Article
Biodiversity Conservation
Michael Oliewo Aluma, Lilian Pukk, Margo Hurt, Katrin Kaldre
Summary: Invasive non-indigenous crayfish species pose a significant threat to native crayfish populations in European freshwater ecosystems. The presence of signal crayfish, marbled crayfish, and spiny-cheek crayfish in Estonia has increased the risk of extinction for the native noble crayfish. This study provides an overview of the status, distribution, and impacts of these invasive species on native crayfish populations, as well as the effectiveness of trapping in controlling their abundance.
Article
Multidisciplinary Sciences
Leona Lovrencic, Martina Temunovic, Riho Gross, Marin Grgurev, Ivana Maguire
Summary: The noble crayfish, an indigenous European freshwater species, is facing significant declines in population due to human activities, climate change, and invasive species. A study combining population genetics and species distribution modelling revealed the impact of climate change on the species and highlighted the need for effective conservation measures. The study found that Croatian populations of the noble crayfish harbor important genetic diversity but are predicted to experience substantial reductions in suitable habitats in the future. The results emphasize the importance of identifying and protecting areas with high conservation value, as well as considering assisted migration and repopulation approaches to preserve genetic diversity.
SCIENTIFIC REPORTS
(2022)
Article
Zoology
Tatiana Zingre, Simone Roberto Rolando Pisano, Nicole Wildi, Kara Lynne Dianne Dawson, Elodie Cristina, Torsten Seuberlich, Heike Schmidt-Posthaus
Summary: European native crayfish populations are declining due to environmental factors and the introduction of competitive non-native species. This study discovered 11 novel RNA viruses in wild noble crayfish populations in Switzerland through high-throughput sequencing.
JOURNAL OF INVERTEBRATE PATHOLOGY
(2023)
Article
Multidisciplinary Sciences
Ivo Roessink, Karina A. E. van der Zon, Sophie R. M. M. de Reus, Edwin T. H. M. Peeters
Summary: This study examines the impact of crayfish plague on the interaction between noble crayfish and invasive species. The results show that noble crayfish has an advantage over invasive species in agonistic behavior and shelter competition. Therefore, if crayfish plague no longer eradicates noble crayfish populations in the future, noble crayfish still has the potential to succeed in competition with invasive species.
Article
Fisheries
Panagiotis A. Pantazis, John Ch Karamaligas, Vassiliki Xydia, George Papadomichelakis
Summary: Continuous environmental disturbances and the crayfish plague have had a negative impact on freshwater crayfish populations in Greece. This study aims to investigate the optimal husbandry and dietary requirements for Astacus astacus in culture conditions. The results showed that feeding the crayfish a semipurified diet led to weight gain and acceptable survival rates, but there were differences in the fatty acid composition compared to a previous experiment.
JOURNAL OF SHELLFISH RESEARCH
(2022)
Article
Environmental Sciences
Johan Dannewitz, Stefan Palm, Lennart Edsman
Summary: The noble crayfish is an endangered freshwater species in Europe primarily threatened by the crayfish plague spread by North American crayfish species. A large-scale genetic study revealed three main genetic clusters in the Fennoscandian peninsula, with higher genetic diversity in the southern cluster. The genetic structure reflects past colonizations and human translocations, providing important insights for conservation and management efforts.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Fisheries
Ioannis Karaouzas, Ioannis Leris, Yiannis Kapakos, Nektarios Kalaitzakis, Konstantinos Fytilis, Petros Kouraklis, Eleni Kalogianni
Summary: This study presents the first record of the noble crayfish Astacus astacus in Euboea Island, Greece, expanding its geographical range and highlighting the need for immediate conservation actions to protect this vulnerable population.
KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS
(2022)
Article
Environmental Sciences
Mirac Uckun
Summary: Exposure to BPA for 96 hours resulted in significant changes in various biomarkers in Astacus leptodactylus, indicating toxic effects. This suggests that BPA may pose a serious threat to aquatic ecosystems and public health.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Amin Gholamhosseini, Mahdi Banaee, Antoni Sureda, Nooh Timar, Amir Zeidi, Caterina Faggio
Summary: Aquatic organisms, specifically freshwater crayfish, were exposed to different concentrations of polyethylene microplastics (PE-MPs), and the effects on biochemical parameters, hematological indicators, and oxidative stress were observed. The results showed that exposure to PE-MPs led to changes in enzyme activity, glucose and malondialdehyde levels, as well as triglyceride, cholesterol, and total protein levels. Temperature variations also had a significant effect on hematological indicators.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2023)
Article
Environmental Sciences
Aysegul Mulayim, Levent Bat, Aysah Oztekin, Serda Kecel Gunduz, Elif Yucedag, Bilge Bicak
Summary: This study revealed for the first time in Turkey the microplastic contamination in the sediment and crayfish of Durusu Lake, providing insights into the transmission of this contamination to biota. The main identified polymers were polypropylene and polyphenylene sulfide in crayfish samples, and polypropylene and polyvinyl alcohol in sediment samples. It is necessary to control anthropogenic and fisheries-related pollution in the lake.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Reproductive Biology
Kai Lehmann, Johann Torno, Helmut Jeske, Heinz Brendelberger
Summary: The study showed that extended cold periods, particularly at 38 days, during artificial incubation of noble crayfish eggs led to higher survival rates and wet weight, resulting in better performance in subsequent rearing experiments. This suggests that dormancy of the eggs represents a true diapause regulated solely by temperature.
INVERTEBRATE REPRODUCTION & DEVELOPMENT
(2021)
Article
Environmental Sciences
Stephan S. W. Ende, Vanessa Fuchs, Marcel Machnik, Annabel Schuhn, Christiane von der Marwitz, Andrea Wirtz, Matthew James Slater, Joachim Henjes
Summary: The study revealed that European Noble crayfish fed with pelleted fish feed exhibited superior growth performance in terms of final body weight, body length, and survival rate compared to those fed with other types of feeds.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Fisheries
Maartje Oostdijk, Griffin Carpenter
Summary: To prevent overfishing of marine fish populations, governments often restrict fishing access by allocating fishing opportunities, but it remains unclear which attributes of fishing opportunities are associated with sustainable fishing. Our study found that quota limits and individual allocation are linked to a reduced probability of overfishing, but no attributes were robustly associated with reducing overfished biomass. Previous studies have shown that market-based systems or strong property rights may lead to sustainable fishing, but these benefits were small or insignificant once proper controls for other system attributes were introduced.
FISH AND FISHERIES
(2022)
Article
Engineering, Civil
Oliver Koit, Cyril Mayaud, Blaz Kogovsek, Marko Vainu, Jaanus Terasmaa, Andres Marandi
Summary: Karst aquifers are an important source of domestic groundwater in Estonia. This study focused on two lowland karst systems and their interaction with the hosting karst aquifer. The research found that the hydrology and hydraulics of these systems were influenced by factors such as evapotranspiration, snow deposition, and snowmelt floods. The solute transport characteristics varied significantly due to differences in the structure and maturity of karst porosity.
JOURNAL OF HYDROLOGY
(2022)
Article
Food Science & Technology
Samime Ozturan, Gulgun F. Unal Sengor
Summary: The effects of three different cooking methods on the quality and shelf life of crayfish during chilled storage were investigated. The results showed that sous vide and boiled cooking methods had minimal impact on the sensory quality of crayfish, while microwaved cooking method was not ideal.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2022)