2013
DOI: 10.1590/s0073-47212013000400009
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Abstract: ABSTRACT. The spider Latrodectus mirabilis (Holmberg, 1876) is commonly found in cereals crops of central Argentina. We studied its diet composition at the field and capture rate on leaf-cutting ants based on laboratory experiments. This study comprises the first approach that documents the diet of L. mirabilis in wheat and oat fields of central Argentina. We identified 1,004 prey items collected from its webs during the last phenological stages of both cereal crops. The prey composition was variable but the s… Show more

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Cited by 3 publications
(2 citation statements)
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References 30 publications
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“…followed by Coleoptera (33.5%). These results are consistent with previous works on Latrodectus species whose diet was composed mainly of ants, like L. pallidus (Shulov & Weissmann, 1959), L. mactans (75% of the total prey items) (Nyffeler et al, 1988) and L. mirabilis (>86%) (Pompozzi et al, 2013). Nevertheless, Coleoptera and Isopoda were the most frequent prey orders in the diets of L. lilianae and L. geometricus, representing 65-82% and 47.64% of the (B A = 0.146), a trophic category which includes species with generalized adaptations and with a narrow diet breadth in which predominates a certain taxon (Pekár & Toft, 2015).…”
Section: Discussionsupporting
confidence: 93%
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“…followed by Coleoptera (33.5%). These results are consistent with previous works on Latrodectus species whose diet was composed mainly of ants, like L. pallidus (Shulov & Weissmann, 1959), L. mactans (75% of the total prey items) (Nyffeler et al, 1988) and L. mirabilis (>86%) (Pompozzi et al, 2013). Nevertheless, Coleoptera and Isopoda were the most frequent prey orders in the diets of L. lilianae and L. geometricus, representing 65-82% and 47.64% of the (B A = 0.146), a trophic category which includes species with generalized adaptations and with a narrow diet breadth in which predominates a certain taxon (Pekár & Toft, 2015).…”
Section: Discussionsupporting
confidence: 93%
“…The most abundant order was Hymenoptera (58.9%) Additionally, we found that other predators such as mantids, scorpions, solpugids and other spiders are included in the black widow diet. These results support other works that found intraguild predation, often of immature prey stages, in generalist predators (Polis, 1988) and even in Latrodectus species (Shulov, 1940;Shulov & Weissmann, 1959;Nyffeler et al, 1988;Hódar & Sánchez-Piñero, 2002;Salomon, 2011;Pompozzi et al, 2013). In this way, potential competitors are eliminated, although there are risks of being killed by the prey.…”
Section: Discussionsupporting
confidence: 91%