scholarly journals Visual mate preference evolution during butterfly speciation is linked to neural processing genes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Matteo Rossi ◽  
Alexander E. Hausmann ◽  
Timothy J. Thurman ◽  
Stephen H. Montgomery ◽  
Riccardo Papa ◽  
...  
Keyword(s):  
Animal Species ◽  
Mate Preference ◽  
Ionotropic Glutamate Receptor ◽  
Visual Integration ◽  
Population Genomic ◽  
Central Brain ◽  
Gene Expression Analyses ◽  
Preference Evolution ◽  
Genetic Mechanisms ◽  
Visual Preferences

Abstract Many animal species remain separate not because their individuals fail to produce viable hybrids but because they “choose” not to mate. However, we still know very little of the genetic mechanisms underlying changes in these mate preference behaviours. Heliconius butterflies display bright warning patterns, which they also use to recognize conspecifics. Here, we couple QTL for divergence in visual preference behaviours with population genomic and gene expression analyses of neural tissue (central brain, optic lobes and ommatidia) across development in two sympatric Heliconius species. Within a region containing 200 genes, we identify five genes that are strongly associated with divergent visual preferences. Three of these have previously been implicated in key components of neural signalling (specifically an ionotropic glutamate receptor and two regucalcins), and overall our candidates suggest shifts in behaviour involve changes in visual integration or processing. This would allow preference evolution without altering perception of the wider environment.

scholarly journals Visual mate preference evolution during butterfly speciation is linked to neural processing genes

2020 ◽  
Author(s):  
Matteo Rossi ◽  
Alexander E. Hausmann ◽  
Timothy J. Thurman ◽  
Stephen H. Montgomery ◽  
Riccardo Papa ◽  
...  
Keyword(s):  
Animal Species ◽  
Mate Preference ◽  
Ionotropic Glutamate Receptor ◽  
Visual Integration ◽  
Population Genomic ◽  
Central Brain ◽  
Gene Expression Analyses ◽  
Preference Evolution ◽  
Genetic Mechanisms ◽  
Visual Preferences

Many animal species remain separate not because they fail to produce viable hybrids, but because their individuals “choose” not to mate. However, we still know very little of the genetic mechanisms underlying changes in these mate preference behaviours. Heliconius butterflies display bright warning patterns, which they also use to recognize conspecifics. Here, we couple QTL for divergence in visual preference behaviours with population genomic and gene expression analyses of neural tissue (central brain, optic lobes and ommatidia) across development in two sympatric Heliconius species. Within a region containing 200 genes, we identify five genes that are strongly associated with divergent visual preferences. Three of these have previously been implicated in key components of neural signalling (specifically an ionotropic glutamate receptor and two regucalcins), and overall our candidates suggest shifts in behaviour involve changes in visual integration or processing. This would allow preference evolution without altering perception of the wider environment.

What is driving male mate preference evolution in Jamaican field crickets?

Ethology ◽  
2017 ◽  
Vol 123 (11) ◽  
pp. 793-799 ◽  
Author(s):  
Susan M. Bertram ◽  
Sarah J. Harrison ◽  
Genevieve L. Ferguson ◽  
Ian R. Thomson ◽  
Michelle J. Loranger ◽  
...  
Keyword(s):  
Mate Preference ◽  
Field Crickets ◽  
Preference Evolution ◽  
Male Mate

scholarly journals Drosophila septin interacting protein 1 regulates neurogenesis in the early developing larval brain

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Jia-Yi Wei ◽  
Sao-Yu Chu ◽  
Yu-Chien Huang ◽  
Pei-Chi Chung ◽  
Hung-Hsiang Yu
Keyword(s):  
Novel Mutation ◽  
Full Length ◽  
Projection Neurons ◽  
Loss Of Function ◽  
Larval Brain ◽  
Interacting Protein ◽  
Larval Stages ◽  
C Terminus ◽  
Central Brain ◽  
Genetic Mechanisms

AbstractNeurogenesis in the Drosophila central brain progresses dynamically in order to generate appropriate numbers of neurons during different stages of development. Thus, a central challenge in neurobiology is to reveal the molecular and genetic mechanisms of neurogenesis timing. Here, we found that neurogenesis is significantly impaired when a novel mutation, Nuwa, is induced at early but not late larval stages. Intriguingly, when the Nuwa mutation is induced in neuroblasts of olfactory projection neurons (PNs) at the embryonic stage, embryonic-born PNs are generated, but larval-born PNs of the same origin fail to be produced. Through molecular characterization and transgenic rescue experiments, we determined that Nuwa is a loss-of-function mutation in Drosophila septin interacting protein 1 (sip1). Furthermore, we found that SIP1 expression is enriched in neuroblasts, and RNAi knockdown of sip1 using a neuroblast driver results in formation of small and aberrant brains. Finally, full-length SIP1 protein and truncated SIP1 proteins lacking either the N- or C-terminus display different subcellular localization patterns, and only full-length SIP1 can rescue the Nuwa-associated neurogenesis defect. Taken together, these results suggest that SIP1 acts as a crucial factor for specific neurogenesis programs in the early developing larval brain.

Author response for "Perceptual rivalry across animal species"

2020 ◽  
Author(s):  
Olivia Carter ◽  
Bruno Swinderen ◽  
David Leopold ◽  
Shaun Collin ◽  
Alex Maier
Keyword(s):  
Animal Species ◽  
Author Response ◽  
Perceptual Rivalry

Anchoring Fibrils in Arterial Endothelium

1969 ◽  
Vol 27 ◽  
pp. 274-275
Author(s):  
A. Trillo
Keyword(s):  
Carotid Arteries ◽  
Animal Species ◽  
Cell Layer ◽  
Present Communication ◽  
Internal Elastic Lamina ◽  
Endothelial Cell Layer ◽  
Structural Details ◽  
Rats And Mice ◽  
Arterial Endothelium ◽  
Elastic Lamina

There are conflicting reports regarding some fine structural details of arteries from several animal species. Buck denied the existence of a sub-endothelial space, while Karrer and Keech described a space of variable width which separates the endothelium from the underlying internal elastic lamina in aortas of aging rats and mice respectively.The present communication deals with the ultrastrueture of the interface between the endothelial cell layer and the internal elastic lamina as observed in carotid arteries from rabbits of varying ages.

Ultrastructure and Drug Metabolism in the Developing Guinea Pig

1973 ◽  
Vol 31 ◽  
pp. 538-539
Author(s):  
W. Kuenzig ◽  
M. Boublik ◽  
J.J. Kamm ◽  
J.J. Burns
Keyword(s):  
Guinea Pig ◽  
Metabolic Activity ◽  
Animal Species ◽  
Adult Animal ◽  
Smooth Endoplasmic Reticulum ◽  
Fetal Life ◽  
Mixed Function Oxidase ◽  
Cytochrome P 450 ◽  
Microsomal Mixed Function Oxidase ◽  
Mixed Function Oxidase Activity

Unlike a variety of other animal species, such as the rabbit, mouse or rat, the guinea pig has a relatively long gestation period and is a more fully developed animal at birth. Kuenzig et al. reported that drug metabolic activity which increases very slowly during fetal life, increases rapidly after birth. Hepatocytes of a 3-day old neonate metabolize drugs and reduce cytochrome P-450 at a rate comparable to that observed in the adult animal. Moreover the administration of drugs like phenobarbital to pregnant guinea pigs increases the microsomal mixed function oxidase activity already in the fetus.Drug metabolic activity is, generally, localized within the smooth endoplasmic reticulum (SER) of the hepatocyte.

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