English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The wide distribution and abundance of Changeable Hawk-eagle  (Nisaetus cirrhatus)  across Southeast Asia has prompted several subspecies, namely  N. c. cirrhatus, N. c. ceylanensis, N. c. andamanensis, N. c. limnaeetus  and  N. c. vanheurni . Despite their declining population trend due to anthropogenic threats such as illegal wildlife trading and deforestation, this species is still categorized as least concern. Therefore, in light of determining the management unit for conservation endeavour, and to reveal their phylogenetic relationships within species, a thorough phylogenetic using  COI  gene as a preliminary research is urgently needed. The main objectives of this study were to obtain  COI  gene sequences of 5 individuals (4 intermediated phase and 1 dark phase) eagles and to construct their phylogenetic tree. The stages of this research were extraction and quantification of DNA blood cells of Changeable Hawk-eagle, amplification of DNA by applying PCR method using  COI  gene specific primers, electrophoresis on 0.8% agarose gel and DNA sequencing by First Base Laboratories, Malaysia. The DNA sequence analysis was carried out using a MEGAX software with Neighbour Joining (NJ) method. Based on  COI  gene sequence,  N. cirrhatus  forming a species complex which was indicated by a monophyletic clade with smaller branches with different bootstrap values in NJ tree. Therefore,  N. cirrhatus  is closely related to  N. phillippensis . In addition to enrich the genetic data of  N. cirrhatus , this paper could be one effort to understand genetic diversity among eagles in the world.

iop conference series. earth and environmental science

Phylogenetic study of Changeable Hawk-eagle (Nisaetus cirrhatus) based on cytochrome-c oxydase subunit I (COI) gene as one of the conservation efforts in genetic diversity