Results 91 to 100 of about 49,943 (331)
Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment
The Anatomical Record, EarlyView.Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga +4 more
wiley +1 more source
BiologySeabob shrimp Xiphopenaeus kroyeri is under heavy capture-pressure in the western Atlantic, requiring periods of fishing suspension to protect the propagation of the species in the wild.
Amanda Soares dos Santos +9 more
doaj +1 more source
Seasonal changes in serum testosterone, 11-ketotestosterone, and 1713-estradiol levels in the brown bullhead, Ictalurus nebuIosus Lesueur [PDF]
, 1984 The seasonal changes in gonadosomatic index (GSI) and strum testosterone, I I-ketotestosterone, and 17&estmdiol levels were measured in adult feral brown bullheads, Ictalurus nebulosus Lzsueur.
Burke, MG, Leatherland, JF, Sumpter, JP
core
Extragonadal LH/hCG action-Not yet time to rewrite textbooks [PDF]
, 2007 Gonadotropins are indispensable in both sexes in the regulation of gonadal sex steroid production and gametogenesis. In addition to their well-established classical actions, numerous recent publications have indicated the presence and function of ...
Ahtiainen, Petteri +5 more
core +3 more sources
The Anatomical Record, EarlyView.Abstract The equine ovary exhibits unique structural and developmental features that distinguish it from those of other domestic species, including the presence of an ovulation fossa and an inversion of cortical and medullary layers. This study aimed to investigate the morphostructural development of the equine fetal ovary, with particular emphasis on ...
Laura Ver Goltz +5 more
wiley +1 more source
Gonad Maturation of Clown Loach (Botia macracanthus) in Pond
Jurnal Akuakultur Indonesia, 2007 <p>The objective of this research is to know the gonad maturation of clown loach <em>{Botia macracanthus) </em>reared in pond. Two groups contain 4 female broodstock; I) carried and II) non-carried egg broodstock were reared in two separated hapas which placed in pond. Each hapa was also stocked nine males.
Irzal Effendi +4 more
openaire +3 more sources
Update on male reproductive endocrinology. [PDF]
, 2018 Practitioners of male reproductive and sexual medicine must have an intimate understanding of the physiology of male reproductive endocrinology, as such a knowledge is the cornerstone on which hormonal treatments are based.
Clavijo, Raul, Hsiao, Wayland
core +1 more source
The Anatomical Record, EarlyView.Abstract Sexual differentiation in the equine fetus involves coordinated morphogenetic processes that shape both the gonads and the genital ducts. Although the formation of testes and ovaries has been relatively well documented, the temporal dynamics and morphometric patterns of the mesonephric (Wolffian) and paramesonephric (Müllerian) ducts remain ...
Tais Harumi de Castro Sasahara +4 more
wiley +1 more source
FishesThis preliminary study explored the effect of a constant thermal regime on gonadal maturation and spawning readiness in the temperate sea cucumber Holothuria tubulosa Gmelin, 1791, under aquaculture conditions.
Bengi Gerçeklioğlu +1 more
doaj +1 more source
Aquatic Living Resources, 2018 Reproductive steroid concentration and gonadal development as well as plasma cortisol were investigated during the reproductive period (April to October) of the Pacific red snapper Lutjanus peru, a commercial and important local fishery species in the ...
Dumas Silvie +4 more
doaj +1 more source