WNT signalling plays a central role in mammalian sex determination by promoting ovarian development and repressing aspects of testis development in the early gonad. Dickkopf homolog 1 (DKK1) is a WNT signalling antagonist that plays critical roles in multiple developmental systems by modulating WNT activity. Here, we examined the role of DKK1 in mouse sex determination and early gonadal develop...

Abstract Chemical preservatives can alter stable isotope ratios in animal tissues. The effects of preservation on δ 13 C and 15 N values have been investigated a variety species, but not 2 H or the freshwater pearl mussel (FPM, Margaritifera margaritifera ) We evaluated effect ethanol (unpreserved vs preserved tissues) over 6 months C, FPM foot gonad Ethanol significantly increased (foot 0.4 ‰;...

Background In mammals, a single exon gene SRY on the Y-chromosome is activated in the XY gonadal primordium and initiates a cascade of molecular and morphological events leading to testicular differentiation. SRY-encoded protein (SRY) is a transcription factor harboring a HMG-box DNAbinding motif that upregulates SOX9, which encodes another transcription factor sharing the DNA binding motif wit...

In this study we tried to reveal if under conditions of high-stress mussels presented some trade off about reproductive aspects like size/frequency oocytes and the cycle mussel Brachidontes rodriguezii. This species dominates rocky intertidal coast Buenos Aires province, Argentine is a prey item several exploited species. Mussels were collected from December 2011 May 2013 in upper level it dist...

Domestikasi terhadap ikan selincah (Belontia hasselti Cuvier, 1831) selama ini masih belum dilakukan, keberadaannya di alam semakin lama berkurang. Hal menyebabkan dometikasi sangat penting untuk sehingga dapat menjaga kelestarian dan memenuhi permintaan pasar tersebut. Padat tebar merupakan salah satu faktor yang mempengaruhi perkembangan tingkat kematangan gonad. Tujuan penelitian mengetahui ...

In the present study, JajroudRiverloach, Oxynoemacheilus bergianus (Derjavin, 1934), was examined monthly for a previous observation of oocyte presence within testes tissues. Accordingly, the gonad development in O. bergianus is examined histologically. Although our data show typical fish gonad development and differentiation in female and some male individuals, some males sho...

Background: Since 1996 the assessment of environmental gamma radiation dose in residential areas of Iranian towns and cities has been accomplished for 10 counties. As a practical method and based on the results of a pilot study, in order to attribute the final results to the whole residential area of a town five stations were selected for every town. The location of individual station wa...

Abstract We measured gonad size (diameter and circumference) by ultrasound used it as a metric to assign stage of maturity in Burbot Lota lota from Lake Roosevelt, Washington. collected paired tissue measurements monthly November 2017 March 2018 processed for histological analysis confirm maturity. diameter circumference ultrasound. also excised (i.e., true diameter) digital calipers measuring ...

Riau Islands Province has high fishery potential because it is surrounded by sea water areas. One of fisheries blue swimming crab commodity. Covid-19 pandemic in the world affected various sectors, one which sector, therefore biological information (bioinformation) during this very useful for sustainability, especially Bintan District. This study aimed at providing bioinformation related to cov...