نتایج جستجو برای: Intersex

تعداد نتایج: 722  

Journal: :Aquatic toxicology 2009
Jo Ellen Hinck Vicki S Blazer Christopher J Schmitt Diana M Papoulias Donald E Tillitt

Intersex occurrence in freshwater fishes was evaluated for nine river basins in the United States. Testicular oocytes (predominantly male testes containing female germ cells) were the most pervasive form of intersex observed, even though similar numbers of male (n=1477) and female (n=1633) fish were examined. Intersex was found in 3% of the fish collected. The intersex condition was observed in...

ژورنال: حقوق پزشکی 2020
Bayat Komitki, Mahnaz, Enjelas, Kosar,

Incontrovertibly each person’s body has an undeniable role in shaping personality and in self- definition of ego. Nowadays and based on scientific efforts, we know sex and accordingly, gender, as a spectrum in inter bodily experience. Over the long years intersex status was considered a "disorder", but recently and in the light of modern medical, psychiatric and cognitive science, "different" e...

Journal: :Biology of reproduction 2002
S Jobling N Beresford M Nolan T Rodgers-Gray G C Brighty J P Sumpter C R Tyler

Disruption in gonadal development of wild roach living in U.K. rivers receiving large volumes of treated sewage effluent is manifest in a variety of ways, ranging from malformation of the germ cells and/or reproductive ducts to altered gamete production. Intersex fish were also found to have an altered endocrine status and an elevated concentration of plasma vitellogenin. Gonadal growth was inh...

Journal: :Environmental toxicology and chemistry 2017
Crystal S D Lee Pow J Mac Law Thomas J Kwak W Gregory Cope James A Rice Seth W Kullman D Derek Aday

Male fish are susceptible to developing intersex, a condition characterized by the presence of testicular oocytes. In the present study, the relationship between intersex and exposure to estrogenic endocrine active contaminants (EACs) was assessed for 2 genera of sport fish, Micropterus and Lepomis, at 20 riverine sites. Seasonal trends and relationships between EACs and intersex (prevalence an...

2011
Catherine A. Harris Patrick B. Hamilton Tamsin J. Runnalls Veronica Vinciotti Alan Henshaw Dave Hodgson Tobias S. Coe Susan Jobling Charles R. Tyler John P. Sumpter

BACKGROUND The feminization of nature by endocrine-disrupting chemicals (EDCs) is a key environmental issue affecting both terrestrial and aquatic wildlife. A crucial and as yet unanswered question is whether EDCs have adverse impacts on the sustainability of wildlife populations. There is widespread concern that intersex fish are reproductively compromised, with potential population-level cons...

Journal: :Genetical research 2003
S Parnes I Khalaila G Hulata A Sagi

In the Australian red-claw crayfish Cherax quadricarinatus (von Martens) (Decapoda, Parastacidae), a gonochoristic species, seven different combinations of intersex individuals (with both male and female genital openings) have been described. However, to date, the genetic basis for this phenomenon has not been investigated. This study was designed to test a simple chromosome-based sex-determina...

Journal: :Marine pollution bulletin 2015
Corina M Ciocan Elena Cubero-Leon William J Langston Nick Pope Keith Cornelius E M Hill Diana Alvarez-Munoz Paolo Indiveri Adelaide Lerebours Christophe Minier Jeanette M Rotchell

Intersex, the appearance of female characteristics in male gonads, has been identified in several aquatic species. It is a widespread phenomenon in populations of the bivalve, Scrobicularia plana, from the southwest coast of the U.K. Genes previously identified as differentially expressed (ferritin, testicular haploid expressed gene, THEG, proliferating cell nuclear antigen, PCNA; receptor acti...

Journal: :Hormones and behavior 2006
Assaf Barki Ilan Karplus Rivka Manor Amir Sagi

In crustaceans, male differentiation and primary and secondary characteristics are regulated by the androgenic gland (AG). In gonochoristic crustaceans, the AG is also linked to intersexuality. Whereas the co-occurrence of various male and female characteristics has been demonstrated in intersex crustaceans, little is known regarding sexually dimorphic behavior patterns in such individuals. In ...

Journal: :TSQ: Transgender Studies Quarterly 2014

Journal: :Environmental toxicology and chemistry 2012
Yanbin Zhao Jianying Hu

Although intersex of fish species has been widely reported in aquatic environments, there is no appropriate biomarker of the effects to assess the occurrence of intersex. In the present study, mRNA expression profiles of 14 genes, which are either involved in ovary development and maintenance or have relatively high mRNA transcription levels in ovarian gene expression profiles in fish species, ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید