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dc.contributor.authorOskars, Trond Roger
dc.date.accessioned2019-05-02T10:05:40Z
dc.date.available2019-05-02T10:05:40Z
dc.date.issued2019-04-01
dc.identifier.isbn978-82-308-3517-3
dc.identifier.urihttps://hdl.handle.net/1956/19441
dc.description.abstractThe family Haminoeidae consist of herbivorous snails found worldwide in tropical to temperate shallow waters on reefs, seagrass beds, rocky shores and mangroves. The family is the most diverse within the Order Cephalaspidea, but it has been plagued by systematic and taxonomic confusion due to many species and genera being vaguely defined only on shell or inconsistently on a few anatomical features. In this thesis I aim to resolve the taxonomy and systematics of the family and genera based on an integrative approach using a combination of molecular phylogenetic analyses using the mitochondrial genes cytochrome c oxidase subunit I, 12S rRNA, 16S rRNA, and the nuclear genes 18S rRNA, 28S rRNA, and Histone 3 coupled with morpho-anatomical data, the latter resulting from a revision of anatomical characters based in literature and dedicated anatomical dissections. Several of the traditional Haminoeidae genera were synonymized (Austrocylichna, Limulatys, Micraenigma, Nipponatys, Tepidatys) resurrected (Haloa, Haminella, Lamprohaminoea, Roxaniella, Weinkauffia) or showed to not belong in the family (Cylichnium, Hamineobulla, Micratys, Mimiatys, Mnestia, Osorattis, Roxania, Spissitydeus). The results showed that the family is composed of 17 genera including the new genus here described Vellicolla and the informal clade “Minihaminoeids”. Further, the type genus Haminoea was shown to be non-monophyletic, with three main radiations, namely Haminoea (Atlantic + eastern Pacific), Haloa sensu lato (Indo-West Pacific), and Smaragdinella. A comprehensive study of Haloa s. l. based on an expanded taxon sampling including representatives from putatively all species demonstrated that this clade consist of four clades warranting generic status with unique ecological, biogeographic, and morphological features, namely Haloa sensu stricto (13 species with dull colours distributed across the Indo-West Pacific), Lamprohaminoea (5 species with bright colours distributed across the Indo-West Pacific), and the two new genera here described Bakawan (4 species restricted to mangrove habitats) and Papawera (2 species restricted to temperate waters of Australasia). Systematic revisions were conducted for the four genera and 7 new species were found and described (Haloa [2], Lamprohaminoea [3], Bakawan [2]).en_US
dc.language.isoengeng
dc.publisherThe University of Bergeneng
dc.relation.haspartPaper I: Oskars, T. R., Mifsud, C. and Malaquias, M. A. E. (2017). Redescription of the Cephalaspidea gastropod Atys jeffreysi (Weinkauff, 1866) (Haminoeidae), with a discussion on the phylogenetic affinities of the Mediterranean species of the genus. Journal of Natural History, 51(27–28): 1593–1608. Full text not available in BORA due to publisher restrictions. The article is available at: <a href="https://doi.org/10.1080/00222933.2017.1340526" target="blank">https://doi.org/10.1080/00222933.2017.1340526</a>eng
dc.relation.haspartPaper II: Bharate, M., Oskars, T. R., Apte, D. and Malaquias, M. A. E. (2018). Diniatys callosa (Preston, 1908), new combination name for Haminoea callosa from the Andaman Islands (India) Journal of Conchology, 43(2): 213–215. Full text not available in BORA.eng
dc.relation.haspartPaper III: Oskars T. R., Too C. C., Rees D., Mikkelsen P. M., Willassen E., and Malaquias M. A. E. (2018). A molecular phylogeny of the gastropod family Haminoeidae sensu lato (Heterobranchia: Cephalaspidea)—a generic revision. Invertebrate Systematics, 33(2):426-472. Full text not available in BORA due to publisher restrictions. The article is available at: <a href="https://doi.org/10.1071/IS18051" target="blank">https://doi.org/10.1071/IS18051</a>eng
dc.relation.haspartPaper IV: Bharate, M., Oskars, T. R., Narayana, G., Ravinesh, R., Kumar A. B., and Malaquias, M. A. E. (2018). Description of a new species of Haminoea (Gastropoda, Cephalaspidea) from India, with an account on the diversity of the genus in the region. Journal of Natural History, 52(37–38): 2437–2456. Full text not available in BORA due to publisher restrictions. The article is available at: <a href="https://doi.org/10.1080/00222933.2018.1533598" target="blank">https://doi.org/10.1080/00222933.2018.1533598</a>eng
dc.relation.haspartPaper V: Aslam, S., Oskars, T. R., Siddiqui, G. and Malaquias, M. A. E. Beyond shells: First detailed morphological description of the mangrove-associated gastropod Haminoea fusca (A. Adams, 1850) (Cephalaspidea: Haminoeidae), with a COI phylogenetic analysis. Full text not available in BORA.eng
dc.relation.haspartPaper IV: Oskars, T. R., and Malaquias, M.A.E. A molecular phylogeny of the Indo-West Pacific gastropods Haloa sensu lato (Cephalaspidea: Haminoeidae): Tethyan vicariance, higher generic diversity, and ecological specialization. Full text not available in BORA.eng
dc.relation.haspartPaper VII. Oskars, T. R., and Malaquias, M.A.E. Systematic revision of the Indo-West Pacific colourful snails of the genus Lamprohaminoea Lin, 1997 (Cephalaspidea: Haminoeidae). Full text not available in BORA.eng
dc.relation.haspartPaper VIII. Oskars, T. R., and Malaquias, M.A.E. Systematic revision of the Indo-West Pacific mangrove-associated snails of the genus Bakawan Oskars and Malaquias, submitted (Cephalaspidea: Haminoeidae). Full text not available in BORA.eng
dc.relation.haspartPaper IX. Oskars, T. R., and Malaquias, M.A.E. The temperate Australasian genus Papawera Oskars and Malaquias, submitted (Cephalaspidea: Haminoeidae): redescription of P. zelandiae and P. maugeansis. Full text not available in BORA.eng
dc.relation.haspartPaper X: Oskars, T. R., and Malaquias, M.A.E. Systematic revision of the Indo-West Pacific bubble-snails of the genus Haloa Pilsbry, 1921 (Cephalaspidea: Haminoeidae). Full text not available in BORA.eng
dc.titleThe systematics and phylogeny of Haminoeidae (Mollusca, Cephalaspidea), with special focus on the taxonomy and phylogeny of the genus Haloa sensu latoeng
dc.typeDoctoral thesisen_US
dc.rights.holderCopyright the author. All rights reservedeng
dc.identifier.cristin1690292


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