Sex allocation: comparative analyses of brood sex ratio in birds and mammals

A tétel rövid nézete
dc.contributor.advisorSzékely, Tamás
dc.contributor.authorGarcía Miranda, Oscar
dc.contributor.departmentDE--Természettudományi és Technológiai Kar--Biológiai és Ökológiai Intézet
dc.date.accessioned2023-04-28T07:35:14Z
dc.date.available2023-04-28T07:35:14Z
dc.date.created2023-04-27
dc.description.abstractSex allocation is one of the core concepts in evolutionary biology nevertheless, the patterns of sex allocation and evolutionary predictors of sex ratio variation had remained controversial. Here, using data from 78,025 and 628,503 sexed individual offspring of birds and mammals respectively, that represent 90 species and 315 species of birds sex allocation patterns are investigated. A phylogenetic control analysis showed that in mammals 13 species have significantly male-biased brood sex ratios whereas 9 species have significant female-biased brood sex ratios. However, across all species brood sex ratio does not deviate significantly from 50:50 in birds nor in mammals consistently with the Fisherian frequency-dependent selection. We also hypothesize that brood sex ratios are predicted by traits related to sexual size dimorphism, mating systems, and brood size, and found that species with larger brood sizes had significantly more female offspring in birds. To conclude, captive populations provide an excellent yet rarely tapped source of information to investigate sex allocation. We call for future studies to explore the conservation, and welfare management implications of sex allocations in captive animals.
dc.description.correctorLB
dc.description.courseMSc in Biology
dc.description.degreeMSc/MA
dc.format.extent112
dc.identifier.urihttps://hdl.handle.net/2437/351168
dc.language.isoen
dc.rights.accessHozzáférhető a 2022 decemberi felsőoktatási törvénymódosítás értelmében.
dc.subjectsex allocation
dc.subjectmating system
dc.subjectsexual size dimorphism
dc.subjectbrood size
dc.subject.dspaceDEENK Témalista::Biológiai tudományok::Evolúciós állattan
dc.subject.dspaceDEENK Témalista::Biológiai tudományok::Természetvédelem
dc.titleSex allocation: comparative analyses of brood sex ratio in birds and mammals
Fájlok
Gyűjtemények
Theses (Faculty of Science and Technology)