Comparación del ritmo de crecimiento de las toninas (Tursiops truncatus) pertenecientes a tres localidades distintas

Arturo Romero Tenorio, Alberto Delgado Estrella

Resumen


 

Introduction: In order to know the growing rate of the captive bottlenose dolphins (Tursiops truncatus) of Via Delphi, the total length and age from three different geographic zone dolphins, from Quintana Roo and Tabasco in Mexico, and some individuals from Cuba (some dolphins were born in captivity) were recorded. The aim of this study was to establish if there were statistic differences between gender and among dolphins from different localities.
Methods: The age of 43 dolphins was determined through the analysis of the growth layers groups (GLG´s), The gender of these dolphins was known, the total length of all of them, and the skull length of 12 toninas. The total sample was composed of 17 males and 26 females.
Results: Of these 43 dolphins, 13 were calves between five years to 10 months old. Sexually mature dolphins from Quintana Roo, three males of 18 years old, presented a total length mean of = 253.33 cm + 14 cm S. D. (range 239-267 cm, n = 3). Females older than 10 years old presented a total length mean of = 250.6 cm + 7.5 cm S. D. (range 239-261 cm, n = 8). From de State of Tabasco, males older than nine years old, had a mean total length = 236.13 cm + 5.2 cm S. D. (range 238-240 cm, n = 4). Females were older than eight years old, their mean total length = 239.4 cm + 7.4 cm S. D. (range 227-246 cm, n = 5). About the Cuban dolphins, The sample from the Cuban dolphins was small (seven dolphins), they compared with dolphins of same sex and age of the two localities.
Discussion: The values of Lmax of bottlenose dolphins in the Southern of the Gulf of Mexico are similar to the bottlenose dolphins in Texas and Florida, no significant statistical differences were found. Differences in growing rates were not found in the Lmax on adult dolphins between localities nor sexes.

  

Palabras clave


Age; bottlenose dolphins; Cuba; Mexico; total length.

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Referencias


Ballance, L. 1990. Residence patterns, group organization, and surfacing association of bottlenose dolphins in Kino Bay, Gulf of California, Mexico. Pp. 267-283 in The Bottlenose Dolphin (Leatherwood, S., y R. R. Reeves eds.). Academic Press. San Diego, EE. UU.

Bazúa-Durán, C., y A. Delgado-Estrella. 2014. Los tursiones, delfines de la laguna de Términos. Revista FOMIX-Campeche 19:20-26.

Berta, A., J. L. Sumich, y K. M. Kovacs. 2006. Marine Mammals: Evolutionary Biology. Academic Press. San Diego, EE. UU.

Cockroft, V. G., y G. J. B. Ross. 1989. Age, growth and reproduction of bottlenose dolphins, Tursiops truncatus, from the east coast of southern Africa. Fishery Bulletin 88:289-302.

Delgado-Estrella, A. 1997. Relación de las toninas Tursiops truncatus y las toninas moteadas Stenella frontalis con la actividad camaronera en la Sonda de Campeche, México. Anales del Instituto de Biología, Universidad Nacional Autónoma de México, Serie Zoología 68:317-338.

Fernández, S., y A. A. Hohn. 1998. Age, growth and calving season of bottlenose dolphins, Tursiops truncatus, off coastal Texas. Fishery Bulletin 96:357-365.

Hohn, A. A. 1980. Age determination and age related factors in the teeth of Western North Atlantic bottlenose dolphins. Scientific Reports of the Whales Research Institute 32:39-66.

Gallo-Reynoso, J. P . 1984. Interacción de calderones (Globicephala macrorhynchus), con la ballena de aleta (Balaenoptera physalus) y con tursiones (Tursiops truncatus gillii), (Mammalia:Cetacea). Anales del Instituto de Biología, Serie Zoología. UNAM. 55:331-333

Mead, J. G., y C. W. Potter. 1990. Natural history of bottlenose dolphins along the Central Atlantic Coast of the United States. Pp. 165-195 in The Bottlenose Dolphin (Leatherwood, S. y R. R. Reeves, eds.), Academic Press. San Diego, EE. UU.

Myrick, A. 1991. Some new and potential uses of dental layers in studying delphinid populations. Pp. 251- 279 in Dolphin societies, discoveries and puzzle (Pryor K., y K. S. Norris eds.), University of California Press. Berkeley, EE. UU.

Read, A. J., R. S. Wells, A. A. Hohn, y M. D. Scott. 1993. Patterns of growth in wild bottlenose dolphins, Tursiops truncatus. Journal of Zoology 231:107-123.

Reeves, R. R., B. D. Smith, E. A. Crespo, y G. Notobartolo di Sciara (compiladores). 2003. Threats faced by cetaceans. Pp. 13-21 in Dolphins, Whales and Porpoises: 2002-2010 Conservation Action Plan for the World´s Cetaceans. IUCN/SSC Cetacean Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK.

Wade, P. R. 2002. Population dynamics. Pp. 974-979 in Encyclopedia of marine mammals (Perrin, W. F., B. Würsig, y J. G. M. Thewisen, eds.) Academic press. San Diego, EE. UU.


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