Neuroendocrine mechanisms of alternative reproductive tactics: the chemical language of reproductive and social plasticity
Neuroendocrine mechanisms of alternative reproductive tactics: the chemical language of reproductive and social plasticity
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DOI：
10.1017/cbo9780511542602.007
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发表时间：
2008-01-01
期刊：
影响因子：
--
通讯作者：
Forlano, Paul M.
中科院分区：
文献类型：
--
作者：
Bass, Andrew H.;Forlano, Paul M.
The wide range of variation in reproductive tactics displayed among teleost fishes has provided a rich source of natural experiments for investigating the neural mechanisms of alternative reproductive tactics (ARTs). These studies have mainly focused on identifying the location and extent of neuropeptide-containing cells in the forebrain's preoptic area (POA), in part, because of the well-established influence of these neurons on reproductive mechanisms. We first review the ARTs of teleost species that have served as model systems for investigating the neural mechanisms of reproductive plasticity and then the general organization of the POA of vertebrates. Comparative surveys then show how life-history trajectories and reproductive tactics vary with inter- and intrasexual dimorphisms in the size and number of POA neurons that synthesize either arginine vasotocin (AVT) or gonadotropin-releasing hormone (GnRH). The emerging evidence for the potential role of neurosteroids in mechanisms of reproductive plasticity inclusive of ARTs is then considered before concluding with a listing of a suite of neuroendocrinological traits that may provide proximate mechanisms essential to the widespread evolution of ARTs among teleost fish.
