scholarly journals A case of maternal response towards dead offspring in wild bonobos: Staring, grooming but not carrying

2019 ◽  
Vol 26 (1) ◽  
pp. 10-12
Author(s):  
Shintaro Ishizuka
Keyword(s):  
Maternal Response

scholarly journals The efficiency of multi-generation selection on maternal traits, with implications for reindeer

2020 ◽  
Vol 29 (5) ◽  
Author(s):  
Jaakko Pietarinen ◽  
Asko Mäki-Tanila
Keyword(s):  
Negative Correlation ◽  
Variance Component ◽  
Economic Value ◽  
Maternal Response ◽  
Mammal Species ◽  
Growth And Survival ◽  
Economic Weights ◽  
Component Approach ◽  
Estimated Breeding Values ◽  
Variance Component Approach

Maternally affected traits, such as juvenile growth and survival, provide resilience in mammal species, in particular for reindeer living in extreme northern habitat. The genetic variation in such traits is caused by direct and maternal genetic effects (DGE and MGE, respectively). We used Willham’s variance-component approach and extended a family index with the focal individual and its full- and half-sibs to an approximated BLUP (pseudo-BLUP) by including the parents’ estimated breeding values. Most of the deviations of the predicted responses from the simulated ones were 4.1% for DGE and 5.3% for MGE. The benefits of index and BLUP selection are high in the case of negative correlation, large full-sib family and in particular, when maternal half-sibs are available. Higher economic value for MGE than for DGE is needed, since with equal heritabilities and economic weights for the effects the maternal response is 40 to 70% of the direct one. With negative correlation, records on collateral relatives beyond sibs are possibly needed. They would support also the prediction of MGE in uniparous reindeer lacking full-sib information.

Emotional Stress in the Symbiotic Relationship

1969 ◽  
Vol 50 (9) ◽  
pp. 503-507
Author(s):  
Mary E. Bergen
Keyword(s):  
Emotional Stress ◽  
Symbiotic Relationship ◽  
Maternal Response

Knowledge of maternal response to infant demands alerts the caseworker to the double psychological role required in serving immature clients of all ages

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