نتایج جستجو برای: hermaphroditism

تعداد نتایج: 1485  

Journal: :Environmental Health Perspectives 2003
Tyrone Hayes Kelly Haston Mable Tsui Anhthu Hoang Cathryn Haeffele Aaron Vonk

Atrazine is the most commonly used herbicide in the United States and probably the world. Atrazine contamination is widespread and can be present in excess of 1.0 ppb even in precipitation and in areas where it is not used. In the current study, we showed that atrazine exposure (> or = to 0.1 ppb) resulted in retarded gonadal development (gonadal dysgenesis) and testicular oogenesis (hermaphrod...

Journal: :Journal of theoretical biology 1998
P H Crowley T Cottrell T Garcia M Hatch R C Sargent B J Stokes J M White

We introduce a complementarity dilemma, a two-player, binary response game in which the playoffs are highest when the two players respond differently. Using the classifier EvA, we determine the evolutionary dynamics and structure of strategies that evolve to play an iterated version of this game, and we relate the results to the evolution of major types of sexual reproduction, particularly simu...

Journal: :Proceedings. Biological sciences 2014
Craig R McClain Ryan Filler Josh R Auld

The diversity of reproductive strategies in nature is shaped by a plethora of factors including energy availability. For example, both low temperatures and limited food availability could increase larval exposure to predation by slowing development, selecting against pelagic and/or feeding larvae. The frequency of hermaphroditism could increase under low food availability as population density ...

Journal: :Ege Journal of Fisheries and Aquatic Sciences 2022

Eighty-six specimens of longnose spurdog Squalus blainville were examined for determination some bio-ecogical features. During the study, one was determined as a hermaphrodite with clasper and yolk sac formation. This very rare case in elasmobranch is report hermaphroditism recorded from Aegean Sea.

Journal: :The Japanese Journal of Urology 1968

Journal: :Archives of Disease in Childhood 1960

Journal: :Proceedings of the Royal Society of Medicine 1945

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