Results 21 to 30 of about 55,016 (311)

Integrative Transcriptome Sequencing Reveals the Molecular Difference of Maturation Process of Ovary and Testis in Mud Crab Scylla paramamosain

open access: yesFrontiers in Marine Science, 2021
The mud crab Scylla paramamosain is a species with significant sexual dimorphism in growth rate and body size, of which the females are of higher economic and nutritional values than the males.
Wenxiao Cui   +19 more
doaj   +1 more source

FGF9 and WNT4 act as antagonistic signals to regulate mammalian sex determination [PDF]

open access: yes, 2006
The genes encoding members of the wingless-related MMTV integration site (WNT) and fibroblast growth factor (FGF) families coordinate growth, morphogenesis, and differentiation in many fields of cells during development.
Robin Lovell-Badge   +41 more
core   +1 more source

Metal Concentrations of Paracentrotus lividus and Arbacia lixula Gonads from Gökçeada Island (North Aegean Sea, Turkey)

open access: yesÇanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, 2021
In this study, Pb, Cu, Zn, Cd and Fe levels in the gonads of Paracentrotus lividus and Arbacia lixula collected from the coasts of Gökçeada were determined seasonally between 2014-2015. Trace element concentrations of P.
Melis Yılmaz, Sezginer TUNCER
doaj   +1 more source

"Ex vivo" and "in vivo" studies to assess chemical effects on steroidogenesis in fish: development and application of methods [PDF]

open access: yes, 2011
The aquatic environment receives many chemical substances of natural or anthropogenic origin, which can influence the endocrine functions and health of wildlife.
a Marca Pereira, Luz Maria
core   +1 more source

Histological changes in gonads of rock sole Lepidopsetta polyxystra during its life cycle

open access: yesИзвестия ТИНРО, 2017
Gametogenesis of rock sole Lepidopsetta polyxystra and its annual cycle of reproduction are described in details. In the reproductive cycle, gonads of its males and females pass a number of stages characterized by certain qualitative and quantitative ...
Anna Yu. Dubinina, Alexander O. Zolotov
doaj   +1 more source

Mathematical Models of the Developing C. elegans Hermaphrodite Gonad [PDF]

open access: yes, 2006
The study of growing and developing organisms is a fascinating branch of experimental biology. Once created, cells must exchange chemical and physical cues with neighboring cells in order to grow, divide, and differentiate properly.
Goulet, David Michael
core   +1 more source

Isolation and Characterization of Highly Pure Type A Spermatogonia From Sterlet (Acipenser ruthenus) Using Flow-Cytometric Cell Sorting

open access: yesFrontiers in Cell and Developmental Biology, 2021
Sturgeons are among the most ancient linages of actinopterygians. At present, many sturgeon species are critically endangered. Surrogate production could be used as an affordable and a time-efficient method for endangered sturgeons. Our study established
Xuan Xie   +13 more
doaj   +1 more source

Feeding and Reproductive Phenotypic Traits of the Sea Urchin Tripneustes gratilla in Seagrass Beds Impacted by Eutrophication

open access: yesDiversity, 2023
The sea urchin Tripneustes gratilla is a major grazer and is, hence, an excellent key model organism to study to gain a better understanding of responses to changes in its habitat.
Helen Grace P. Bangi   +1 more
doaj   +1 more source

The use of ULVA as a feed supplement in the development of an artificial diet and feeding regimes to produce export quality roe from the sea urchin Tripneustes gratilla (Linnaeus) [PDF]

open access: yes, 2013
Includes bibliographical references.Tripneustes gratilla is a fast growing, shallow water echinoid, which occurs across the Indo-Pacific, with its south-western limit in warm, temperate waters of South Africa. The success of T.
Cyrus, Mark Digby
core   +1 more source

Gonadal Histopathological Disorders in Mytilus galloprovincialis Male Exposed to Tars Used in Mussel Farms

open access: yesFrontiers in Marine Science, 2019
Polycyclic aromatic hydrocarbons (PAHs) and trace metals are pollutants widely distributed in the marine environment with toxic effects on live organisms, but few laboratory studies have proved their causal relationship with histopathologic alterations ...
Ana Alonso   +6 more
doaj   +1 more source

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