Cytological ontogeny of the digestive gland in post-hatching Octopus maya, and cytological background of digestion in juveniles

Abstract

AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections AB 11:249-261 (2011) - DOI: https://doi.org/10.3354/ab00305 Cytological ontogeny of the digestive gland in post-hatching Octopus maya, and cytological background of digestion in juveniles Rosario Martínez1,2, Estefany López-Ripoll3, Omar Hernando Avila-Poveda4,5, Ronald Santos-Ricalde6, Maite Mascaró4, Carlos Rosas4,* 1Posgrado Institucional en Ciencias Agropecuarias y Manejo de Recursos Naturales Tropicales, Campus de Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán (UADY), Merida, Yucatan, Mexico 2Universidad Intercultural Maya de Quintana Roo (UIMQRoo), Carretera Muna-Felipe Carrillo Puerto km 137 s/n Presumida, Quintana Roo, Mexico 3Facultad de Biología Marina, Universidad de Bogotá Jorge Tadeo Lozano (UJTL), Cra. 2 No 11 - 68 Edificio Mundo Marino, El Rodadero, Santa Marta, Colombia 4Unidad Multidisciplinaria de Docencia e Investigación (UMDI), Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Puerto de abrigo S/N Sisal, Yucatan, Mexico 5Instituto de Industrias, Universidad del Mar (UMAR), Campus Puerto Angel, Distrito de San Pedro Pochutla, Puerto Angel, Oaxaca, Mexico 6Departamento de Nutrición Animal, Facultad de Medicina Veterinaria y Zootecnia (FMVZ), Campus de Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán (UADY), Merida, Yucatan, Mexico *Corresponding author. Email: crv@ciencias.unam.mx ABSTRACT: The cephalopod digestive gland (DG) is responsible for enzyme production as well as nutrient and lipid storage. Octopus maya (Mollusca: Cephalopoda) is a holobenthic octopus species with aquaculture potential. To develop a balanced food for the rearing of this octopus, it is necessary to understand its digestive physiology. We performed histological studies on the structural change of the DG (cytological ontogeny) associated with age (from 0 to 30 d posthatching, DPH) and food (postprandial change in 120 DPH juveniles). Early ontogeny of DG was defined in 3 stages: (1) yolk platelets stage (0 to 5 DPH), (2) transition stage (6 to 10 DPH) and (3) heterolysosomes (food reserves) stage (>12 DPH). In Stage 1, the DG had anatomically undifferentiated tubules, but was filled with yolk platelets. The tubular structures developed lumen by 5 DPH. Stage 2 (starting at 6 DPH) corresponds to mixed exogenous and endogenous feeding. At that time, the yolk platelets were gradually consumed until completely exhausted at 9 DPH. At the onset of Stage 3, the DG structure was completely tubular, exhibiting digestive cell microvilli and other cellular features typical to octupus DGs. During exogenous feeding (12 DPH and onward), acidophilic secretory lysosomes, heterolysosomes and some heterophagosomes appeared on DG cells. O. maya has long digestive cycles in which the extracellular and intracellular digestion can take up to 8 h. Although the ecological implications of this information for aquaculture will still have to be proven, results demonstrated that O. maya is an energetically efficient species and thus suitable for rearing in captivity. KEY WORDS: Octopus maya · Days posthatching · Digestive gland · Histology · Postprandial · Yolk platelet · Cytology Full text in pdf format PreviousNextCite this article as: Martínez R, López-Ripoll E, Avila-Poveda OH, Santos-Ricalde R, Mascaró M, Rosas C (2011) Cytological ontogeny of the digestive gland in post-hatching Octopus maya, and cytological background of digestion in juveniles. Aquat Biol 11:249-261. https://doi.org/10.3354/ab00305 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AB Vol. 11, No. 3. Online publication date: February 10, 2011 Print ISSN: 1864-7782; Online ISSN: 1864-7790 Copyright © 2011 Inter-Research.