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Hawaiian Honeycreeper Phylogeny The po'ouli ( Melamprosops phaeosoma ) was discovered in 1973 by a group of students from the University of Hawaii. Its membership in the Hawaiian honeycreeper clade had been controversial, mainly because its appearance and behavior are so different from other living honeycreepers. It particularly lacked the "old tent" odor characteristic of other honeycreepers. In 2011, Heather Lerner and her colleagues deciphered phylogeny of the 19 Hawaiian honeycreepers that were not yet officially declared to be extinct at the time, including the po'ouli. The researchers sequenced mitochondrial and nuclear DNA samples taken from the honeycreepers, and also from 28 other birds (outgroups). Phylogenetic analysis of these data firmly establishes the po'ouli as a member of the clade, and also reveals the Eurasian rosefinch as the clade's closest relative ( FIGURE 18.10 ). FIGURE 18.10 Phylogeny of Hawaiian honeycreepers. This cladogram was constructed using sequence comparisons of mitochondrial DNA (whole genome), and 13 nuclear DNA loci of 19 Hawaiian honeycreepers and 28 other finch species. Which species is more closely related to the Palila ( Loxioides bailleui ): the Tiwi ( Vestiaria coccinea ) or the Maui 'Alauahio ( Paroreomyza montana )?

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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 18, Problem 4DAA
Textbook Problem
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Hawaiian Honeycreeper Phylogeny The po'ouli (Melamprosops phaeosoma) was discovered in 1973 by a group of students from the University of Hawaii. Its membership in the Hawaiian honeycreeper clade had been controversial, mainly because its appearance and behavior are so different from other living honeycreepers. It particularly lacked the "old tent" odor characteristic of other honeycreepers.

In 2011, Heather Lerner and her colleagues deciphered phylogeny of the 19 Hawaiian honeycreepers that were not yet officially declared to be extinct at the time, including the po'ouli. The researchers sequenced mitochondrial and nuclear DNA samples taken from the honeycreepers, and also from 28 other birds (outgroups). Phylogenetic analysis of these data firmly establishes the po'ouli as a member of the clade, and also reveals the Eurasian rosefinch as the clade's closest relative (FIGURE 18.10).

Chapter 18, Problem 4DAA, Hawaiian Honeycreeper Phylogeny The po'ouli (Melamprosops phaeosoma) was discovered in 1973 by a

FIGURE 18.10 Phylogeny of Hawaiian honeycreepers. This cladogram was constructed using sequence comparisons of mitochondrial DNA (whole genome), and 13 nuclear DNA loci of 19 Hawaiian honeycreepers and 28 other finch species.

Which species is more closely related to the Palila (Loxioides bailleui): the Tiwi (Vestiaria coccinea) or the Maui 'Alauahio (Paroreomyza montana)?

Summary Introduction

To determine: The species that is more closely related to the Palila (Loxioides bailleui), the Tiwi (Vestiaria coccinea), or the Maui ‘Alauahio (Paroreomyza montana).

Concept introduction: Cladogram is a diagram that represents the hypothetical relationship between different groups of animals known as phylogeny. It is used to visualize the similarities and commonly shared characters of different groups of animals. A group of animals whose members possess one or more derived characters is called as a clade. It contains many lines, indicating different lineages, which then divide into two sister groups at the nodal region. Each node represents a common ancestor.

Explanation of Solution

As given in the problem statement, the researchers deciphered phylogeny of 19 Hawaiian honeycreepers. They sequenced mitochondrial and nuclear DNA samples from the honeycreepers and 28 other birds (outgroups). Refer Fig. 18.10, “Phylogeny of Hawaiian honeycreepers”, in the textbook. The cladogram was made using the comparison of mitochondrial DNA (whole genome) and 13 nuclear DNA loci of 19 Hawaiian honeycreepers and 29 other finch species.

A cladogram represents how a group of animals are related to each other. It contains many lines that indicate different species which then divide into two sister groups at the nodal region...

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