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Impact of seasonal variation on the spermatozoa reproductive cycle of hemantura walgo (müller and henle, 1841) from Iraqi marine waters
Other Title(s)
دراسة التأثيرات الموسمية على الدورة التكاثرية لنضج الحيوانات المنوية لذكور قوبع Himantura walga
Joint Authors
Jasim, Janan Hasan
Nasir, Nuri Abd al-Nabi
Source
Issue
Vol. 60, Issue 1 (31 Mar. 2019), pp.29-35, 7 p.
Publisher
University of Baghdad College of Science
Publication Date
2019-03-31
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Topics
Abstract EN
The impact of seasonal variation on the spermatozoa reproductive cycle of Hemantura walgo in Western North of Arabian Gulf from January 2016 to December 2017 was studied.
A total 225 individuals males of H.
walga were collected using beach net.
Gonads Somatic index (GSI) was high during May (10.1) and September (9.98) and the lowest values were recorded during on February, July and October with their values were 0.85, 1.21 and 1.43 respectively.
Mature males were noticed during May and September which indicates there are two reproduction periods for H.
walga during the year.
The relationship between weight and width desk of H.
walga was also investigated and generally demonstrated positive allometric growth (b > 3) for this species Thus, this study supplies to a better understand of seasonal variation on the spermatozoa reproductive cycle of H.
walgo.
The findings of this study also are essential to the estimation, protection and management of H.
walgo , in addition to providing plan for the improvement of conservation strategie
American Psychological Association (APA)
Nasir, Nuri Abd al-Nabi& Jasim, Janan Hasan. 2019. Impact of seasonal variation on the spermatozoa reproductive cycle of hemantura walgo (müller and henle, 1841) from Iraqi marine waters. Iraqi Journal of Science،Vol. 60, no. 1, pp.29-35.
https://search.emarefa.net/detail/BIM-892028
Modern Language Association (MLA)
Nasir, Nuri Abd al-Nabi& Jasim, Janan Hasan. Impact of seasonal variation on the spermatozoa reproductive cycle of hemantura walgo (müller and henle, 1841) from Iraqi marine waters. Iraqi Journal of Science Vol. 60, no. 1 (2019), pp.29-35.
https://search.emarefa.net/detail/BIM-892028
American Medical Association (AMA)
Nasir, Nuri Abd al-Nabi& Jasim, Janan Hasan. Impact of seasonal variation on the spermatozoa reproductive cycle of hemantura walgo (müller and henle, 1841) from Iraqi marine waters. Iraqi Journal of Science. 2019. Vol. 60, no. 1, pp.29-35.
https://search.emarefa.net/detail/BIM-892028
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 34-35
Record ID
BIM-892028