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Morphological study of the dove spleen.

T Nasu1, K Shimizu, M Nakai

  • 1Department of Veterinary Anatomy, Faculty of Agriculture, Miyazaki University, Japan.

Poultry Science
|September 1, 1992
PubMed
Summary

The dove spleen

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Area of Science:

  • Avian biology
  • Comparative anatomy
  • Vascular histology

Background:

  • The spleen's histological structure and microcirculation are crucial for immune function.
  • Understanding avian splenic architecture aids in comparative studies.

Purpose of the Study:

  • To investigate the histological structure of the dove spleen.
  • To elucidate the mode of splenic blood microcirculation in doves.

Main Methods:

  • Observation of spleen and vascular resin casts from doves using light and scanning electron microscopy.

Main Results:

  • Poorly developed splenic trabeculae in doves, with indistinguishable white and red pulps.
  • Sinus luminal surfaces lined by continuous endothelial cells with nuclear protrusions.
  • Blood cells traversed sinuses through small gaps in endothelial lining.
  • Irregular resin masses indicated connections between terminal arteries and venous sinuses, but direct arterial-sinus connections were not identified.
  • Retrograde resin injection revealed blind-ending sinuses.

Conclusions:

  • The dove spleen exhibits a unique microcirculatory pattern distinct from mammals.
  • The observed structure suggests a specific pathway for blood cell passage through the splenic sinuses.

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