dwarf male Flashcards
females
gut-less, acid-oozing, housing symbionts
Lecitotrophic larva, sexual dimorphism
Macroscopic females & microscopic males
HOW? Do male Osedax exemplify progenesis ?
paedomorphosis
‘Early offset of somatic growth in larval/juvenile stage’
possibly caused by early/accelerated maturation”
O. PRIAPUS
Evolutionary reversal to ancestral stage - a species w/ large sessile males
Smaller size of females effectively increases the resources available
Morphological characterization of
life stages
▸ Age
▸ Shape
▸ Ciliation
▸ Glands
▸ Chaetae
▸ Muscles
▸ Nerves
Transcriptomic characterization of
life stages
Differential gene expression of
multiple single individuals of each life
stage (optimized pipeline)
how fast is sex differentiation
3+ weeks for females
few days for males