J 2001

Morhometric correlates of host specificity in Dactylogyrus species (Monogenea) parasites of European Cyprinid fish

ŠIMKOVÁ, Andrea, Yves DESDEVISES, Milan GELNAR and Serge MORAND

Basic information

Original name

Morhometric correlates of host specificity in Dactylogyrus species (Monogenea) parasites of European Cyprinid fish

Authors

ŠIMKOVÁ, Andrea, Yves DESDEVISES, Milan GELNAR and Serge MORAND

Edition

Parasitology, United Kingdom, Cambridge University Press, 2001, 0-521-57637-7

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/01:00004773

Organization unit

Faculty of Science

UT WoS

000170390500007

Keywords in English

adaptation; host specificity; fish monogeneans; morphometric deterninamts; simulated phylogenies
Změněno: 28/11/2001 17:18, prof. RNDr. Milan Gelnar, CSc.

Abstract

V originále

We test the hypothesis that living on larger fish may impose constrains, i.e. the need to develop large attachment organs, related to the necessity to remain attached on large gills. For this, we compiled data on body size and morphometric maesurements of attachment organs of 44 Dactylogyrus species from 19 cyprinid fishes. Nineteen dactylogyrid species were considered as specialists and 25 as generalists. The lack of phylogenetic information lead us to perform comparative analyses using raw values and independant contrast obtained by random phylogenies. Our results show that rich parasite communities are formed by specialists and generalists, whereas poor communities are composed mainly of generalit parasites. Moreover, specialists are found on larger hosts, which may reflect a specialization on a predictable resource, as larger fish love longer and offer large gills for parasite colonization. Parasite specialization is shown to be linked with adaptation of attachment organs to their fish hosts. Two morphometric variables of the attachment organ, the total lenght of anchor and length of base of anchor, were positively correlated with host length for specialists.

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