Octopus Pot Research Articles

The octopus pot on the North Atlantic Iberian coast: A plague of plastic on beaches and dunes

This baseline focuses on the octopus pot, a litter item found on the North Atlantic Iberian coast. Octopus pots are deployed from vessels in ropes, with several hundred units, and placed on the seabed, to capture mostly Octopus Vulgaris. The loss of gears due to extreme seas state, bad weather and/or fishing-related unforeseen circumstances, cause the octopus pots contaminating beaches and dunes, where they are transported by sea current, waves and wind actions.This work i) gives an overview of the use of octopus pot on fisheries, ii) analyses the spatial distribution of this item on the coast, and iii) discusses the potential measures for tackling the octopus pot plague on the North Atlantic Iberian coast.Overall, it is urgent to promote conducive policies and strategies for a sustainable waste management of octopus pots, based on Reduce, Reuse and Recycle hierarchical framework.

Values of new ultrasonic imaging methods for the diagnosis of apical Takotsubo syndrome.

Takotsubo syndrome (TTS) is a multifactorial disease contributed to by several pathological factors. It is characterized by transient left ventricular dysfunction, and patients with TTS can spontaneously recover within days or weeks. This study's objective was to investigate the ultrasonic characteristics of TTS during different periods and assess the clinical application value of real-time 3-dimensional echocardiography (RT-3DE) and speckle tracking imaging (STI) in TTS. In this prospective cohort study, the patients with apical TTS were evaluated by echocardiography on admission (within 1-3 days) and after 4 and 8 weeks. RT-3DE was performed to observe the structure and function of the left ventricle (LV). LV end-diastolic volume (LVEDV), end-systolic volume (LVESV), stroke volume (LVSV), and ejection fraction (LVEF) were calculated. The longitudinal peak systolic strain (LPSS) of all LV myocardial segments was acquired by 2D STI. For comparison, 20 healthy individuals were included as normal controls. A total of 16 patients with TTS were included. Their LV was characterized as an "octopus pot" in morphology with obvious hypokinesis on admission. The LVEDV, LVESV, LVSV, and LVEF were 84.23±10.67, 55.94±8.51, 28.31±8.06 mL, and 33.59%±4.12%, respectively, in patients with TTS on admission with a significant difference from those of the controls (P=0.005, P<0.001, P<0.001, and P<0.001, respectively). A definite improvement was found upon follow-up, with these parameters even returning to normal morphology after 8 weeks. The LVEDV, LVESV, LVSV, and LVEF were 75.79±6.86, 28.05±4.33, 47.81±3.57 mL, and 63.02%±3.92%, respectively, in TTS patients after 8 weeks with no significant difference from those of the controls (P=0.907, P=0.235, P=0.162, and P=0.052, respectively). A significant decrease in LPSS was also found in patients with TTS on admission. In the eighth week of follow-up, the LPSS of the apical and middle segments in TTS patients remained significantly decreased compared with that of the normal controls (-18.54%±4.69% vs. -24.29%±3.46%, P<0.001; -19.38%±2.88% vs. -22.36%±3.23%, P<0.001), but that of the basal segments in TTS patients returned to normal and there was no significant differences from the normal controls (-20.75%±2.91% vs. -21.51%±2.85%; P=0.055). RT-3DE and STI played an indispensable role in visually and quantitatively inspecting the abnormalities of patients with TTS, including in diagnosis and follow-up.

A study on the status of octopus pot fishery in the coastal seas of Gyeongbuk, Korea

A study on the status of octopus pot fishery in the coastal seas of Gyeongbuk, Korea

트롤조사에 의한 제주 서쪽 해역에서의 해저 폐기물 조사

This study analyzed distribution density in relation with sea-bed waste at the west fishing grounds of Jeju island by bottom trawl of nine-times in June, August 2019, July, November 2020 and June 2021. Through the 9 times’ survey many sea-bed wastes were collected at the west fishing grounds of Jeju island. The kinds of collected sea-bed waste were the fish traps(42pcs), the octopus pots(3pcs), the eel fish trap(8pcs), the waste nets(6pcs), the fishing lines(2pcs) and so on(27pcs). The total quantity investigated were 88pcs and total weight investigated were 690.4Kg in relation with sea-bed waste of the survey area. The Quantity density in relation with sea-bed waste of the survey area was 30.8pcs/km² and the weight density was 337.4kg/km². Of the total fish traps(50pcs) including the eel fish trip the broken fish trap were 32 traps (64%) and the intact fish trap were 18 traps (36%). As a result of survey of sea-bed waste in the Jeju west fishing grounds were polluted by the sea-bed waste and we need continuous monitoring to get rid of this environment pollution.

Challenge to create a new WAKUWAKU (Passion/Empathy/Agile) foundation by utilizing the concept of co-education and extending the idea of engineering to "the souls of engineers".

In recent years, there has been an "octopus pot" in the area of specialty that has become an issue. To address this issue, we aim to solve the problem by achieving "synthesis" (synthesis) that transcends specialized fields in order to acquire a bird's-eye view.The "purpose, ambition, and curiosity" originating from individual energy, "dialogue" with members of a group and different fields, and "fusion of intersubjectivity" are necessary, and these were understood as “the soul of engineers".The role of the manufacturing industry should be developed as a foundation for co-education. To do this, we would like to transform the company into a place where each engineer can create value, a place where “WAKU-WAKU” (Passion, Empathy, Agile) can take place, and a place where all people involved can grow, based on the concept of “the soul of engineers”.

Detecting stranded macro-litter categories on drone orthophoto by a multi-class Neural Network

The use of Unmanned Aerial Systems (UAS, aka drones) images for mapping macro-litter in the environment have been exponentially increasing in the recent years. In this work, we developed a multi-class Neural Network (NN) to automatically identify stranded plastic litter categories on an UAS-derived orthophoto.The best results were assessed for items that did not have substantial intra-class colour variability, such as octopus pots and fishing ropes (F-score = 61%, on average). Instead, performance was poor (37%) for plastic bottles and fragments, due to their changing intra-class colours. On average, the performance improved 24% when the binary detection (litter/non-litter, F-Score = 73%) was considered, however this approach did not discriminate the litter categories.This work gives a new perspective for the automated litter detection on drone images, suggesting that colour-based approach can be used to improve the categorization of stranded litter on UAS orthophoto.

When Blades broke my heart.

Takotsubo cardiomyopathy (TCM) was first described about 30 years ago. It has been attributed to the sudden catecholamine surge in relation to severe stress, which can cause multi-vessel coronary spasms and myocardial apical ballooning. Football supporters are prone to develop severe stress due to sudden changes in match results. This case presents a football supporter of Sheffield United (the Blades) who was admitted to the hospital with cardiac sounding chest pain following a last minute goal by the opposing team. The necessary investigations were carried out including coronary angiogram and echocardiogram. He was diagnosed with TCM following a left ventricular angiogram demonstrating the typical appearance of the octopus pot.

A basic study on the development of alternative bait for octopus pots

A basic study on the development of alternative bait for octopus pots

Beach-dune morphodynamics and marine macro-litter abundance: An integrated approach with Unmanned Aerial System

This work shows an integrated approach for coastal environmental monitoring, which aimed to understand the relation between beach-dune morphodynamics, marine litter abundance and environmental forcing. Three unmanned aerial system (UAS) flights were deployed on a beach-dune system at the Atlantic Portuguese coast to assess two main goals: (i) quantifying the morphological changes that occurred among flights, with focus on dune erosion, and (ii) mapping the changes of marine macro-litter abundance on the shore.Two most vulnerable-to-erosion sectors of the beach were identified. In the northern sector, the groin affected the downdrift shoreline, with dune erosion of about 1 m. In the central part of the beach, the dunes recessed about 4 m during the winter, being more exposed to environmental forcing due to the absence of dune vegetation.Marine litter occupation area on the beach decreased from 25% to 20% over the winter, with octopus pots (13%) and fragments (69%) being the most abundant items on average. Litter distribution varied in relation to swash elevation, wind speed and direction. With low swash elevation, the wind played a predominant role in moving the stranded items northwards, whereas high swash elevation concentrated the items at the dune foot.This study emphasizes the potential of UAS in allowing an integrated approach for coastal erosion monitoring and marine litter mapping, and set the ground for marine litter dynamic modelling on the shore.

Mapping marine litter on coastal dunes with unmanned aerial systems: A showcase on the Atlantic Coast

Marine litter pollution on coastal dunes has received limited scientific attention when compared with sandy shores. This paper proposes a new framework based on the combined use of Unmanned Aerial Systems (UAS) and a mobile application to map and quantify marine macro-litter (>2.5 cm) accumulation on coastal dunes. The first application on a dune area of 200 m × 80 m at the north-east Atlantic Portuguese coast is shown.Nine different marine litter categories were found, with styrofoam fragments (23% of the total amount) and plastic bottles (20%) being the most abundant items. Plastic was the most common material (76%). The highest number of items (272) was found on the backdune, mostly related with fishing activities (octopus pots and Styrofoam fragments). In contrast, the highest density (0.031 items/m2) was found on the foredune, with the most abundant items associated with human recreational activities (for example, plastic bottles, bags, papers and napkins). Three major marine litter hotspots (~0.1 items/m2) were identified in correspondence of dune blowouts. The recognition of the primary marine litter pathways highlighted the main role that wind and overwash events play on dune contamination, and suggests that the dune ridge restoration can act as a mitigation measure for preventing marine litter accumulation on the backdune.This study shows how UAS offer the possibility of a detailed non-intrusive survey, and gives a new impulse to coastal dune litter monitoring, where the long residence time of marine debris may threaten the bio-ecological equilibrium of these ecosystems.

The luring effect of the sardine bait for octopus pot in laboratory

The luring effect of the sardine bait for octopus pot in laboratory

Takotsubo Cardiomyopathy-Associated Ventricular Standstill in a Peripartum Patient

Takotsubo cardiomyopathy (tako tsubo translates to “octopus pot” in Japanese) is a stress-related cardiomyopathy in which weakening of the cardiac musculature leads to left ventricular failure with apical akinesis and ballooning. Takotsubo Cardiomyopathy is hypothesized to be triggered by emotional stress leading to a catecholamine surge and symptoms that can mimic acute coronary syndrome. It has been well documented that Takotsubo cardiomyopathy can lead to several fatal ventricular arrhythmias. What we describe here is the first reported case of symptomatic ventricular standstill in Takotsubo Cardiomyopathy. We noted persistent failure of the conduction system leading to degeneration of the circuit and ventricular standstill six (6) days after initial presentation. It should be noted that in Takotsubo cardiomyopathy, symptoms typically resolve in approximately 24-48 hours. We suspect that ventricular ballooning impairs the cardiac conduction system such that the AV node and His-Purkinje system can no longer effectively communicate electrical impulses to the remainder of the electrical circuit. In our case, a previously healthy 24-year-old, six-month-postpartum, Egyptian female presented to the ED with complaints consistent with acute coronary syndrome. Multiple syncopal episodes were witnessed and a new right bundle branch block was noted with intermittent complete atrioventricular blocks progressing to a ventricular standstill. Cardiac catheterization and serology was used to rule out other underlying etiologies of this patient’s cardiac symptoms. An emergent transvenous pacemaker was then inserted due to the instability of the patient’s clinical condition leading to placement of a dual-chambered pacemaker. The patient also expressed concerns for returning to breastfeeding her infant son during the course of her hospital stay. During follow-up, the patient has reported no further syncopal episodes and has had no complications since pacemaker placement. Our findings highlight the medical management for prolonged ventricular standstill of the cardiac conduction system in a symptomatic postpartum patient with Takotsubo cardiomyopathy.

Effect of length of buoy line on loss of webfoot octopus pot

Effect of length of buoy line on loss of webfoot octopus pot

Hikaru Sato and Takotsubo cardiomyopathy.

Originally called Takotsubo cardiomyopathy, it is also known as stress cardiomyopathy, stress-induced cardiomyopathy or apical ballooning syndrome ![Graphic][1] ![Graphic][2] Takotsubo disease is thought to have been first described by Dr Hikaru Sato 25 years ago in Japan, during 1991. The Japanese word ‘Takotsubo’ is the name for the ‘octopus pot’ that Japanese fishermen use to catch octopuses. The pot has a round bottom and narrow neck thus trapping the creatures until they are pulled … [1]: /embed/inline-graphic-1.gif [2]: /embed/inline-graphic-2.gif

Selective serotonin-norepinephrine reuptake inhibitors-induced Takotsubo cardiomyopathy

Context:Takotsubo translates to “octopus pot” in Japanese. Takotsubo cardiomyopathy (TTC) is characterized by a transient regional systolic dysfunction of the left ventricle. Catecholamine excess is the one most studied and favored theories explaining the pathophysiology of TTC.Case Report:We present the case of a 52-year-old Hispanic female admitted for venlafaxine-induced TTC with a review literature on all the cases of Serotonin–norepinephrine reuptake inhibitors (SNRI)-associated TTC published so far.Conclusion:SNRI inhibit the reuptake of catecholamines into the presynaptic neuron, resulting in a net gain in the concentration of epinephrine and serotonin in the neuronal synapses and causing iatrogenic catecholamine excess, ultimately leading to TTC.

Echocardiographic assessment of takotsubo cardiomyopathy: beyond apical ballooning.

It has been >25 years since the first report of the takotsubo cardiomyopathy (TC). Although left ventriculography was originally used to depict its typical and impressive wall motion abnormality mimicking "takotsubo", or octopus pot, echocardiography plays a pivotal role in detecting not only its left ventricular (LV) wall motion abnormality, apical ballooning, but also various other findings. First of all, apical ballooning is not an essential finding for TC anymore. Mid-ventricular LV asynergy with or without apical involvement is a basic pattern of the LV wall motion abnormality. Distribution and time course of the asynergy may be best detected by echocardiography and echo provides useful information to differentiate between TC and acute coronary syndrome or acute myocarditis. In addition to the wall motion assessment, echo detects complications of TC such as systolic anterior motion of the mitral leaflet with or without LV outflow obstruction, mitral regurgitation, LV thrombus, right ventricular (RV) involvement. In particular, RV involvement is not an uncommon finding and is associated with worse short-term as well as long-term prognosis. Finally, coronary flow measurements and speckle tracking by echo may offer additional and useful information about pathophysiology and prognosis of TC. In conclusion, echocardiography is a standard imaging modality for detecting various dynamic findings beyond apical ballooning in patients with TC.

Characterizing the complexity of the fleet dynamics for an effective fisheries management: The case of the Cíes Islands (NW Spain)

We analysed the fishing fleet dynamics in the Cies Islands, located in a National Land-Marine Park of Galicia. By interviewing fishers we identified the fleet fishing in the study area and obtained temporal data on effort and catch. Then we performed multivariate analyses of the catch profiles to identify the fishing strategies and their temporal dynamics. Our results highlight the complexity of the fishery system, composed of 565 boats that used 19 fishing gears and 33 strategies in an area of 26.6 km 2 . Octopus and velvet crab pots, gillnets targeting hake, trammel nets targeting European spider crab or ballan wrasse, clam rakes, and hand harvesting of gooseneck barnacles and razor shells are the strategies most used. In addition, most of the boats are generalists and use up to seven different fishing strategies throughout the year. This flexibility of the fleet to change the target species generates a wide diversity of annual fishing patterns that increases the complexity of the fisheries and the difficulty of managing them. The implementation of data collection programmes that include fleet dynamics and spatial data are key factors for developing effective management regulations consistent with the complexity of the system.

Gear Modifications for Fishing Octopus, Octopus vulgaris, on Live-bottom and Adjacent Flat Bottom Habitats in Coastal Waters off North Carolina

The Common Octopus, Octopus vulgaris, is an r-selected mollusk found off the coast of North Carolina that interests commercial fishermen because of its market value and the cost-effectiveness of unbaited pots that can catch it. This study sought to: 1) determine those gear and environmental factors that influenced catch rates of octopi, and 2) evaluate the feasibility of small-scale commercial operations for this species. Pots were fished from August 2010 through September 2011 set in strings over hard and sandy bottom in waters from 18 to 30 m deep in Onslow Bay, N.C. Three pot types were fished in each string; octopus pots with- and without lids, and conch pots. Proportional catch was modeled as a function of gear design and environmental factors (location, soak time, bottom type, and sea surface water temperature) using binomially distributed generalized linear models (GLM’s); parsimony of each GLM was assessed with Akaike Information Criteria (AIC). A total of 229 octopi were caught throughout the study. Pots with lids, pots without lids, and conch pots caught an average of 0.15, 0.17, and 0.11 octopi, respectively, with high variability in catch rates for each pot type. The GLM that best fit the data described proportional catch as a function of sea surface temperature, soak time, and station; greatest proportional catches occurred over short soak times, warmest temperatures, and less well known reef areas. Due to operating expenses (fuel, crew time, and maintenance), low catch rates of octopi, and high gear loss, a directed fishery for this species is not economically feasible at the catch rates found in this study. The model fitting to determine factors most influential on catch rates should help fishermen determine seasons and gear soak times that are likely to maximize catch rates. Potting for octopi may be commercially practical as a supplemental activity when targeting demersal fish species that are found in similar habitats and depth ranges in coastal waters off North Carolina.

Community Fishery Utilization from the Perspective of Internal Assets and the Social System: A Case Study of Octopus Pot Fishing and Free Octopus Pot Fishing in Setonaikai Village-A

Community Fishery Utilization from the Perspective of Internal Assets and the Social System: A Case Study of Octopus Pot Fishing and Free Octopus Pot Fishing in Setonaikai Village-A

Highlights in Clinical Autonomic Neuroscience: Latest discoveries from the octopus pot

Highlights in Clinical Autonomic Neuroscience: Latest discoveries from the octopus pot