Results 81 to 90 of about 6,082 (218)

The assessment of the habitat and water quality requirements of the stone crayfish (Austropotamobius torrentium) and noble crayfish (Astacus astacus) species in the rivers from the Anina Mountains (SW Romania)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2011
The species Austropotamobius torrentium and Astacus astacus are two species known in the EU directives to require deeper understanding of their autecologic requirements before any sustainable conservation effort could be successfully applied.
Pârvulescu L.   +2 more
doaj   +1 more source

1871年から2002年末までに発行された郵便切手に描かれた甲殻類 : チェックリスト決定版 [PDF]

open access: yes, 2014
On the occasion of a donation of postage stamps collected by the author to the Museum of Fishery Sciences, Tokyo University of Marine Science and Technology, a checklist of all postage stamps depicting crustaceans from 1871 through 2002 has been ...
Makoto Omori, 大森 信
core   +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

Growth and population dynamics of crayfish Paranephrops planifrons in streams within native forest and pastoral land uses [PDF]

open access: yes, 2002
Population dynamics of crayfish (Paranephrops planifrons White) in streams draining native forest and pastoral catchments, Waikato, New Zealand, were investigated from September 1996 to July 1998.
Collier, Kevin J.   +2 more
core   +1 more source

New records of suctorians (Ciliophora: Suctoria) as epibionts of aquatic true bugs (Hemiptera: Prosorrhyncha: Nepomorpha) from two regions: Mexico and Eastern Europe [PDF]

open access: yes, 2011
Here, we provide new records of suctorians (Ciliophora: Suctoria), epibionts of aquatic true bugs (Hemiptera: Prosorrhyncha: Nepomorpha) collected in Ukraine, Belarus and Mexico.
Dovgal, I. V.   +2 more
core   +1 more source

ESTIMATION OF NOBLE CRAYFISH (ASTACUS ASTACUS L.) POPULATION SIZE IN THE VELIKA PAKLENICA STREAM (CROATIA)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2004
Astacus astacus is one of four native European crayfish species living in Croatian freshwaters. It is naturally distributed in rivers belonging to the Black Sea Basin.
MAGUIRE I., HUDINA S., ERBEN R.
doaj   +1 more source

Получение сеголетка длиннопалого рака в садках на сбросной подогретой воде теплоэлектростанции [PDF]

open access: yes, 2013
Длиннопалый рак (Astacus leptodactylus Esch.) является важным ресурсным видом водоемов нашей страны. Традиционно эти десятиногие ракообразные ценятся на внутреннем и особенно на мировом рынке как превосходный деликатесный продукт питания, а также ...
Алехнович, Анатолий Васильевич   +2 more
core  

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

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 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

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