Larkinia grandis (Broderip & G.B. Sowerby I, 1829), an important fishing resource for Mexican communities, is Arcidae clam. It also considered a species with aquaculture potential. In this work we investigated the gonadal phases and sexuality in population of L. Gulf California. Our findings support hypothesis that there one male per female studied. documents shape, position color gonad...

MicroRNAs (miRNAs) are known to have complicated functions in aquatic species, but little is about the role of miRNAs mollusk species under environmental stress. In this study, we performed small RNA sequencing characterize differentially expressed different tissues (whole tissues, digestive glands, gills, and gonads) blue mussels ( Mytilus galloprovincialis ) exposed cadmium (Cd). summary, 107 ...

Knowledge on the reproductive biology of endemic clupeids Limnothrissa miodon and Stolothrissa tanganicae, two main target species pelagic fisheries Lake Tanganyika, is constrained by fragmented monitoring activities. Here, we investigate nursing areas L. miodon, timing activities littoral S. tanganicae in Congolese waters northern end Tanganyika (Bujumbura sub-basin). Nursing were determined y...

Germ cell transplantation (GCT) is a promising assisted reproductive technology for the conservation and propagation of endangered and valuable genetic resources. In teleost fish, GCT in adult gonads has been achieved only in male recipients, limiting greatly the usefulness of this technique in situations where both sexes need equal and timely attention for conservation and/or propagation. Here...

 Some aspects of the reproductive biology of Cobitis keyvani (Mousavi-Sabet, Yerli, Vatandoust, Ozeren and Moradkhani, 2012), an endemic Loach fish species from the Talar River in the southern Caspian Sea basin, in north of Iran was studied by regular monthly collections throughout a year. Fecundity, condition factor, gonado-somatic, modified gonado-somatic and Dobriyal indices were estimated. ...

Turbot is one of the most important farmed fish in Europe. This species exhibits a considerable sexual dimorphism in growth and sexual maturity that makes the all-female production recommended for turbot farming. Our knowledge about the genetic basis of sex determination and the molecular regulation of gonad differentiation in this species is still limited. Our goal was to identify and compare ...

Little is known regarding molecular mechanisms involved in sex determination and differentiation in sturgeon species. We addressed this knowledge gap by using next generation pyrosequencing technology to provide transcript libraries and species-specific sequences for mature gonads of shovelnose sturgeon, Scaphirhynchus platorynchus. We then mined these libraries to identify gender-specific tran...

The reproductive biology of the tarwhine Rhabdosargus sarba has been studied in three very di¡erent environments in Western Australia, namely the lower reaches of the Swan River Estuary and marine waters at the same latitude, i.e. *328S, and a large subtropical marine embayment (Shark Bay) approximately 800 km further north. A macroscopic and histological examination of the gonads demonstrated ...

Teratomas are tumors derived from germ cells, most frequently arising in the gonads. The aim of this study was to determine the number of ovarian teratomas diagnosed in the routine biopsy material at Ljudevit Jurak Clinical Department of Pathology, Sestre milosrdnice University Hospital Center during a 5-year period, as well as their clinical, gross and microscopic characteristics. Teratomas ac...

—Fish maturity status, sex ratio, and age and size at first maturity are important parameters in population assessments and life history studies. In most empirical studies of these variables, fish are sacrificed and dissected to obtain data. However, maturity status and the sex of mature individuals can be determined by inserting an endoscope through a small incision in the body cavity wall and...