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

  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},
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.

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

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

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)

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.



Two distinct genes encode two major isoelectric forms of insecticyanin in the tobacco hornworm, Manduca sexta.

Insecticyanin is a blue pigment found in the epidermis and hemolymph of the tobacco hornworm, Manduca sexta. Two distinct full-length cDNA species were isolated and shown to encode the two major

'Milk' secretion for embryogenesis in a viviparous cockroach.

Humoral induction of milk synthesis in the viviparous cockroach Diploptera punctata

Factors that contribute to the onset of milk production by the brood sac of the viviparous cockroach Diploptera punctata were studied and humoral factors were shown to initiate milk synthesis.

Intra-Uterine Nutrition of the “Beetle-Roach” Diploptera dyliscoides (Serv.) during Embryogenesis, with Notes on its Biology in the Laboratory (Blattaria: diplopteridae)

Diploptera dytiscoides is a common viviparous cockroach that injures the bark of several kinds of trees in Hawaii and other Pacific Islands and is cited as the one exam’ple of pseudoplacental vivi’parity among cockroaches.

A phylogeny of cockroaches and related insects based on DNA sequence of mitochondrial ribosomal RNA genes.

  • S. Kambhampati
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1995
It is indicated that cockroaches are a monophyletic group, whose sister group is Mantoidea, and the phylogeny inferred here does not support a close relationship between C. punctulatus and M. darwiniensis.