"Anatomical light microscopic features of the down feathers of four spe" by Marie-Louise G. Panganiban and Emilia A. Lastica-Ternura
 

Anatomical light microscopic features of the down feathers of four species of cockatoos (Aves: Psittaciformes: Psitacidae)

Issue Date

7-2022

Abstract

Four species of commonly traded cockatoos in the Philippines were studied to document and assess the microscopic anatomy of their down feathers and its potential as a method for identification. The samples were analyzed based on node morphology, pigment location, pigment distribution, barbule length, and barbule width. Cacatua haematuropygia, Cacatua galerita, and Probosciger aterrimus nodes had mixes of expanded, spine, and prong nodes at different degrees throughout, while Cacatua alba consistently exhibited prong nodes throughout the pennulum. Pigment distribution in P. aterrimus was uniform and internodal and the pigment location ranged from prenodal to nodal, increasing in amount towards the distal end of the barb. The widest barbules were from the male C. haematuropygia while the narrowest were from the two female C. haematuropygia and the male C alba. The mean number of nodes per barbule was highest in one female C. haematuropygia while the lowest mean number of nodes per barbule was from P. aterrimus Y. Student's T-test and ANOVA test identified potential sexual dimorphism indicators in the mean number of nodes per barbule for C. galerita and the mean barbule width for C. alba and C. haematuropygia and P. aterrimus.

Source or Periodical Title

Philippine Journal of Veterinary Medicine

ISSN

0031-7705

Volume

59

Issue

2

Page

88-98

Document Type

Article

College

College of Veterinary Medicine (CVM)

Frequency

semi-annually

Physical Description

illustrations; tables

Language

English

En – AGROVOC descriptors

PSITTACIFORMES; PARROTS; BIRDS; FEATHERS; MORPHOLOGY; SEXUAL DIMORPHISM

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