Evolution of a novel function: nutritive milk in the viviparous cockroach, Diploptera punctata

@article{Williford2004EvolutionOA,
  title={Evolution of a novel function: nutritive milk in the viviparous cockroach, Diploptera punctata},
  author={Anna Williford and Barbara Stay and Debashish Bhattacharya},
  journal={Evolution \& Development},
  year={2004},
  volume={6}
}
Summary Cockroach species show different degrees of maternal contribution to the developing offspring. In this study, we identify a multigene family that encodes water‐soluble proteins that are a major component of nutritive “Milk” in the cockroach, Diploptera punctata. This gene family is associated with the evolution of a new trait, viviparity, in which the offspring receive nutrition during the gestation period. Twenty‐five distinct Milk complementary DNAs were cloned and partially… 

Molecular mechanisms underlying milk production and viviparity in the cockroach, Diploptera punctata.

Adenotrophic viviparity in tsetse flies: potential for population control and as an insect model for lactation.

TLDR
Findings that utilized transcriptomics, physiological assays, and RNA interference-based functional analysis to understand different components of adenotrophic viviparity in tsetse flies are described.

Matrotrophic viviparity constrains microbiome acquisition during gestation in a live‐bearing cockroach, Diploptera punctata

TLDR
In this research, 16S rRNA sequencing was used to characterize maternal and embryonic microbiomes as well as the development of the whole‐body microbiome across nymphal development and provides insight into the microbiome development, specifically with relation to viviparity, provisioning of milk‐like secretions, and mother–offspring interactions during pregnancy.

Matrotrophy and placentation in invertebrates: a new paradigm

TLDR
It is reported that regardless of the degree of expression, matrotrophy is established or inferred in at least 21 of 34 animal phyla, significantly exceeding previous accounts and changing the old paradigm that these phenomena are infrequent among invertebrates.

The Homeodomain Protein Ladybird Late Regulates Synthesis of Milk Proteins during Pregnancy in the Tsetse Fly (Glossina morsitans)

TLDR
The identification and delineation of the regulatory sequence of a major milk protein gene (milk gland protein 1:mgp1) by utilizing a combination of molecular techniques in tsetse, Drosophila transgenics, transcriptomics and in silico sequence analyses suggest that Lbl is part of a conserved reproductive regulatory system that could have implications beyond t setse to other vector insects such as mosquitoes.

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