Myxomycetes ocorrentes em áreas de caatinga e brejo de altitude no sertão de Pernambuco, Brasil

Abstract

RESUMO(Myxomycetes ocorrentes em áreas de caatinga e brejo de altitude no sertão de Pernambuco, Brasil). O bioma Caatinga, localizado na região semiárida brasileira, está distribuído em nove estados, incluindo Pernambuco. Os objetivos deste estudo foram: obter informações que contribuam para a compreensão da diversidade alfa e gama da microbiota da Caatinga; comparar a composição da mixobiota em áreas de caatinga situadas nos municípios de Serra Talhada (ST) e Mirandiba (M) com a encontrada em um enclave de floresta úmida (brejo de altitude) situado no município de Triunfo (T). Os espécimes foram coletados sobre restos lenhosos (173), folhedo (26), restos de plantas suculentas (3), casca de árvore viva (1) ABSTRACT(Myxomycetes from caatinga and brejo de altitude areas in the semi-arid region of Pernambuco, Brazil). The Caatinga biome, situated in the Brazilian semi-arid region, is distributed among the territories of nine states, including Pernambuco. The objectives of this study were: (1) to understand the alpha and gamma diversity of the Caatinga myxobiota; and (2) to compare the composition of the myxobiota present in two areas of typical xerophilous vegetation situated in Serra Talhada (ST) and Mirandiba (M) municipalities with an enclave of rain forest situated in the municipality of Triunfo (T). Specimens were collected on woody debris (173), litter (26), debris of succulent plants (3), bark of a living tree (1) and dung (1). Hemitrichia calyculata was the most abundant species (60 records). Other common species were Arcyria cinerea (20), Ceratiomyxa fruticulosa (19), A. denudata (16) and H. serpula (13), which were collected during dry and humid periods. An annotated list is presented with records of 37 species from 17 genera, seven families and five orders. Myxomycetes assemblages differed from each other: CC M/ST = 0.25, CC M/T = 0.06, CC ST/T = 0.39. The species/genus ratio was rather low in the caatinga and relatively high in the humid forest (S/G M = 1.0, S/G ST = 1.3, S/G T = 2.14). Specimen abundance and the total number of species (M = 4/4, ST= 26/12, T= 172/29) increased with increasing precipitation and altitude. Fuligo megaspora is reported for the first time for the Northeast Region and Didymium perforatum is a new record for Brazil.

Diversity of myxomycetes in an environmentally protected area of Atlantic Forest in northeastern Brazil

“…Hemitrichia calyculata is recorded for the five highland forests studied in the state of Pernambuco, and H. serpula is cited for the Baixa Verde and Madre de Deus forests, in the same state (Silva & Cavalcanti 1988;2012); Arcyria denudata occurs in the Serra dos Cavalos and Serra Negra forests in the municipality of Bezerros, also in Pernambuco, and A. cinerea is recorded only for the Serra dos Cavalos forest. Silva & Cavalcanti (1988) cite Perichaena depressa for the Madre de Deus forest (Tab.…”

“…In addition, a number of animal species, Coleoptera in particular, use the plasmodia and sporocarps of myxomycetes for foraging, reproduction and refuge from predators (Newton & Stephenson 1990). To date, only Silva & Cavalcanti (1988;2012) have offered information on species that occur in the highland forests of the state of Pernambuco, whereas Costa et al (2009; made the first records for the state of Paraíba.…”

Corticolous myxobiota of the Pernambuco Center of Endemism, Brazil

“…Cribraria violacea also produce small sporangia, and is very common on the cortex of living trees and, less frequently, on dead wood. In Brazil, this species has been recorded from almost all northeastern states, plus once in the South Region (Santa Catarina) and once in the Southeast Region (São Paulo), occurring as corticolous and lignicolous in the Atlantic Forest and Caatinga (Gusmão et al 2005;Silva & Cavalcanti 2010;Bezerra et al 2011;Silva & Cavalcanti 2012). Echinostelium minutum is known only from the Northeast (Alagoas, Bahia, Maranhão, Pernambuco) and…”

Predation of Leptodactylus macrosternum (Anura: Leptodactylidae) by the Fringe-lipped bat, Trachops cirrhosus (Chiroptera: Phyllostomidae) in southeastern Brazil

“…Al-i i i i though anurans are cited as common prey of the Fringe-lipped bat, Leal et al (2018) showed insects are the main item in the diet of T. cirrhosus, followed by amphibians. Silva (2007) also reports insects as the most frequent items on fecal samples of T. cirrhosus, followed by fruits and small vertebrates. These findings show that, although T. cirrhosus may be able to feed on frogs and small vertebrates, it is a generalist predator as other phyllostomines.…”