6,404 reputation
11234
bio website
location
age
visits member for 1 year
seen 2 hours ago

11h
accepted Gender and age-specific mutation rate in plants
12h
comment Facultative Cannibalism?
@winterblood Thanks! Seems indeed that the subject is controversial. Feel free to edit my answer if you want to improve it.
12h
revised Facultative Cannibalism?
deleted 277 characters in body
20h
answered Why are there so many sex determining systems in animals
20h
revised Facultative Cannibalism?
added 120 characters in body
20h
comment Facultative Cannibalism?
@winterblood Ok, thanks for the comment. I edited my post to indicate that it seems to be a myth. If you have a reference, the answer could be definitive. Thanks
20h
comment Facultative Cannibalism?
@rumtscho Indeed this is interesting and is a counter-argument to my hypothesis. However, developmental time might be a proxy for fitness. Similar mechanisms exist in bees. The first queen to hatch will usually be able to kill all the other before they even hatch.
20h
comment Facultative Cannibalism?
Ha ha seems that I would have better to remain silence on possible explanation of the shark siblicide. I have to confess that it was a quick thought. @TecBrat No, I didn't any of these naïve mistake. I am just saying that the parents may want to make sure that their unique offspring is fit to carry the parents' gene further.
1d
awarded  Enlightened
1d
awarded  Nice Answer
1d
revised Facultative Cannibalism?
deleted 15 characters in body
1d
comment Facultative Cannibalism?
My first thought of why siblicide may evolve in sharks is: It seems a good solution for the parents to make sure that the only offspring they want to produce will carry very good genes. It is like producing a "pre-selected" offspring. r-strategy species don't do that. They let selection act later. But that makes sense that siblicide occurs in sharks as they perform some parental care and they don't want to lose energy for unfit kids. according to my hypothesis the question might then be "Why don't everybody does that?" But I really don't know much. I just had fun formulating a hypothesis!
1d
revised Facultative Cannibalism?
added 20 characters in body
1d
comment Facultative Cannibalism?
I don't know much about all that. I'd suggest you to have a look to the wiki articles I linked in my answer and eventually come up with a more accurate question on another post as this post was fairly broad.
1d
revised Facultative Cannibalism?
added 188 characters in body
1d
revised Facultative Cannibalism?
added 188 characters in body
1d
revised Facultative Cannibalism?
added 188 characters in body
1d
revised Facultative Cannibalism?
added 188 characters in body
1d
answered Facultative Cannibalism?
Jul
26
reviewed Leave Closed Did the eugenics program in Nazi Germany have a measurable effect?