Results 51 to 60 of about 453 (163)

Analysis of chitinase expression in the crayfish plague fungus Aphanomyces astaci [PDF]

open access: yesDiseases of Aquatic Organisms, 2002
Chitinase, as determined by enzymatic activity in the growth medium and by transcription of the chitinase gene AaChi1, is expressed at a high level during vegetative growth of the crayfish pathogen Aphanomyces astaci and expression is not further stimulated by chitin. Expression is not detected in zoospores and it does not increase to high levels until
M Gunnar, Andersson, Lage, Cerenius
openaire   +2 more sources

Molecular Characterisation of Endangered White‐Clawed Crayfish Populations in Southern Switzerland

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 3, March 2026.
ABSTRACT This study investigates the phylogeography of the endangered European White‐Clawed Crayfish (WCC) Austropotamobius pallipes species complex in the main tributaries of the Po River basin in southern Switzerland and northern Italy, a diversity hotspot for this species.
Sebastian Prati   +3 more
wiley   +1 more source

LONG TERM STUDY OF COMPETITION BETWEEN TWO CO-OCCURRING CRAYFISH SPECIES, THE NATIVE ASTACUS ASTACUS L. AND THE INTRODUCED PACIFASTACUS LENIUSCULUS DANA, IN A FINNISH LAKE.

open access: yesKnowledge and Management of Aquatic Ecosystems, 2001
Since 1893, crayfish plague, Aphanomyces astaci Schikora, has devastated Finland’s most productive populations of the native noble crayfish, Astacus astacus, causing great losses to once very valuable fisheries and exports.
WESTMAN K., SAVOLAINEN R.
doaj   +1 more source

The gut microbiome promotes the growth performance of black soldier fly larvae by detoxifying uric acid

open access: yesiMetaOmics, Volume 3, Issue 1, March 2026.
This study demonstrates the detrimental effects of exogenous uric acid (UA) on the growth of black soldier fly (BSF) larvae, highlighting the role of gut microbiota in UA degradation. We isolated UA‐degrading bacterial strains associated with BSF, including Enterococcus faecalis AHAU24.
Xiaowen Ji   +12 more
wiley   +1 more source

Commentary: Trends and Tensions in Freshwater and Fisheries Management in Central Otago, New Zealand

open access: yesNew Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 1, March 2026.
Recent resource management planning processes and decisions in Central Otago, New Zealand, illustrate changes in policy direction for freshwater management. These processes and decisions also highlight interactions between, and values associated with, indigenous and introduced sports fish.
Harvey C. Perkins, Niall R. N. Watson
wiley   +1 more source

Economic incentives contribute little to reducing agricultural damage from invasive non‐native species: evidence from raccoon management in Hokkaido, Japan

open access: yesPest Management Science, Volume 82, Issue 3, Page 2588-2594, March 2026.
This study reveals the nonsignificant effects of economic incentives reducing crop damage by raccoons. Our results also show that while these incentives increase the number of captured raccoons, the additional captures fail to result in measurable reductions in agricultural damage. Abstract BACKGROUND An economic incentive scheme is utilized to enhance
Kota Mameno   +4 more
wiley   +1 more source

Devouring the Invaders: The Racial‐Ecological Politics of the Chinese Crayfish Trade in Kenya

open access: yesAmerican Anthropologist, Volume 128, Issue 1, Page 183-194, March 2026.
ABSTRACT This article examines entanglements of ecology, race, and foodways at Lake Naivasha in Kenya. Nonnative Louisiana red swamp crayfish (Procambarus clarkii), first introduced to Kenya in the 1960s, were once viewed as invasive but are now sought after as a delicacy among Kenya's Chinese community.
Amanda Kaminsky
wiley   +1 more source

The Prevalence of Crayfish Plague (Aphanomyces Astaci) in Two Signal Crayfish (Pacifastacus Leniusculus) Populations in Finland [PDF]

open access: yesJournal of Crustacean Biology, 2000
Abstract The occurrence of dark brown melanized spots indicative of the presence of crayfish plague fungus (Aphanomyces astaci Schikora) was investigated in three Finnish lakes inhabited by the introduced American signal crayfish (Pacifastacus leniusculus Dana) in 1979, 1983, 1985–1988, 1990, 1993, and 1994. The crayfish were caught with crayfish traps
Viljo Nylund, Kai Westman
openaire   +1 more source

HAZARD ANALYSIS OF EXOTIC PATHOGENS OF POTENTIAL THREAT TO EUROPEAN FRESHWATER CRAYFISH.

open access: yesKnowledge and Management of Aquatic Ecosystems, 2002
Managers, scientists, fishermen and farmers who work with freshwater crayfish understand clearly the severe affects that the introduction of an exotic pathogen can have on freshwater crayfish populations.
EDGERTON B. F.
doaj   +1 more source

The Red Alien vs. the Blue Destructor: The Eradication of Cherax destructor by Procambarus clarkii in Latium (Central Italy)

open access: yesDiversity, 2018
Cherax destructor is a crayfish endemic to south-eastern Australia and one of the last alien crayfish to be introduced in Italy. In the Laghi di Ninfa Natural Reserve (Latium region, Central Italy), the species was probably introduced in 1999, but only ...
Giuseppe Mazza   +6 more
doaj   +1 more source

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