Composition of spider prey captured by the wasp Trypoxylon (Trypargilum) tridentatum tridentatum in two habitats in an oasis in Baja California Sur, Mexico

2008 ◽  
Vol 140 (3) ◽  
pp. 388-392 ◽  
Author(s):  
Karina Domínguez ◽  
María Luisa Jiménez
Keyword(s):  
Baja California ◽  
Prey Species ◽  
New Records ◽  
Baja California Peninsula ◽  
Baja California Sur ◽  
Trap Nests ◽  
The Family ◽  
Xeric Habitat ◽  
Unidentified Species

AbstractTrypoxylon (Trypargilum) tridentatum tridentatum Packard (Hymenoptera: Crabronidae) is a spider-hunting wasp in mesic and xeric habitats in the arid Baja California peninsula of Mexico. Spider (Araneae) prey were collected every 2 weeks from wasp trap nests. Individuals of the family Araneidae were the most abundant prey (60.9%), followed by Theridiidae and Mimetidae. Dictynidae, Anyphaenidae, Salticidae, Uloboridae, Tetragnathidae, Miturgidae, and Philodromidae were captured only in the mesic habitat. An unidentified species of Eriophora Simon (Araneidae) was the most frequently collected spider in the xeric habitat (29.0%), followed by Theridion submissum Gertsch and Davis (Theridiidae) (24.0%), which was the commonest prey species in the mesic habitat (21.1%), and Metepeira crassipes Chamberlin and Ivie (Araneidae) (16.5%). Nineteen species and three families are newly recorded as prey. The araneids Araneus lineatipes (O.P.-Cambridge) and Kaira alba (Hentz) and the uloborids Philoponella arizonica (Gertsch) and Uloborus segregatus Gertsch are new records for Baja California.

scholarly journals NEW RECORDS OF BENTHIC MARINE DIATOM TAXA FOR MEXICAN LITTORALS

2017 ◽  
Vol 32 (1) ◽  
pp. 59
Author(s):  
DAVID ALFARO SIQUEIROS BELTRONES ◽  
URI ARGUMEDO HERNÁNDEZ
Keyword(s):  
Baja California ◽  
New Records ◽  
Marine Diatom ◽  
Baja California Sur

La mayor parte de los registros de especies de diatomeas bentónicas marinas para litorales mexicanos corresponden principalmente al noroeste del país. Los últimos estudios sobre este tópico en esta región comprenden Laguna Guerrero Negro (LGN), Baja California-Baja California Sur. En este informe se describen y se representan iconográficamente seis nuevos registros taxonómicos de diatomeas bentónicas para los litorales mexicanos, en su mayoría raros, provenientes de sedimentos de LGN. 

scholarly journals LOS MAMÍFEROS DEL ESTADO DE BAJA CALIFORNIA SUR

2014 ◽  
Vol 4 (1) ◽  
pp. 24
Author(s):  
Mayra de la Paz Cuevas ◽  
Evelyn Patricia Rios Mendoza ◽  
Sergio Ticul Álvarez-Castañeda
Keyword(s):  
Marine Mammals ◽  
Baja California ◽  
The State ◽  
Baja California Peninsula ◽  
Baja California Sur ◽  
Palabras Clave ◽  
Mexican State

ResumenBaja California Sur es el estado mexicano de mayor extensión costera; conforma un área de gran diversidad y endemismos de especies y subespecies de mamíferos terrestres y marinos, cuenta con 30 familias, 69 géneros y 104 especies, de las cuales 11 son endémicas. Se presenta la lista actualizada de la mastofauna para el estado de acuerdo a los más recientes estudios taxonómicos, de sistemática y conservación. Baja California Sur es considerado como una de las regiones prioritarias para la conservación a nivel internacional, atrayendo constantemente la atención de organizaciones e instituciones dedicadas a la protección del ambiente. Palabras clave: endemismo, mastofauna, península de Baja California, subespecies. AbstractBaja California Sur is the Mexican state with the largest coastal extent; forms an area of great diversity and endemism of species and subspecies of terrestrial and marine mammals, has 30 families, 69 genera and 104 species, of which 11 are endemic. We give an updated mammal checklist for the state according to the latest taxonomic, systematic and conservation studies. Baja California Sur is considered as one of the priority regions for conservation internationally, constantly drawing the attention of organizations and institutions involved in environmental protection.Key words: Baja California, peninsula, endemism, mammals, subspecies.

New state records and updated checklist of Aphodiini and Eupariini (Coleoptera: Scarabaeidae: Aphodiinae) from Mexico

Zootaxa ◽  
2017 ◽  
Vol 4244 (4) ◽  
pp. 493
Author(s):  
PABLO MINOR
Keyword(s):  
Baja California ◽  
New Records ◽  
Baja California Sur ◽  
Distrito Federal ◽  
State Records

Thirty one new state records of species of Aphodiinae (Coleoptera: Scarabaeidae) from Mexico are presented, 24 species belong to Aphodiini and seven species to Eupariini into the genera Agrilinellus, Alloblackburneus, Aphotaenius, Ataenius, Blackburneus, Cephalocyclus, Coelotrachelus, Euparia, Euparixia, Geomyphilus, Gonaphodiellus, Gonaphodiopsis, Haroldiellus, Liothorax, Nialaphodius, Odontolytes, Oscarinus, Pharaphodius, and Planolinellus. New records are from the states of Aguascalientes, Baja California, Baja California Sur, Campeche, Colima, Chiapas, Estado de México, Guerrero, Hidalgo, Jalisco, Michoacán, Morelos, Nayarit, Puebla, Sonora, Tabasco, Tamaulipas, Tlaxcala, Veracruz, Zacatecas, and Distrito Federal. A checklist with updated nomenclature is included for the recorded species of Aphodiini and Eupariini from Mexico. 

Specimens of Stereomastis pacifica (Faxon, 1893) collected during the TALUD XVI-B cruise off the west coast of the Baja California Peninsula, Mexico

Crustaceana ◽  
2015 ◽  
Vol 88 (2) ◽  
pp. 203-207
Author(s):  
Michel E. Hendrickx
Keyword(s):  
West Coast ◽  
Baja California ◽  
New Records ◽  
Baja California Peninsula ◽  
The West ◽  
Northern Portion

New records are provided for Stereomastis pacifica (Faxon, 1893) off the west coast of the northern portion of the Baja California Peninsula. Including previous records obtained during the TALUD survey and by other authors, this species is now known from a total of 12 localities along the Baja California Peninsula.

Early Holocene Juniper Woodland and Chaparral Taxa in the Central Baja California Peninsula, Mexico

2002 ◽  
Vol 57 (1) ◽  
pp. 102-108 ◽  
Author(s):  
David Rhode
Keyword(s):  
San Francisco ◽  
Baja California ◽  
Winter Precipitation ◽  
Early Holocene ◽  
Baja California Peninsula ◽  
Baja California Sur ◽  
Relict Populations ◽  
Juniper Woodland ◽  
Present Distribution ◽  
Fossil Records

AbstractA packrat midden located in the Sierra San Francisco, Baja California Sur, Mexico, dating to ca. 10,200 14C yr B.P., contains remains of California juniper (Juniperus californica) and other taxa now associated with southern California chaparral. California juniper does not occur in the Sierra San Francisco today, although “relict” populations of a few chaparral taxa still occur at higher elevations. This midden record documents the early Holocene occurrence of Baja California coniferous woodland and chaparral vegetation far south of its present distribution or its previously known extent from other fossil records. Based on modern climatic tolerances of California juniper and other taxa, central Baja California experienced a mild Mediterranean-type climate at least 5°–6°C cooler than the climate of today, with at least twice the winter precipitation the region now receives.

Helminth parasites of some freshwater fishes from Baja California Sur, Mexico

Zootaxa ◽  
2010 ◽  
Vol 2327 (1) ◽  
pp. 44 ◽  
Author(s):  
Oscar Méndez ◽  
Guillermo Salgado-Maldonado ◽  
Juan Manuel Caspetamandujano ◽  
Guillermina Cabañas-Carranza
Keyword(s):  
Freshwater Fish ◽  
Introduced Species ◽  
Fish Species ◽  
Baja California ◽  
Parasite Species ◽  
New Records ◽  
Helminth Parasites ◽  
Baja California Sur ◽  
Poeciliid Fish ◽  
Bodies Of Water

Nine freshwater fish species were sampled from 13 bodies of water in Baja California Sur state, on the Baja California peninsula, Mexico. Twenty-four helminth parasite species of 19 genera and from 13 families were recorded. All are new records for the region, but have been recorded previously in Mexico. No endemic helminth species were identified. Most helminths were larval forms of generalist Nearctic species transported by ichthyophagous birds, in addition to five anthropogenically introduced species. Poeciliid fish are the most widely distributed in the oases and other waters of Baja California Sur, and their helminths are the most common on the peninsula.

scholarly journals Susceptibility of pepper weevil (anthonomus eugenii cano) (coleoptera: curculionidae) to seven insecticides in rural areas of Baja California Sur, México

2008 ◽  
Vol 24 (3) ◽  
Author(s):  
Rosalía Servin-Villegas ◽  
José L. García-Hernández ◽  
Armando Tejas-Romero ◽  
José L. Martínez-Carrillo ◽  
M. A. Toapanta
Keyword(s):  
Rural Areas ◽  
Baja California ◽  
Field Population ◽  
Baja California Peninsula ◽  
Baja California Sur ◽  
Anthonomus Eugenii ◽  
Azinphos Methyl ◽  
Pepper Weevil ◽  
The Difference ◽  
Agricultural Areas

The susceptibility of the pepper weevil (Anthonomus eugenii), collected from Baja California Sur, Mexico, to seven insecticides was determined. Acontact, residual exposition method was used to obtain the lethal concentrations fifty (LC50) and the diagnostic concentration (LC95) of organophosphates (OF), carbamates (CA), pyrethroids (PIR), and organochlorine (OC) insecticides used to control pepper weevils from two agricultural areas (Los Planes and Todos Santos) in Southern Baja California Peninsula, as well as on a pepper weevil population not exposed to insecticides (PWIF) for two years. The highest LC50’s were obtained for methomyl (CA) and oxamyl (CA), followed by methamidophos (OF), endosulfan (OC), cyfluthrin (PIR) and azinphos-methyl (OF). The lowest LC50’s were observed for carbaryl (CA). The field population from Todos Santos showed lower susceptibility than the population from Los Planes to insecticides as methomyl, oxamyl, and carbaryl, while with methamidophos, azinphos-methyl, and cyfluthrin, the LC50 showed higher values. The PWIF population presented the lowest LC50 values of all three populations tested. However, in most cases, the difference was not significant in relation to the two field populations, thus the PWIF population needs to be kept free of insecticides for longer periods to establish a susceptibility baseline for Anthonomus eugenii.

scholarly journals VERIFICATION AND VALIDATION OF MANGROVE PRESENCE IN THE CENTRAL PORTION OF THE EAST COAST OF THE BAJA CALIFORNIA PENINSULA, MEXICO

2015 ◽  
Vol 30 (2) ◽  
pp. 61
Author(s):  
Francisco O. López -Fuerte ◽  
Mónica G. Rivera ◽  
Gabriela Cruz -Piñón
Keyword(s):  
Baja California ◽  
East Coast ◽  
Avicennia Germinans ◽  
Verification And Validation ◽  
Central Portion ◽  
Baja California Peninsula ◽  
Laguncularia Racemosa ◽  
Baja California Sur ◽  
Santa Ana ◽  
San Carlos

Verificación y validación de la presencia de manglar en la porción central de la costa oriental de la Península de Baja California, México Para verificar y/o validar la existencia de manglar en cuatro localidades de la porción central de la costa oriental de Baja California Sur, se realizó un recorrido en lancha desde la laguna costera San Lucas (27⁰ 14.8´ N; 112⁰ 12´ O) hasta el estero San Carlos (27° 42ʹ 13ʺ N, 112° 38ʹ 24ʺ O). Se verificó la ausencia de manglar en Campo Camacho, Santa Ana y San Carlos. La laguna costera San Lucas fue la única con presencia de manglar y los parámetros estructurales de este manglar indican tipologías de manglares de borde y enanos, los cuales se encontraron formando franjas paralelas a la línea de costa de entre 5 y 25 m de ancho. La cobertura total estimada mediante la digitalización de imágenes satelitales fue de 50 ha, lo que representó el 11% de la extensión de la laguna. La especie dominante fue Rhizophora mangle con el 44% de cobertura y altura promedio de 2.08 m (DE ± 0.41) con un intervalo de altura de 1.60–2.80 m, seguida por Avicennia germinans con 36% de cobertura, altura promedio de 2.4 m (DE ± 0.94) y un intervalo de 0.20–3.5 m y por último, Laguncularia racemosa con el 20% de cobertura, altura promedio de 2.40 m (DE ± 0.41) y un intervalo de 1.90–3 m.

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