The effect of malarial infection on individual condition and lifetime reproductive performance in a short-lived migratory songbird
| Název práce v češtině: | The effect of malarial infection on individual condition and lifetime reproductive performance in a short-lived migratory songbird |
|---|---|
| Název v anglickém jazyce: | The effect of malarial infection on individual condition and lifetime reproductive performance in a short-lived migratory songbird |
| Klíčová slova: | lifespan, malaria, Plasmodium, sexual ornamentation, survival, migration, stable isotopes |
| Klíčová slova anglicky: | lifespan, malaria, Plasmodium, sexual ornamentation, survival, migration, stable isotopes |
| Akademický rok vypsání: | 2022/2023 |
| Typ práce: | disertační práce |
| Jazyk práce: | angličtina |
| Ústav: | Katedra zoologie (31-170) |
| Vedoucí / školitel: | prof. Mgr. Tomáš Albrecht, Ph.D. |
| Řešitel: | skrytý - zadáno a potvrzeno stud. odd. |
| Datum přihlášení: | 11.10.2022 |
| Datum zadání: | 11.10.2022 |
| Datum potvrzení stud. oddělením: | 11.10.2022 |
| Konzultanti: | doc. Mgr. Pavel Munclinger, Ph.D. |
| Předběžná náplň práce |
| The main aim of the planned dissertation thesis is to access long-term effects of both acute and chronical phases of malarial infection on individual fitness and lifetime reproductive success in long-studied population of European barn swallows in South Bohemia, the Třeboň Region.
In the focal population, long ornamental tail streamers are a sexual trait that is presumed to influence the attractiveness of its bearer (Wilkins et al. 2016, Pap et al. 2019), reflect individual physiological state and are grown on wintering grounds . A preliminary study revealed several strains of the genus Plasmodium (GRW02, GRW09, SYBOR21, RFF1) and also several lineages of Haemoproteus (HIRUS, WW1, Cryre) in this barn swallow population, with approximately one in four barn swallows infected (25%). Birds from this population adopt two distinct migration strategies – the South-West strategy with birds wintering in Congo Basin and the South-East strategy with birds wintering south of Congo Basin, up to South Africa. It can be assumed that malaria prevalence is due to the wet climate higher in Congo Basin (CB) birds than in Southern African (SA) birds. We can now demonstrate that feather isotopic profiles obtained from feathers grown on wintering sited can be used as geographically informative markers to distinguish most CB and SA birds in our population. In the framework of the proposed dissertation theses the following work packages will be investigated: 1) The effect of different overwintering environment (South Africa x Congo Basin) on parasite prevalence (including mixed lineage infections). 2) The association of the acute phase of malarial infection with individual body condition and expression of sexually selected traits. 3) The effect of chronic malarial infection on individual attractiveness 4) The effects of chronic malaria on lifetime fitness. |
| Předběžná náplň práce v anglickém jazyce |
| The main aim of the planned dissertation thesis is to access long-term effects of both acute and chronical phases of malarial infection on individual fitness and lifetime reproductive success in long-studied population of European barn swallows in South Bohemia, the Třeboň Region.
In the focal population, long ornamental tail streamers are a sexual trait that is presumed to influence the attractiveness of its bearer (Wilkins et al. 2016, Pap et al. 2019), reflect individual physiological state and are grown on wintering grounds . A preliminary study revealed several strains of the genus Plasmodium (GRW02, GRW09, SYBOR21, RFF1) and also several lineages of Haemoproteus (HIRUS, WW1, Cryre) in this barn swallow population, with approximately one in four barn swallows infected (25%). Birds from this population adopt two distinct migration strategies – the South-West strategy with birds wintering in Congo Basin and the South-East strategy with birds wintering south of Congo Basin, up to South Africa. It can be assumed that malaria prevalence is due to the wet climate higher in Congo Basin (CB) birds than in Southern African (SA) birds. We can now demonstrate that feather isotopic profiles obtained from feathers grown on wintering sited can be used as geographically informative markers to distinguish most CB and SA birds in our population. In the framework of the proposed dissertation theses the following work packages will be investigated: 1) The effect of different overwintering environment (South Africa x Congo Basin) on parasite prevalence (including mixed lineage infections). 2) The association of the acute phase of malarial infection with individual body condition and expression of sexually selected traits. 3) The effect of chronic malarial infection on individual attractiveness 4) The effects of chronic malaria on lifetime fitness. |