Two specimens of Lissothuria antillensis Pawson, 1967 were collected at 2 localities from the Gulf of Mexico, Isla Verde and Tuxpan Reef, Veracruz, Mexico. This species had been reported previously only from the Caribbean Sea.

Current velocity data in the Southern Bay of Campeche, Gulf of Mexico, were obtained from March 1997 to May 1997, in order to compute tidal ellipses and phase lags in the region. Tidal ellipses and phase lags were calculated via…

The morphology of 33 species of Ceratium (38 including infraspecific taxa) was studied based on about 600 phytoplankton net samples taken from May 2005 through March 2008 at eight sampling stations in the northwestern part of the National Park Sistema…

Descriptions of 21 red algal species collected in March and November 2008 and June 2010 are given. They are considered new records for Cabezo reef in the southeastern part of the National Park Sistema Arrecifal Veracruzano (NPSAV), southwestern Gulf of…

The presence of a member of the genus Heterobothrium is described for the first time from the coast of Yucatán Peninsula, southeastern Mexico. Heterobothrium lamothei n. sp. is recorded parasitizing the gills of the tetraodontid fish Sphoeroides testudineus (Linnaeus, 1758)…

Anthropogenic disturbances may affect the development and maintenance of coral reefs by promoting diseases and other syndromes. In turn, this may cause local decreases in coral species diversity. In this study, we compared the prevalence of syndromes (including diseases and…

We report a detailed archeomagnetic investigation on pre-Columbian potteries from Quiahuiztlan, Veracruz, from ~900 AD to 1521 AD. Archeological samples analyzed by modern magnetic techniques carry a stable univectorial thermoremanent magnetization under alternating field treatment. Continuous low-field susceptibility vs. temperature…

The morphology of 46 species of Protoperidinium was studied based on 510 phytoplankton net samples taken from May 2005 through February 2007 at 7 stations in the northwestern part of the National Park Sistema Arrecifal Veracruzano, southern Gulf of Mexico.…

In order to evaluate the risk for marine ecosystem and human health, the diversity and morphology of diatoms of the genus Pseudo-nitzschia were studied. Weekly sampling was performed at seven geo-referenced sites in the National Park Sistema Arrecifal Veracruzano, SW…

Twenty three surface sediment samples were collected in the area surrounding the Isla de Sacrificios located in the southwestern Gulf of Mexico. The temporal impact of natural discharges in the area was evaluated through the study of the textural and…