Comportamento alimentar de paralarvas do polvo Octopus vulgaris Tipo II (Cuvier, 1797) alimentadas com artêmia enriquecida com microalgas e suplementada com DHA

Bastos, Penélope; Vieira, Graziela; Reis, Isis Mayna Martins dos; Costa, Rosangela Lúcio; Lopes, Gustavo Ruschel

doi:10.1590/1678-4162-9731

Cited by 2 publications

(2 citation statements)

References 10 publications

(3 reference statements)

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“…; O'Brien,Bennice, & Leite, 2021) and their similar size and appearance, the diurnal behavior observed in this study further reinforces the idea that O. insularis and O. americanus occupy distinct ecological niches: O. insularis is adapted to warmer (23°C-29°C), generally shallower (0.5-40 m) water, and is active mostly during the dayLeite et al, 2008;Rosas-Luis et al, 2019; present study), while O. americanus prefers colder (18°C-25°C), usually deeper (up to 200 m) water and is active at night(Amado et al, 2015;Bastos, 2018;Lima et al, 2017). As with Macrotritopus cf.…”

supporting

confidence: 86%

“…This trait distinguishes O. insularis from O. vulgaris sensu stricto and other members of the O. vulgaris complex, such as the geographically co‐occurring O. americanus , both of which are nocturnal in the field (Altman, 1966; Bennice et al, 2021; Kayes, 1973; Lane, 1960; Woods, 1965). Indeed, despite overlapping geographic ranges (Avendaño, Hernández‐Flores, et al, 2020; Avendaño, Roura, et al, 2020; O'Brien, Bennice, & Leite, 2021) and their similar size and appearance, the diurnal behavior observed in this study further reinforces the idea that O. insularis and O. americanus occupy distinct ecological niches: O. insularis is adapted to warmer (23°C–29°C), generally shallower (0.5–40 m) water, and is active mostly during the day (Leite, Haimovici, & Mather, 2009; Leite et al, 2008; Rosas‐Luis et al, 2019; present study), while O. americanus prefers colder (18°C–25°C), usually deeper (up to 200 m) water and is active at night (Amado et al, 2015; Bastos, 2018; Lima et al, 2017). As with Macrotritopus cf.…”

Section: Discussionmentioning

confidence: 56%

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Octospy: What Octopus insularis do in their dens

2023

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Octopus insularis is a benthic octopod from the tropical and subtropical Western Atlantic Ocean that inhabits semi‐permanent “dens” (small crevices) in hard substrate. We used visual surveys to assess den occupancy and remote cameras at den entrances to assess activity patterns of O. insularis of South Caicos (21.5112° N, 71.5190° W) in the Turks and Caicos Islands (May–August, 2020 and July–December, 2021). Dens were occupied for a median of 4 days, but occupancy ranged widely (1 day–2 months), indicating migration between dens at erratic intervals. The two most prevalent behaviors were Away from the Den, time presumably spent mostly foraging, and Quiescence, when the octopus was sleeping or otherwise unreactive. Our data indicate that Octopus insularis is diurnal, with time Away from the Den peaking between mid‐morning (0700–1000) and late afternoon (1600–2000), and with Quiescence peaking at night (2000–0600) and also in the middle of the day (1100–1600), although adherence to this pattern was not strict. High interindividual variation and high within‐individual stability in the proportions of time Away from the Den and Quiescent suggest that individuals of this species vary greatly from each other in their hunting and resting patterns, while also showing high levels of internal consistency for at least a week. These observations will guide future research with this commercially important species, further differentiates O. insularis from congeners, and demonstrate the efficacy of minimally disruptive field techniques in studying behavior.

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