Your SlideShare is downloading. ×
  • Like
Spermatogenesis fish 07
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply

Spermatogenesis fish 07

  • 601 views
Published

fisiologi ikan

fisiologi ikan

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
601
On SlideShare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
42
Comments
0
Likes
2

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. SPERMATOGENESIS PADA IKAN
  • 2.  Def : Proses pembentukan sperma (spermatogonia) Meiosis spermatogenesis spermiogenesis dan spermiasi
  • 3. TESTIS TERDIRI :tubulla longitudinalis (cyste seminiferusmengandung sel-sel spermatogenik yangberdiferensiasi sinkronidikelilingi sel Sertoli / sel Nutrient).
  • 4. Testicular HistologyScanning Electron Micrograph Seminiferous Tubules Light Micrograph Interstial Tissue
  • 5. SEL SERTOLI (SEL NUTRIENT) Ciri-ciri : Bentuk pyramidal panjang bertautan Melekat lamina basalis Ujung sel menjorok ke dalam lumen tubulus / lobulus Fungsi : Penyokong, pelindung dan mengatur nutrisi sel-sel spermatogenik Fagositosis (produk berlebih)  resorbsi lisosom sel Sertoli Sekeresi cairan
  • 6. Sel Leydig (sel Interstitial) Ciri-ciri : Muncul setelah dewasa Bentuk bulat / poligonal Mempunyai inti di tengah Sitoplasma eosinofil Fungsi : Mensekresi hormone testosterone (meiosis dan maturasi). Mengatur perkembangan kelamin sekunder (dimorfisme dan dikromatisme).
  • 7. SPERMATOGENESIS- Proliferasi- Tumbuh Spermatogenesis- Mature- Trasnformasi = Spermiogenesis Metamorfosa
  • 8. Cytological differentiation of spermatogenesis
  • 9. SPERMATOGONIA MITOSIS Spermatosit primer (4n)  spermtosit sekunder (2n)  spermatid (n)  spermatozoa  milt oleh vas deferens  air
  • 10. Spermatogonium Spermatid : SpermatogenesisSpermatid  Spermatozoa : Spermiogenesis - aparatus golgi  Akrosom - inti  kepala spermatozoa - sentriol  ekor spermatozoa - plasma membran selubung tubuh - mitokondria  berkumpul di ekorSpermatogonium - dekat lamina basalis, besar bervariasi - inti bulat lonjong, + butir-butir kromatin - nukleoli dekat selaput inti - sitoplasma granuler, < jelas - HE = inti bulat, biru (kadang-kadang mitosis)
  • 11. Spermatosit Primer - Produk akhir spermatogonium B - inti paling besar, sentral - interfase = (+) butir-butir kromatin halus dan rataSpermatosit Sekunder - produk meiosis I - sel tampak bulat ~ spermatogonium - inti bulat, sentral - interfase = Inti seperti Spermatosit primer dengan spermatid muda
  • 12. Spermatid - produk meiosis II - hampir berbatasan dengan lumen tubulus seminiferus - inti eksentris, lonjong - berkelompok 4 – 8 - daerah golgi dekat inti, berbatas tidak jelas - mitokondria (butir-butir >>) dalam membran sitoplasmaSpermatozoa Tubulus seminiferus  berkala  dewasa kelamin - mamalia = 50 – 60  - kepala leher ekor = - pangkal - tengah - ujung
  • 13. SpermatogoniumLOBULAR LUMEN Spermatocyte SpermatidSel Sertoli Sperma Sperm Duct LOBULAR TUBULAR
  • 14. 9. mature spermatozoa 7. 2nd spermatocytes 6. 1st spermatocytes 8. spermatids11. blood vessel 10. Leydig 4. 5. spermatogonium 2 & 3 spermatogonium 1. stem cell Figure 6. Seminiferous tubule, transverse section
  • 15. FIG. 1. Chinook salmon testes showing stages of germ cell developmentBar =20 µm primary A spermatogonia transitional spermatogonia late B spermatogoniaprimary spermatocytes secondary spermatocytes spermatids (arrow) and spermatozoa (arrowhead)
  • 16. Spermatogonia
  • 17. Spermatogonia
  • 18. Intermediate spermatocytes
  • 19. Mature spermatazoa
  • 20. Spermatozoa tails
  • 21. Spermatozoa heads
  • 22. SEM of fish sperm
  • 23. SPERM COMPARISON NOTE THE 5 MICRON SIZE.Remember 1000 microns = 1 mm, 25 mm = 1 inch
  • 24. SPERM MOTILITYThe sperm moves by rotating its tail in a spiral motion through the water. This induces waves of force backward propelling the sperm forward. If the sperm hits a hard surface, like an egg, the spiral motion will cause the entire sperm to rotate.
  • 25. SPERM MOTILITYThe sperm moves by rotating its tail in a spiral motion through the water. This induces waves of force backward propelling the sperm forward. If the sperm hits a hard surface, like an egg, the spiral motion will cause the entire sperm to rotate.
  • 26. Sperma bergerak : Air laut  media bersifat hipertonik Air tawar  media bersifat hipotonik Sperma aktif bergerak dalam air : 30-60’ (hilang setelah 5”). Sperma ikan teleostei : (-) akrosom  mikrofil (fertilisasi 45 – 60’).