Brain differences in ecologically differentiated sticklebacks
نویسندگان
چکیده
منابع مشابه
Variable neuroendocrine responses to ecologically-relevant challenges in sticklebacks.
Variable neuroendocrine responses to ecologically-relevant challenges in sticklebacks. PHYSIOL BEHAV 00(0) 000-000, 2006. Here, we compare the behavioral, endocrine and neuroendocrine responses of individual sticklebacks exposed to either an unfamiliar conspecific or to a predator. We found that the two stressors elicited a similar hypothalamic-pituitary-interrenal response as assessed by whole...
متن کاملA test of ecologically dependent postmating isolation between sympatric sticklebacks.
Ecological speciation occurs when reproductive isolation evolves ultimately as a result of divergent natural selection between populations inhabiting different environments or exploiting alternative resources. I tested a prediction of the ecological model concerning the fitness of hybrids between two young, sympatric species of threespine sticklebacks (Benthics and Limnetics). The two species a...
متن کاملSexual imprinting on ecologically divergent traits leads to sexual isolation in sticklebacks.
During sexual imprinting, offspring learn parental phenotypes and then select mates who are similar to their parents. Imprinting has been thought to contribute to the process of speciation in only a few rare cases; this is despite imprinting's potential to generate assortative mating and solve the problem of recombination in ecological speciation. If offspring imprint on parental traits under d...
متن کاملEnvironmental enrichment, sexual dimorphism, and brain size in sticklebacks
Evidence for phenotypic plasticity in brain size and the size of different brain parts is widespread, but experimental investigations into this effect remain scarce and are usually conducted using individuals from a single population. As the costs and benefits of plasticity may differ among populations, the extent of brain plasticity may also differ from one population to another. In a common g...
متن کاملSticklebacks
together with fire and mowing. The team found that native perennials reduced soil moisture, soil nitrogen, and light to lower levels than did exotic annuals. This ability to outcompete the exotic species for these resources means that native perennials should be able to increase in abundance. This suggests that the current rarity of native perennials at the researchers’ site is caused by native...
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: Current Zoology
سال: 2017
ISSN: 1674-5507,2396-9814
DOI: 10.1093/cz/zox074