Disease surveillance of the amphibian chytrid fungus Batrachochytrium dendrobatidis in Papua New Guinea. Opening days for fauna-friendly right-of-ways: Fauna receive royal treatment. Bellinger River Turtles: Assessment of genetic diversity and hybridization in a species under threat.
In this species, individuals pile up on top of one another to form a mound Figure Sources Bull, James. Another example in which sex determination is affected by the location of the organism is the case of the slipper snail Crepidula fornicata.
In a study directed by Francesc Piferrer, from the Institute of Marine Temperature dependent sex determination animals that hibernate in Seattle in Barcelona, published in the open-access journal PLoS ONE on July 30, the Spanish researchers used field and laboratory data to critically analyze the presence of TSD in the 59 species of fish where this type of sex determining mechanism had been postulated.
This correlation is seen to hold under natural conditions as well. Thomas, M. Theoretical models predict that selection should favour ESD over genotypic sex determination when the developmental environment differentially influences male versus female fitness that is, the Charnov—Bull model 4but empirical evidence for this hypothesis remains elusive in amniote vertebrates—the clade in which ESD is most prevalent 5.
One of the best-studied reptiles is the European pond turtle, Emys obicularis.
Melding they physical and the physiological: Do temperature differences with soil depth cause developmental asynchrony in turtle nests? This thermosensitive period occurs after the egg has been laid, so sex determination in these reptiles is at the mercy of the ambient conditions affecting egg clutches in nests.
Nicole Valenzuela and Valentine Lance, 21— Sex in dragons: Comparative genomics and the molecular basis of genetic and environmental sex determination. A new genus of Australian chelid turtle and the relationships of the short-necked taxa. Goodsell, T.