2014
DOI: 10.1590/1678-476620141042189199
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Abstract: ABSTRACT. Here we examine major anatomical characteristics of Corydoras aff. paleatus (Jenyns, 1842) post-hatching development, in parallel with its neurobehavioral evolution. Eleutheroembryonic phase, 4.3-8.8 days post-fertilization (dpf); 4.3-6.4 mm standard length (SL) encompasses from hatching to transition to exogenous feeding. Protopterygiolarval phase (8.9-10.9 dpf; 6.5-6.7 mm SL) goes from feeding transition to the commencement of unpaired fin differentiation, which marks the start of pterygiolarval ph… Show more

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Cited by 5 publications
(5 citation statements)
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References 40 publications
(23 reference statements)
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“…The underlying neural command appears to be ballistic, and the reflex is unaffected by sensory information once it is initiated (Eaton and Emberley, 1991). The c-start is particularly important for larval fish, and larvae and adults of a related species, Corydoras paleateus, exhibit well-developed Mauthner cells and circuits, which trigger the c-start response (Rodríguez-Ithurralde et al, 2014). We have also observed adult Bronze Cory catfish undergoing a c-start response while responding to a threat stimulus (Riley et al, 2019a).…”
Section: Introductionmentioning
confidence: 71%
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“…The underlying neural command appears to be ballistic, and the reflex is unaffected by sensory information once it is initiated (Eaton and Emberley, 1991). The c-start is particularly important for larval fish, and larvae and adults of a related species, Corydoras paleateus, exhibit well-developed Mauthner cells and circuits, which trigger the c-start response (Rodríguez-Ithurralde et al, 2014). We have also observed adult Bronze Cory catfish undergoing a c-start response while responding to a threat stimulus (Riley et al, 2019a).…”
Section: Introductionmentioning
confidence: 71%
“…Morphological constraints seem unlikely, as there were a few c-starts in the adult fish stimulated in this study, as well as in adult fish in our previous work (Riley et al, 2019). It also seems unlikely that larvae would adopt a freeze threat response before the development of prominent anterior pectoral fin rays or armoured scutes (which occurs at >22 mm in Corydoras arcuatus, a related species of similar size (Sire, 1993)) because they have very little protection from predation (Rodríguez-Ithurralde et al, 2014) and would rely on camouflage alone. Therefore, it seems that the most likely explanation for the change in response to tactile stimulation is that older larvae were less likely to perceive tactile stimulation as a threat.…”
Section: Discussionmentioning
confidence: 99%
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“…A scoring protocol was developed by RJR and ERG, and both scorers cross‐scored three videos to ensure consistency; all subsequent scoring was performed by RJR. Body lengths are a common measure of cohesion in fish aggregations (Katz, Tunstrøm, Ioannou, Huepe, & Couzin, ; Rodríguez‐Ithurralde, del Puerto, & Fernández‐Bornia, ) and we chose two body lengths as our measure of cohesion because this is a distance at which individuals can readily nudge each other.…”
Section: Methodsmentioning
confidence: 99%