ONTOGENETIC ALLOMETRY OF BODY SHAPE IN SQUATINA GUGGENHEIM MARINI, 1936 (ELASMOBRANCHII: SQUATINIDAE)
DOI :
https://doi.org/10.5914/tropocean.v52i1.265413Mots-clés :
análise multivariada, cação-anjo, morfometria geométrica ontogeniaRésumé
Species within the genus Squatina are morphologically very similar, and their patterns of body shape variation remain poorly understood. This study analyzed the ontogenetic changes in the body shape of Squatina guggenheim Marini, 1936, using geometric morphometric techniques. Sixteen morphometric measurements were taken using a geometric truss network protocol based on eight anatomical landmarks defined from the external morphology of 30 specimens of S. guggenheim, with total length ranging from 198 to 661 mm. For each specimen, the reconstructed Cartesian coordinates of the anatomical landmarks were aligned using the generalized least squares method, and the multivariate regression of centroid size on shape components was determined. Most of the ontogenetic changes in shape occur along the lateral axis of the body, and can be described mainly by a relative increase in the width of the pectoral fin region, in relation to the head. However, further analyzes with a larger sample size will be necessary to fully elucidate the patterns of growth and shape change during the ontogeny of this species.
Références
Adams, D.C., Rohlf, F.J. and Slice, D.E. (2004), Geometric morphometrics: ten years of progress following the ‘revolution’. Italian Journal of Zoology, Vol. 71, pp. 5-16.
Adams, D.C., Rohlf, F.J. and Slice, D.E. (2013), A field comes of age: geometric morphometrics in the 21st century. Hystrix, Vol. 24, pp. 7-14.
Adams, D.C. and Otárola‐Castillo, E. (2013), geomorph: an R package for the collection and analysis of geometric morphometric shape data. Methods in Ecology and Evolution, Vol. 4, pp. 393-399.
Tropical Oceanography, v. 51, p. 23-33, 2024.
Cavalcanti, Ontogenetic Allometry of Body Shape in Squatina Guggenheim Marini, 1936 (Elasmobranchii: Squatinidae)
Baken, E.K., Collyer, M.L., Kaliontzopoulou, A. and Adams, D.C. (2021), geomorph v4.0 and gmShiny: Enhanced analytics and a new graphical interface for a comprehensive morphometric experience. Methods in Ecology and Evolution, Vol. 12, pp. 2355-2363.
Bookstein, F.L. (1991), Morphometric Tools for Landmark Data. Geometry and Biology. Cambridge, Cambridge University Press, 435p.
Carpenter, K.E., Sommer, H.J., III & Marcus, L.F. (1996), Converting truss interlandmark distances to Cartesian coordinates. In: Marcus, L.F., Corti, M., Loy, A., Naylor, G.J.P. & Slice, D.E. (eds.), Advances in Morphometrics. NATO ASI Series A: Life Sciences, Vol. 284. Plenum Publishing, New York, pp. 103-111.
Compagno, L.J.V. (1984), FAO Species Catalogue. Vol. 4. Sharks of the World. An annotated and illustrated catalogue of shark species known to date. Part 2. Carcharhiniformes. FAO Fish. Synop. (125), Vol. 4, Pt. 2: 251-655.
Compagno, L.J.V. (1990), Alternative life-history styles of cartilaginous fishes in space and time. Environmental Biology of Fishes, Vol. 28, pp. 33-75.
Cousseau, M.B. (1973), Taxonomía y biología del pez angel, Squatina argentina Marini (Pisces, Squatinidae). Physis, Vol. 32, pp. 175-195.
Ellis, J.R., Barker, J., McCully Phillips, S.R., Meyers, E.K. & Heupel, M. (2021). Angel sharks (Squatinidae): A review of biological knowledge and exploitation. Journal of Fish Biology, Vol. 98, No. 3, pp. 592-621.
Figueiredo, J.L. (1977), Manual de Peixes Marinhos do Sudeste do Brasil. I. Introdução. Cações, Raias e Quimeras. São Paulo, Museu de Zoologia da Universidade de São Paulo, 104p.
Fouts, W.R. & Nelson, D.R. (1999), Prey capture by the Pacific angel shark, Squatina californica: visually mediated strikes and ambush-site characteristics. Copeia, Vol. 1999, No. 2, pp. 304- 312.
Gallo, V., Cavalcanti, M.J. & Tintori, A. (2002), Using geometric morphometrics to study ontogenetic shape changes in Paralepidotus ornatus (Agassiz, 1833-43) (Actinopterygii, Semionotidae). Arquivos do Museu Nacional, Rio de Janeiro, Vol. 60, no. 3, pp. 117-120.
Garcia, G., Pereyra, S., Gutierrez, V., Oviedo, S., Miller, P., & Domingo, A. (2015). Population structure of Squatina guggenheim (Squatiniformes, Squatinidae) from the south‐western Atlantic Ocean. Journal of Fish Biology, Vol. 86, pp. 186-202.
Loy, A., Cataudella, S. & Corti, M. (1996), Shape changes during the growth of the sea bass, Dicentrarchus labrax (Teleostea: Perciformes), in relation to different rearing conditions. An
Tropical Oceanography, v. 51, p. 23-33, 2024.
Cavalcanti, Ontogenetic Allometry of Body Shape in Squatina Guggenheim Marini, 1936 (Elasmobranchii: Squatinidae)
application of thin-plate spline regression analysis. In: Marcus, L.F., Corti, M., Loy, A., Naylor, G.J.P. & Slice, D.E. (eds.), Advances in Morphometrics. NATO ASI Series A: Life Sciences, Vol. 284. Plenum Publishing, New York, pp. 399-405.
Loy, A., Mariani, L., Bertelletti, M., & Tunesi, L. (1998). Visualizing allometry: geometric morphometrics in the study of shape changes in the early stages of the two‐banded sea bream, Diplodus vulgaris (Perciformes, Sparidae). Journal of Morphology, Vol. 237, No. 2, pp. 137-146.
Morrison, D.F. (1990), Multivariate Statistical Methods. 3rd ed. New York, McGraw-Hill. 495p.
R Core Team. (2023), R: A language and environment for statistical computing. R Foundation for
Statistical Computing, Vienna, Austria. URL: https://www.R-project.org/.
Reis, R.E., Zelditch, M.L. & Fink, W.L. (1998), Ontogenetic allometry of body shape in the
Neotropical catfish Callichthys (Teleostei: Siluriformes). Copeia, Vol. 1998, pp. 177-182.
Rohlf, F.J. (1990), Rotational fit (Procrustes) methods. In: Rohlf, F.J. & Bookstein, F.L. (eds.), Proceedings of the Michigan Morphometrics Workshop. Ann Arbor, The University of Michigan Museum of Zoology, Special Publication No. 2, pp. 227-236.
Rohlf, F.J. & Slice, D.E. (1990), Extensions of the Procrustes method for the optimal superimposition of landmarks. Systematic Zoology, Vol. 39, pp. 40-59.
Rohlf, F.J. and Marcus, L.F. (1993), A revolution in morphometrics. Trends in Ecology and Evolution, Vol. 8, pp. 129-132.
Rohlf, F.J. (1998), On applications of geometric morphometrics to studies of ontogeny and phylogeny. Systematic Biology, Vol. 47, pp. 147-158.
Rohlf, F.J. (2015), The tps series of software. Hystrix, Vol. 26, pp. 9-12.
Sokal, R. R. & Rohlf, F. J. (1995), Biometry: The Principles and Practice of Statistics in Biological
Research. San Francisco, W. H. Freeman, 887p.
Solé-Cava, A.M., Vooren, C.M. & Levy, J.A. (1983), Isozymic differentiation of two sibling species of Squatina (Chondrichthyes) in South Brazil. Comparative Biochemistry and Physiology, Vol. 75B, pp. 355-358.
Solé-Cava, A.M. & Levy, J.A. (1987), Biochemical evidence for a third species of angel shark off the East coast of South America. Biochemical Systematics and Ecology, Vol. 15, pp. 139- 144.
Tropical Oceanography, v. 51, p. 23-33, 2024.
Cavalcanti, Ontogenetic Allometry of Body Shape in Squatina Guggenheim Marini, 1936 (Elasmobranchii: Squatinidae)
Strauss, R.E. & Bookstein, F.L. (1982), The truss: body form reconstruction in morphometrics. Systematic Zoology, Vol. 31, pp. 113-135.
Walker, J.A. (1993), Ontogenetic allometry of three-spine stickleback body form using landmark- based morphometrics. In: Marcus, L.F., Bello, E. & García-Valdecasas, A. (eds.), Contributions to Morphometrics. Museo Nacional de Ciencias Naturales, Madrid, pp. 193-214.
Vaz, D.F.B. & de Carvalho, M.R. (2018). New species of Squatina (Squatiniformes: Squatinidae) from Brazil, with comments on the taxonomy of angel sharks from the Central and Northwestern Atlantic. Copeia, Vol. 106, No. 1, pp. 144-160.
Vooren, C.M. & Silva, K.G. (1991), On the taxonomy of the angel sharks from Southern Brazil, with the description of Squatina occulta sp. n. Revista Brasileira de Biologia, Vol. 51, pp. 589-602.
Zelditch, M.L. & Fink, W.L. (1995), Allometry and developmental integration of body growth in a piranha, Pygocentrus nattereri (Teleostei, Ostariophysi). Journal of Morphology, Vol. 223, pp. 341-335.
