Morphological and morphometrical description of the glochidia of Westralunio carteri Iredale, 1934 (Bivalvia: Unionoida:Hyriidae)

M.W. Klunzinger; S.J. Beatty; D.L. Morgan; G.J. Thomson; A.J. Lymbery

doi:10.1080/13235818.2013.782791

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Morphological and morphometrical description of the glochidia of Westralunio carteri Iredale, 1934 (Bivalvia: Unionoida:Hyriidae)

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Morphological and morphometrical description of the glochidia of Westralunio carteri Iredale, 1934 (Bivalvia: Unionoida:Hyriidae)

M.W. Klunzinger, S.J. Beatty, D.L. Morgan, G.J. Thomson and A.J. Lymbery

Molluscan Research, Vol.33(2), pp.104-109

2013

DOI: https://doi.org/10.1080/13235818.2013.782791

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Abstract

Most freshwater mussel (Bivalvia: Unionoida) larvae (glochidia in Margaritiferidae, Hyriidae and Unionidae) are fish parasites. Knowledge of the larval morphology and the mechanism of release in freshwater mussels is useful in species systematics and ecology. Westralunio carteri Iredale, 1934 is the only unionoid from south-western Australia. Little information is available on its biology and its glochidia have never been described. The aim of this study was to describe the glochidia of W. carteri and method of their release. Glochidia within vitelline membranes were embedded in mucus which extruded from exhalent siphons of females during spring/summer; they then hatched from vitelline membranes but remained tethered by a larval thread and began characteristically ‘winking’. Shells (n = 120) were subtriangular, 308 μm long (±0.83 SE), 251μm high (±0.73 SE) and had a hinge length of 212μm (±0.78 SE). Larval teeth were singular with interlocking cusps and convex or concave basal protuberances on opposing valves.

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Title: Morphological and morphometrical description of the glochidia of Westralunio carteri Iredale, 1934 (Bivalvia: Unionoida:Hyriidae)
Authors/Creators: M.W. Klunzinger (Author/Creator) - Murdoch University
S.J. Beatty (Author/Creator) - Murdoch University
D.L. Morgan (Author/Creator) - Murdoch University
G.J. Thomson (Author/Creator) - Murdoch University
A.J. Lymbery (Author/Creator) - Murdoch University
Publication Details: Molluscan Research, Vol.33(2), pp.104-109
Publisher: Taylor and Francis
Identifiers: 991005540992407891
Copyright: © 2013 The Malacological Society of Australasia and the Society for the Study of Molluscan Diversity
Murdoch Affiliation: Freshwater Fish Group and Fish Health Unit; School of Veterinary and Life Sciences
Language: English
Resource Type: Journal article

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Citation topics: 3 Agriculture, Environment & Ecology; 3.2 Marine Biology; 3.2.1002 Bivalve Ecology
Web Of Science research areas: Marine & Freshwater Biology; Zoology
ESI research areas: Plant & Animal Science