Influence of genetic compatibility on offspring fitness in the red-backed toadlet

Presented are data from a manipulative study  investigating the
influence of parental genetic compatibility on offspring
viability in the red backed toadlet (Pseudophryne coriacea). The
study used artificial fertilisation techniques combined with a
cross-classified breeding design (North Carolina type II) to control
parentage and partition sources of genetic and phenotypic variance in
offspring fitness.  The study also tested the
influence of parental genetic similarity on offspring viability.
Quantitative genetic analysis of the data revealed no
significant additive genetic effects (sire effects), but highly
significant non-additive genetic effects (sire x dam interaction effects),
on fertilisation success, survival during embryonic development, and
hatching success. Analysis also revealled significant
associations between parental genetic similarity and offspring survival
(whereby survival was higher when parents were more related), and
significant positive relationships between fertilisation success and
embryo survival through to hatching.

本数据集呈现的是一项操控性实验的数据，该实验旨在探究亲本遗传相容性对红背狭口蟾（Pseudophryne coriacea）后代存活力的影响。本研究采用人工受精技术结合交叉分类繁育设计（北卡罗来纳II型），以控制亲本来源，并分解后代适合度的遗传与表型方差来源。此外，本研究还检验了亲本遗传相似度对后代存活力的影响。对该数据的数量遗传学分析显示，在受精成功率、胚胎发育期间存活率以及孵化成功率方面，未检测到显著的加性遗传效应（父本效应），但存在极显著的非加性遗传效应（父本×母本互作效应）。分析还发现，亲本遗传相似度与后代存活率之间存在显著关联（即亲本亲缘关系越近，后代存活率越高），同时受精成功率与直至孵化前的胚胎存活率之间存在显著正相关关系。