Larval development and shape variation of the kelpfish Myxodes viridis (Teleostei: Clinidae)
Autor: | Donald I. Brown, Valentina Bernal-Durán, Mauricio F. Landaeta, Francisca Zavala-Muñoz, Guillermo A. Herrera |
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Rok vydání: | 2011 |
Předmět: |
0106 biological sciences
Morphometrics Teleostei biology Ossification 010604 marine biology & hydrobiology Ontogeny Zoology Anatomy Aquatic Science Oceanography biology.organism_classification 010603 evolutionary biology 01 natural sciences medicine.anatomical_structure Kelpfish medicine Juvenile Allometry Yolk sac medicine.symptom |
Zdroj: | Scientia Marina. |
ISSN: | 1886-8134 0214-8358 |
Popis: | Larval development and shape ontogeny of the kelpfish Myxodes viridis (Clinidae) are described for the first time. A total of 214 individuals ranging between 3.51 and 23.09 mm standard length collected off central Chile were assessed employing classic and geometric morphometrics, illustration with camera lucida and a double-staining technique for cartilaginous and bone structure observation. Based on characteristics such as yolk sac presence and fin formation, six stages of larval development were differentiated: yolk sac, preflexion, flexion, early postflexion, late postflexion and juvenile. Shape changes during development are subtle and occur smoothly, being more significant in the head and preanal length, and ontogenetic allometry accounts for almost 15%. Cartilage formation takes place first at the branchial arches and cranium; then hypural, haemal and neural arches are consecutively formed. Bony structure ossification occurs late in the development. Vertebral centra ossify directly, without cartilaginous matrix replacement. |
Databáze: | OpenAIRE |
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