The neonicotinoid imidacloprid impairs the predatory performance and functional response of the jumping spider Helpis minitabunda (Araneae, Salticidae)

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  The neonicotinoid imidacloprid impairs the predatory performance and functional response of the jumping spider Helpis minitabunda (Araneae, Salticidae) Abstract The neonicotinoid imidacloprid can cause lethal and sublethal effects in non-target organisms, including impaired behavior, reduced fertility, disrupted locomotion, and reduced predatory performance in arthropods. Spiders are among the most abundant arthropod predators in terrestrial ecosystems, including agricultural ecosystems, yet the effects of neonicotinoids on the predatory function of jumping spiders remain poorly understood. The functional response of a predator describes how predation rates change with prey density and is key to understanding predator–prey dynamics. We tested whether acute exposure to a commercial formulation of imidacloprid at field-recommended concentrations alters the functional response of the Aussie bronze jumping spider, Helpis minitabunda (L. Koch, 1880). We compared the predation of treat...

DISTRIBUCIÓN EN PANAMÁ DE Actinopus robustus (O. Pickard-Cambridge, 1892) (ARANEAE -ACTINOPODIDAE): MÁS ALLÁ DE LA LOCALIDAD TIPO

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DISTRIBUCIÓN EN PANAMÁ DE Actinopus robustus (O. Pickard-Cambridge, 1892) (ARANEAE -ACTINOPODIDAE): MÁS ALLÁ DE LA LOCALIDAD TIPO

ABSTRACT

An actualization of theknown distribution of Actinopus robustus(O.  Pickard-Cabridge,  1892)  within  Panama  is  reported  for  first  time  using museum  samples  stored  at  the  G.  B.  Fairchild  Invertebrate  Museum  of  the Universidad de Panamá. A total of five newlocalities is reported, together with the possible location at La Palma, in the province of Darien.

Garrido Trujillo,A., Díaz Quirós, D., Wilkie Wilson, E., Rivera, J.  A.y Ábrego  L.,  J.2024. Distribución  en Panamá    de Actinopus robustus    (O. Pickard-Cambridge) (Araneae-Actinopodidae):  Más  allá  de  la localidad tipo. Mesoamericana 26(1): 15-19