دورية أكاديمية
أعرض في EDS

Zygoparity and sex steroid hormone profiles in bluemouth Helicolenus dactylopterus.

التفاصيل البيبلوغرافية
العنوان: Zygoparity and sex steroid hormone profiles in bluemouth Helicolenus dactylopterus.
المؤلفون: Sequeira V; MARE-Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal., Couto E; CCMAR-Centre for Marine Sciences, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal., Neves A; MARE-Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal.; Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal., Vieira AR; MARE-Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal., Paiva RB; MARE-Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal., Canario AVM; CCMAR-Centre for Marine Sciences, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal., Gordo LS; MARE-Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal.; Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal.
المصدر: Journal of fish biology [J Fish Biol] 2017 May; Vol. 90 (5), pp. 2157-2169. Date of Electronic Publication: 2017 Mar 21.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Blackwell Publishing Country of Publication: England NLM ID: 0214055 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-8649 (Electronic) Linking ISSN: 00221112 NLM ISO Abbreviation: J Fish Biol Subsets: MEDLINE
أسماء مطبوعة: Publication: 2003- : Oxford, UK : Blackwell Publishing
Original Publication: London, New York, Published for the Fisheries Society of the British Isles by Academic Press.
مواضيع طبية MeSH: Gonadal Steroid Hormones/*physiology , Perciformes/*physiology, Animals ; Atlantic Ocean ; Female ; Gonadal Steroid Hormones/blood ; Male ; Oocytes/growth & development ; Reproduction/physiology ; Seasons
مستخلص: Two hundred and seven individuals (103 females and 104 males) of bluemouth Helicolenus dactylopterus (Scorpaeniformes, Sebastidae), a commercially important deep-water species with an unusual reproductive strategy, from the eastern Atlantic Ocean ranging from 13·9 to 37·5 cm total length (L T ) were analysed from September 2011 to October 2012. The analysis included gonad maturity phases and blood-plasma levels of oestradiol-17β (E 2 ), 11-ketotestosterone (11-KT) and 17,20β-dihydroxypregn-4-en-3-one (17,20β-P). Results confirmed the existence of an annual reproductive cycle with asynchrony between females and males and a spawning season from January to May. A pronounced peak in 17,20β-P in October for both sexes was associated with possible mating behaviour and recent copula. Levels of E 2 increased preceding the elevation of the gonado-somatic index during ovarian growth and were lower during regression and regeneration. The frequency distribution of oocyte-embryonic stages and variation of hormone levels suggest the existence of daily rhythms. Fertilization was detected between 2000-0000 and 0800-1200 h and spawning took place throughout the day peaking between 2000 and 0000 h. The cyclic pattern of sex steroids and ovarian recruitment provides a new insight into the reproductive strategy of this species.
(© 2017 The Fisheries Society of the British Isles.)
فهرسة مساهمة: Keywords: 11-ketotestosterone; 17,20β-dihydroxypregn-4-en-3-one; oestradiol-17β; reproductive strategy
المشرفين على المادة: 0 (Gonadal Steroid Hormones)
تواريخ الأحداث: Date Created: 20170322 Date Completed: 20171010 Latest Revision: 20181202
رمز التحديث: 20221213
DOI: 10.1111/jfb.13299
PMID: 28321875
قاعدة البيانات: MEDLINE
الوصف
تدمد:1095-8649
DOI:10.1111/jfb.13299