J 2017

Metazoan parasites of African annual killifish (Nothobranchiidae): abundance, diversity, and their environmental correlates

NEZHYBOVÁ, Veronika, Martin REICHARD, Radim BLAŽEK a Marketa ONDRACKOVA

Základní údaje

Originální název

Metazoan parasites of African annual killifish (Nothobranchiidae): abundance, diversity, and their environmental correlates

Autoři

NEZHYBOVÁ, Veronika (203 Česká republika, domácí), Martin REICHARD (203 Česká republika, garant), Radim BLAŽEK (203 Česká republika, domácí) a Marketa ONDRACKOVA (203 Česká republika)

Vydání

BIOTROPICA, Hoboken, NJ USA, Wiley, 2017, 0006-3606

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10618 Ecology

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 2.281

Kód RIV

RIV/00216224:14310/17:00100381

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000395643400010

Klíčová slova anglicky

distribution patterns; fish intermediate host; habitat variation; Limpopo; Mozambique; Nothobranchius furzeri; paratenic host

Štítky

Změněno: 9. 4. 2018 10:40, Ing. Nicole Zrilić

Anotace

V originále

Estimates of biodiversity and its global patterns are affected by parasite richness and specificity. Despite this, parasite communities are largely neglected in biodiversity estimates, especially in the tropics. We studied the parasites of annual killifish of the genus Nothobranchius that inhabit annually desiccating pools across the African savannah and survive the dry period as developmentally arrested embryos. Their discontinuous, non-overlapping generations make them a unique organism in which to study natural parasite fauna. We investigated the relationship between global (climate and altitude) and local (pool size, vegetation, host density and diversity, and diversity of potential intermediate hosts) environmental factors and the community structure of killifish parasites. We examined metazoan parasites from 21 populations of four host species (Nothobranchius orthonotus, N.furzeri, N.kadleci, and N.pienaari) across a gradient of aridity in Mozambique. Seventeen parasite taxa were recorded, with trematode larval stages (metacercariae) being the most abundant taxa. The parasites recorded were both allogenic (life cycle includes non-aquatic host; predominantly trematodes) and autogenic (cycling only in aquatic hosts; nematodes). The parasite abundance was highest in climatic regions with intermediate aridity, while parasite diversity was associated with local environmental characteristics and positively correlated with fish species diversity and the amount of aquatic vegetation. Our results suggest that parasite communities of sympatric Nothobranchius species are similar and dominated by the larval stages of generalist parasites. Therefore, Nothobranchius serve as important intermediate or paratenic hosts of parasites, with piscivorous birds and predatory fish being their most likely definitive hosts.