Eye lens structure of the octopus enteroctopus megalocyathus: Evidence of growth

Erick R. Baqueiro Cárdenas, Sonia Medrano Correa, Ramiro Contreras Guzman, Nancy Barahona, Felipe Briceño, Maria José Villegas, Rodolfo Paredes

Resultado de la investigación: Article

9 Citas (Scopus)

Resumen

The need for age determination for the proper management of octopus fisheries has directed research attention to the few hard structures in the octopod's soft body, beak, statoliths, and the vestigial shell. So far, none of these structures have proved reliable or practical for the purpose. Eye weight, pigment, and nitrogen content have been used successfully in age determination of vertebrates. Given the structural similarity of lenses between octopus and vertebrate, we explore the possibility of using octopus eye lens weight, diameter, and structural marks as age indicators. The lenses of 228 octopi were obtained from the commercial catch from Ancud and Quelln, in Chiloe, Chile. They were measured, weighed, and prepared for histological analysis of the concentric lines structure. The prehatching nucleus was identified, and the total number of lines counted. The lines start to form in the prehatching larvae. Lens diameter and weight showed a much smaller variation than body length or weight, with an apparent correspondence of size or weight classes of body measurements to a lens diameter or weight.

Idioma originalEnglish
Páginas (desde-hasta)199-204
Número de páginas6
PublicaciónJournal of Shellfish Research
Volumen30
N.º2
DOI
EstadoPublished - ago 2011

Huella dactilar

eye lens
Octopodidae
Lens
age determination
vertebrates
vertebrate
shell (molluscs)
statolith
beak
anthropometric measurements
body length
nitrogen content
Chile
eyes
pigments
fisheries
pigment
fishery
body weight
shell

ASJC Scopus subject areas

  • Aquatic Science

Citar esto

Baqueiro Cárdenas, E. R., Medrano Correa, S., Contreras Guzman, R., Barahona, N., Briceño, F., Villegas, M. J., & Paredes, R. (2011). Eye lens structure of the octopus enteroctopus megalocyathus: Evidence of growth. Journal of Shellfish Research, 30(2), 199-204. https://doi.org/10.2983/035.030.0201
Baqueiro Cárdenas, Erick R. ; Medrano Correa, Sonia ; Contreras Guzman, Ramiro ; Barahona, Nancy ; Briceño, Felipe ; Villegas, Maria José ; Paredes, Rodolfo. / Eye lens structure of the octopus enteroctopus megalocyathus : Evidence of growth. En: Journal of Shellfish Research. 2011 ; Vol. 30, N.º 2. pp. 199-204.
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abstract = "The need for age determination for the proper management of octopus fisheries has directed research attention to the few hard structures in the octopod's soft body, beak, statoliths, and the vestigial shell. So far, none of these structures have proved reliable or practical for the purpose. Eye weight, pigment, and nitrogen content have been used successfully in age determination of vertebrates. Given the structural similarity of lenses between octopus and vertebrate, we explore the possibility of using octopus eye lens weight, diameter, and structural marks as age indicators. The lenses of 228 octopi were obtained from the commercial catch from Ancud and Quelln, in Chiloe, Chile. They were measured, weighed, and prepared for histological analysis of the concentric lines structure. The prehatching nucleus was identified, and the total number of lines counted. The lines start to form in the prehatching larvae. Lens diameter and weight showed a much smaller variation than body length or weight, with an apparent correspondence of size or weight classes of body measurements to a lens diameter or weight.",
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Baqueiro Cárdenas, ER, Medrano Correa, S, Contreras Guzman, R, Barahona, N, Briceño, F, Villegas, MJ & Paredes, R 2011, 'Eye lens structure of the octopus enteroctopus megalocyathus: Evidence of growth', Journal of Shellfish Research, vol. 30, n.º 2, pp. 199-204. https://doi.org/10.2983/035.030.0201

Eye lens structure of the octopus enteroctopus megalocyathus : Evidence of growth. / Baqueiro Cárdenas, Erick R.; Medrano Correa, Sonia; Contreras Guzman, Ramiro; Barahona, Nancy; Briceño, Felipe; Villegas, Maria José; Paredes, Rodolfo.

En: Journal of Shellfish Research, Vol. 30, N.º 2, 08.2011, p. 199-204.

Resultado de la investigación: Article

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AU - Baqueiro Cárdenas, Erick R.

AU - Medrano Correa, Sonia

AU - Contreras Guzman, Ramiro

AU - Barahona, Nancy

AU - Briceño, Felipe

AU - Villegas, Maria José

AU - Paredes, Rodolfo

PY - 2011/8

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N2 - The need for age determination for the proper management of octopus fisheries has directed research attention to the few hard structures in the octopod's soft body, beak, statoliths, and the vestigial shell. So far, none of these structures have proved reliable or practical for the purpose. Eye weight, pigment, and nitrogen content have been used successfully in age determination of vertebrates. Given the structural similarity of lenses between octopus and vertebrate, we explore the possibility of using octopus eye lens weight, diameter, and structural marks as age indicators. The lenses of 228 octopi were obtained from the commercial catch from Ancud and Quelln, in Chiloe, Chile. They were measured, weighed, and prepared for histological analysis of the concentric lines structure. The prehatching nucleus was identified, and the total number of lines counted. The lines start to form in the prehatching larvae. Lens diameter and weight showed a much smaller variation than body length or weight, with an apparent correspondence of size or weight classes of body measurements to a lens diameter or weight.

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Baqueiro Cárdenas ER, Medrano Correa S, Contreras Guzman R, Barahona N, Briceño F, Villegas MJ y otros. Eye lens structure of the octopus enteroctopus megalocyathus: Evidence of growth. Journal of Shellfish Research. 2011 ago;30(2):199-204. https://doi.org/10.2983/035.030.0201