Seasonal development and pathological changes associated with the parasitic nematode Philometroides sanguineus in wild crucian carp Carassius carassius (L.) in England

Pathological changes associated with the parasitic nematode Philometroides sanguineus (Rudolphi, 1819) are described for the first time from observations of infections in wild crucian carp Carassius carassius (L.) in England. The damage caused by P. sanguineus was influenced strongly by host size, parasite development and the seasonal migrations of female nematodes within host tissues. Male and unfertilized female nematodes located on the swim-bladder wall caused only minor, localized changes. In contrast, the migration of gravid female nematodes into the fins during autumn provoked an acute inflammatory response comprising neutrophils, eosinophils and lymphocytes. This was accompanied by fin distortion, swelling of the dorsal and caudal tissues, degenerative changes and localized oedema. The encapsulation of female nematodes in connective tissue throughout winter limited additional tissue damage. The emergence of gravid nematodes from the fins in spring to facilitate larval dispersal caused necrosis, hyperplasia and loss of skin integrity. This activity was again accompanied by acute inflammatory reactions. Pathological changes were more severe in crucian carp measuring less than 60 mm in length, with no signs of debilitation in larger fish. These observations suggest that any impact of P. sanguineus is strictly seasonal and may be limited to fry. Lesions caused by this parasite, only recently recorded in Britain, may represent an additional pressure upon wild crucian carp populations already threatened by hybridization, competition and habitat loss

Salmonidae diseases in cage breeding in sea and fresh water.

Three years data on salmonidae diseases study (rainbow trout, sea trout, coho salmon, pink salmon, and Baltic and steelhead trout) are represented in the article. In the time of salmonidae breeding in sea water the main danger lies in infectious vibrio disease with Vibrio anguillarum as its agent of infection. Considerably more rarely the infectious diplostomatosis desease occurs (agent of infection-Diplostomum sp.). During cage breeding of fish in fresh water lakes certain infective deseases, such as diplosto-mose, ergasilosis (agent of infection-Ergasilus sieboldi) and argulosis (agent of in-fection-Argulus foliaceus cause damage. Such parasites as Apiosoma sp., Epistylis sp., Chilodonella cyprini, Trichodina sp., Trichodinella sp., Ichthyophthirius multifiliis, Gyrodactylus sp., Cystidicola farionis, Piscicola geometra were met not so often. Besides, the diseases of nonparasitic character may be the cause of fishes death. Among them - avitaminosis and ceroid degeneration of the liver, arising as the result of usage of low-grade and defective feeds.3. ausgabe des sonderheftes über fischereiliche untersuchungen der DDR und der UDSSR in der Ostsee. 3. выпуск совместного сборника научных статей по вопросам рыбохозяйственных исследований ГДР и СССР в Балтийском море.Publishe

Заболевание угря ихтиофтириозом и методы его лечения

The pathogenic organism (Ichthyophthirius multifiliis Fouguet, 1876) is widely distributed among freshwater fish. It was established that the disease was one of the most dangerous eel Anguilla anguilla diseases in Latvia. The bath of 0.9 % solution of sodium chloride was recommended as the most effective remedy against the disease.PublishedNot Know

О заболевании сырти (Vimba vimba L.)

The symptoms of ulcerous disease in vimba bream (Vimba vimba) are described. 768 fish was subjected to ichthyological analysis and the external parasitological examination, 20 - to the full parasitological investigation and two to bacteriological study. It was not excluded that the cause of the ulcerous disease could be the pollution of rivers and the estuarine areas of the Gulf of Riga with sewage waters. It was established that in vimba bream the ulcer was the strongest expressed during the spawning period. Mainly spent individuals were affected. In lesser extent the disease was found in summer and autumn. The pathogenic organism was not found.PublishedNot Know

Robotic System for Post Office Package Handling

Parcel sorting is becoming a significant challenge for delivery distribution centers and is mostly automated by using high-throughput sorting machinery, but manual work is still used to feed these machines by placing the parcels on the conveyor belt. In this paper, an AI-based robotic solution that automates the parcel placement task was developed. The architecture of the proposed system along with methods on how to implement it are described by using the currently available hardware and software components. The described choices lead to a well-functioning system and the gained insights will facilitate building similar systems for parcel delivery automation

Towards Open-Set NLP-Based Multi-Level Planning for Robotic Tasks

This paper outlines a conceptual design for a multi-level natural language-based planning system and describes a demonstrator. The main goal of the demonstrator is to serve as a proof-of-concept by accomplishing end-to-end execution in a real-world environment, and showing a novel way of interfacing an LLM-based planner with open-set semantic maps. The target use-case is executing sequences of tabletop pick-and-place operations using an industrial robot arm and RGB-D camera. The demonstrator processes unstructured user prompts, produces high-level action plans, queries a map for object positions and grasp poses using open-set semantics, then uses the resulting outputs to parametrize and execute a sequence of action primitives. In this paper, the overall system structure, high-level planning using language models, low-level planning through action and motion primitives, as well as the implementation of two different environment modeling schemes—2.5 or fully 3-dimensional—are described in detail. The impacts of quantizing image embeddings on object recall are assessed and high-level planner performance is evaluated using a small reference scene data set. We observe that, for the simple constrained test command data set, the high-level planner is able to achieve a total success rate of 96.40%, while the semantic maps exhibit maximum recall rates of 94.69% and 92.29% for the 2.5d and 3d versions, respectively

Human–Robot Collaboration Trends and Safety Aspects: A Systematic Review

Smart manufacturing and smart factories depend on automation and robotics, whereas human–robot collaboration (HRC) contributes to increasing the effectiveness and productivity of today’s and future factories. Industrial robots especially in HRC settings can be hazardous if safety is not addressed properly. In this review, we look at the collaboration levels of HRC and what safety actions have been used to address safety. One hundred and ninety-three articles were identified from which, after screening and eligibility stages, 46 articles were used for the extraction stage. Predefined parameters such as: devices, algorithms, collaboration level, safety action, and standards used for HRC were extracted. Despite close human and robot collaboration, 25% of all reviewed studies did not use any safety actions, and more than 50% did not use any standard to address safety issues. This review shows HRC trends and what kind of functionalities are lacking in today’s HRC systems. HRC systems can be a tremendously complex process; therefore, proper safety mechanisms must be addressed at an early stage of development.</jats:p

Human–Robot Collaboration Trends and Safety Aspects: A Systematic Review

Smart manufacturing and smart factories depend on automation and robotics, whereas human–robot collaboration (HRC) contributes to increasing the effectiveness and productivity of today’s and future factories. Industrial robots especially in HRC settings can be hazardous if safety is not addressed properly. In this review, we look at the collaboration levels of HRC and what safety actions have been used to address safety. One hundred and ninety-three articles were identified from which, after screening and eligibility stages, 46 articles were used for the extraction stage. Predefined parameters such as: devices, algorithms, collaboration level, safety action, and standards used for HRC were extracted. Despite close human and robot collaboration, 25% of all reviewed studies did not use any safety actions, and more than 50% did not use any standard to address safety issues. This review shows HRC trends and what kind of functionalities are lacking in today’s HRC systems. HRC systems can be a tremendously complex process; therefore, proper safety mechanisms must be addressed at an early stage of development

Correction: Racinskis et al. Towards Open-Set NLP-Based Multi-Level Planning for Robotic Tasks. <i>Appl. Sci.</i> 2024, <i>14</i>, 10717

In the original publication [...