| Summary: | We analyzed Baltic Corynosoma material ( C. magdaleni Montreuil, 1958, C. semerme (Forssell, 1904) Lühe, 1911 and C. strumosum (Rudolphi, 1802) Lühe, 1904) from grey ( Halichoerus grypus ) and ringed seals ( Pusa hispida ) for the variation of hook morphology and for finding possible morphotypes, by using the proboscis profiler (Wayland 2010) and Meristogram (Wayland 2016). Table 1 Material studied with the Proboscis Profiler (M= male). Figure 1 Proboscis profiles of male Corynosoma magdaleni and C. semerme . a . Length. b. Base. Proboscis profiles generated using a moving average interval of 20%. Profile labels are comprised of three parts: species, surface of proboscis (dorsal, lateral or ventral) and a numerical identifier for the acanthocephalan specimen. N.B. profiles for C. magdaleni (dorsal and ventral) are from a single specimen. Figure 2 Result of the principal component analysis of the proboscis profiles of male Corynosoma magdaleni and C. semerme . Figure 3 Meristogram for Corynosoma semerme . Graph shows serial variation in four hook morphometrics: L: length; B: base width; A: area; R: ratio. Meristogram generated with a moving average interval of 20%, using data from two females and eight males. Supplementary Material 1 Row data of the measurements of the Baltic Corynosoma semerme Proboscis Profiler. Supplementary Material 2 Row data of the measurements of the Baltic Corynosoma magdaleni Proboscis Profiler. Notation used for the accession number in both supplementary materials: species (s for semerme , m for magdaleni ) - sex - surface of proboscis (d=dorsal, v=ventral, l=lateral) - host (g=grey, r=ringed) - specimen number For example, s-m-d-g-1 denotes a dorsal row of hooks from a male specimen of Corynosoma semerme which was collected from a grey seal and given the ID "1" References Aznar FJ, Bush AO, Fernández M, Raga JA (1999) Constructional morphology and mode of attachment of the trunk of Corynosoma cetaceum (Acanthocephala: Polymorphidae). Journal of Morphology 241: 237-249. ...
|
|---|