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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Indonesian Journal of Geography JOURNAL OF COASTAL DEVELOPMENT ILMU KELAUTAN: Indonesian Journal of Marine Sciences Reaktor Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology International Journal of Science and Engineering (IJSE) Jurnal Pasir Laut Jurnal Ilmu Lingkungan Berkala Perikanan Terubuk Jurnal Pengembangan Energi Nuklir Management of Aquatic Resources Journal (Maquares) Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Kelautan Tropis Acta Aquatica: Aquatic Sciences Journal Jurnal Akuatiklestari Jurnal Penelitian Perikanan Indonesia Bioscientist : Jurnal Ilmiah Biologi
Norma Afiati
Department Of Aquatic Resource Management, Faculty Of Fisheries And Marine Sciences, Diponegoro University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Social Sciences Other

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Journal : JOURNAL OF COASTAL DEVELOPMENT

 1 
HERMAPHRODITISM IN Anadara granosa (L.) and Anadara antiquata (L.) (BIVALVIA: ARCIDAE) FROM CENTRAL JAVA Norma Afiati
JOURNAL OF COASTAL DEVELOPMENT Vol 10, No 3 (2007): Volume 10, Number 3, Year 2007
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Gonad maturation and sexuality in Central Java populations of A. granosa and A. antiquata were studied by means of macroscopic examination of the visceral mass, microscopic examination of smears of gonadal products and by histological technique. In this study, hermaphrodites occurred extremely rarely, i.e. less than 1.5% for A. granosa and less than 1% for A. antiquata, were observed with both male and female gametes present within the same individual follicles. Unbalanced sex ratios derived from size frequency distribution of the sample revealed that the increased percentage of females with increasing size suggest the occurrence of sequential protandric hermaphrodite with only a single sex change during their life history, i.e. from male to female. The preponderance of juvenile males within the Wedung population should be seen as the advantage of firstly being male, since some energy could be saved and redirected towards somatic growth because in Bivalvia there is a trade-off between growth and reproduction.
GONAD MATURATION OF TWO INTERTIDAL BLOOD CLAMS Anadara granosa (L.) AND Anadara antiquata (L.) (BIVALVIA: ARCIDAE) IN CENTRAL JAVA Norma Afiati
JOURNAL OF COASTAL DEVELOPMENT Vol 10, No 2 (2007): Volume 10, Number 2, Year 2007
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

The reproductive cycles of male and female Anadara granosa and Anadara antiquata which have been studied and compared by histological techniques showed great anatomical similarity. Gametogenesis is associated with a system of follicle cells which break down as the gametes approach maturity. The arrangement of follicle cells is characteristics of the sex. In the female, gametogonia are peripheral to the follicle cells, whilst in the male they are interstitial. The process of spermatogenesis parallel the classical vertebrate pattern, i.e. successive layers of spermatogenic cells (spermatogonia, primary and secondary spermatocytes, spermatids, and spermatozoa) occurring more or less regularly in succession toward the centre of the follicle. The diameter of the maximum size oocytes is 75mm for A. granosa and 65mm for A. antiquata. Spawning in both A. granosa and A. antiquata is progressing gradually throughout the year as indicated by the availability of various stages of oogonia and spermatogonia; for which the highest number of oogonia were those of 25-40mm diameter. The histological study indicated that both species are iteroparous with planktotrophic type of development, yet performing a short period of pelagic life (ca 1 month).
Co-Authors . Sumarno Abdul Ghofar Adam Putrarama Suyatno Adriyani Samad Agus Sabdono Ahnan, Muhammad Firhan Maftuh Aji, Fajar Bayu Ali Djunaedi Anggieta, Yayank Dita Anhar Solichin Arif Rahman Arya Ksatria Fernanda Hendrawan Aryansyah, Akbar Atami, Sekar Putri Azis Nur Bambang Bambang Sulardiono Bob Suroso Chiesa, Francesco Te David Nugroho Diah Ayuningrum, Diah Dian Ayu Sapta Nur Utami Dicky Harwanto Djoko Suprapto Fadya Rachmi Puteri Fahmy Barik Farizan Adiya Pratama, Farizan Adiya Febrianto, Sigit Haeruddin Haeruddin Haque, Maharani Zahiratun Helfiana Tiuriska Perangin-angin Heni Susiati Indro Sumantri Indro Sumantri Irwani Irwani Iswanto, M. Fajar Fajar Johannes Hutabarat Khasani, Andro Kholilah, Nenik Lulu Adilla Latifah, Lulu Adilla Lusiana Rahayu Widiastuti Martha Wahyuningrum Mauritz L. Tobing Max Rudolf Muskananfola Max Rudolf Muskananfola Max Rudolf Muskananfola Megawati Arsita Putri Misbakul Munir Muhammad Arkan Zaky Rahman Mulkan Nuzapril Niniek Widyorini Novrizal Soni Riswandha, Novrizal Soni Nur Rochman Nurhuda, Izza Siti nurul latifah Ocky Karna Radjasa Oktavianto Eko Jati Prakoso, Teguh Budi Prijadi Soedarsono Pujiono Wahyu Purnomo Pujiono Wahyu Purnomo Pujiono Wahyu Purnomo, Pujiono Wahyu Purnami, Adelia Puspita, Like Viantika Jala Putra, Muchamad Iqbal Widiansyah Rachmawan, Dicky Setya Rahma, Dwi Aprilia Rahmawati, Laily Agustina Ramadhan, Faishal Retno Hartati Ria Purnama Dewi Sa’diyah, Halimatus Santi, Denita Irma Savitri Taurusiana Setiani, Heny Simangunsong, Erica Siti Rudiyanti Subagiyo Subagiyo Sumarno Sumarno Suradi Wijaya Saputra Surya Dwi Vrananta Sutrisno Anggoro Thomas Triadi Putranto, Thomas Triadi Tonny Bachtiar Ulfah Rismawati, Ulfah Yarianto Sugeng Budi Susilo Yuliana, Eka Yulfa