Results 21 to 30 of about 177 (131)

Natural Biota’s Contribution to Cultured Aquatic Animals’ Growth in Aquaculture Cannot Be Ignored

Aquaculture Research, Volume 2023, Issue 1, 2023., 2023
The rapid expansion of the aquaculture industry is accompanied by high organic and nutrient loadings from formulated feeds. This leads to water deterioration and pathogenic microorganisms. Natural biota (e.g., bacteria, phytoplankton, zooplankton, and zoobenthos) in ponds form important parts of cultured aquatic animals’ diets.
Shiyu Jin, Qingling Kong, Chibuike Kemdi John, Zhaoyu Wang, Tanglin Zhang, Xiangqian Li, Xiaoyan Zhu, Jing Li, Yan Luo, Mengyu Qian, Feifei Chen, Xiaolong Kong, Dangen Gu, Si Luo, Daniel L. Merrifield   +14 more
wiley   +1 more source

Suitability of Natura 2000 sites for threatened freshwater species under projected climate change

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 32, Issue 12, Page 1872-1887, December 2022., 2022
Abstract As part of the world's largest coordinated network of protected areas, Natura 2000, European Union member states designate special areas of conservation (SACs) to maintain or achieve favourable conservation status for imperilled aquatic species listed under Annex II of the Habitats Directive.
Timo Basen, Christoph Chucholl, Sarah Oexle, Albert Ros, Alexander Brinker   +4 more
wiley   +1 more source

First record of the stone crayfish in the Romanian lowlands

Knowledge and Management of Aquatic Ecosystems, 2021
The stone crayfish is a native European freshwater species with significant population declines caused by anthropogenic pressure onto its habitats, climate change and spreading of non-indigenous invasive crayfish and their pathogens (e.g., Aphanomyces ...
Groza Marius-Ioan, Cupșa Diana, Lovrenčić Leona, Maguire Ivana   +3 more
doaj   +1 more source

Conservation genetics study of huchen in Slovenia recommends river system‐based management and indicates self‐sustainability of the middle Sava population

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 32, Issue 7, Page 1171-1183, July 2022., 2022
Abstract The middle part of the Sava River in Slovenia provides one of the longest free‐flowing habitats for huchen, a threatened species that is also protected by the European Habitats Directive. However, there are plans for the construction of a chain of hydropower plants along this stretch of river.
Aleš Snoj, Jernej Bravničar, Daša Zabric, Simona Sušnik Bajec   +3 more
wiley   +1 more source

Cytology, function and dynamics of stem and progenitor cells in decapod crustaceans

Biological Reviews, Volume 97, Issue 2, Page 817-850, April 2022., 2022
ABSTRACT Stem cells play key roles in development, tissue homeostasis, regeneration, ageing and diseases. Comprehensive reviews on stem cells are available for the determinately growing mammals and insects and some lower invertebrates like hydra but are rare for larger, indeterminately growing invertebrates that can live for many decades.
Günter Vogt
wiley   +1 more source

The amount of environmental DNA increases with freshwater crayfish density and over time

Environmental DNA, Volume 4, Issue 2, Page 417-424, March 2022., 2022
Although several assays for the detection of freshwater crayfish have been published, comparably little is known on the relationship between eDNA concentration and crayfish population densities, a pre‐requisite for estimating population size from eDNA measurements.
Daniela Sint, Bernhard Kolp, Oskar Rennstam Rubbmark, Leopold Füreder, Michael Traugott   +4 more
wiley   +1 more source

Morphometric characteristics and condition indices of stone crayfish Austropotamobius torrentium (Shrank, 1803) from the Mlinska River [PDF]

Agroznanje, 2022
Regarded as a protected species on the IUCN list of endangered species, and classified as data deficient species, the stone crayfish (Austropotamobius torrentium) is one of the five European species from the Astacidae family that lives in freshwater ...
Roljić Rajko, Dekić Radoslav, Hadžiahmetović-Jurida Elvira, Adrović Avdul, Nikolić Vera   +4 more
doaj   +1 more source

DISTRIBUTION OF CRAYFISH IN SALZBURG, AUSTRIA

Knowledge and Management of Aquatic Ecosystems, 2005
Mapping of crayfish populations in the province of Salzburg was carried out in the years 2002 and 2003. Five crayfish species were found, two of them native: Astacus astacus and Austropotamobius torrentium, and three foreign: Astacus leptodactylus ...
PATZNER R. A., LANGMAIER S., SCHACHERL S., STRASSER A., ZICK D.   +4 more
doaj   +1 more source

Cross-amplification of microsatellite loci in the endangered stone-crayfish Austropotamobius torrentium (Crustacea: Decapoda)

Knowledge and Management of Aquatic Ecosystems, 2011
The major aim of this study is to describe the first microsatellite loci for the stone-crayfish (Austropotamobius torrentium), by cross-species amplification.
Iorgu E.I., Popa O.P., Petrescu A.-M., Popa L.O.   +3 more
doaj   +1 more source

DISTRIBUTION AND REPRODUCTIVE BIOLOGY OF AUSTROPOTAMOBIUS TORRENTIUM IN BAVARIA AND DOCUMENTATION OF A CONTACT ZONE WITH THE ALIEN CRAYFISH PACIFASTACUS LENIUSCULUS

Knowledge and Management of Aquatic Ecosystems, 2005
In Bavarian freshwater systems, the stone crayfish Austropotamobius torrentium is still present in many headwaters of Danubian tributaries. Since the 1960s an alien species, the signal crayfish Pacifastacus leniusculus, was introduced several times ...
HUBER M. G.J., SCHUBART C. D.
doaj   +1 more source