Apex predators may have a strong regulatory function in marine ecosystems through both density and behaviorally mediated effects. Understanding the ecological impacts of apex predators is particularly important in predator dominated ecosystems where intra-specific competition may be high...
This is not Sharknado. This is much closer to Birdemic. It does have a small section in space with Eric Roberts who could possibly be the only truly professional actor in the whole cast. I get a sense that some of the spaceship actors noticed the score and endeavored to camp it up. ...
One of the biggest threats to sustainability of shark populations is overexploitation due to high global market demand for fins, meat, skin, and cartilage. Current laws designed to regulate the worldwide trade in certain shark species have not stemmed illegal and unreported trade. In January 2020...
“for fine-scale movement, i think olfaction plays a huge role,” says keller, but he doesn't think it’s powerful enough to guide them hundreds of miles. yet exactly how any animal senses magnetic fields remains “a real mystery,” says lohmann. one theory is that they have magnetite ...
Fishers then reported historical and recent unintentional catches and sightings of juveniles and young-of-the-year (YOY) I. oxyrinchus, which have become increasingly rare in recent decades. This perception reflected the population trend of the I. oxyrinchus in the Mediterranean Sea, where the speci...
(KE-034) Left: Holmesella quadrata scale. (KE-010) <DC> Right: Two Holmesella quadrata scales. This genus was previously reported by Ørvig (1966) from Upper Pennsylvanian rocks in Montgomery Co., Kansas) (KE-019)Site 2 -Geary County #1 -This is the second of Keith's Permian shark...
Although the broken tip of this tooth has been reconstructed, it would have measured at least 70 mm. Left: An assortment of Cretoxyrhina mantelli from various locations in the mouth of the shark. Mostly Gove County, Late Coniacian. Right: Two quite large and nice Cretoxyrhina mantelli ...
Researchers have also used genetic approaches for diet analysis by identifying environmental DNA (eDNA) from stomach contents of organisms34. While eDNA metabarcoding has been more commonly used on feces or scat samples35,36,37, recent studies have used this method to investigate the stomach contents...
(a–d) Fluorescent and white light pigmentation pattern of a female chain catshark (Scyliorhinus retifer, 32.2 cm; and (e–h) of a maleS. retifer(26.4 cm). Males have pelvic claspers that fluoresce, whereas the females lack claspers, and the reticulated pigmentation pattern is mor...
“Some nights you have it, some nights you don’t. But playoff time you got to try and find it every night and I thought we got deep and were able to get rewarded for a lot of our hard work.” The boost from the top three scorers could be expected for the Avalanche. But they ...