title: Studies on host-flea relationship. II. Sex hormones of the host and fecundity of rat flea Xenopsylla astia (Rothschild) and Xenopsylla cheopis (Rothschild) (Siphonaptera).
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002369:Castration; D003864:Depression, Chemical; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D005298:Fertility / Q000187:drug effects*; D008297:Male; D010063:Ovum; D051381:Rats; D005423:Siphonaptera / Q000187:drug effects*; D013739:Testosterone / Q000494:pharmacology*
chemical_list: D013739:Testosterone; D004958:Estradiol