Diet and microhabitat use by juveniles Rhinella ornata (Anura, Bufonidae) in an insular Brazilian Atlantic Rainforest area

Flynn, C. N.; Araujo, Pablo G.; Rocha, Carlos Frederico Duarte

doi:10.1590/1519-6984.236597

Cited by 2 publications

(1 citation statement)

References 9 publications

(10 reference statements)

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“…The trophic ecology of species within the Bufonidae has been widely studied throughout the world (e.g. Evans & Lampo, 1996, Sabagh and Carvalho-e-Silva, 2008, Duré et al, 2009, Maia-Carneiro et al, 2013, Flynn et al, 2021, primarily suggesting that this group is made up of active foragers that search for and eat small, slow-moving but highly aggregated prey, such as ants and termites (Toft, 1980(Toft, , 1981. However, the feeding strategy of Bufonidae remains controversially discussed (Sabagh and Carvalho-e-Silva, 2008) with some authors classifying them as antspecialists (Toft, 1980;Isacch & Barg, 2002) and others classify them as generalists (Smith & Bragg, 1949;Evans & Lampo, 1996).…”

Section: Introductionmentioning

confidence: 99%

Generalist, selective or ‘mixed’ foragers? Feeding strategies of two tropical toads across suburban habitats

Petrozzi¹,

Akani

Eniang

et al. 2021

Journal of Zoology

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Suitable habitats for anurans can be found in the ever-growing tropical urban environments but anurans' adaptations to urban conditions, including their trophic ecology remain largely unknown. We studied the food habits of two generalist, widespread West African Sclerophrys adult toads: African common (Sclerophrys regularis) and Hallowell's toad (Sclerophrys maculata). The first was studied in Lomé (Togo), Cotonou (Benin) and Ikeja (Nigeria), and the second in Port Harcourt and Ikeja (both Nigeria); the latter city represents the only studied sympatric occurrence. Mean dietary overlap between population pairs was relatively high, and diet composition of the two species when sympatric did not differ significantly. Food niche width was significantly positively correlated with local rainfall in both species, and diet composition changed significantly between the dry and wet seasons. Diversity metrics revealed that females had a more diversified diet, with higher evenness and lower dominance index values than males. The diet of both species was not correlated to prey type availability, in both the wet and dry season. Both toad species targeted specific food items rather than opportunistically consume prey as observed in most anurans which may be a response to high anuran diversity typically found in the tropics or an adjustment to urban habitats.

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