Paper published in a journal (Scientific congresses and symposiums)
Allometric growth in the damselfishes of the genus Dascyllus (Pomacentridae)
Frederich, Bruno; Colleye, Orphal; Vandewalle, Pierre
2007In Journal of Morphology, 268 (12), p. 1074
Peer Reviewed verified by ORBi
 

Files


Full Text
Abstracts_ICVM8_2007 (J Morph).pdf
Publisher postprint (1.54 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
ontogeny; geometric morphometrics; Pomacentridae; allometry; skull; mandible
Abstract :
[en] The Pomacentridae, commonly known as damselfishes, is one of the most specious families of coral reef fishes (>350 species). The genus Dascyllus contains ten species which are fall into three complexes: the aruanus, reticulatus and trimaculatus. The members of the two first complexes are small-bodied with a maximum standard length (SL) of 50-65 mm and the third complex groups large-bodied fishes of 90-110 mm SL. Phylogenetic data place the aruanus complex in a basal position with the two other species groups as derived sister taxa. Herein, we test the hypothesis that evolutionary change throughout the large-bodied species occurs by isometry. Geometric morphometrics is used to examine the ontogeny of size and shape. This method, which allows description and statistical analysis of form, is applied for the neurocranium and mandible in the three species referencing each complex: Dascyllus aruanus, D. reticulatus and D. trimaculatus. Another closely related pomacentrid, Chromis viridis, was used as outgroup for comparing ontogeny. At the larval stage, the structures are rather similar. Multivariate regression of shapes on size reveals that the three Dascyllus species have a common ontogenetic trajectory which clearly differs from that of C. viridis. During growth, allometry concerns each unit (e.g. shortening of the neurocranium and the mandible) and is identical in each Dascyllus species. However, it appears that the largest studied specimens of D. trimaculatus (90 mm SL) have similar shapes and, differ only in size from the largest ones of both other species (50-60 mm SL).
Research center :
Laboratoire de Morphologie Fonctionnelle et Evolutive
Disciplines :
Zoology
Author, co-author :
Frederich, Bruno  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement
Colleye, Orphal ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive
Vandewalle, Pierre ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive
Language :
English
Title :
Allometric growth in the damselfishes of the genus Dascyllus (Pomacentridae)
Publication date :
2007
Event name :
8th International Congress of Vertebrate Morphology (ICVM 8)
Event organizer :
International Society of Vertebrate Morphologists
Event place :
Paris, France
Event date :
du 16 juillet 2007 au 21 juillet 2007
Audience :
International
Journal title :
Journal of Morphology
ISSN :
0362-2525
eISSN :
1097-4687
Publisher :
Wiley Liss, Inc., New York, United States - New York
Volume :
268
Issue :
12
Pages :
1074
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 19 February 2010

Statistics


Number of views
104 (12 by ULiège)
Number of downloads
5 (2 by ULiège)

Bibliography


Similar publications



Contact ORBi