Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758)
The reproductive organs of both male and female European lobsters (Homarus gammarus) are H-shaped gonads that lie dorsal to the gut on the large hepatopancreas. The ovary consists of a pair of tubular, parallel lobules with a connecting bridge. The germarium of the ovary containing oogonia is concen...
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ftistanbuluniv:oai:http://acikerisim.istanbul.edu.tr:20.500.12627/30927 2023-05-15T16:34:43+02:00 Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758) Erkan, MELİKE BELKIS Ayun, YASEMİN İstanbul Üniversitesi , Fen Fakültesi , Biyoloji 36475 2014 https://hdl.handle.net/20.500.12627/30927 https://doi.org/10.2478/s11535-013-0148-7 eng eng CENTRAL EUROPEAN JOURNAL OF BIOLOGY Erkan M. B. , Ayun Y., "Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758)", CENTRAL EUROPEAN JOURNAL OF BIOLOGY, cilt.9, sa.1, ss.37-48, 2014 1895-104X av_26c6e22b-050d-44d0-a855-481d75fa759c vv_1032021 http://hdl.handle.net/20.500.12627/30927 https://doi.org/10.2478/s11535-013-0148-7 9 1 37 48 Yaşam Bilimleri Temel Bilimler Temel Tıp Bilimleri Tıbbi Biyoloji Biyokimya Sağlık Bilimleri Tıp Yaşam Bilimleri (LIFE) Biyoloji ve Biyokimya BİYOLOJİ Makale 2014 ftistanbuluniv https://doi.org/20.500.12627/30927 https://doi.org/10.2478/s11535-013-0148-7 2022-08-10T13:29:05Z The reproductive organs of both male and female European lobsters (Homarus gammarus) are H-shaped gonads that lie dorsal to the gut on the large hepatopancreas. The ovary consists of a pair of tubular, parallel lobules with a connecting bridge. The germarium of the ovary containing oogonia is concentrated in the center of the ovarian lobe. As oogonesis proceeds, the oocytes move to the peripheral regions of the ovary. The follicle cells begin to surround the oocytes in the previtellogenic stage, and the mature oocytes are completely surrounded by the follicle cells. Carbohydrates exist in both early and late vitellogenic oocytes that give PAS positive reaction. However, their rising protein content in late vitellogenic oocytes makes them stain with Bromophenol blue. Testes show convoluted lobules with a germinal epithelium and a central collecting duct, and the paired vasa deferentia have three distinct parts. Spermatophores are nonpedunculate and tubular, which extrude as a continuous column and consist of a sperm mass covered with primary and secondary layers. The primary layer stains with Bromophenol Blue and gives a PAS positive reaction. But the secondary layer only weakly stains with Bromophenol Blue. The histochemical results may indicate that the function of the two layers is different. Article in Journal/Newspaper Homarus gammarus İstanbul Üniversitesi Açık Erişim Sistemi Vasa ENVELOPE(25.177,25.177,67.587,67.587) Open Life Sciences 9 1 37 48 |
institution |
Open Polar |
collection |
İstanbul Üniversitesi Açık Erişim Sistemi |
op_collection_id |
ftistanbuluniv |
language |
English |
topic |
Yaşam Bilimleri Temel Bilimler Temel Tıp Bilimleri Tıbbi Biyoloji Biyokimya Sağlık Bilimleri Tıp Yaşam Bilimleri (LIFE) Biyoloji ve Biyokimya BİYOLOJİ |
spellingShingle |
Yaşam Bilimleri Temel Bilimler Temel Tıp Bilimleri Tıbbi Biyoloji Biyokimya Sağlık Bilimleri Tıp Yaşam Bilimleri (LIFE) Biyoloji ve Biyokimya BİYOLOJİ Erkan, MELİKE BELKIS Ayun, YASEMİN Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758) |
topic_facet |
Yaşam Bilimleri Temel Bilimler Temel Tıp Bilimleri Tıbbi Biyoloji Biyokimya Sağlık Bilimleri Tıp Yaşam Bilimleri (LIFE) Biyoloji ve Biyokimya BİYOLOJİ |
description |
The reproductive organs of both male and female European lobsters (Homarus gammarus) are H-shaped gonads that lie dorsal to the gut on the large hepatopancreas. The ovary consists of a pair of tubular, parallel lobules with a connecting bridge. The germarium of the ovary containing oogonia is concentrated in the center of the ovarian lobe. As oogonesis proceeds, the oocytes move to the peripheral regions of the ovary. The follicle cells begin to surround the oocytes in the previtellogenic stage, and the mature oocytes are completely surrounded by the follicle cells. Carbohydrates exist in both early and late vitellogenic oocytes that give PAS positive reaction. However, their rising protein content in late vitellogenic oocytes makes them stain with Bromophenol blue. Testes show convoluted lobules with a germinal epithelium and a central collecting duct, and the paired vasa deferentia have three distinct parts. Spermatophores are nonpedunculate and tubular, which extrude as a continuous column and consist of a sperm mass covered with primary and secondary layers. The primary layer stains with Bromophenol Blue and gives a PAS positive reaction. But the secondary layer only weakly stains with Bromophenol Blue. The histochemical results may indicate that the function of the two layers is different. |
author2 |
İstanbul Üniversitesi , Fen Fakültesi , Biyoloji 36475 |
format |
Article in Journal/Newspaper |
author |
Erkan, MELİKE BELKIS Ayun, YASEMİN |
author_facet |
Erkan, MELİKE BELKIS Ayun, YASEMİN |
author_sort |
Erkan, MELİKE BELKIS |
title |
Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758) |
title_short |
Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758) |
title_full |
Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758) |
title_fullStr |
Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758) |
title_full_unstemmed |
Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758) |
title_sort |
morphological and histochemical examination of male and female gonads in homarus gammarus (l. 1758) |
publishDate |
2014 |
url |
https://hdl.handle.net/20.500.12627/30927 https://doi.org/10.2478/s11535-013-0148-7 |
long_lat |
ENVELOPE(25.177,25.177,67.587,67.587) |
geographic |
Vasa |
geographic_facet |
Vasa |
genre |
Homarus gammarus |
genre_facet |
Homarus gammarus |
op_relation |
CENTRAL EUROPEAN JOURNAL OF BIOLOGY Erkan M. B. , Ayun Y., "Morphological and histochemical examination of male and female gonads in Homarus gammarus (L. 1758)", CENTRAL EUROPEAN JOURNAL OF BIOLOGY, cilt.9, sa.1, ss.37-48, 2014 1895-104X av_26c6e22b-050d-44d0-a855-481d75fa759c vv_1032021 http://hdl.handle.net/20.500.12627/30927 https://doi.org/10.2478/s11535-013-0148-7 9 1 37 48 |
op_doi |
https://doi.org/20.500.12627/30927 https://doi.org/10.2478/s11535-013-0148-7 |
container_title |
Open Life Sciences |
container_volume |
9 |
container_issue |
1 |
container_start_page |
37 |
op_container_end_page |
48 |
_version_ |
1766024687353069568 |