Government. Excavations in Xalla led by Linda R. Manzanilla). Color samples were obtained from polished lithic instruments and pigment ores. Those samples were analyzed combining microscopic and spectroscopic techniques. Our results coincide with previous studies in Teotihuacan, with the chromatic palette displaying a predominance of iron oxides such as hematite, yellow ochre and natural earths, as well as malachite, celadonite and glauconite. We have enlarged the corpus of raw materials with the characterization of jarosite and bone white and mica as aggregate. The identification of raw materials crossed with functional analysis of polished lithic artefacts suggests a production and application process for the pigmenting materials that were divided in four phases, from the crushing of the raw material to the application and finishing of the painted surfaces

Interaction between bottlenose dolphin (Tursiops truncatus) and trammel nets in the Archipelago de La Maddalena, Italy

Peer reviewedPublisher PD

Some biological parameters of the thin-lipped mullet Liza ramada (Pisces, Mugilidae) in the Neretva River delta (Eastern Adriatic, Croatian coast)

International audienceAspects concerning age, growth, reproduction and recruitment were analysed inthe thin-lipped mullet, Liza ramada, collected in Neretva River delta estuary (East A d r i a t i c ,Croatian coastline). The study was based on the collection of a total of 362 individuals on amonthly basis. The von Bertalanffy growth curve parameters were estimated: T L= 59.96 cm,K = 0.269 year- 1, t0= -0.455. Natural mortality was estimated at 0.32 year- 1. Total mortality (Z)was estimated at 0.70 year- 1(range 0.55-0.85 year- 1). Fishing mortality was estimated at0.38year-1and the exploitation ratio at E = 0.54. The gonado-somatic index profile shows a sin-gle peak during the year in October. The sex ratio profile shows skewed sex ratios throughoutthe year except the period prior to reproduction peak. This L. ramadapopulation is suggested tobe in good status

Capture Fisheries and Aquaculture Exploitation in the Aegean Sea Archipelago

The Aegean Sea is an insular archipelago in North Mediterranean Sea. It exhibits 60 inhabited islands, more than 1,400 small islands and more than 2,500 outcrops and rocks. Its total area is in excess of 215,000 km2. Fisheries and aquaculture are the second most important economic activities after tourism, from the point of view of contribution to the national GDP. However, as segments of the primary production, they are more important than tourism for job and income security of the numerous rural fishery-dependent communities in the region, as tourism activity is limited in certain areas and islands. The fishing fleet in the Aegean Sea amounts to 11,580 vessels approximately from which 95% belongs to the smallscale fishery segment and operates from over 100 ports, harbours and fishing refuges on the mainland and the islands. Fisheries production reached almost 69,000 t in 2018. Aquaculture in Greece is a fast developing industry with export orientation. The total national aquaculture production today amounts to 133,000 t of sea bass and sea bream for 2016, compared to 400 t in 1984. Aquaculture production in the Aegean Sea amounts to 83,000 t (63% of total) and fetching approximately 370 million €. From the economic point of view, the fisheries sector in the Aegean Sea faces many challenges. Even though demand for high-quality fishery products is stable and increasing, mainly due to tourism, the market structure is such that net income margins for capture fisheries are low between 8 and 12% at the producer level. Aquaculture suffers from very low prices close or seasonally below production cost levels due to the market competition of aquaculture production of the same species (whole, fresh or chilled sea bass and sea bream) by most Mediterranean States. Finally, fishery product processing industry faces drops in the demand of traditional products in the region (canned in oil, smoked) and low market prices for other types of products (fillets, frozen, etc.) which has forced many companies to diverse their production to vegetables and other local high-market value produce. © Springer Nature Switzerland AG 202

Technical measures without enforcement tools: is there any sense? A methodological approach for the estimation of passive net length in small scale fisheries

Passive nets are currently among the most important fishing gears largely used along the Mediterranean coasts by the small scale fisheries sector. The fishing effort exerted by this sector is strongly correlated with net dimensions. Therefore, the use of passive nets is worldwide managed by defining net length and net drop. The EC Reg. 1967/2006 reports that the length of bottom-set and drifting nets may be also defined considering their weight or volume; however, no practical suggestions for fisheries inspectors are yet available. Consequently,  even if such technical measures are reasonable from a theoretical viewpoint, they are hardly suitable as a management tool, due to the difficulties in harbour control. The overall objective of this paper is to provide a quick methodological approach for the gross estimation of passive net length (by net type) on the basis of net volume. The final goal is to support fisheries managers with suitable advice for enforcement and control purposes. The results obtained are important for the management of the fishing effort exerted by small scale fisheries. The methodology developed in this study should be considered as a first attempt to tackle the tangled problem of net length estimation that can be easily applied in other fisheries and areas in order to improve the precision of the models developed herein

Stakeholder involvement for management of the coastal zone

The European Union (EU) has taken the lead to promote the management of coastal systems. Management strategies are implemented by the Water Framework Directive (WFD) and the Marine Strategy Framework Directive (MSFD), as well as the recent Maritime Spatial Planning (MSP) Directive. Most EU directives have a strong focus on public participation; however, a recent review found that the actual involvement of stakeholders was variable. The “Architecture and roadmap to manage multiple pressures on lagoons” (ARCH) research project has developed and implemented participative methodologies at different case study sites throughout Europe. These cases represent a broad range of coastal systems, and they highlight different legislative frameworks that are relevant for coastal zone management. Stakeholder participation processes were subsequently evaluated at 3 case study sites in order to assess the actual implementation of participation in the context of their respective legislative frameworks: 1) Byfjorden in Bergen, Norway, in the context of the WFD; 2) Amvrakikos Gulf, Greece, in the context of the MSFD; and 3) Nordre Älv Estuary, Sweden, in the context of the MSP Directive. An overall assessment of the evaluation criteria indicates that the ARCH workshop series methodology of focusing first on the current status of the lagoon or estuary, then on future challenges, and finally on identifying management solutions provided a platform that was conducive for stakeholder participation. Results suggest that key criteria for a good participatory process were present and above average at the 3 case study sites. The results also indicate that the active engagement that was initiated at the 3 case study sites has led to capacity building among the participants, which is an important intermediary outcome of public participation. A strong connection between participatory processes and policy can ensure the legacy of the intermediary outcomes, which is an important and necessary start toward more permanent resource management outcomes such as ecological and economic improvement. Integr Environ Assess Manag 2016;12:701–710. © 2016 SETAC. © 2016 SETA