Dozens of surveyors, sometimes climbing out of a two-foot-square bucket in rough weather to reach branches soaring 75 feet, perform these jobs each weekday throughout the city, looking for often-camouflaged egg sites or dime-sized exit holes.
The eggs were discovered in the Montsec area of Lleida, in the south Pyrenees, an area rich in dinosaur egg sites, most of which are Upper Cretaceous sauropods living around 70 million years ago.
"The intrusion is believed to have resulted in the death of at least one endangered Devils Hole pupfish, and fisheries biologists are trying to ascertain the extended damage that may have been done to food sources and egg sites, which could lead to more loss of a species whose numbers are now below the last count of 115 in existence," the Nye County Sheriff's Office said, according to the Times.
Some of the most well known and compelling evidence comes from Jack Horner's (Museum of the Rockies) work at the "Egg Mountain" site in Montana, where he has documented evidence of a large nesting area used by hadrosaurian (duckbilled) dinosaurs.
For eggs with cage-free and free-range claims, AMS personnel visit each egg production site twice per year to verify animal husbandry practices.
In our study, the material sampled for sequencing included leaf tissue immediately adjacent to the egg laying site as well as that some distance away.
Chitinases and glucan endo-1,3-ß-glucosidase are also known to be induced at and near the egg laying site in A. thaliana by pierid eggs and could play a defensive role against newly hatched larvae [ 31].
To provide a suitable natural substrate for C. terminifera oviposition, red-brown earth topsoil (A horizon) was collected to a depth of approximately 15 cm from an egg bed site near Griffith, in the Riverina region of New South Wales (34°07.913S, 147°23.721E).
Plants in response to oviposition produce neoplasm at the egg deposition site, which elevates the eggs and drops them down (Doss et al. 2000) and also produce ovicidal compounds that kill the eggs (Seino et al. 1996; Yamasaki et al. 2003).
Once you have clicked on an egg, the site will direct you to the egg's code page.
