Results 101 to 110 of about 49,943 (331)

Influences of habitat and seasonal changes on gonadal maturation of Echinometra mathaei (Echinodermata: Echinoidea) and Tridacna squamosa (Mollusca: Bivalvia) in the Red Sea, Egypt. [PDF]

Environ Monit Assess, 2023
El-Sokkary SG, El-Wakeil KFA, Obuid-Allah AH, Omer MY.   +3 more
europepmc   +1 more source

Cortical bone distribution in the human mandibular symphysis: Ontogenic and morphometric approaches in archeological context

The Anatomical Record, EarlyView.
Abstract The human mandibular symphysis concentrates multiaxial loads during function and remodels throughout growth, but the precise mechanisms underlying cortical bone shape during growth remain relatively unexplored. Approaches based solely on thickness or external cortical contours provide only partial insights and do not capture the functional ...
Ana Ribeiro, Elsa Garot, Christine Couture, Pierre‐Hadrien Decaup   +3 more
wiley   +1 more source

Effects of dietary supplementation with 17β-estradiol on the Steroid Hormone Levels, Gonadosomatic Index, and Gonadal Histology of Female Silver Pompano (Trachinotus blochii) Broodstock

Depik Jurnal
Silver pompano (Trachinotus blochii) is a mariculture commodity with fast growth characteristics and easy adaptation to the environment. However, the production of its seeds is hindered by the maturation of the parent's gonads out-side the spawning ...
Azizah Azizah, Munti Sarida, Yudha Trinoegraha Adiputra, Gregorius Nugroho Susanto, Agus Setyawan   +4 more
doaj   +1 more source

Investigation of \u3cem\u3ede novo\u3c/em\u3e cholesterol synthetic capacity in the gonads of goldfish (\u3cem\u3eCarassius auratus\u3c/em\u3e) exposed to the phytosterol beta-sitosterol [PDF]

, 2006
Total and intra-mitochondrial gonadal cholesterol concentrations are decreased in fish exposed to the phytoestrogen beta-sitosterol (beta-sit). The present study examined the potential for beta-sit to disrupt de novo cholesterol synthesis in the gonads ...
Drolet, Melissa, MacLatchy, Deborah L., Sharpe, Rainie L.   +2 more
core   +1 more source

Testosterone and androstenedione concentrations in human testis and epididymis during the first two years of life [PDF]

, 1983
Testosterone and androstenedione were measured in testicular and epididymal tissue of 37 previously healthy infants between 1 and 24 months of age who died suddenly. In half of the patients elevated plasma levels of cortisol and androstenedione suggested
Bidlingmaier, F., Dörr, H. G., Eisenmenger, Wolfgang, Knorr, D., Kuhnle, U.   +4 more
core   +1 more source

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

The Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo, Júlio César Costa de Souza, Angele Martins   +2 more
wiley   +1 more source

TEMPERATURE REQUIREMENTS FOR MATURATION OF GONADS OF NORTHERN OYSTERS

The Biological Bulletin, 1952
1. The temperature of 10.0° C. was not high enough to induce normal gametogenic activity in most of the oysters. Even the most advanced individuals of this group showed only slight development of the gonad after exposure to this temperature for 35 days. Apparently this temperature is near the biological zero for this activity.2.
V.L. LOOSANOFF, H. C. DAVIS
openaire   +2 more sources

Reproductive biology of Oxychilus(Atlantoxychilus) spectabilis (Milne-Edwards, 1885) (Gastropoda: Pulmonata) : a gametogenic approach [PDF]

, 2013
The taxonomic status and anatomy of Oxychilus (Atlantoxychilus) spectabilis (Milne-Edwards, 1885), an endemic land snail from Santa Maria Island, Azores, has been subject of detailed study, yet information about its life history is wanting.
Cunha, Regina Tristão da, Ferreira, Ana Filipa, Martins, António M. de Frias, Melo, Paulo Jorge, Rodrigues, A. R.   +4 more
core  

The Role of miRNAs in Chicken Immune Regulation and Prospects for Disease‐Resistant Breeding

Animal Research and One Health, EarlyView.
A schematic workflow illustrating the screening of disease‐resistant miRNAs and the generation of miRNA‐based disease‐resistant chickens via PGC‐mediated germline genome editing. ABSTRACT MicroRNAs (miRNAs) are emerging as pivotal regulators of the immune system, playing a decisive role in shaping disease resistance in chicken.
Qiangzhou Wang, Weiran Wu, Qingqing Cai, Jiaxing Wang, Qi Gao, Muhammad Iftikhar, Yulin Bi, Hao Bai, Lihong Gu, Guobin Chang, Shihao Chen   +10 more
wiley   +1 more source

Desenvolvimento gonadal do jundiá, Rhamdia quelen (Teleostei, Siluriformes), em viveiros de terra, na região sul do Brasil = Gonadal development of jundiá, Rhamdia quelen (Teleostei, Siluriformes), in earthen ponds in southern Brazil

Acta Scientiarum: Biological Sciences, 2007
O presente estudo caracterizou o desenvolvimento gonadal de jundiá até a maturação sexual, quando cultivados em viveiros de terra, visando subsidiar o desenvolvimento de tecnologia de cultivo para esta espécie na região sul do Brasil. Alevinos de jundiá (
Luciana Ghiraldelli, Cláudia Machado, Débora Machado Fracalossi, Evoy Zaniboni Filho   +3 more
doaj