Results: 117

Spatial and temporal distribution of gerrid (Heteroptera) and predation on microcrustaceans from a tropical shallow lake

Braz. j. biol; 77 (2), 2017
Abstract Predator-prey interactions involving an aquatic insect and zooplanktonic prey of different sizes were investigated to quantify prey mortality exposed to predators. Laboratory experiments were undertaken with the young and adult gerrid Rheumatobates crassifemur to test predation and size selectiv...

Abundance of the reef-building Petaloconchus varians (Gastropoda: Vermetidae) on intertidal rocky shores at Ilha Grande Bay, southeastern Brazil

An. acad. bras. ciênc; 89 (2), 2017
ABSTRACT The reef-building vermetid Petaloconchus varians occurs in the western Atlantic Ocean, from the Caribbean Sea to the southern coast of Brazil. The present study evaluated the abundance of P. varians on intertidal rocky shores in Ilha Grande Bay (Rio de Janeiro State), and characterized their ree...

Occurrence of Dendrocephalus brasiliensis Pesta, 1921 (Crustacea, Anostraca) in the Caras river, southern Ceara, Brazil

An. acad. bras. ciênc; 89 (2), 2017
ABSTRACT Occurrence of Dendrocephalus brasiliensis Pesta, 1921 (Crustacea, Anostraca) in the Caras river, southern Ceara, Brazil. The specimens were collected in March and April 2014. The new occurrence extends the distribution and update area of occupancy of the species, which is characterized by a spec...

Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species

An. acad. bras. ciênc; 89 (2), 2017
ABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, growth, l...

Contribution to the knowledge of pathogenic fungi of spiders in Argentina: Southernmost record in the world

Rev. argent. microbiol; 49 (2), 2017
The aim of this study was to identify entomopathogenic fungi infecting spiders (Araneae) in a protected area of Buenos Aires province, Argentina. The Araneae species identified was Stenoterommata platensis. The pathogens identified were Lecanicillium aphanocladii Zare & W. Gams, Purpureocillium lilacinum...

Distribution of the deep-sea genus Bathypterois (Pisces: Ipnopidae) in the Eastern Central Pacific

Rev. biol. trop; 65 (1), 2017
Abstract:The genus Bathypterois (tripod fish) comprises 19 species of deep-sea fishes distributed worldwide. The biology and distribution of the species of this genus are relatively poorly known throughout the Eastern Central Pacific (ECP). This work aims to update the geographic and bathymetric distribu...

The influence of habitat structure on fish assemblages in Amazonian streams of Machado river basin

Rev. biol. trop; 65 (1), 2017
Abstract:Igarapés are Amazonian streams that are extremely susceptible to environmental changes. Due to the rapidly occurring riparian land use changes, and the several impacts these may have on fish assemblages, it is highly valuable to describe and understand the current relationships between these as...

Distribución y abundancia del pez león Pterois volitans (Scorpaeniformes: Scorpaenidae) y especies nativas asociadas en el Parque Marino Cayos de San Felipe, Cuba

Rev. biol. trop; 65 (1), 2017
ResumenEl primer avistamiento del pez león en el Parque Nacional "Cayos de San Felipe" en el 2009 podría amenazar la diversidad de sus ecosistemas marinos y la capacidad de brindar servicios. Para analizar la incidencia de la invasión del pez león en el área, se realizó un muestreo anual entre 2013...

Some intertidal and shallow water polychaetes of the Caribbean coast of Costa Rica

Rev. biol. trop; 65 (1), 2017
Abstract:The polychaete fauna of the Caribbean coast of Costa Rica has been inadequately characterized with only nine species previously reported. Collections of polychaetes from intertidal coralline rocks and several shallow sub-tidal sites on the Caribbean coast of Costa Rica have been examined and 68 ...

Distribución y abundancia espacial y temporal de Stomolophus meleagris (Rhizostomae: Stomolophidae) en un sistema lagunar del sur del Golfo de México

Rev. biol. trop; 65 (1), 2017
ResumenLas escifomedusas se alimentan principalmente de crustáceos microscópicos, huevos y larvas de peces, moluscos y de otras medusas. La distribución y abundancia de la escifomedusa tiene una importancia económica y ecológica ya que son depredadores que influyen en la dinámica poblacional de otr...