The iridescent enigma: genome evolution and species boundaries of the blue-ringed octopus species complex (Octopodidae: Hapalochlaena)

Whitelaw, Brooke (2021) The iridescent enigma: genome evolution and species boundaries of the blue-ringed octopus species complex (Octopodidae: Hapalochlaena). PhD thesis, James Cook University.

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View at Publisher Website: https://doi.org/10.25903/691j-aa97
 
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Abstract

Brooke Whitelaw examined the evolution of the blue-ringed octopus genus (Octopodidae: Hapalochlaena) species complex. The current state of Hapalochlaena systematics was revealed to be insufficient for the species diversity observed. Furthermore, evolution of the Hapalochlaena genome revealed distinct differences to non-tetrodotoxin (TTX) bearing octopod genomes. This work provides a genetic basis for systematic re-evaluation of the genus, in conjunction with an annotated genome and linkage map for H. maculosa.

Item ID: 75839
Item Type: Thesis (PhD)
Keywords: tetrodotoxin; octopod; Hapalochlaena; toxin; venom; sodium channel; cephalopod genome; comparative genomics; gene family expansions; transposable elements; venom evolution
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Copyright Information: Copyright © 2021 Brooke Whitelaw.
Additional Information:

For this thesis, Brooke Whitelaw received the Dean's Award for Excellence 2022.

Two publications arising from this thesis are stored in ResearchOnline@JCU, at the time of processing. Please see the Related URLs. The publications are:

Chpater 1: Whitelaw, Brooke L., Cooke, Ira R., Finn, Julian, Zenger, Kyall, and Strugnell, J.M. (2019) The evolution and origin of tetrodotoxin acquisition in the blue-ringed octopus (genus Hapalochlaena). Aquatic Toxicology, 206. pp. 114-122.

Chapter 2: Whitelaw, Brooke L., Cooke, Ira R., Finn, Julian, da Fonseca, Rute R., Ritschard, Elena A., Gilbert, M. T. P., Simakov, Oleg, and Strugnell, Jan M. (2020) Adaptive venom evolution and toxicity in octopods is driven by extensive novel gene formation, expansion, and loss. GigaScience, 9 (11). giaa120.

Date Deposited: 25 Aug 2022 01:54
FoR Codes: 31 BIOLOGICAL SCIENCES > 3105 Genetics > 310509 Genomics @ 40%
31 BIOLOGICAL SCIENCES > 3105 Genetics > 310508 Genome structure and regulation @ 30%
31 BIOLOGICAL SCIENCES > 3105 Genetics > 310505 Gene expression (incl. microarray and other genome-wide approaches) @ 30%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280102 Expanding knowledge in the biological sciences @ 50%
18 ENVIRONMENTAL MANAGEMENT > 1805 Marine systems and management > 180504 Marine biodiversity @ 50%
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