A population genetics study of Pale-winged Starlings, Onychognathus nabouroup, using novel microsatellite markers
- Munshi, Naadhira, Symes, Craig, Maayer, Pieter de, Craig, Adrian J F K, Henry, Laurence, Hausberger, Martine, Mollett, Jean
- Authors: Munshi, Naadhira , Symes, Craig , Maayer, Pieter de , Craig, Adrian J F K , Henry, Laurence , Hausberger, Martine , Mollett, Jean
- Date: 2021
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448718 , vital:74754 , https://www.ajol.info/index.php/scopus/article/view/211291
- Description: Recent research into starling species has revealed the existence of vocal social markers and a link between song temporal structuring and social organisation. The aim of the present study was to develop a genetic tool for understanding the population structuring and behaviour (social/parental transmission) and mating in Pale-winged Starlings (Onychognathus nabouroup), a songbird which is found in arid areas of southern Africa. Using next-generation sequencing, microsatellite markers comprising six dinucleotides, eighteen trinucleotides and twenty-four tetra-nucleotides specific to the Pale-winged Starling were isolated and developed. A total of 77 birds were sampled from the Augrabies Falls Nature Reserve in South Africa (n= 53) and the Ai Ais-Richtersveld Transfrontier Park resort in Namibia (n= 24), respectively. Fifteen polymorphic microsatellite markers were genotyped. The statistical programme STRUCTURE revealed four different genetic clusters within the two populations.
- Full Text:
- Date Issued: 2021
- Authors: Munshi, Naadhira , Symes, Craig , Maayer, Pieter de , Craig, Adrian J F K , Henry, Laurence , Hausberger, Martine , Mollett, Jean
- Date: 2021
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448718 , vital:74754 , https://www.ajol.info/index.php/scopus/article/view/211291
- Description: Recent research into starling species has revealed the existence of vocal social markers and a link between song temporal structuring and social organisation. The aim of the present study was to develop a genetic tool for understanding the population structuring and behaviour (social/parental transmission) and mating in Pale-winged Starlings (Onychognathus nabouroup), a songbird which is found in arid areas of southern Africa. Using next-generation sequencing, microsatellite markers comprising six dinucleotides, eighteen trinucleotides and twenty-four tetra-nucleotides specific to the Pale-winged Starling were isolated and developed. A total of 77 birds were sampled from the Augrabies Falls Nature Reserve in South Africa (n= 53) and the Ai Ais-Richtersveld Transfrontier Park resort in Namibia (n= 24), respectively. Fifteen polymorphic microsatellite markers were genotyped. The statistical programme STRUCTURE revealed four different genetic clusters within the two populations.
- Full Text:
- Date Issued: 2021
Iris colour changes and behaviour in the Three-streaked Tchagra Tchagra jamesi: an observation from the past
- Authors: Craig, Adrian J F K
- Date: 2021
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/449851 , vital:74857 , https://www.ajol.info/index.php/scopus/article/view/211291
- Description: The African bush-shrikes (Malaconotidae) are one of the bird families in which a significant number of species have a distinctively coloured iris (Craig and Hulley 2004). However, in this review paper we overlooked both the description of the Threestreaked Tchagra Tchagra jamesi in two standard handbooks (Archer and Godman 1961, Pearson 2000), and some published observations by a well-known East African ornithologist, VGL van Someren. Changes in pupil size, or in iris coloration, seem to be close-range signals which are not often obvious to a human spectator—they are presumably directed at conspecific birds who are likely to be less than 1 m away. Some instances have thus been reported by bird-ringers with the bird in the hand (eg, Black-bellied Starling Notopholia corusca, McCulloch 1963, Britton and Britton 1970). However, keen observers and especially photographers may be alert to such subtle changes in appearance.
- Full Text:
- Date Issued: 2021
- Authors: Craig, Adrian J F K
- Date: 2021
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/449851 , vital:74857 , https://www.ajol.info/index.php/scopus/article/view/211291
- Description: The African bush-shrikes (Malaconotidae) are one of the bird families in which a significant number of species have a distinctively coloured iris (Craig and Hulley 2004). However, in this review paper we overlooked both the description of the Threestreaked Tchagra Tchagra jamesi in two standard handbooks (Archer and Godman 1961, Pearson 2000), and some published observations by a well-known East African ornithologist, VGL van Someren. Changes in pupil size, or in iris coloration, seem to be close-range signals which are not often obvious to a human spectator—they are presumably directed at conspecific birds who are likely to be less than 1 m away. Some instances have thus been reported by bird-ringers with the bird in the hand (eg, Black-bellied Starling Notopholia corusca, McCulloch 1963, Britton and Britton 1970). However, keen observers and especially photographers may be alert to such subtle changes in appearance.
- Full Text:
- Date Issued: 2021
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