Variação sazonal dos parâmetros parasitológicos e hematológicos da garoupa verdadeira Epinephelus marginatus (Lowe, 1834) (Teleostei: Serranidae) selvagem e cultivada em Ubatuba, São Paulo, Brasil

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Aquicultura, Florianópolis, 2011O objetivo deste estudo foi avaliar a influência da sazonalidade nas características hematológicas e parasitológicas da garoupa verdadeira Epinephelus marginatus selvagem e cultivada em Ubatuba, SP, Brasil. Foram realizadas análises hematológicas e parasitológicas de 159 peixes, sendo 20 espécimes selvagens e 20 cultivados em cada estação do ano. Pseudorhabdosynochus beverleyburtonae foi o parasito mais abundante, com as maiores intensidades e dominância relativa média em todas as estações. Neobenedenia melleni foi observado em todas as estações, com aumento gradativo do número de parasitos das estações mais frias para as mais quentes e maiores prevalências e intensidades médias no verão. Helicometrina nimia, com exceção dos peixes selvagens no verão foi encontrado em todas as estações. Pseudempleurosoma sp. e larvas de Contracaecum sp. apresentaram prevalências baixas e ocorreram em peixes selvagens e cultivados no outono e primavera, respectivamente. Os maiores valores no percentual de hematócrito em peixes de cultivo, contagem total de eritrócitos e leucócitos nos peixes de ambas as origens, redução no número de trombócitos em peixes selvagens e de linfócitos nos peixes cultivados, além das maiores prevalências e intensidades médias de infecção por N. melleni ocorreram no verão. No outono, ocorreram as maiores intensidades médias de infecção por P. beverleyburtonae nos peixes de ambas as origens, além da maior contagem total de trombócitos em peixes selvagens, redução no número de linfócitos e aumento no número de monócitos nos peixes cultivados. Estes resultados sugerem que N. melleni possui maior influência sobre as características sanguíneas da garoupa verdadeira quando comparado a P. beverleyburtonae e que altas intensidades de parasitos potencialmente patogênicos podem favorecer surtos de doenças em condições de cultivo desta espécie

A Perspective Around Cephalopods and Their Parasites, and Suggestions on How to Increase Knowledge in the Field

Although interest in several areas of cephalopod research has emerged over the last decades (e.g., neurobiology, aquaculture, genetics, and welfare), especially following their 2010 inclusion in the EU Directive on the use of animals for experimental purposes, knowledge regarding the parasites of cephalopods is lacking. Cephalopods can be intermediate, paratenic, or definitive hosts to a range of parasites with a wide variety of life cycle strategies. Here, we briefly review the current knowledge in cephalopod parasitological research, summarizing the main parasite groups that affect these animals. We also emphasize some topics that, in our view, should be addressed in future research, including: (i) better understanding of life cycles and transmission pathways of common cephalopod parasites; (ii) improve knowledge of all phases of the life cycle (i.e., paralarvae, juveniles, adults and senescent animals) and on species from polar deep sea regions; (iii) exploration of the potential of using cephalopod-parasite specificity to assess population boundaries of both, hosts and parasites; (iv) risk evaluation of the potential of standard aquacultural practices to result in parasite outbreaks; (v) evaluation and description of the physiological and behavioral effects of parasites on their cephalopod hosts; (vi) standardization of the methods for accurate parasite sampling and identification; (vii) implementation of the latest molecular methods to facilitate and enable research in above mentioned areas; (viii) sharing of information and samples among researchers and aquaculturists. In our view, addressing these topics would allow us to better understand complex host-parasite interactions, yield insights into cephalopod life history, and help improve the rearing and welfare of these animals in captivity

Out-of-plane Characterization of Silicon-on-insulator Multiuser MEMS Processes-based Tri-axis Accelerometer

In this paper, we discuss the analysis of out-of-plane characterization of a capacitive tri-axis accelerometer fabricated using SOI MUMPS (Silicon-on Insulator Multi user MEMS Processes) process flow and the results are compared with simulated results. The device is designed with wide operational 3 dB bandwidth suitable for measuring vibrations in industrial applications. The wide operating range is obtained by optimizing serpentine flexures at the four corners of the proof mass. The accelerometer structure was simulated using COMSOL Multiphysics and the displacement sensitivity was observed as 1.2978 nm/g along z-axis. The simulated resonant frequency of the device was found to be 13 kHz along z axis. The dynamic characterization of the fabricated tri-axis accelerometer produces the out-of-plane vibration mode frequency as 13 kHz which is same as the simulated result obtained in z-axis

Sustainability toolkit for cephalopod fisheries: Cephs & Chefs Project

Sem resumo disponível.publishe

Disentangling global market drivers for cephalopods to foster transformations towards sustainable seafood systems

21 pages, 11 figures, 1 table.-- Open accessAquatic food systems are important contributors to global food security to satisfy an intensifying demand for protein-based diets, but global economic growth threatens marine systems. Cephalopod (octopus, squid and cuttlefish) fisheries can contribute to food security; however, their sustainable exploitation requires understanding connections between nature's contributions to people (NCP), food system policies and human wellbeingThe authors acknowledge the financial support from the Cephs and Chefs Project (https://www.cephsandchefs.com/) funded by the European Regional Development Fund (https://ec.europa.eu/regional_policy/en/funding/erdf/) through the Interreg Atlantic Area Programme grant number EAPA_282/2016. CP, TF, KR and DC acknowledge financial support to CESAM by Fundação para a Ciência e a Tecnologia/MCTES (UIDP/50017/2020 + UIDB/50017/2020 + LA/P/0094/2020), through national funds. CP acknowledges the Fundação para a Ciência e a Tecnologia research contract 2020.02510. CEECIND and the Swedish International Development Cooperation Agency (SIDA). SV and PP acknowledge financial support from the Xunta de Galicia (https://www.xunta.gal/portada) (RECREGES II project under Grant 1400 ED481B2018/017 and Grupo de Referencia Competitiva GI-2060 AEMI, under Grant 1401 ED431C2019/11)Peer reviewe

Cephalopod Fisheries in European waters: stock assessment, forecasting and management

4th International Congress on Applied Ichthyology, Oceanography and Aquatic Environment. Hydromedit, Virtual, 4-6 November 2021N

Market opportunities for octopus in the Atlantic area: Cephs & Chefs: summary of main achievements

Sem resumo disponível.INTERREG Atlantic Area (EAPA 282/2016)publishe

Identifying sustainability priorities among value chain actors in artisanal common octopus fisheries

The United Nations (UN) Decade of Ocean Science highlights a need to improve the way in which scientific results effectively inform action and policies regarding the ocean. Our research contributes to achieving this goal by identifying practical actions, barriers, stakeholder contributions and resources required to increase the sustainability of activities carried out in the context of artisanal fisheries to meet UN Sustainable Development Goals (SDG) and International Year of Artisanal Fisheries and Aquaculture (IYAFA) Global Action Plan (GAP) Pillar targets. We conducted a novel ‘social value chain analysis’ via a participatory workshop to elicit perspectives of value chain actors and fisheries stakeholders associated with two Spanish artisanal common octopus (Octopus vulgaris) fisheries (western Asturias—Marine Stewardship Council [MSC] certified, and Galicia—non-MSC certified) about their priorities regarding sustainable octopus production and commercializationOpen Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The authors acknowledge the financial support from the Cephs and Chefs Project (https://www.cephsandchefs.com/) funded by the European Regional Development Fund (https://ec.europa.eu/regional_policy/en/funding/erdf/) through the Interreg Atlantic Area Programme grant number EAPA_282/2016. CP, TF, KR and DC would also like to acknowledge financial support to CESAM by FCT/MCTES (UIDP/50017/2020 + UIDB/50017/2020 + LA/P/0094/2020), through national funds. CP acknowledges the FCT research contract 2020.02510.CEECIND. SV and PP acknowledge the financial support from the Xunta de Galicia (https://www.xunta.gal/portada) (RECREGES II project under Grant 1400 ED481B2018/017 and Grupo de Referencia Competitiva GI-2060 AEMI, under Grant 1401 ED431C2019/11). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscriptS

Management for sustainable cephalopod fisheries in Europe: review and recommendations

Although cephalopod fisheries are of world-wide importance, in Europe catching cephalopods is managed only in small-scale fisheries, at national level, and few stocks are formally assessed. Because cephalopods are not quota species under the EU’s Common Fisheries Policy, there is currently no requirement for assessment or management at European level. Given increasing interest in targeting cephalopods in Europe, there is a risk that they will be fished unsustainably. Although there have been recent review papers on progress in stock assessment and fishery forecasting for commercially fished cephalopods there has been no recent review of cephalopod fishery management. We aim to fill this gap, with a particular focus on European cephalopod fisheries.We review potential barriers to sustainable fishing and reasons why management of cephalopod fisheries differs from that for finfish fisheries, e.g. due to the high inherent volatility and the possibly cyclic nature of year-to-year variation in cephalopod abundance, reflecting their short lifespan, rapid growth and high sensitivity to environmental conditions. We review fishery management approaches in important cephalopod fisheries worldwide (e.g. in the USA, Japan, Falklands, South Africa, Australia and Russia) and current management of small-scale cephalopod fisheries in Europe. We identify knowledge gaps and limitations to current monitoring programmes and stock assessments and discuss the options available for cephalopod fishery management in Europe, considering the suitability or otherwise of catch and effort limits, use of closed areas and seasons, restrictions on sizes caught and types of fishing gear, and the ole of market-based sustainability pathways.info:eu-repo/semantics/publishedVersio

Our waves in the ocean: Projects for marine conservation and sustainable fisheries

Poster.-- Close Encounters IIM (2nd Kind) Virtual Conference, 26th February 2021N