کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2799912 1568885 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lack of evidence for a role of olfaction on first maturation in farmed sea bass Dicentrarchus labrax
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی علوم غدد
پیش نمایش صفحه اول مقاله
Lack of evidence for a role of olfaction on first maturation in farmed sea bass Dicentrarchus labrax
چکیده انگلیسی


• European sea bass can smell conspecific odors.
• Anosmia does not influence growth or gonad maturation at sexual maturity.
• Anosmia decreases brain KISS and pituitary LH and FSH, but not brain GnRH.

Chemical communication is widespread in the animal kingdom and olfaction constitutes a powerful channel for social and environmental cues. In fish, olfactory stimuli are known to influence physiological processes, including reproduction. Here we investigate the effects of olfaction on puberty in European sea bass Dicentrarchus labrax males. Intact sea bass coming to first maturity (puberty) are able to smell conspecific odours. However, induced anosmia during most of the spermatogenesis period had no effect on the sex ratio, gonad maturation state or gonado-somatic index at the time of reproduction. Furthermore anosmia decreased mRNA expression of brain KISS2 and pituitary LHb and FSHb, but not brain GnRH1 and GnRH3. Thus, although anosmia seems to modify gene expression of key reproduction related genetic factors, it seems to be insufficient to stop or delay growth or gonadal development and maturation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: General and Comparative Endocrinology - Volume 221, 15 September 2015, Pages 114–119
نویسندگان
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