Marine sharks and rays 'use' urea to delay reproduction, finds study
Urea—the main component of human urine—plays an important role in the timing of maturation of sharks, rays and other cartilaginous fish.
Urea—the main component of human urine—plays an important role in the timing of maturation of sharks, rays and other cartilaginous fish.
Plants & Animals
May 1, 2024
0
154
In what is an intriguing mix of past and future, an international team of researchers, including some from the University of Bonn, has stumbled upon a surprising window to the past in Kourou in French Guiana. In the clay ...
Paleontology & Fossils
Mar 26, 2024
0
195
Rising temperatures, changes in major currents, oxygen depletion at great depths: the Gulf of St. Lawrence has undergone major changes in its environmental conditions in recent decades. That has put many species in danger ...
Plants & Animals
Mar 21, 2024
0
9
The mystery behind why Alaskan horses, cryptodiran turtles and island lizards shrank over time may have been solved in a new study.
Evolution
Jan 18, 2024
1
102
Upon infection or immunization, all jawed vertebrate species generate proteins called antibodies that bind and neutralize pathogens. Strong and long-lasting antibody responses in warm-blooded species such as mammals are produced ...
Molecular & Computational biology
Dec 1, 2023
0
35
A research team from the University of Cologne, in collaboration with colleagues from the Leibniz Institute for Food Systems Biology in Freising, has discovered a receptor for bitter taste in twelve different cartilaginous ...
Evolution
Nov 13, 2023
0
57
The physical relief—in body weight—that temperate fish like cod and Atlantic herring experience after they spawn for the first time allows them to breathe in more oxygen and develop a voracious appetite, all of which ...
Plants & Animals
Nov 6, 2023
1
27
A pair of paleontologists at Universität Hohenheim's Staatliches Museum für Naturkunde Stuttgart has found a fossilized Jurassic-era fish that appears to have died after swallowing an overly large ammonite. Samuel Cooper ...
If a fishery manager could only know one thing about a fish species, it should be lifespan. But many species live out their lives on time scales much longer than we can observe. And even the short-lived species do a good ...
Plants & Animals
May 25, 2023
0
3
Scientists have discovered a new species of mosasaur, a sea-dwelling lizard from the age of the dinosaurs, with strange, ridged teeth unlike those of any known reptile. Along with other recent finds from Africa, it suggests ...
Paleontology & Fossils
May 17, 2023
0
791