Related by context. Frequent words. (Click for all words.) 56 fecundity 54 reproductive hormones 52 reproductively 52 thyroid hormone levels 52 fatty acid composition 52 reproduce asexually 51 hormone prolactin 51 gonadotropins 51 masculinization 51 oestrogens 51 Genetic variation 51 sex hormone estrogen 51 nutrient uptake 51 omega fatty acids 51 Calorie restriction 50 sexual dimorphism 50 Vitamin supplements 50 Inbreeding 50 Oestrogen 50 mammary tumors 50 hormone imbalances 50 developmental abnormalities 50 naturally occurring substances 49 bacterial flora 49 photoperiod 49 pigment melanin 49 dystocia 49 uterine contractions 49 Genetic mutations 49 palatability 49 female hormone estrogen 48 Methylmercury 48 amphipods 48 fertilize eggs 48 Artificial insemination 48 unfertilized 48 pteropods 48 reproductive 48 fruitflies 48 magnesium intake 48 allergenicity 48 pipefish 48 asexual reproduction 48 endocrine disruption 48 microflora 48 Fatty acids 48 polyunsaturated fatty acid 48 Saturated fats 48 erectile tissue 48 mutagens 48 genetic variability 48 fertility 48 vaginal secretions 47 Abdominal fat 47 toxic algal blooms 47 calcium phosphorus 47 systemic toxicity 47 nutrient absorption 47 medicalisation 47 copepod 47 D2 receptors 47 Uric acid 47 intestinal flora 47 thermoregulation 47 estrogen deficiency 47 sperm 47 spermatozoa 47 Antarctic krill 47 heterosis 47 Oily fish 47 plumpness 47 DHEAS 47 rareness 47 hormone secretion 47 gonadal 47 placental tissue 46 locomotor activity 46 gamma tocopherol 46 sperm motility 46 recessive genes 46 replicative 46 MHC genes 46 reproductive physiology 46 gamma interferon 46 mimic estrogen 46 endophyte 46 spermatogenesis 46 reproductive tract 46 ovarian function 46 reproductive disorders 46 reproduction 46 gastrointestinal tracts 46 toxoplasma 46 nutrient density 46 Researchers theorize 46 gut microbiota 46 larval stages 46 prolactin levels 46 antibiotic residues 46 offspring 45 sea lampreys