Post-fledging survival of altricial
birds: ecological determinants and adaptation.
In such precocial mammal species, maintaining maternal contact to learn foraging patterns may be more important than the energy demands and nutritional constraints during lactation (Pond, 1977), suggesting that lactation and suckling may not play important roles when compared to altricial
Despite advances in research, most studies report that; although possible, it is still uneconomical to use inert food as the first exogenous feed for altricial
fish larvae (TESSER et al., 2005; JOMORI et al., 2008; MENOSSI, et al., 2012).
En cambio las especies altriciales
(desvalidas, con un periodo de cuidado parental mas prolongado), podrian ser especies donde la domesticacion fue mas dificil.
Trees with dense vegetation cover would assure a good shelter for altricial
birds including Blackbird.
Regarding the fact that most of the Colombian native fish have altricial
or indirect development larvae, several authors say that the critical time and the success in the production of fingerlings is the start of the exogenous feeding.
New terminology emerged to describe this group of young adults remaining in the parental home for extended periods; generation "boomerang," "kangaroo," "hotel Mama" or "altricial
," referring to a species of birds who are born blind and helpless, depending completely on their parents for warmth and food until they have developed enough to leave the nest.
This holds true whether young ones of a particular species are born in precocial or altricial
An evolutionary backdrop to derived features of paternal care should also begin with a discussion of the evolution of highly altricial
(helpless) and dependent offspring.
Age-related differences affecting butyrylcholinesterase levels have been previously reported in sparrowhawks (Accipiter nisus), European kestrels (Falco tinnunculus), tawny owls (Strix aluco), (45) eastern bluebirds (Sialia sialis), and European starlings (Sturnus vulgaris),' with adults having higher levels than juveniles in altricial
" species, which means "requiring nourishment", offspring require considerable parental care to reach self-sufficiency.