Size-related inbreeding preference and competitiveness in male Pelvicachromis taeniatus (Cichlidae)
نویسندگان
چکیده
منابع مشابه
Direct Familiarity Does Not Alter Mating Preference for Sisters in Male Pelvicachromis taeniatus (Cichlidae)
Close inbreeding has often been shown to be extremely harmful because of the fixation of deleterious recessive alleles in inbred offspring (Charlesworth & Charlesworth 1987). As a consequence, inbred offspring often show reduced fitness compared with outbred offspring (inbreeding depression, Charlesworth & Charlesworth 1987). The ability to identify relatives (kin recognition, Hepper 1991) offe...
متن کاملParental investment in relation to offspring quality in the biparental cichlid fish Pelvicachromis taeniatus
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متن کاملComputer animation as a tool to study preferences in the cichlid Pelvicachromis taeniatus.
Four choice experiments were conducted with both sexes of the cichlid Pelvicachromis taeniatus using computer-manipulated stimuli of digital images differing in movement, body shape or colouration. The results show that computer animations can be useful and flexible tools in studying preferences of a cichlid with complex and variable preferences for different visual cues.
متن کاملInbreeding depresses sperm competitiveness, but not fertilization or mating success in male Tribolium castaneum.
As populations decline to levels where reproduction among close genetic relatives becomes more probable, subsequent increases in homozygous recessive deleterious expression and/or loss of heterozygote advantage can lead to inbreeding depression. Here, we measure how inbreeding across replicate lines of the flour beetle Tribolium castaneum impacts on male reproductive fitness in the absence or p...
متن کاملActive Inbreeding in a Cichlid Fish and Its Adaptive Significance
Levels of inbreeding are highly variable in natural populations. Inbreeding can be due to random factors (like population size), limited dispersal, or active mate choice for relatives. Because of inbreeding depression, mating with kin is often avoided, although sometimes intermediately related individuals are preferred (optimal outbreeding). However, theory predicts that the advantages of matin...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2011
ISSN: 1465-7279,1045-2249
DOI: 10.1093/beheco/arq217