New Record of Carcharhinus Leucas in an Amazonian River System

Elasmobranchs exhibit the biggest population declines among vertebrates, being considered one of the groups with the highest risk of extinction. The Brazilian Amazon Coast (BAC) is considered a priority area for elasmobranch conservation, as many species are endemic to the region, and most of them are threatened with extinction. The present study made a scientometric analysis using the IRAMUTEQ method (Interface de R pour les Analyses Multidimensionnelles de Textes et de Questionnaires) to evaluate the trends of research with elasmobranchs in BAC in the last four decades. Ten research trends were identified, highlighting “Biodiversity”, “Reproduction”, “Trophic Ecology” and “Conservation”. However, most of the publications found are aimed at understanding the diversity and abundance of species in the region, with the number of studies focused on reproduction, feeding and other aspects of the biology and ecology of elasmobranchs in the BAC being less expressive. Although the research area “Conservation” stood out in the search, the amount of relevant information so that management and conservation measures can be implemented is still low. Lastly, despite following the global trend of studies with elasmobranchs between 2000 and 2010, investigations into the BAC need to advance, especially considering the poor level of basic information on most species (Biology and population dynamics) and the incomplete knowledge of specific composition of elasmobranch species in the entire area, aspects relevant to conservation and more applied studies that rely on more recent methodologies and technologies.

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Research trends on elasmobranchs from the Brazilian Amazon Coast: a four-decade review

Coelho

Lima

Wosnick

et al. 2021

Biota Neotrop.

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Synopsis of global fresh and brackish water occurrences of the bull shark Carcharhinus leucas Valenciennes, 1839 (Pisces: Carcharhinidae), with comments on distribution and habitat use

Gausmann¹

2021

Integrative Systematics: Stuttgart Contributions to Natural His

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No. WC Toponym Country (State) References LHS Comments F Neuse River [35.10°N, -76.50°E] USA (NC) schwartz (1995, 1997, 2012); southern fried science (2011); BanGley et al. (2018a, 2018b) Juv Ad Tributary of the Pamlico Sound (No. 9). schwartz (1995) reported C. leucas at New Bern in summer F Cape Fear 14 inteGrative systematics No. WC Toponym Country (State) References LHS Comments F Pearl River-System [30.18°N, -89.57°E]

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New Record of Carcharhinus Leucas in an Amazonian River System

Cited by 2 publications

References 11 publications

Research trends on elasmobranchs from the Brazilian Amazon Coast: a four-decade review

Research trends on elasmobranchs from the Brazilian Amazon Coast: a four-decade review

Synopsis of global fresh and brackish water occurrences of the bull shark Carcharhinus leucas Valenciennes, 1839 (Pisces: Carcharhinidae), with comments on distribution and habitat use

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