Results 81 to 90 of about 4,221 (245)

Different aspects of reproduction strategies in crayfish: A review

open access: yesKnowledge and Management of Aquatic Ecosystems, 2016
Study of the reproductive strategy of crayfish species is of great importance in the current astacological world. Crayfish are among the largest freshwater invertebrates, and as keystone species, they are able to regulate the ...
Yazicioglu B., Reynolds J., Kozák P.
doaj   +1 more source

The use of formaldehyde for the disinfection of maternally incubated eggs of noble crayfish (Astacus astacus)

open access: yesInternational Aquatic Research, 2016
The high mortality of maternally incubated eggs represents a serious problem that prevents the development of noble crayfish (Astacus astacus) farming in Italy.
Benedetto Sicuro
doaj   +1 more source

Startfôr til juvenil edelkreps (Astacus astacus)

open access: yes, 2010
Kasa Krepseoppdrett på Hvaler har valgt å satse på en halvintensiv modell for produksjon av edelkreps. Ved bruk av halvintensiv produksjonsmodell kreves det et egnet fôr til juvenile kreps. Det som har vært vanlig å bruke, er levendefôr ved bruk av Artemia i kombinasjon med vegetabilske næringsstoffer som modnet laug, grodd hvete og potet.
Siikavuopio, Sten Ivar   +2 more
openaire   +1 more source

The effects on some non-enzymatic antioxidants and oxidative stress of Astacus leptodactylus (Esch., 1823) of starvation periods

open access: yes, 2018
This study investigated the effect of starvation (78 days) and refeeding (33 days) on the oxidative stress [malondialdehyde (MDA)] and the non-enzymatic antioxidants [vitamin E (VE), vitamin C (VC), vitamin A (VA), beta carotene (βC) and reduced ...
O. Barim-Oz
semanticscholar   +1 more source

The first large-scale genetic analysis of the vulnerable noble crayfish Astacus astacus reveals low haplotype diversity in central European populations

open access: yesKnowledge and Management of Aquatic Ecosystems, 2011
Major global changes (e.g., human impact or climatic cycles) have a severe impact on the distribution and diversity of species such as the vulnerable European noble crayfish Astacus astacus.
Schrimpf A.   +4 more
doaj   +1 more source

ASSESSMENT OF DNA VARIATIONS OF THE NOBLE CRAYFISH (ASTACUS ASTACUS L.) IN GERMANY AND POLAND USING INTER-SIMPLE SEQUENCE REPEATS (ISSRS)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2004
Conservation of the endangered noble crayfish (Astacus astacus) requires preservation of existing populations and reintroduction into suitable habitats, as currently underway in several regional projects in Germany and Poland.
SCHULZ H. K., ŠMIETANA P., SCHULZ R.
doaj   +1 more source

Microevolution of the noble crayfish (Astacus astacus) in the Southern Balkan Peninsula

open access: yesBMC Evolutionary Biology, 2017
The noble crayfish (Astacus astacus) displays a complex historical and contemporary genetic status in Europe. The species divergence has been shaped by geological events (i.e. Pleistocene glaciations) and humanly induced impacts (i.e.
A. Laggis   +5 more
semanticscholar   +1 more source

High-throughput discrimination of bacteria isolated from Astacus astacus and A. leptodactylus

open access: yesKnowledge and Management of Aquatic Ecosystems, 2014
Bacterial diseases and pathogens of crayfish are common, widespread, and occasionally causing serious mortalities. In order to take rapid measures for correct treatment of crayfish diseases, the turnover time and accuracy in bacterial
Topić Popović N.   +8 more
doaj   +1 more source

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