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Thursday, 13 December 2012

Haiwan ovoviviparous

           Murid sering keliru dengan kaedah pembiakan haiwan seperti jerung, kuda laut dan dogfish.  Adakah mereka dari kumpulan haiwan bertelur atau melahirkan anak?  Jawapannya mereka kumpulan haiwan ovoviviparous.  

          Haiwan ovoviviparous merupakan haiwan yang telurnya dipersenyawakan dan berkembang dalam kantung ibu sehingga menetas.  Haiwan ovoviviparous tidak mempunyai tali pusat untuk melampirkan embrio untuk ibu mereka.  Anak haiwan yang bakal ditetaskan mendapat makanan melalui telur kuning yang kaya dengan lemak dan protein.  Berikut adalah contoh beberapa jenis haiwan ovoviviparous: 

Pgymy Seahorse
            

Sumber: http://marinelife.about.com/od/fish/p/Pygmy-Seahorse.htm


Cape dwarf chameleon
                   


Ikan Jerung
          60% daripada ikan jerung adalah haiwan ovoviviparous.  Misalnya: 
          
          Spiny Dogfish

    

          Whale Shark (Rhinocodon typus)
   

          Basking Shark (Cetorhinus maximus)
   

          Thresher Shark
   
Sumber:  http://www.animalport.com/animals/Thresher-Shark.html

         Sawfish
   

          Shortfin Mako Shark (Isurus oxyrinchus)
   

          Tiger Shark (Galeocerdo cuvier)
   


Fire Salamander
                  


Surinam toad
          





Rujukan tambahan: 
http://en.wikipedia.org/wiki/Ovoviviparity
http://marinelife.about.com/od/glossary/g/ovoviviparous.htm
http://www.dof.gov.my/html/themes/moa_dof/documents/Berita_Perikanan/2005/BP_bil_58_2005.pdf
http://www.theanimalfiles.com/glossary/ovoviviparous.html

11 comments:

  1. gambar yang cantik, sesuai untuk aktiviti p&p.

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  2. Wow...the picture of animals is very attracted! the note also very completed! well done!!

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  3. Syabas, blog cikgu sangat cantik. Nota berkaitan contoh-cotoh jenis haiwan ovoviviparous ringkas, padat dan gambar yang menarik sangat sesuai kefahaman muri-murid. Teruskan usaha lagi.

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