Outline-based Analysis of Sexual Dimorphism in the Shell of the Freshwater Mussel (Margaritifera margaritifera L.)

Paper Details

Research Paper 01/03/2017
Views (552)
current_issue_feature_image
publication_file

Outline-based Analysis of Sexual Dimorphism in the Shell of the Freshwater Mussel (Margaritifera margaritifera L.)

Al-Axel O. Joaquino, Danica P. Piñero, Roldan Echem, Cordulo P. Ascaño, Mark Anthony J. Torres
J. Biodiv. & Environ. Sci. 10(3), 43-49, March 2017.
Copyright Statement: Copyright 2017; The Author(s).
License: CC BY-NC 4.0

Abstract

This study was conducted to determine the patterns of sexual dimorphism in the vulnerable species of freshwater mussel Margaritifera margaritifera L. The method of Elliptic Fourier Analysis (EFA) was employed to extract shape information from a total of one hundred (100) points collected from digitized images of the shells. The EFA coordinates where then subjected to statistical analyses such as Kruskall-Wallis and Discriminant Function (DFA) test. Results showed differences in the shape of the lateral sides along the hinges of the shell contour pallial line, the pseudocardinal tooth area and at the umbo. Aside from revealing information on sexual dimorphism, the result of this study is discussed in relation to using patterns of sex differences in shell shape to assess the health of aquatic habitats.

Adajar AQ, Torres MAJ, Demayo CG. 2011. Sexual dimorphism in the shape of the primary flight feathers of Parakeet-Budgerigar, Melopsittacus undulatus Shaw (1805). Proceedings of the 2011 2ND International Conference on Environmental Science and Technology IPCBEE 6(2), 333-337.

Albutra QB, Torres MAJ, Demayo CG. 2012. Outline and landmark based geometric morphometric analysis in describing sexual dimorphism in wings of the white stem borer (Schirpophaga innotata Walker). Animal Biology and Animal Husbandry International Journal of the Bioflux Society 4(1), 5-13.

Diaz G, Zuccarelli A, Pelligra I, Ghiani A. 1989. Elliptic Fourier analysis of cell and nuclear shapes. Comparative Biomedical Research  22, 405-414.

Ferson S, Rohlf FJ, Koehn RK. 1985. Measuring shape variation of two-dimensional outlines. Systematic Zoology 34, 59- 68.

Goodwin BJ, Fish JD. 1977. Inter- and Intraspecific variation in Littorina obtusata and L. mariae (Gastropoda: Prosobranchia). Journal of Molluscan Studies 43, 241-254.

Hammer Ø, Harper DAT, Ryan PD. 2001. PAST: paleontological statistics software package for education and data analysis. Palaeontologia Electronica 4, 1.

Iwata H, Niikura S, Matsuura S, Takano Y, Ukai Y. 1998. Evaluation of variation of root shape of Japanese radish (Raphanus sativus L.) based on image analysis using elliptic Fourier descriptors. Euphytica 102, 143-149.

Laurie CC, True JR, Liu J, Mercer JM. 1997. An introgression analysis of quantitative trait loci that contribute to a morphological difference between Drosophila simulans and D. mauritiana. Genetics 145, 339-348.

Mollusc Specialist Group. 1996. Margaritiferamargaritifera. The IUCN Red List of Threatened Species 1996: e.T1279913382532.

Rohlf FJ, Archie JW. 1984. A comparison of Fourier methods for the description of wing shape in mosquitoes (Diptera: Culicidae). Systematic Zoology 33, 302-317.

Rohlf FJ. 2008. TPSUtil version 1.38. Department of Ecology and Evolution, State University of New York at Stony Brook, New York.

Rohlf FJ. 2012. TPSDig version 2.12. Department of Ecology and Evolution, State University of New York at Stony Brook, New York.

Rohlf FJ. 2015. The tps series of software. Hystrix, the Italian Journal of Mammalogy 26, 1-4.

Stillwell RC, Fox CW. 2007. Environmental effects on sexual size dimorphism of a seed-feeding beetle. Oecologia 153, 273–280.

White R, Rentice HC, Verwist T. 1988. Automated image acquisition and morphometric description. Canadian Journal of Botany 66, 450-459.

Yoshioka Y, Iwata H, Ohsawaand R, Ninomiya S. 2004. Analysis of petal shape variation of Primulasieboldii by Elliptic Fourier descriptors and principal component analysis. Annals of Botany 94,  657-664.

Zieritz A, Aldridge DC. 2011. Sexual, Habitat-constrained and parasite-induced dimorphism in the shell of a Freshwater Mussel (Anodonta anatine, Unionidae). Journal of Morphology 272, 1365-1375.

Related Articles

Agroforestry in woody-encroached Sub-Saharan savannas: Transforming ecological challenges into sustainable opportunities

Yao Anicet Gervais Kouamé, Pabo Quévin Oula, Kouamé Fulgence Koffi, Ollo Sib, Adama Bakayoko, Karidia Traoré, J. Biodiv. & Environ. Sci. 27(3), 10-22, September 2025.

Extreme rainfall variability and trends in the district of Ouedeme, municipality of Glazoue (Benin)

Koumassi Dègla Hervé, J. Biodiv. & Environ. Sci. 27(3), 1-9, September 2025.

Heterosis breeding, general and specific combining ability and stability studies in pearl millet: Current trends

Ram Avtar, Krishan Pal, Kavita Rani, Rohit Kumar Tiwari, Mahendra Kumar Yadav, J. Biodiv. & Environ. Sci. 27(2), 117-124, August 2025.

Combining ability, heterosis and stability for yield and fibre quality traits in cotton: Breeding approaches and future prospects

Rohit Kumar Tiwari, Krishan Pal, R. P. Saharan, Ram Avtar, Mahendra Kumar Yadav, J. Biodiv. & Environ. Sci. 27(2), 109-116, August 2025.

Bridging the COPD awareness gap in marginalized populations: Findings from a multicentre study in Khalilabad, Sant Kabir Nagar, Uttar Pradesh, India

Anupam Pati Tripathi, Jigyasa Pandey, Sakshi Singh, Smita Pathak, Dinesh Chaudhary, Alfiya Mashii, Farheen Fatima, J. Biodiv. & Environ. Sci. 27(2), 97-108, August 2025.

Antioxidant and anti-inflammatory activity of Pleurotus citrinopileatus Singer and Pleurotus sajor-caju (Fr.) Singer

P. Maheswari, P. Madhanraj, V. Ambikapathy, P. Prakash, A. Panneerselvam, J. Biodiv. & Environ. Sci. 27(2), 90-96, August 2025.

Mangrove abundance, diversity, and productivity in effluent-rich estuarine portion of Butuanon River, Mandaue City, Cebu

John Michael B. Genterolizo, Miguelito A. Ruelan, Laarlyn N. Abalos, Kathleen Kay M. Buendia, J. Biodiv. & Environ. Sci. 27(2), 77-89, August 2025.

Cytogenetic and pathological investigations in maize × teosinte hybrids: Chromosome behaviour, spore identification, and inheritance of maydis leaf blight resistance

Krishan Pal, Ravi Kishan Soni, Devraj, Rohit Kumar Tiwari, Ram Avtar, J. Biodiv. & Environ. Sci. 27(2), 70-76, August 2025.