PERSONAL DE APOYO
CAMIN Sergio Ramon
artículos
Título:
Gestation, maternal behaviour, growth and development
Autor/es:
SERGIO CAMÍN
Revista:
ANIMAL BIOLOGY
Editorial:
BRILL ACADEMIC PUBLISHERS
Referencias:
Lugar: Leyden; Año: 2010 p. 79 - 95
ISSN:
1570-7555
Resumen:
Th e fi rst information on the gestation period, maternal behaviour, neonatal development and growth of
the subterranean caviomorph rodent Ctenomys mendocinus Philippi, 1869, is reported herein. My hypothesis
was that, despite its belonging to a typically precocial suborder, the life history traits of C. mendocinusCtenomys mendocinus Philippi, 1869, is reported herein. My hypothesis
was that, despite its belonging to a typically precocial suborder, the life history traits of C. mendocinusC. mendocinus
would favour its altricial condition. Th e off spring of C. mendocinus were categorized as altricial by using
two diff erent classifi cation systems. Th is condition was also refl ected in maternal care. Females built large
nests (2000 cm 3 ) where, after a long gestation period (95.9 days), they gave birth to litters of blind pups,
half-naked, with external ear meatus open and good physical coordination. Th e mothers suckled the
off spring in long bouts (19.9 min), retrieved their pups, and these showed no tactics to reduce the suckling
bout. Overall, evidence was consistent with the hypothesis analyzed, although particularities found,
e.g. some precocial traits, suggest the existence in C. mendocinus of a trade-off between the constraints and
advantages related to its subterranean way of life and the phylogenetic inertia typical of caviomorphsC. mendocinus were categorized as altricial by using
two diff erent classifi cation systems. Th is condition was also refl ected in maternal care. Females built large
nests (2000 cm 3 ) where, after a long gestation period (95.9 days), they gave birth to litters of blind pups,
half-naked, with external ear meatus open and good physical coordination. Th e mothers suckled the
off spring in long bouts (19.9 min), retrieved their pups, and these showed no tactics to reduce the suckling
bout. Overall, evidence was consistent with the hypothesis analyzed, although particularities found,
e.g. some precocial traits, suggest the existence in C. mendocinus of a trade-off between the constraints and
advantages related to its subterranean way of life and the phylogenetic inertia typical of caviomorphs3 ) where, after a long gestation period (95.9 days), they gave birth to litters of blind pups,
half-naked, with external ear meatus open and good physical coordination. Th e mothers suckled the
off spring in long bouts (19.9 min), retrieved their pups, and these showed no tactics to reduce the suckling
bout. Overall, evidence was consistent with the hypothesis analyzed, although particularities found,
e.g. some precocial traits, suggest the existence in C. mendocinus of a trade-off between the constraints and
advantages related to its subterranean way of life and the phylogenetic inertia typical of caviomorphsC. mendocinus of a trade-off between the constraints and
advantages related to its subterranean way of life and the phylogenetic inertia typical of caviomorphs