Distribución, densidad, proporción sexual y fecundidad de Belzebub faxoni (Decapoda, Luciferidae) en el Sistema Arrecifal Veracruzano, SO del Golfo de México

Abstract

:1 to 2 :1 . The main breeding season was recorded in May and June, which determined the distribution and abundance of B. faxoni. In addition, within the system, a changing in current direction may trigger changes in distribution. This is the first study of the population of B. faxoni in the SW Gulf of Mexico.]]>

Larvae and macro-crustaceans along the coastline of the Parque Nacional Sistema Arrecifal Veracruzano, SW Gulf of Mexico

“…The genera in Group B are extremely tolerant to changes in environmental factors (Williams, 1984), whereas the genera in Group C are purely marine and only slightly tolerant to variation in salinity and oxygen. Group D contains Brachyura zoeae genera and holoplanktonic organisms and they are positively correlated with the higher water surface temperature (Cházaro-Olvera et al, 2017). The presence of the first larval stages was also related to the reproductive season of many of the present stage-genera.…”

Population Structure and Seasonal Variability of two Luciferid Species (Decapoda: Sergestoidea) in the Western Gulf of Mexico

“…Despite being related species, abundance values registered by L. typus were between two or three orders of magnitude lower than those recorded by B. faxoni. Along the western Atlantic, high abundance values for B. faxoni were also found in the coastal waters of Texas [16], the southern Gulf of Mexico [19], Venezuela [34], and northern and southern Brazil [24,35,36]. The success of B. faxoni in plankton communities could be attributable to a short adult lifespan associated with a rapid turnover of generations and the protection of eggs until eclosion [5].…”

“…Upper circulation in the Gulf of Mexico is dominated by the Loop Current, a warm ocean current that enters the gulf through the Yucatan Channel and flows out through the Florida Straits. The Loop Current sheds large anticyclonic eddies (200 to 400 km) that move westward into the western gulf and eventually dissipate near the Mexican slope [19]. The time interval between eddy detachments from the Loop Current is highly variable, ranging from 3 to 17 months, but physical causes of the shedding process are not well understood [20,21].…”

“…Despite their ecological relevance, studies targeting luciferids in the Gulf of Mexico are very scarce. Some works refer to the distribution of species [16] and others to the population characteristics of B. faxoni [5,19]. This study jointly addresses the population ecology of B. faxoni and L. typus through the analysis of the factors affecting their distribution and the main population parameters in the neritic and oceanic waters of the Mexican western Gulf of Mexico.…”

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“…xoni presenta una amplia distribución en el océano Atlántico, desde Nueva Escocia, Canadá, hasta el Río Grande, Brasil (Cházaro-Olvera et al, 2017), y en relación con el ictioplancton, la distribución de Microdesmus carri se ha delimitado de manera general, del suroeste de México a Costa Rica (Froese & Pauly, 2020;Lara-Domínguez et al, 2011;McEachran & Fechhelm, 2005), por lo que este nuevo registro además puede representar el límite septentrional en su distribución. Así, de los 18 taxa reportados en el presente estudio como nuevos registros para la laguna La Mancha, solo dos casos representan una ampliación en su distribución geográfica (Leucon americanus y Microdesmus carri).…”