Results 61 to 70 of about 206 (149)

When Methodological Innovation Changes the Game: A 10‐Year Review of Environmental DNA (eDNA) Applied to Crayfish

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 34, Issue 9, September 2024.
ABSTRACT The use of environmental DNA (eDNA) as a tool for monitoring represents a major innovative advance in environmental science, one that enables the detection of species without the need to observe or capture them. This article assesses the state of play of eDNA research targeting crayfish.
Thomas Baudry, Valentin Vasselon, Carine Delaunay, Michael Sweet, Frédéric Grandjean   +4 more
wiley   +1 more source

An investigation on the population parameters of freshwater crayfish (Pontastacus leptodactylus Eschscholtz, 1823) in Lake Yeniçağa (Bolu)

Fisheries & Aquatic Life
This study examines the monthly population parameters of Pontastacus leptodactylus in Lake Yeniçağa, including sex, length, and weight compositions, length-weight relationship, fecundity, morphometry, meat yield, and crayfish plague ratio.
Gençay İrem, Sorguç Bura Uğur, Saygı Yasemin   +2 more
doaj   +1 more source

Meat Yield and Length-Weight Relationship of Freshwater Crayfish (Pontastacus leptodactylus (Eschscholtz, 1823)) Population in Nine Different Inland Water Resources in Turkey

Acta Natura et Scientia, 2020
In this research, length-weight relationships and meat yields of freshwater crayfish (Pontastacus leptodactylus) were investigated in Apolyont Lake, İznik Lake, Manyas Lake, Terkos Lake, Küçükçekmece Lake, Sera Lake, Çıldır Lake, Ulugöl Lake and Eğirdir
Selçuk Berber, Süleyman Akhan, Yusuf Bektaş, Gökhan Kalaycı   +3 more
doaj   +1 more source

Fecundity of the narrow-clawed crayfish Pontastacus leptodactylus in the water bodies of Belarus

Proceedings of the National Academy of Sciences of Belarus, Biological Series, 2023
Pre-larvae hatching fecundity and ovarian fecundity of narrow-clawed crayfish populations were estimated in the lakes and reservoirs of Belarus. Statistically significant differences in the fecundity of females from various water bodies were noted only for Lake Kichino.
openaire   +1 more source

Habitat separation of the crab potamon potamios and the crayfish pontastacus leptodactylus in Lake eğirdir, Turkey

Limnologica, 2019
Abstract Freshwater decapods rarely co-occur. The crab Potamon potamios and the narrow-clawed crayfish Pontastacus leptodactylus complex usually do not share the same pond even if they live in sympatry. An exception, however, is Lake Egirdir (Turkey), where both species are present. The aim of our study was to analyze the distribution patterns of the
Oğuz Yaşar Uzunmehmetoğlu, Miloš Buřič, Kamile Gonca Erol, Remziye Özkök, Şakir Çınar, Pavel Kozák   +5 more
openaire   +2 more sources

Effect of feed and holding conditions on survival and growth of juvenile crayfish Pontastacus leptodactylus and Faxonius limosus

Fisheries & Aquatic Life
In the European natural environment attempts are undertaken to replace invasive crayfish species with native ones. For this purpose, aquaculture of crayfish is required, but their behaviour and the lack of balanced feeds impede further development.
Kropielnicka-Kruk Katarzyna, Ulikowski Dariusz, Wasilewska Agnieszka   +2 more
doaj   +1 more source

The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018

Трансформация экосистем, 2019
The narrow-clawed crayfish, an invasive hydrobiont of Lake Sevan appeared in the lake due to accidental introduction having occupied almost the entire territory of Lake Sevan, finding favorable conditions for its existence.
Evelina Kh. Ghukasyan, Hranush F. Melkonyan, Lilit G. Stepanyan, Norik S. Badalyan   +3 more
doaj   +1 more source

Characterization and phylogenetic analysis of the complete mitochondrial genome of invasive Pontastacus leptodactylus in China

Aquaculture Reports
The spread of invasive crayfish species poses a serious threat to the freshwater ecosystems. However, it is also a chance to enrich the resources for crayfish genetic resource.
Huiyi Cai, Honglin Chen, Huan Zhou, Xiaojun Xu, Wenzhi Guan, Xuping Shentu, Bao Lou   +6 more
doaj   +1 more source

Non-consumptive effects of native, alien and invasive alien crayfish on damselfly egg life history and carry-over effects on larval physiology [PDF]

NeoBiota
Invasive alien (IA) predators pose significant threats to native ecosystems, often leading to profound impacts on prey species through both direct and non-consumptive effects (NCE). This study focused on the NCE of predator-induced stress from one native
Szymon Sniegula, Dorota Konczarek, Maciej Bonk, Andrzej Antoł, Nermeen R. Amer, Robby Stoks   +5 more
doaj   +3 more sources

Standardization of pleopodal egg number in narrow-clawed crayfish ( Pontastacus leptodactylus Eschscholtz, 1823)

Invertebrate Reproduction & Development
In this study, the effects of certain biotic factors (length, presence of lesions) and abiotic factors (month of fishing and fishing area) on pleopodal egg production of Pontastacus leptodactylus (Eschscholtz, 1823) were examined to determine the optimal productivity of spawned female crayfish for aquaculture purposes.
Yıldız Bolat, Mehmet Cilbiz, Bayram Korkmaz   +2 more
openaire   +1 more source