A5016378501- Neurobiology and Insect Physiology Research
- Animal Behavior and Reproduction
- Lepidoptera: Biology and Taxonomy
- Insect and Arachnid Ecology and Behavior
- Plant and animal studies
- Silkworms and Sericulture Research
- Microbial Metabolism and Applications
- Insect symbiosis and bacterial influences
- Genetics, Aging, and Longevity in Model Organisms
- Magnetic properties of thin films
- Insect-Plant Interactions and Control
- Clostridium difficile and Clostridium perfringens research
- Space Exploration and Technology
- Physiological and biochemical adaptations
- Mosquito-borne diseases and control
- Spaceflight effects on biology
- Entomological Studies and Ecology
- Botany and Plant Ecology Studies
- Magnetic Properties of Alloys
- Rare-earth and actinide compounds
National Institute for Basic Biology
2022
The University of Tokyo
2011-2021
Significance A stripe pattern is widely observed among animals and often used for warning or camouflage in caterpillars. However, its genetic background largely unknown. This study showed that the Toll ligand Spätzle3 (Spz-3) responsible silkworm Zebra locus, which causes black stripes on anterior margin of each segment. Exhaustive knockdown experiments spz- Toll- related genes clarified spz-3 Toll-8 are involved melanin pigmentation another mutant. The Spz-3/Toll-8 signaling pathway...
In insects, conspicuous larval pigmentation patterns serve critical ecological roles such as warning signals and mimicry, yet their underlying genetic regulation remains poorly understood. this study, I investigated the molecular mechanisms black yellow in three distinct spot types of silkworm Bombyx mori : large, diffuse L -spots Multilunar ( ) mutant; small, sharply defined + p Normal strain; oval M -hybrid spots an interspecific hybrid with mandarina . Each type comprises a yellowish...
Abstract The swallowtail butterfly Papilio polytes is sexually dimorphic and exhibits female-limited Batesian mimicry. This species also has two female forms, a non-mimetic form with male-like wing patterns, mimetic resembling an unpalatable model, Pachliopta aristolochiae . mimicry locus H constitutes Mendelian ‘supergene’, including transcription factor gene doublesex ( dsx ). However, how the mimetic-type dsx-H ) orchestrates downstream network causes traits remains unclear. Here we...
UV response switch of a wing color in Papilio polytes butterflies is important for dimorphic female-limited Batesian mimicry.
Mimicry is a survival strategy in which organisms deceive their predators by imitating other or the surrounding environment. One example of this involves pupal color polymorphism, widely observed butterflies and moths. It has been suggested that colors Papilio are selected according to tactile stimulation experienced before pupation. Specifically, larvae crawling on smooth leaves become green pupae, but those rough stems brown pupae. These protective fit with However, detailed molecular...
Supergenes are sets of genes and genetic elements that inherited like a single gene control complex adaptive traits, but their functional roles units poorly understood. In Papilio polytes, female-limited Batesian mimicry is thought to be regulated by ∼130 kb inversion region (highly diversified region: HDR) containing 3 genes, UXT, U3X, doublesex (dsx) which switches non-mimetic mimetic types. To determine the unit, we here performed electroporation-mediated RNAi analyses (and further...
In most Papilio species, a younger larva mimics bird droppings but changes its pattern to match host plant colors in final instar. This change is determined by juvenile hormone (JH) during the JH-sensitive period (JHSP) early fourth Recently, we found that homeobox genes control pre-pattern formation specifically JHSP, molecular mechanisms underlying patterning and pigmentation at molt are unknown. By knockdown of Delta Notch xuthus larvae, here showed these define edge area patterns, even...
Abstract Supergenes are sets of genes and genetic elements that inherited like a single gene control complex adaptive traits, but their functional roles units poorly understood. In Papilio polytes , female-limited Batesian mimicry is thought to be regulated by ~130kb inversion region (highly diversified region: HDR) containing three genes, UXT U3X doublesex ( dsx ) which switches non-mimetic mimetic types. To determine the unit, we here performed electroporation-mediated RNAi analyses (and...
The production of overwintering eggs is a critical adaptation for winter survival among many insects. Melanization contributes to eggshell pigmentation and hardening, consequently enhancing resistance environmental stress. complex life cycle the pea aphid (Acyrthosiphon pisum), model hemipteran insect with remarkable reproductive capacity, involves cyclical parthenogenesis. It enables black that undergo obligate diapause survive under unfavorable conditions. Laccase2 (Lac2) essential cuticle...
In most Papilio species, younger larva mimics the bird dropping but changes its pattern into host plant like coloration in final instar. This change is determined by juvenile hormone (JH) during JH-sensitive period (JHSP) early 4th We recently found that three homeobox genes controls pre-pattern formation only JHSP, how patterning established until pigmentation occurs at molt unknown. Here knockdown of Delta and Notch xuthus showed they define edge area patterns, even after suggesting may...
A pregnant sow gave birth to 12 piglets about one month after introduced into a farm. The young died suddenly with symptoms of blooding from the anus and prostration within 19 hours. Immediately death autopsy was performed on four them collect materials for microbiological pathological studies. Clostridium perfringens isolated all intestines C. sordellii paraputrfcum were some in order 106-7/g. These microorganisms also found parts animal body. By neutralization test anti-C. type serum, 15...