INVESTIGADORES
VERA CANDIOTI Maria Florencia
artículos
Título:
Comparative morphology of pond, stream and phytotelm-dwelling tadpoles of the South American Redbelly Toads (Anura: Bufonidae: Melanophryniscus)
Autor/es:
BALDO, D; MARIA FLORENCIA VERA CANDIOTI; HAAD, B; KOLENC, F; BORTEIRO, C; PEREYRA, M; ZANK, C; COLOMBO, P; BORNSCHEIN, M; NETTO, F.; BRUSQUETTI, F.; CONTE, CE; NOGUEIRA COSTA, P; ALMEIDA SANTOS, P; PIE, M
Revista:
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2014 vol. 112 p. 417 - 441
ISSN:
0024-4066
Resumen:
We present a comprehensive review of larval morphology in the Neotropical toad genus Melanophryniscus. The
taxa studied included 23 species with representatives of recognized phenetic groups and different larval
ecomorphological guilds: pond, stream, and phytotelm-dwelling tadpoles. Their external morphology variation is
congruent with current phenetic arrangement based on adult features, but also reflects the habitat where larvae
develop. Lotic tadpoles (i.e. M. tumifrons group and M. krauczuki) in general exhibit a more depressed body,
a longer tail with lower fins, and larger oral discs than lentic forms (i.e. M. stelzneri group, M. moreirae,M. sanmartini, and M. langonei). Despite their peculiar, confined microhabitat, phytotelm larvae do not diverge
markedly from non-arboreal species. The distinctive features of all species are the presence of a pineal end organ
and the placement of the intestinal reversal point at the left of the abdomen in typical larval stages. The buccal
cavity and musculoskeletal anatomy are quite conserved between species, yet some characteristics differ from
those of other bufonids. The presence of one pair of subhyoid muscles is apparently an exclusive trait of
Melanophryniscus among Bufonidae.