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Start Over Creator Morrow, Edward H.

1. Giant sperm in a Neotropical moth Xenosoma geometrina (Lepidoptera: Arctiidae)

Creator:
Morrow, Edward H.
Type:
article, model:article, and TEXT
Subject:
Lepidoptera, Arctiidae, Xenosoma, eupyrene, apyrene, sperm size, sperm competition, and Costa Rica
Language:
English
Description:
The stereotypical sperm is characterised as being tiny but produced in great quantities. However a few species (frequently insects) produce much larger spermatozoa, probably with an associated cost in reduced numbers per ejaculate. Here I present the first evidence that a species within the Lepidoptera also produces giant sperm. It seems likely that given wider sampling this record for the largest sperm produced by a lepidopteran may subsequently be broken.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. Sexual dimorphism in the Drosophila melanogaster (Diptera: Drosophilidae) metabolome increases throughout development

Creator:
Ingleby, Fiona C. and Morrow, Edward H.
Format:
print, počítač, and online zdroj
Type:
article, články, journal articles, model:article, and TEXT
Subject:
Zoologie, dvoukřídlí, octomilkovití, ontogeneze, sexuální dimorfismus, Diptera, Drosophilidae, ontogeny, sexual dimorphism, Drosophila melanogaster, metabolome, transcriptome, 2, and 59
Language:
English
Description:
The expression of sexually dimorphic phenotypes from a shared genome between males and females is a longstanding puzzle in evolutionary biology. Increasingly, research has made use of transcriptomic technology to examine the molecular basis of sexual dimorphism through gene expression studies, but even this level of detail misses the metabolic processes that ultimately link gene expression with the whole organism phenotype. We use metabolic profiling in Drosophila melanogaster to complete this missing step, with a view to examining variation in male and female metabolic profiles, or metabolomes, throughout development. We show that the metabolome varies considerably throughout larval, pupal and adult stages. We also find significant sexual dimorphism in the metabolome, although only in pupae and adults, and the extent of dimorphism increases throughout development. We compare this to transcriptomic data from the same population and find that the general pattern of increasing sex differences throughout development is mirrored in RNA expression. We discuss our results in terms of the usefulness of metabolic profiling in linking genotype and phenotype to more fully understand the basis of sexually dimorphic phenotypes., Fiona C. Ingleby, Edward H. Morrow., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public