Beetles parasitized by the mite Leptus lomani in coastal dunes of Puerto Madryn city, Chubut, Argentina
; Cédola, Claudia Viviana ; del Rio, Maria Guadalupe Otros responsables
Fecha
Publicador:
Consejo Nacional de Investigaciones Científicas y Técnicas
Fecha de depósito:
18/09/2025
Fecha de creación:
16/9/2025
Clasificación temática
Palabras clave
Resumen
El presente set de datos es parte de un trabajo científico donde se informa por primera vez sobre la asociación entre las larvas del ácaro Leptus lomani Oudemans y cinco especies de escarabajos de dos de las familias más abundantes y ecológicamente relevantes del noreste de la Patagonia, Curculionidae y Tenebrionidae. Este hallazgo representa el primer registro de una especie de Leptus que parasita escarabajos de la familia Curculionidae en América, y el segundo en Tenebrionidae. Además, se trata del primer registro de L. lomani asociado con coleópteros. Este hallazgo es relevante dado que L. lomani puede transmitir bacterias a sus hospedadores, causar su muerte y así afectar a los servicios ecosistémicos que estos coleópteros desempeñan.
Métodos
During a routine entomological sampling to assess the abundance of adult Tenebrionidae beetles Nyctelia circumundata Lesne (Pimeliinae: Nycteliini), and Emmallodera crenaticostata crenaticostata Blanchard (Tenebrioninae: Scotobiini) in the coastal sand dune system in front of the city of Puerto Madryn (42º47'33''S, 64º57'42''W, 23 m a.s.l.), Chubut, Argentina, positive observations regarding the presence of the ectoparasite mite Leptus sp on both beetle species were made. These coastal sand dune ridges have an aeolian origin, and are developed on paleomarine deposits and modern sediments, where the dominant vegetation cover is herbaceous accompanied by small shrub patches. Entomological samplings were performed using pitfall traps (live capture), arranging 40 traps in four transects of 10 pitfalls each. Pitfall samplings were conducted three times during the warm season of 2023-2024 year, on early spring, late spring, and late summer. In each sampling event, traps were inspected daily over seven consecutive days. Both the total number of N. circumundata, and E. crenaticostata crenaticostata individuals caught, and the number of specimens with mites attached in each sampling event was recorded. Since pitfall sampling was conducted as part of a capture–recapture experiment to estimate the survival of N. circumundata and E. crenaticostata crenaticostata, only five parasitized individuals of each species were collected (and preserved in 70% ethanol) to identify the mite species parasitizing them, in order not to affect the results of that study. Additionally, as a complementary sampling method, visual inspections of the soil, shrubs, and other occasional refuges were conducted looking for other parasitized coleopteran species. All coleopteran specimens observed with mites attached during visual inspections were collected and preserved in 70% ethanol. In the laboratory, mites were removed from host whit a fine brush, and cleared in lactophenol for identification. Then mites were mounted on a semi-permanent slide in Hoyer’s medium and they were identified using specific keys. Voucher specimens, mites and coleopteran species, were deposited in the Entomological Collections of the IPEEC (CCT CONICET CENPAT) and in the Museo de La Plata, Argentina.
Condiciones de uso
Las buenas prácticas científicas esperan que se otorgue el crédito adecuado mediante una citación. Utilice un formato de citación y aplique estas normas de reutilización:
Licencia Creative Commons
Excepto donde se indique lo contrario, la licencia de este ítem se describe como by-nc-sa
Archivos
ARCHIVO
NOTAS DE USO
TAMAÑO
Figure_1.tif
Figure showing: (a) Geographic location of Puerto Madryn city (Chubut, Argentina); (b) Coastal sand dune system in front of Puerto Madryn, where beetle species parasitized by L. lomani were detected.
1.06 MB
Figure_2.tif
Figure showing beetle species parasitized by L. lomani detected in the coastal sand dune system in front of Puerto Madryn (Chubut, Argentina): (a) Puranius sp. (Curculionidae); (b) Strangaliodes mutuarius (Curculionidae); (c) Scotobius pilularius (Tenebrionidae); (d) Nyctelia circumundata (Tenebrionidae); (e) Emmallodera crenaticostata crenaticostata (Tenebrionidae); (f) live specimen of Leptus lomani detached from its host during handling; (g) live specimen of Leptus lomani attached to its host in the coxal cavity of E. c. crenaticostata.
1.46 MB
Beetles_parasitized_by_the_mite_Leptus_lomani_in_coastal_dunes_of_Puerto_Madryn_city.xlsx
Tables with: 1-Beetle species parasitized by the mite Leptus lomani, their taxonomic affiliation, number of mites carried, and geographic coordinates of the collection site. 2- Tenebrionid beetles captured by pitfall trapping (early spring, late spring, and late summer) in the coastal sand dune system in front of the city of Puerto Madryn (Chubut, Argentina). 3- The number of parasitized and non-parasitized specimens, as well as the incidence rate, are detailed. Location of L. lomani attached host body. The Roman numeral in parentheses denotes on which hosts leg the mite was located.
11.93 KB