GYRODACTYLUS ELEGANS PDF

SpeciesGyrodactylus elegans · ADW Pocket Guides on the iOS App Store! The Animal Diversity Web team is excited to announce ADW Pocket Guides!. Go to Print Version. Gyrodactylus elegans. Taxonomic Serial No.: ( Download Help) Gyrodactylus elegans TSN Gyrodactylus species are ubiquitous monogenean parasites of teleosts with over .. Specifically, the cointroduction of Gyrodactylus elegans, G. gurleyi.

Author: Dumi Kazibar
Country: Togo
Language: English (Spanish)
Genre: Politics
Published (Last): 25 July 2011
Pages: 345
PDF File Size: 19.89 Mb
ePub File Size: 4.60 Mb
ISBN: 192-5-28985-119-1
Downloads: 95099
Price: Free* [*Free Regsitration Required]
Uploader: Grozahn

However, gyrodactylids are frustratingly similar in appearance and difficulties in species identification are believed to have considerable hampered ecological studies.

They are ubiquitous teleost ectoparasites that have been extensively studied since the late 19th Century, largely due their unique reproductive adaptations. The value of gyrodactylids in epidemiological models has been recognised for many years e. Rotenone poisoning of entire river systems was used, largely unsuccessfully, for many years, and now control measures involving heavy metal aluminium dosing are being trailed in Norway.

Overview of the genus Gyrodactylus Gyrodactylus is a hyperdiverse monogenean genus with ca. In addition to the G.

  JERRY MOFFATT REVELATIONS PDF

The biology of these pathogens predilects them for introduction Kennedy and numerous species have been introduced to Europe. With increased knowledge accumulating from both laboratory and field studies, we can begin to take a holistic approach to gyrodactylid systematics by analysing morphological, molecular, ecological elegabs biogeographical trends.

Despite their morphological conservatism, it appears that gyrodactylids display a range of elegsns behavioural traits associated with the diverse ecology of their teleost hosts e. Unfortunately, the impact of such introductions to the ecosystem is currently unpredictable, and factors influencing the pathogenic-potential of Gyrodactylus spp.

File:Gyrodactylus elegans.jpg

Elgans gyrodactylids exhibit distinct site preferences on the host, but may display characteristic migrations on the host during their life cycle. This yearmillions of Euros have been spent already on G.

He subsequentlyestablished species groups within each subgenus based on marginal hook morphology. Traditionally, gyrodactylid taxonomy was based on morphological characters alone.

Gyrodactylus Biology

Gyrodactylids are the only parasitic worms that reproduce in situ on their host and lack a specific transmission stage, therefore they bridge the classical divide between micro- bacteria, viruses etc and macroparasites worms etc.

More recently, molecular studies e.

In the current global economy, the risk of further introductions of gyrodactylid monogeneans is an indisputable threat. We feel the practical advantages of working with these model systems for studying host-parasite interactions are unsurpassed.

  GVENDER YGS DENEMELERI PDF

Gyrodactylus elegans – Taxonomy Result

These viviparous parasites already contain a fully grown embryo the F1 in utero when born and as the parent ages, development of a third generation embryo the F2 is visible gyrodadtylus the F1 see Fig. Apart from the financial costs to fish farming, this parasite endangers wild salmon stocks and is a significant conservation threat. Risk assessments have also been conducted to assess the risk posed to UK fisheries by gyrodactylosis Peeler et al.

Gyrodactylids are small With increasing aquacultural practices, the gyfodactylus posed by gyrodactylids is ever more apparent, particularly since the havoc created by the G. Age-structured population models have been used to assess the impact of disease-induced mortality at different stages of the life-cycle of salmonids Clers With its high fecundity and transmission potential, G.