Besides its extreme climate conditions, the Caatinga (a type of tropical seasonal forest) hosts an impressive faunal and floristic biodiversity. In the last 50 years there has been a considerable increase in the number of studies in the area. Here we aimed to present a review of these studies, focusing on four main fields: vertebrate ecology, plant ecology, human ecology, and ethnobiology. Furthermore, we identify directions for future research. We hope that the present paper will help defining actions and strategies for the conservation of the biological diversity of the Caatinga.

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ABSTRACT. Spatio-temporal distribution and reproductive success of Eretmochelys imbricata on the beaches of Ipojuca, Pernambuco, Brazil. This study aimed to verify the spatio-temporal distribution of Eretmochelys imbricata (Linnaeus, 1766) and aspects of its reproductive biology, such as incubation time, reproductive success, biometric measurements of females, number of nests and fecundity. Data were collected during 2007 to 2010, on the beaches of Muro Alto, Cupe, Merepe, Porto de Galinhas, and Maracaípe, all of them located in the city of Ipojuca, state of Pernambuco, Brazil. Parameters relating to reproductive biology and nesting areas of the species were comparatively analyzed. Eretmochelys imbricata was recorded nesting between October and May, when 350 nests were monitored through three seasons. The spawning peak happened from January to March, also revealing a seasonal pattern. The number of nests differed significantly between seasons. The Merepe beach presented an elevated occurrence of nests (46 nests/km) if compared to the other monitored beaches. On the aspects of reproductive biology, the reproductive success was 65,6% and the incubation time interval ranged from 54 to 56 days. Biometric measurements were collected from 59 specimens, resulting in an average of 92,5 cm ± 4,5 for the curved carapace length, and of 83,4 cm ± 5 for the curved carapace width. The results can be used for subsidize conservation plans and demonstrate that the beaches recorded in this study are relevant as nesting areas for E. imbricata. KEYWORDS.Hawksbill turtle, seasons, reproduction, ecology, Testudine. RESUMO.Este estudo objetivou verificar a distribuição temporal e espacial de Eretmochelys imbricata (Linnaeus, 1766) e aspectos de sua biologia reprodutiva, tais como tempo de incubação, sucesso reprodutivo, biometria das fêmeas, número de ninhos e fecundidade. Os dados foram coletados de 2007 a 2010 nas praias de Muro Alto, Cupe, Merepe, Porto de Galinhas e Maracaípe, todas elas localizadas no município do Ipojuca, estado de Pernambuco, Brasil. Foram analisados comparativamente parâmetros relativos à biologia reprodutiva e áreas de nidificação da espécie. Eretmochelys imbricata foi registrada nidificando entre os meses de outubro a maio, totalizando 350 ninhos monitorados em três temporadas. Os picos de desova ocorreram de janeiro a março, revelando um padrão sazonal das desovas. Houve diferença significativa entre o número de ninhos nas temporadas. A praia de Merepe apresentou uma ocorrência elevada de ninhos (46 ninhos/km) em relação às demais praias monitoradas. Quanto aos aspectos da biologia reprodutiva, o sucesso reprodutivo foi 65,6%, e o intervalo do tempo de incubação de 54 a 56 dias. As medidas biométricas foram coletadas de 59 espécimes, e apresentaram média de 92,5 cm ± 4,5 para o comprimento curvilíneo da carapaça e de 83,4 cm ± 5 para a largura curvilínea da carapaça. Os resultados podem ser utilizados para subsidiar planos de conservação e demonstram que as praias registradas neste estudo têm relevância co...

Wade Davis's study of Haitian “zombification” in the 1980s was a landmark in ethnobiological research. His research was an attempt to trace the origins of reports of “undead” Haitians, focusing on the preparation of the zombification poison. Starting with this influential ethnopharmacological research, this study examines advances in the pharmacology of natural products, focusing especially on those of animal-derived products. Ethnopharmacological, pharmacological, and chemical aspects are considered. We also update information on the animal species that reportedly constitute the zombie poison. Several components of the zombie powder are not unique to Haiti and are used as remedies in traditional medicine worldwide. This paper emphasizes the medicinal potential of products from zootherapy. These biological products are promising sources for the development of new drugs.

Few data are available on the predation of amphibians, reptiles, and mammals by the fringe-lipped bat Trachops cirrhosus (Chiroptera: Phyllostomidae: Phyllostominae), in particular in Brazil, where ecological studies of this species are still incipient. This study presents an overview of the data available in the literature on the composition of the diet of T. cirrhosus, including data from a semiarid region. The first records of the predation of the anurans Corythomanthis greeningi (Hylidae), Pleurodema diplolister (Leiuperidae), Proceratophrys cristiceps (Cycloramphidae), Dermatonotus muelleri (Microhylidae), Pipa carvalhoi (Pipidae), Leptodactylus sp. (Leptodactylidae), the lizards Vanzosaura rubricauda (Gymnophytalmidae), Hemidactylus mabouia (Gekknonidae), and a rodent of the family Cricetidae are reported. Insects (33%) constitute the principal component of the diet of T. cirrhosus, while anuran amphibians contributed 23% of the items recorded, followed by birds (14%), mammals (10%), lizards (8%), and invertebrates (8%). This diversity of prey is typical of a generalist predator, which is relatively unaffected by seasonal fluctuations in the availability of prey. This is especially important in the semi-arid Caatinga biome, which is subject to prolonged periods of drought that result in a shortage of feeding resources.

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Resumo -O conhecimento da história natural das espécies brasileiras de cágados e tartarugas ainda é bastante incipiente, visto que a maior parte das informações sobre esses animais se restringe aos poucos registros de ocorrência, que em geral encontram-se esparsos na literatura ou mesmo em museus. Essa escassez de conhecimento dificulta abordagens mais amplas sobre vários aspectos ecológicos e evolutivos primordiais em planos de conservação e manejo para esse grupo. A grande extensão geográfica, complexidade ambiental e degradação dos biomas no Nordeste fazem com que a sistematização dos dados ambientais e biológicos sobre os quelônios da Região, compilados e discutidos neste trabalho, sejam de suma importância para a caracterização do estado de conservação dessas espécies e, por consequência, auxiliem a subsidiar o diagnóstico dos ambientes associados. Palavras-chave adicionais: conservação, Cryptodira, Pleurodira, quelônios, Sauropsidas.Abstract (Geographical distribution and ecological considerations on the Testudines fauna from Northeast Brazil) -The knowledge of natural history of the Brazilian species of turtles is still insipient because most information about these animals are restricted to a few records of occurrence, which in general are sparse in the literature or even in museums. The paucity of knowledge hinders broader approaches on various ecological and evolutionary aspects, which are primordial for conservation planning and management of the group. The large geographical extent, the environmental complexity, and the degradation of biomes in Northeast Brazil make the systematization of environmental and biological data on turtles from this region, which are compiled and discussed in this paper, highly important to contribute to the characterization of the conservation status of these species and therefore to subsidize the diagnosis of the environments associated to them.

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