Have the scientists autopsyed both species? Would that tell if they were indeed same species? Or are they so closely related that EVERYTHING is identical? If that's the case then it may just be the same as comparing low grade and high quality Marbles.
Black Diamond... Black Diamond... Black Diamond
- Thread starter Mark Huveneers
- Start date
DB junkie;2393967; said:
Yes they have captured and studied both. For instance leo and henlei have different size teeth so thats a specific way to tell them apart. Leo are large teeth and henlei smaller teeth. If BD and leo were different they would have seen the differences when the rays were disected and studied. Mouth size, teeth size or bone structure etc.
Sounds to me like BD and leos are same species but I know little about rays......
T1..... Are you saying there is NO way to tell apart an IT and ST or asking? I imagine there's a difference in scale count or teeth.... but maybe I'm wrong. I've never even seen a ST in person.........
T1..... Are you saying there is NO way to tell apart an IT and ST or asking? I imagine there's a difference in scale count or teeth.... but maybe I'm wrong. I've never even seen a ST in person.........
csx4236;2394087; said:
the problem is science is not concrete., but is changing everyday. what use to define species may not apply in all cases. humans for instance, black and white, different skin color, height, proportions, from different climate, different parts of the world, different diet, different habits, some cannibals, and some vegetarians, but still the same species. If any other animal with that many variations, would defintely considered as a new species.
there are clumpers and spliters, the cichlid people tend to split the things with the most minute differences, like cyphotilapia frontosa and gibberosa, almost identical, just slight variations.
so are the ray communities clumpers or splitter?
as far as the teeth being bigger or smaller, i feel that through Darwin's theory, they will adapt over time to best suit their local diet or needs. Like common carp, cyprinus carpio, the ones in the lakes that lake predators tend to grow long and slender, where there are predators like pikes (esox), they grow tall and deep bodied to avoid predation, still the same species.
also think Dalmation...Leopoldi, bd, henlei
people, some are fat, tall, skinny, short, slant eyed, big eyed, etc...
Sorry, but it's vica versa.csx4236;2394087; said:
Compared with P. leopoldi P. henlei has "relatively larger teeth, in lower number of rows" (Rosa 1985) and therefore the official english name for P. henlei is Bigtooth river stingray.
http://filaman.uni-kiel.de/Summary/...761&genusname=Potamotrygon&speciesname=henlei
