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The Mexican Republic is located between the geographical coordinates: 14° 32' 27" South, 32° 43' 06" North, 86° 42' 36" Southeast and 118° 27' 24" West. There are 17 coastal states: Baja California, Baja California Sur, Sonora, Sinaloa, Nayarit, Jalisco, Colima, Michoacán, Guerrero, Oaxaca, Chiapas, Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán and Quintana Roo; in such a way that the Mexican coast occupies an approximate surface of 1,020,965 km2, covering about 57.2% of the total surface of the territory. Climatic variability involves tropical to subtropical conditions; arid and semi-arid climates predominate in the north, and humid and sub-humid climates in the south. Approximately 37% of the territory corresponds to the sub-humid climate, which is present in the coastal plains of the Pacific, Gulf of Mexico and northeast of the Yucatan Peninsula. Genus Callinectes: Decapoda: Brachyura: Portunidae. Swimming crabs, wide distribution in the Atlantic and Pacific Ocean, life cycle with planktonic and benthic stages, ecological and economic importance. Pacific Ocean: C. arcuatus, C. bellicosus, C. toxotes; Gulf of Mexico: C. sapidus and C. rathbunae.
About the author
Licence en hydrobiologie de l'UAMI, Mexique, et maîtrise en éducation environnementale. Professeur-chercheur au département d'hydrobiologie de l'UAMI. Cofondateur du centre de documentation "Écosystèmes côtiers mexicains" (base de données bibliographiques sur les lagunes côtières mexicaines). Spécialiste de l'hydrologie, des nutriments et de la production primaire.
