Investigation of reproduction and larvae development on peppered cory (Corydoras paleatus Jenys,1842)

2008 ◽  
Author(s):  
Hatice Unal
Keyword(s):  
Larvae Development

scholarly journals Reduction rate of nematode egg counts and third-stage larvae development from sheep and goat faeces preserved at 4οC

2018 ◽  
Vol 67 (3) ◽  
pp. 177 ◽  
Author(s):  
A. DRIMTZIA ◽  
E. PAPADOPOULOS
Keyword(s):  
Reduction Rate ◽  
Small Ruminants ◽  
Storage Period ◽  
Gastrointestinal Nematode ◽  
Sheep And Goats ◽  
Nematode Parasites ◽  
Faecal Samples ◽  
Third Stage ◽  
Faecal Egg Counts ◽  
Larvae Development

Gastrointestinal nematode parasites cause major production losses to small ruminants. The most common way to diagnose or monitor the worm burdens in sheep and goats remains the quantitative parasitological examinations, i.e. the faecal egg counts. However, the reliability of the results of such methods depends greatly on the conditions and duration of the storage of the faecal samples prior to examination. The aim of this research was to evaluate the reduction rate and the maximum storage period, without significant losses, of nematode egg counts and third-stage larvae development from sheep and goat faeces preserved at 4οC. Towards this end, a pooled faecal sample was formed by collecting faeces from naturally infected sheep and goats (separately). Faecal egg counts and coprocultures were performed on fresh faeces and on preserved ones every week and up to 119 days post sampling. It was concluded that the preservation at 4oC, i.e. into a refrigerator, of fresh faeces from sheep and goats for parasitological examinations poses danger of misdiagnosis, if not performed in a period not exceeding 3 weeks of time. The rate of reduction of the faecal nematode egg counts starts to be significant lower than the ones performed with fresh samples, for both sheep and goats, after the third week of storage. The percentage of the gastrointestinal nematode larvae developing to the infective third–stage alters significantly for the Haemonchus genus, soon after the first week of storage (p<0.05).

scholarly journals Tick-borne flavivirus infection in Ixodes scapularis larvae: Development of a novel method for synchronous viral infection of ticks

Virology ◽  
2007 ◽  
Vol 365 (2) ◽  
pp. 410-418 ◽  
Author(s):  
Dana N. Mitzel ◽  
James B. Wolfinbarger ◽  
R. Daniel Long ◽  
Max Masnick ◽  
Sonja M. Best ◽  
...  
Keyword(s):  
Viral Infection ◽  
Ixodes Scapularis ◽  
Novel Method ◽  
Flavivirus Infection ◽  
Larvae Development

Parnassius apollo last-instar larvae development prediction by analysis of weather condition as a tool in the species’ conservation

2014 ◽  
Vol 337 (5) ◽  
pp. 325-331 ◽  
Author(s):  
Bartosz Łozowski ◽  
Andrzej Kędziorski ◽  
Mirosław Nakonieczny ◽  
Piotr Łaszczyca
Keyword(s):  
Species Conservation ◽  
Weather Condition ◽  
Parnassius Apollo ◽  
Larvae Development

scholarly journals Genetic mapping of variation in dauer larvae development in growing populations of Caenorhabditis elegans

Heredity ◽  
2013 ◽  
Vol 111 (4) ◽  
pp. 306-313 ◽  
Author(s):  
J W M Green ◽  
L B Snoek ◽  
J E Kammenga ◽  
S C Harvey
Keyword(s):  
Caenorhabditis Elegans ◽  
Genetic Mapping ◽  
Dauer Larvae ◽  
Larvae Development
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