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Oskars TR, Malaquias MAE. Systematic revision of the Indo-West Pacific bubble-snails of the genus. INVERTEBR SYST 2022. [DOI: 10.1071/is21011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The genus Haloa includes dull-coloured species of haminoeid snails inhabiting tidal and shallow waters of the tropical and sub-tropical Indo-West Pacific. This paper reports on the diversity and systematics of Haloa based on the phylogenetic hypothesis generated by Oskars and Malaquias (2019) and on the morphological study of specimens. Shells, external features and anatomical characters from the jaws, radula, gizzard plates and male reproductive system were studied by optical and scanning electron microscopy. The molecular species delimitation method Automatic Barcode Gap Discovery, using DNA sequences of the cytochrome c oxidase subunit I gene, was implemented to aid delimiting candidate species. Thirteen species were recognised as valid, including two new to science, namely Haloa cobbi, sp. nov. and Haloa eora, sp. nov., and one unnamed species herein referred to as Haloa sp. 1. Species depict intraspecific variability in their colouration and little character displacement in their anatomy. Shells are of limited taxonomic use; only details of the male reproductive system (e.g. fundus) and the DNA were truly diagnostic. Three species have an Indo-West Pacific distribution and three are restricted to the Indian Ocean. The remaining seven species occur in the Western and Central Pacific Ocean, three of them having geographical ranges restricted to offshore islands.
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Oskars TR, Malaquias MAE. The temperate Australasian genus Papawera Oskars and Malaquias, 2019 (Gastropoda: Cephalaspidea: Haminoeidae), with a redescription of P. zelandiae and P. maugeansis. J NAT HIST 2020. [DOI: 10.1080/00222933.2020.1791996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Trond R. Oskars
- Section of Taxonomy and Evolution, Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway
- Department of Environmental Protection, Fylkesmannen I Møre Og Romsdal (County Governor’s Office), Molde, Norway
| | - Manuel António E. Malaquias
- Section of Taxonomy and Evolution, Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway
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Oskars TR, Malaquias MAE. Systematic revision of the Indo-West Pacific colourful bubble-snails of the genus Lamprohaminoea Habe, 1952 (Cephalaspidea : Haminoeidae). INVERTEBR SYST 2020. [DOI: 10.1071/is20026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The genus Lamprohaminoea includes species of colourful haminoeid snails associated with coral reefs and rocky shores in the tropical Indo-West Pacific. In this work, we revise the diversity and systematics of Lamprohaminoea species based on a phylogenetic hypothesis and on a detailed morphological analysis of specimens. Shells, external features of the animals and anatomical characters from the jaws, radula, gizzard plates, and male reproductive system were studied by optical and scanning electron microscopy. Additionally, a molecular species delimitation analysis based on the Automatic Barcode Gap Discovery method using DNA sequences of the cytochrome c oxidase subunit I was implemented. Five species were recognised, three of them new to science, namely L. cymbalum, L. ovalis, L. vamiziensis sp. nov., L. evelinae sp. nov., and L. mikkelsenae sp. nov. Morphologically, these species can be separated by subtle differences of their external colouration and by features of the male reproductive system. Lamprohaminoea vamiziensis sp. nov. is known only from the western Indian Ocean and L. evelinae sp. nov., from the west Pacific, whereas the other three occur across the Indo-West Pacific realm.
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Oskars TR, Malaquias MAE. A molecular phylogeny of the Indo-West Pacific species of Haloa sensu lato gastropods (Cephalaspidea: Haminoeidae): Tethyan vicariance, generic diversity, and ecological specialization. Mol Phylogenet Evol 2019; 139:106557. [DOI: 10.1016/j.ympev.2019.106557] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 03/23/2019] [Accepted: 07/05/2019] [Indexed: 12/11/2022]
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Aslam S, Oskars TR, Siddiqui G, Malaquias MAE. Beyond shells: first detailed morphological description of the mangrove-associated gastropod Haminoea cf. fusca (A. Adams, 1850) (Cephalaspidea, Haminoeidae), with a COI phylogenetic analysis. ZOOSYSTEMA 2019. [DOI: 10.5252/zoosystema2019v41a16] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sadar Aslam
- Centre of Excellence in Marine Biology, University of Karachi, Karachi-75270 (Pakistan)
| | - Trond R. Oskars
- Section of Taxonomy and Evolution, Department of Natural History, University Museum of Bergen, University of Bergen, PB7800, N-5020 Bergen (Norway)
| | - Ghazala Siddiqui
- Centre of Excellence in Marine Biology, University of Karachi, Karachi N75270 (Pakistan)
| | - Manuel António E. Malaquias
- Section of Taxonomy and Evolution, Department of Natural History, University Museum of Bergen, University of Bergen, PB7800, N-5020 Bergen (Norway)
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Oskars TR, Too CC, Rees D, Mikkelsen PM, Willassen E, Malaquias MAE. A molecular phylogeny of the gastropod family Haminoeidae sensu lato (Heterobranchia: Cephalaspidea): a generic revision. INVERTEBR SYST 2019. [DOI: 10.1071/is18051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Haminoeidae is the most diverse family of Cephalaspidea with 13 to 17 genera commonly recognised as valid and with 46 genera that historically have been moved back and forth between Haminoeidae and other families. Due to poor definition of most genera the family is plagued by extensive taxonomic confusion and its generic composition and internal relationships remain uncertain. In this work we have integrated the study of type material, original descriptions, shells, morpho-anatomical data, and molecular phylogenetics (Bayesian, maximum likelihood, and maximum parsimony) based on five genetic markers (the mitochondrial genes cytochrome c oxidase subunit I and 16SrRNA and the nuclear genes 18SrRNA, 28SrRNA, and histoneH3) to delimit the valid genera, define synapomorphic traits, and establish synonym lists. Three hundred and ninety novel sequences were generated. In total 14 genera were recognised; one genus (Vellicolla gen. nov.) is here described as new and an additional fifteenth group was identified, but no species could be formally ascribed to it and therefore remains unnamed (here designated informally as mini-haminoeids). The relationships of genera are discussed and seven deep clades have been identified but are not formally named because of lack of recognisable synapomorphies for several of them. A new classification for Haminoeidae is proposed including 14 valid genera and one informal group.
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Bharate M, Oskars TR, Narayana S, Ravinesh R, Kumar AB, Malaquias MAE. Description of a new species of Haminoea (Gastropoda: Cephalaspidea) from India, with an account of the diversity of the genus in the Indo-West Pacific. J NAT HIST 2018. [DOI: 10.1080/00222933.2018.1533598] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Monisha Bharate
- Bombay Natural History Society, Hornbill House, Mumbai, India
| | - Trond R. Oskars
- Section of Taxonomy and Evolution, Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway
| | | | - Raveendhiran Ravinesh
- Department of Aquatic Biology & Fisheries, University of Kerala, Thiruvananthapuram, India
| | | | - Manuel António E. Malaquias
- Section of Taxonomy and Evolution, Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway
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Malaquias MAE, Ohnheiser LT, Oskars TR, Willassen E. Diversity and systematics of philinid snails (Gastropoda: Cephalaspidea) in West Africa with remarks on the biogeography of the region. Zool J Linn Soc 2016. [DOI: 10.1111/zoj.12478] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Manuel António E. Malaquias
- Phylogenetic Systematics and Evolution Research Group; Section of Taxonomy and Evolution; Department of Natural History; University Museum of Bergen; University of Bergen; PB 7800 5020 Bergen Norway
| | - Lena T. Ohnheiser
- Phylogenetic Systematics and Evolution Research Group; Section of Taxonomy and Evolution; Department of Natural History; University Museum of Bergen; University of Bergen; PB 7800 5020 Bergen Norway
| | - Trond R. Oskars
- Phylogenetic Systematics and Evolution Research Group; Section of Taxonomy and Evolution; Department of Natural History; University Museum of Bergen; University of Bergen; PB 7800 5020 Bergen Norway
| | - Endre Willassen
- Phylogenetic Systematics and Evolution Research Group; Section of Taxonomy and Evolution; Department of Natural History; University Museum of Bergen; University of Bergen; PB 7800 5020 Bergen Norway
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Oskars TR, Bouchet P, Malaquias MAE. A new phylogeny of the Cephalaspidea (Gastropoda: Heterobranchia) based on expanded taxon sampling and gene markers. Mol Phylogenet Evol 2015; 89:130-50. [DOI: 10.1016/j.ympev.2015.04.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 03/14/2015] [Accepted: 04/08/2015] [Indexed: 11/28/2022]
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