Seasonal occurrence and metrical variability of Gyrodactylus
rhodei Zitnan, 1964 (Monogenea, Gyrodactylidae)

D 2003

Seasonal occurrence and metrical variability of Gyrodactylus rhodei Zitnan, 1964 (Monogenea, Gyrodactylidae)

DÁVIDOVÁ, Martina, Jiří JARKOVSKÝ, Iveta MATĚJUSOVÁ and Milan GELNAR

Basic information

Original name

Seasonal occurrence and metrical variability of Gyrodactylus rhodei Zitnan, 1964 (Monogenea, Gyrodactylidae)

Authors

DÁVIDOVÁ, Martina (703 Slovakia, guarantor), Jiří JARKOVSKÝ (203 Czech Republic), Iveta MATĚJUSOVÁ (203 Czech Republic) and Milan GELNAR (203 Czech Republic)

Edition

2003. vyd. Bloemfontein, South Africa, Sixth International Symposium on Fish Parasites, p. 117-117, 2003

Publisher

Department of Zoology & Entomology, University of the Free State, Bloemfontein, South Africa

Other information

Language

English

Type of outcome

Proceedings paper

Field of Study

10600 1.6 Biological sciences

Country of publisher

South Africa

Confidentiality degree

is not subject to a state or trade secret

RIV identification code

RIV/00216224:14310/03:00008526

Organization unit

Faculty of Science

Keywords in English

seasonal occurrence; metrical variability; Gyrodactylus rhodei

Abstract

V originále

Gyrodactylus rhodei Zitnan, 1964 is ectoparasite of the bitterling (Rhodeus sericeus Pallas, 1776), living on the gills, fins and body surface. A total of 691 specimens of G. rhodei were collected from July 2000 to May 2001 in River Kyjovka, Czech Republic. The presence of parasites was related to water temperature. The abundance and prevalence tended to increase during the cold period of year, winter and early spring. The abundance and prevalence decreased during the warm period of the year. Variability of attachment parts of parasite haptor was studied on 101 parasite specimens. The hard parts of haptor were significantly smaller in specimens occurring during warm season and vice versa. The negative relationship between water temperature and size of hard parts of G. rhodei haptor was evident on measurements of total length of marginal hooks, anchors, anchor point and root, length of ventral bar and membrane processes. Also sequences of the compete ITS (rDNA) of specimens from winter (larger measurements of hard parts of haptor) and summer season (smaller measurements of hard parts of haptor) were compared. Sequences of all studied parasite specimens were identical and there were no evidence of intraspecific variability in the sequenced fragment.

Links

GA524/98/0940, research and development project

Name: Diverzita parazitů jako indikátor enviromentálního stresu

Investor: Czech Science Foundation, Diversity of parasites like an indicator of environmental stress

MSM 143100010, plan (intention)

Name: Časoprostorová dynamika biodiverzity v ekosystémech střední Evropy.

Investor: Ministry of Education, Youth and Sports of the CR, Spatiotemporal biodiversity dynamics in ecosystems of Central Europe

Cite

DÁVIDOVÁ, Martina, Jiří JARKOVSKÝ, Iveta MATĚJUSOVÁ and Milan GELNAR. Seasonal occurrence and metrical variability of Gyrodactylus rhodei Zitnan, 1964 (Monogenea, Gyrodactylidae). In Sixth International Symposium on Fish Parasites. 2003rd ed. Bloemfontein, South Africa: Department of Zoology & Entomology, University of the Free State, Bloemfontein, South Africa, 2003, p. 117.

@inproceedings{493154,
   author = {Dávidová, Martina and Jarkovský, Jiří and Matějusová, Iveta and Gelnar, Milan},
   address = {Bloemfontein, South Africa},
   booktitle = {Sixth International Symposium on Fish Parasites},
   edition = {2003},
   keywords = {seasonal occurrence; metrical variability; Gyrodactylus rhodei},
   language = {eng},
   location = {Bloemfontein, South Africa},
   pages = {117-117},
   publisher = {Department of Zoology & Entomology, University of the Free State, Bloemfontein, South Africa},
   title = {Seasonal occurrence and metrical variability of Gyrodactylus rhodei Zitnan, 1964 (Monogenea, Gyrodactylidae)},
   year = {2003}
}

TY  - CONF
ID  - 493154
AU  - Dávidová, Martina - Jarkovský, Jiří - Matějusová, Iveta - Gelnar, Milan
PY  - 2003
TI  - Seasonal occurrence and metrical variability of Gyrodactylus rhodei Zitnan, 1964 (Monogenea, Gyrodactylidae)
PB  - Department of Zoology & Entomology, University of the Free State, Bloemfontein, South Africa
CY  - Bloemfontein, South Africa
KW  - seasonal occurrence
KW  - metrical variability
KW  - Gyrodactylus rhodei
N2  - Gyrodactylus rhodei Zitnan, 1964 is ectoparasite of the bitterling (Rhodeus sericeus Pallas, 1776), living on the gills, fins and body surface. A total of 691 specimens of G. rhodei were collected from July 2000 to May 2001 in River Kyjovka, Czech Republic. The presence of parasites was related to water temperature. The abundance and prevalence tended to increase during the cold period of year, winter and early spring. The abundance and prevalence decreased during the warm period of the year. Variability of attachment parts of parasite haptor was studied on 101 parasite specimens. The hard parts of haptor were significantly smaller in specimens occurring during warm season and vice versa. The negative relationship between water temperature and size of hard parts of G. rhodei haptor was evident on measurements of total length of marginal hooks, anchors, anchor point and root, length of ventral bar and membrane processes. Also sequences of the compete ITS (rDNA) of specimens from winter (larger measurements of hard parts of haptor) and summer season (smaller measurements of hard parts of haptor) were compared. Sequences of all studied parasite specimens were identical and there were no evidence of intraspecific variability in the sequenced fragment.
ER  -

DÁVIDOVÁ, Martina, Jiří JARKOVSKÝ, Iveta MATĚJUSOVÁ and Milan GELNAR. Seasonal occurrence and metrical variability of Gyrodactylus rhodei Zitnan, 1964 (Monogenea, Gyrodactylidae). In \textit{Sixth International Symposium on Fish Parasites}. 2003rd ed. Bloemfontein, South Africa: Department of Zoology \&{} Entomology, University of the Free State, Bloemfontein, South Africa, 2003, p.~117.

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