Results 71 to 80 of about 4,036 (162)

Étude de la structure ovarienne de Barbus holotaenia, Boulenger, 1904 (Pisces, Cyprinidae) du bassin de la Luki (Zaïre)

Knowledge and Management of Aquatic Ecosystems, 1996
L'examen histologique et cytologique des ovaires de Barbus holotaénia a permis de distinguer différents stades de développement.(stades 0 à VI). Le stade 0 correspond à la transformation des cellules primordiales en ovocytes.
MUTAMBUE S.
doaj   +1 more source

The cell biology of mosquito vitellogenesis

Memórias do Instituto Oswaldo Cruz, 1987
Insect vitellogenesis involves coordinated activities of the fat body and oocytes. We have studied these activities at the cellular level in the mosquito. During each vitellogenic cycle, the fat body undergoes three successive stages: 1) proliferation of biosynthetic organelles, 2) vitellogenin synthesis, 3) termination of vitellogenin synthesis and ...
openaire   +4 more sources

Transduction of the vitellogenic signal of juvenile hormone by Methoprene-tolerant in the cockroach Blattella germanica (L.) (Dictyoptera, Blattellidae) [PDF]

Arthropods, 2016
In adult females of the cockroach Blattella germanica, juvenile hormone (JH) promotes vitellogenin production. Depletion of Methoprene-tolerant (Met) mRNA levels with RNAi resulted in a clear reduction of vitellogenin expression in the fat body while ...
Mahboubeh Naghdi, Jose-Luis Maestro, Xavier Belles, et al.   +2 more
doaj  

Ecdysteroids, juvenile hormone and vitellogenesis in the cockroach Leucophaea maderae

Journal of Insect Science, 2002
Topical application of 400µg of the juvenile hormone analog, methoprene, to females of the penultimate instar of Leucophaea maderae failed to induce vitellogenin synthesis.
Franz Engelmann
doaj  

Physiology of Ovarian Development in Crustaceans: Interactions Among Hormones, Nutrients, and Environmental Factors From Integrated Perspectives. [PDF]

Aquac Nutr
Dildar T, Cui W, Ma H.
europepmc   +1 more source

Adult nutrient shortage impairs female reproduction via the attenuated juvenile hormone signaling during vitellogenesis in Helicoverpa armigera (Lepidoptera: Noctuidae). [PDF]

J Insect Sci
Zheng H, Liu X, Huang R, Su Q, Peng Y, Xiao H, Zhang W.   +6 more
europepmc   +1 more source

Seasonal dynamics of plasma estradiol 17β level, gonadosomatic index, and ovarian development in female golden trevally (Gnathanodon speciosus). [PDF]

Sci Rep
Pham HQ, Le HM, Van Phan U, Van Nguyen M, Dinh KV.   +4 more
europepmc   +1 more source

Corrigendum: Integrated transcriptomic and metabolomic analyses identify key factors in the vitellogenesis of juvenile Sichuan bream (Sinibrama taeniatus)

Frontiers in Marine Science
Zhe Zhao, Zhe Zhao, Qiang Zhao, Qiang Zhao, Haoyu Wang, Haoyu Wang, Lan Wei, Siya Wang, Siya Wang, Shilin Li, Shilin Li, Dengyue Yuan, Dengyue Yuan, Zhijian Wang, Zhijian Wang   +14 more
doaj   +1 more source

Biomarkers of foraging and reproduction in captive adult female hawksbill sea turtles (Eretmochelys imbricata). [PDF]

Conserv Physiol
Kent JB, Dawson KR, Fukada S, Makabe M, Kawazu I, Maeda K, Valverde RA.   +6 more
europepmc   +1 more source

Trade-off between antibacterial immune defense and oogenesis progression in female Drosophila melanogaster. [PDF]

Genetics
Gordon KE, Ray S, Marcin JM, Gonzales PM, Li ML, Liang C, Wolfner MF, Lazzaro BP.   +7 more
europepmc   +1 more source