The Ozark Mountains are a region with high endemism and biodiversity, yet few invertebrate invent... more The Ozark Mountains are a region with high endemism and biodiversity, yet few invertebrate inventories have been made and few sites extensively studied. We surveyed a site near Steel Creek Campground, along the Buffalo National River in Arkansas, using twelve trap types - Malaise traps, canopy traps (upper and lower collector), Lindgren multifunnel traps (black, green, and purple), pan traps (blue, purple, red, white, and yellow), and pitfall traps - and Berlese-Tullgren extraction for eight and half months. We provide collection records of beetle species belonging to eight families collected at the site. Thirty one species represent new state records: (Buprestidae) Actenodes acornis, Agrilus cephalicus, Agrilus ohioensis, Agrilus paracelti, Taphrocerus nicolayi; (Carabidae) Agonum punctiforme, Synuchus impunctatus; (Curculionidae) Acalles clavatus, Acalles minutissimus, Acoptus suturalis, Anthonomus juniperinus, Anametis granulata, Idiostethus subcalvus, Eudociminus mannerheimii, Madarellus undulatus, Magdalis armicollis, Magdalis barbita, Mecinus pascuorum, Myrmex chevrolatii, Myrmex myrmex, Nicentrus lecontei, Otiorhynchus rugosostriatus, Piazorhinus pictus, Phyllotrox ferrugineus, Plocamus hispidulus, Pseudobaris nigrina, Pseudopentarthrum simplex, Rhinoncus pericarpius, Sitona lineatus, Stenoscelis brevis, Tomolips quericola. Additionally, three endemic carabids, two of which are known only from the type series, were collected.
Orussus minutus is an uncommonly collected parasitoid sawfly known from the eastern United States... more Orussus minutus is an uncommonly collected parasitoid sawfly known from the eastern United States. We report specimens Orussus minutus Middlekauff, 1983, from Arkansas, Iowa, Minnesota, and Manitoba, which represent new state and province records and significantly expand the known range of the species west from previous records; provide collection information for unpublished specimens housed in the United States National Museum collection, which includes new state records for West Virginia and Michigan; and report two specimens housed in the Biological Museum at Lund University that represent new state records for Connecticut.
The basic helix-loop-helix transcription factors are present in animals, plants and fungi and pla... more The basic helix-loop-helix transcription factors are present in animals, plants and fungi and play important roles in controlling cellular proliferation, tissue differentiation, development and detoxification. RNAi has become a widely used tool to knock-down and analyze the function of genes. We searched the red flour beetle genome sequence deposited into National Center for Biotechnology information and Human genome sequencing center databases and identified 53 bHLH genes. TcNeuroD is a unique gene identified in red flour beetle and is absent in all the six insect genome sequences available and is present in vertebrates. Phylogenetic analyses using Mr. Bayes program has classified these 53 genes into ten families as defined by bHLH-PAS, HES, Myc/USF, Hand, Mesp, Shout, p48, NeuroD/Neurogenin, Atonal and AS-C. As RNAi works well in Tribolium castaneum, double-stranded RNA's of all 53 bHLH genes were injected into larvae and the effects of RNAi-mediated knock-down in expression o...
Some organisms may rapidly adapt to new conditions, whereas their close relatives may not do so, ... more Some organisms may rapidly adapt to new conditions, whereas their close relatives may not do so, due to both ecological and intrinsic parameters. Host specificity within host-parasite systems may be governed by similar rules. The Poultry Red Mite Dermanyssus gallinae is the only species of Dermanyssus infesting farms and the least host specific species within this genus of bird ectoparasites. The aim of the study was to detect intrinsic characteristics within Dermanyssus in relation to its host specificity and synanthropicity and predict potentially enhanced ability to adapt. For such a purpose, we test whether any conspicuous differences exist in intraspecific mitochondrial and nuclear DNA polymorphism between generalist and specialist species and start an exploration of population structure and gene flows within the pest species. Comparisons within and between species including wild and synanthropic lineages of four species provided the following results : within the only generali...
The Ozark Mountains are a region with high endemism and biodiversity, yet few invertebrate invent... more The Ozark Mountains are a region with high endemism and biodiversity, yet few invertebrate inventories have been made and few sites extensively studied. We surveyed a site near Steel Creek Campground, along the Buffalo National River in Arkansas, using twelve trap types - Malaise traps, canopy traps (upper and lower collector), Lindgren multifunnel traps (black, green, and purple), pan traps (blue, purple, red, white, and yellow), and pitfall traps - and Berlese-Tullgren extraction for eight and half months. We provide collection records of beetle species belonging to eight families collected at the site. Thirty one species represent new state records: (Buprestidae) Actenodes acornis, Agrilus cephalicus, Agrilus ohioensis, Agrilus paracelti, Taphrocerus nicolayi; (Carabidae) Agonum punctiforme, Synuchus impunctatus; (Curculionidae) Acalles clavatus, Acalles minutissimus, Acoptus suturalis, Anthonomus juniperinus, Anametis granulata, Idiostethus subcalvus, Eudociminus mannerheimii, Madarellus undulatus, Magdalis armicollis, Magdalis barbita, Mecinus pascuorum, Myrmex chevrolatii, Myrmex myrmex, Nicentrus lecontei, Otiorhynchus rugosostriatus, Piazorhinus pictus, Phyllotrox ferrugineus, Plocamus hispidulus, Pseudobaris nigrina, Pseudopentarthrum simplex, Rhinoncus pericarpius, Sitona lineatus, Stenoscelis brevis, Tomolips quericola. Additionally, three endemic carabids, two of which are known only from the type series, were collected.
Orussus minutus is an uncommonly collected parasitoid sawfly known from the eastern United States... more Orussus minutus is an uncommonly collected parasitoid sawfly known from the eastern United States. We report specimens Orussus minutus Middlekauff, 1983, from Arkansas, Iowa, Minnesota, and Manitoba, which represent new state and province records and significantly expand the known range of the species west from previous records; provide collection information for unpublished specimens housed in the United States National Museum collection, which includes new state records for West Virginia and Michigan; and report two specimens housed in the Biological Museum at Lund University that represent new state records for Connecticut.
The basic helix-loop-helix transcription factors are present in animals, plants and fungi and pla... more The basic helix-loop-helix transcription factors are present in animals, plants and fungi and play important roles in controlling cellular proliferation, tissue differentiation, development and detoxification. RNAi has become a widely used tool to knock-down and analyze the function of genes. We searched the red flour beetle genome sequence deposited into National Center for Biotechnology information and Human genome sequencing center databases and identified 53 bHLH genes. TcNeuroD is a unique gene identified in red flour beetle and is absent in all the six insect genome sequences available and is present in vertebrates. Phylogenetic analyses using Mr. Bayes program has classified these 53 genes into ten families as defined by bHLH-PAS, HES, Myc/USF, Hand, Mesp, Shout, p48, NeuroD/Neurogenin, Atonal and AS-C. As RNAi works well in Tribolium castaneum, double-stranded RNA's of all 53 bHLH genes were injected into larvae and the effects of RNAi-mediated knock-down in expression o...
Some organisms may rapidly adapt to new conditions, whereas their close relatives may not do so, ... more Some organisms may rapidly adapt to new conditions, whereas their close relatives may not do so, due to both ecological and intrinsic parameters. Host specificity within host-parasite systems may be governed by similar rules. The Poultry Red Mite Dermanyssus gallinae is the only species of Dermanyssus infesting farms and the least host specific species within this genus of bird ectoparasites. The aim of the study was to detect intrinsic characteristics within Dermanyssus in relation to its host specificity and synanthropicity and predict potentially enhanced ability to adapt. For such a purpose, we test whether any conspicuous differences exist in intraspecific mitochondrial and nuclear DNA polymorphism between generalist and specialist species and start an exploration of population structure and gene flows within the pest species. Comparisons within and between species including wild and synanthropic lineages of four species provided the following results : within the only generali...
Uploads
Papers by Ashley P G Dowling