Sympatric speciation as a consequence of male pregnancy in seahorses
نویسندگان
چکیده
منابع مشابه
Sympatric speciation as a consequence of male pregnancy in seahorses.
The phenomenon of male pregnancy in the family Syngnathidae (seahorses, pipefishes, and sea dragons) undeniably has sculpted the course of behavioral evolution in these fishes. Here we explore another potentially important but previously unrecognized consequence of male pregnancy: a predisposition for sympatric speciation. We present microsatellite data on genetic parentage that show that seaho...
متن کاملSympatric speciation
What is sympatric speciation? The likelihood of sympatric speciation is perhaps the most controversial aspect of speciation, and certainly one of the most contested questions in evolutionary biology. Speciation in general is defined as the evolution of strong, genetically based ‘isolating barriers’ between populations that prevent them from exchanging genes, for example, mate discrimination, ha...
متن کاملSympatric Speciation in Insects
Insects are among the most abundant multicellular organisms on earth. Sampling in the tropics and subtropics suggests that there are 10 to 30 million species of insects (Erwin 1982). As a group, invertebrate insects, therefore, represent an inordinately large percentage of the world’s fauna, far outnumbering their larger and more conspicuous vertebrate cousins, such as fish (about 24 000), amph...
متن کاملSympatric speciation without borders?
The biogeography of speciation remains a controversial issue and the process of allopatric speciation reigns. Sympatric speciation differs from allopatric speciation in terms of geographic setting and the role of selection in bringing about reproductive isolating mechanisms, making it a particularly fascinating and controversial subject for evolutionary biologists. Mayr (1947) explained the dif...
متن کاملSympatric Speciation in a Simple Food Web
Observations of the evolution of species groups in nature, such as well recognized Galapagos finches, have motivated much theoretical research aimed at understanding the processes associated with such radiations. The Penna model is one such model and has been widely used to study aging. In this paper we use the basic Penna model to investigate the process of sympatric speciation in a simple foo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2003
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1131969100