\u3ci\u3eLiomys irroratus\u3c/i\u3e

Liomys Merriam, 1902 Spiny Pocket Mice Liomys Merriam, 1902:44. Type species Heteromys alleni Coues (=Liomys irroratus alleni). Context and Content: Order Rodentia, Family Heteromyidae, Subfamily Heteromyinae. The genus Liomys contains five known species

Liomys irroratus

Liomys Merriam, 1902 Spiny Pocket Mice Liomys Merriam, 1902:44. Type species Heteromys alleni Coues (=Liomys irroratus alleni). CONTEXT AND CONTENT: Order Rodentia, Family Heteromyidae, Subfamily Heteromyinae. The genus Liomys contains five known species

Effects of nematicides on nematode population densities and crop yield in a turnip-corn-pea cropping system

Nous avons évalué quatre systèmes de conduite de cultures lors d'une étude de 6 ans afin de lutter contre les nematodes dans un système annuel de production de navet-maïs-pois sur des parcelles de sable loameux Tifton naturellement infestées par les Meloidogyne spp. (environ 90 % de M. incognita et 10 % de M. hapla), les Pratylenchus spp. (environ 65 % de P. scribneri, 25 % de P. brachyurus et 10 % de P. zeae), ainsi que par les Paratrichodorus minor et Criconemella ornata. Le navet (Brassica campestris subsp. rapifera) a toléré de faibles quantités de tous les nematodes. Le maïs (Zea mays) 'Pioneer 3369A' a toléré de plus importantes quantités de tous les nematodes que le maïs 'Funks G-4507'. Les densités de population de juvéniles (J2) de Meloidogyne spp. ont été abaissées en deçà de 80 par 150 cm3 de sol par un mélange composé de 98 % de bromure de méthyle et 2 % de chloropicrine et par 20% de methyl isothiocyanate combiné à 80% d'hydrocarbones C3 chlorinés sur le navet et le maïs. Ces populations de nematodes ont augmenté rapidement chez le pois (Vigna unguiculata) 'Pinkeye purplehull' mais ce ne fut pas le cas chez le cultivar Worthmore. Les densités de populations des autres nematodes n'ont pas été affectées par le cultivar de pois ou par le nématicide, en l'occurrence l'ethoprop. Le fenamiphos a été plus efficace que l'ethoprop en abaissant les densités de nematodes. Les augmentations de rendement du système intensif de conduite des cultures se sont échelonnées de 4% à 52 % par rapport aux témoins non traités.Four management systems were evaluated in a six-year study to control nematodes in a turnip-corn-pea annual cropping System on plots of Tifton loamy sand naturally infested with Meloidogyne spp. (about 90 % M. incognita and 10% M. hapla), Pratylenchus spp. (about 65% P. scribneri, 25% P. brachyurus, and 10% P. zeae), Paratrichodorus minor and Criconemella ornata. Turnip (Brassica campestris subsp. rapifera) supported low numbers of all nematodes. 'Pioneer 3369A' corn (Zea mays) supported greater numbers of all nematodes than 'Funks G-4507'. Population densities of Meloidogyne spp. juveniles (J2) were suppressed below 80 per 150 cm3 of soil by 98 % methyl bromide + 2 % chloropicrin and 20 % methyl isothiocyanate + 80 % chlorinated C3 hydrocarbons on turnip and corn, and increased rapidly on 'Pinkeye purplehull', but not on a resistant cultivar, 'Worthmore' pea (Vigna unguiculata). Population densities of other nematodes were not affected by cultivar of pea or the nematicide, ethoprop. Fenamiphos was more effective than ethoprop in suppressing nematode population densities. Increases in crop yield in the intensive management system ranged from 4% to 52% over untreated controls

Bats of the Devils River State Natural Area- Big Satan Unit, Val Verde County, Texas

A survey of bats is being conducted to determine the species diversity and community composition at Devils River State Natural Area (DRSNA) – Big Satan Unit, as part of ongoing research with the Texas Parks and Wildlife Department. The DRSNA is a 38,000-acre preserve situated along a 10.8-mile stretch of the Devils River in Val Verde County, 40 miles north of Del Rio, Texas. A handheld acoustic monitoring device, the Echo Meter EM3+ Ultrasonic Recorder, was used to detect species based on echolocation calls. Calls were recorded along an 8-mile long transect route that runs generally west to east across DRSNA, and at three stationary netting sites around the survey area. Echolocation calls vary among bats allowing species to be identified in flight. An analysis software system, called Kaleidoscope, was used to analyze the sound files recorded. Kaleidoscope is an integrated suite of bat data tools designed to help quickly convert files, and sort and categorize bat data by species. From a total of 3,845 sound files recorded so far, 699 have been recognized as good bat echolocation calls that can be used to identify species, while 3,146 were eliminated as noise files. Preliminary results found seven species (Lasiurus borealis, Lasiurus cinereus, Lasionycteris noctivagans, Nycticeius humeralis, Parastrellus hesperus, Perimyotis subflavus, Tadarida brasiliensis) present at DRSNA. We will continue to collect data for the next year and hope to predict bat species distributions, map centers of high diversity, and identify key conservation areas at Devils River.Graduate Student Research Fellowshi