Abstract Mangroves are highly productive environments that play important ecological and socioeconomic roles; however, they have been impacted to different degrees in most countries worldwide. The knowledge of which organisms inhabit this environment their interactions is the first step towards its conservation. natural variability environmental factors mangroves provides numerous niches available species. Meiofauna patchy patterns distribution related availability resources. Hence,...

Intertidal meiofauna were collected from various locations around the Pina Basin, Recife, Brazil. The basin is a shallow restricted environment which receives large quantities of untreated sewage, and therefore polluted, eutrophic hypoxic. identified to major taxa (nematodes, copepods, polychaetes, oligochaetes, turbellarians, gastrotrichs, rotifers, ostracods, acari, juvenile amphipods bivalves) counted. Subsamples nematodes extracted level genus. nematode community structure was typical...

In deep-sea sediments from Campos Basin two new species of Spirinia were found. lara sp. n. is mainly characterized by the presence paired somatic papillae linked to gland cells and distributed all over body while sophia possesses an irregular distribution these glandular papillae.

A new species of Daptonema is described based upon morphological characters and 18S rRNA sequence. matrona sp. nov. was collected in Pina Basin (north-eastern Brazil). It differs from all other the genus by presence reduced cephalic setae straight spicules. These features require an adaptation generic diagnosis. Moreover, females are characterized intra-uterine development offspring, considered herein as their major autapomorphic feature. Molecular systematic analyses supported a distinct...

Spatial variations and organism–sediment relationship are paramount subjects of soft-bottom ecology. However, these issues have been unexplored for most minor meiofaunal taxa such as tardigrades. In the present study, we explore this subject on a small tropical (~6°S) estuary. Total abundance ranged from 4 to 1036 individuals per 10cm2, averaging (mean±s.d.) 324.8±245.9 10cm2. Nematodes dominated in both seasons, representing >70% total abundance. Tardigrades were second-most abundant...

A new species Spirinia elongata sp. nov., is described from the Pina Basin a hypereutrophic estuary on coast of Pernambuco state (Brazil). The belongs to Desmodoridae and distinguished all known valid genus by presence two dorsal teeth one ventral tooth.

Summary Brazil has one of the largest varieties aquatic ecosystems and rich freshwater biodiversity, but these components have constantly been damaged by expansion unsustainable activities. Free-living nematodes are an abundant ubiquitous component continental benthic communities, occurring in all habitats, including extreme environments. Despite this, hardly any studies examined generic composition different latitudes geographic overlap assemblages. We provide data on nematode genera from...

A new species of a free-living marine nematode found in Brazil is described: Trileptium ribeirensis sp. nov. The type material deposited the Nematoda collection Museu de História Natural da Bahia, located at Universidade Federal Bahia. includes eleven valid nematodes that have teeth and jaws positioned forward. was collected with help corers (3.5 cm diameter 30 long) on sandy beach This distinguished from its congeners based combination characters male (cuticle, buccal cavity, supplement...

Abstract Aim The Brazilian tropical semiarid is a biome with small freshwater ecosystems, often intermittent, acting as mosaic in constant transformation between dry and rainy seasons. Meiobenthic communities play crucial roles these environments, understanding their colonization succession processes essential to comprehend how organisms’ structure defaunated habitat. In addition the traditional taxonomic approach, functional traits provide valuable insights into dynamics of processes. this...

Populações de Batillipes pennaki Marcus, 1946 integrantes da meiofauna 3 estações em zona intermareal margem Sul ilha Itamaracá, litoral norte Pernambuco, localizadas entre 340 e 34o 52’ W 70 49’ S foram prospectadas, a fim se estimar suas variações espaço-temporais . O material bio-sedimentológico foi coletado por um ano cada meses durante as preamares baixa-mares.Valor máximo densidade ocorreu no médio-litoral superior arenoso preamar. Detectou-se ainda gradiente populacional negativo...

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Abstract: Aim This study reports the occurrence of five Nematoda genera previously considered as exclusively marine in inland waters. Methods Sediment samples were taken, weekly, during nine weeks, at a small spring Horto Florestal Olho D’Água da Bica, Cuité, PB, ca. 130 km away from shoreline, between March and May 2016 fixed 4% formalin. Nematodes sorted by manual elutriation through sieves with 0.5 0.045 mm slides prepared. Results The sediment was classified coarse sand, organic matter...

Positron Emission Tomography (PET) has proven to be an effective diagnostic imaging modality for detecting metabolic alterations in brain disorders associated with neurodegenerative diseases, which often manifest before clinical symptoms become apparent. PET can provide early and accurate vivo diagnosis, helping, example, differentiate Alzheimer's disease from other forms of dementia guide treatment strategies. Moreover, is useful diagnosing, staging, monitoring the response malignant tumors...

Abstract The order Monhysterida is highly important to freshwater environments, containing a number of genera noted for their ability endure extreme environmental conditions, such as those found in semi‐arid regions. genus Monhystrella often cited references these present study was performed six reservoirs region Brazil, employing collection and identification techniques commonly used the phylum Nematoda. Sixteen pertaining were detected, although only all reservoirs, with monospecific...