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Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)

We monitored total testosterone profiles and song patterns of 12 males and 2 females Red-whiskered Bulbuls (Pycnonotus jocosus), aged 5-10 months. Each bird was maintained in a cage sized of 38 × 38 × 50 cm and raised in a 22 °C-controlled room-sized of 6 × 10 × 3.5 m. The song prototype was pla...

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Main Authors: Panas Tumkiratiwong,, Darika Manathamkamon,, Rattanawat Chaiyarat,, Kan Khoomsab,
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2021
Online Access:http://journalarticle.ukm.my/17399/1/2.pdf
http://journalarticle.ukm.my/17399/
https://www.ukm.my/jsm/malay_journals/jilid50bil5_2021/KandunganJilid50Bil5_2021.html
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spelling my-ukm.journal.173992021-09-14T02:10:57Z http://journalarticle.ukm.my/17399/ Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758) Panas Tumkiratiwong, Darika Manathamkamon, Rattanawat Chaiyarat, Kan Khoomsab, We monitored total testosterone profiles and song patterns of 12 males and 2 females Red-whiskered Bulbuls (Pycnonotus jocosus), aged 5-10 months. Each bird was maintained in a cage sized of 38 × 38 × 50 cm and raised in a 22 °C-controlled room-sized of 6 × 10 × 3.5 m. The song prototype was played during 0700-11.00 h, with an amplifier-connected loudspeaker placed at the center and the song was recorded during both 1100-1200 and 1300-1500 h, and then their sonograms were analyzed with Avisoft SAS Lab Pro, version 4.3. Feces were collected monthly and immediately following recording their songs to determine male and female total testosterone levels by radioimmunoassay. The results demonstrated that an average of a frequency that the male and the female birds produced was 4.27 ± 0.13 kHz with a frequency range of 1.50 - 5.18 kHz. The males aged 8-10 months old produced songs with an average of 25.83 syllables/10 s, similar to those found in the song prototype while the females produced those with an average of 18.33 syllables/10 s. The males produced songs consisting of more syllables and fewer intervals than those of the females. The coefficient of correlations between the mean total testosterone levels with the syllables/10 s and intervals/10 s were +0.68 and -0.69, respectively. Additionally, the male Red-whiskered Bulbuls created the complicated and various song types that corresponded well with the marked increases in the total testosterone levels at the age of 8 to 10 months old. Penerbit Universiti Kebangsaan Malaysia 2021-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/17399/1/2.pdf Panas Tumkiratiwong, and Darika Manathamkamon, and Rattanawat Chaiyarat, and Kan Khoomsab, (2021) Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758). Sains Malaysiana, 50 (5). pp. 1211-1220. ISSN 0126-6039 https://www.ukm.my/jsm/malay_journals/jilid50bil5_2021/KandunganJilid50Bil5_2021.html
institution Universiti Kebangsaan Malaysia
building Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description We monitored total testosterone profiles and song patterns of 12 males and 2 females Red-whiskered Bulbuls (Pycnonotus jocosus), aged 5-10 months. Each bird was maintained in a cage sized of 38 × 38 × 50 cm and raised in a 22 °C-controlled room-sized of 6 × 10 × 3.5 m. The song prototype was played during 0700-11.00 h, with an amplifier-connected loudspeaker placed at the center and the song was recorded during both 1100-1200 and 1300-1500 h, and then their sonograms were analyzed with Avisoft SAS Lab Pro, version 4.3. Feces were collected monthly and immediately following recording their songs to determine male and female total testosterone levels by radioimmunoassay. The results demonstrated that an average of a frequency that the male and the female birds produced was 4.27 ± 0.13 kHz with a frequency range of 1.50 - 5.18 kHz. The males aged 8-10 months old produced songs with an average of 25.83 syllables/10 s, similar to those found in the song prototype while the females produced those with an average of 18.33 syllables/10 s. The males produced songs consisting of more syllables and fewer intervals than those of the females. The coefficient of correlations between the mean total testosterone levels with the syllables/10 s and intervals/10 s were +0.68 and -0.69, respectively. Additionally, the male Red-whiskered Bulbuls created the complicated and various song types that corresponded well with the marked increases in the total testosterone levels at the age of 8 to 10 months old.
format Article
author Panas Tumkiratiwong,
Darika Manathamkamon,
Rattanawat Chaiyarat,
Kan Khoomsab,
spellingShingle Panas Tumkiratiwong,
Darika Manathamkamon,
Rattanawat Chaiyarat,
Kan Khoomsab,
Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)
author_facet Panas Tumkiratiwong,
Darika Manathamkamon,
Rattanawat Chaiyarat,
Kan Khoomsab,
author_sort Panas Tumkiratiwong,
title Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)
title_short Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)
title_full Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)
title_fullStr Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)
title_full_unstemmed Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)
title_sort age-related testosterone changes and corresponding song patterns in red-whiskered bulbul (pycnonotus jocosus linnaeus, 1758)
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2021
url http://journalarticle.ukm.my/17399/1/2.pdf
http://journalarticle.ukm.my/17399/
https://www.ukm.my/jsm/malay_journals/jilid50bil5_2021/KandunganJilid50Bil5_2021.html
_version_ 1712286235570995200
score 13.211869

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