Interactions among shrimp and “catarina” clam fisheries at Magdalena Bay, Baja California Sur Mexico

2014 ◽  
Vol 88 ◽  
pp. 31-37 ◽  
Author(s):  
Miguel Ángel Ojeda Ruíz de la Peña ◽  
Mauricio Ramírez Rodríguez
Keyword(s):  
Baja California ◽  
Baja California Sur ◽  
Magdalena Bay

scholarly journals Feeding habits of Paralabrax nebulifer (Serranidae) during reproductive and non-reproductive seasons in an adjacent area to Magdalena Bay, Baja California Sur, Mexico

2021 ◽  
Vol 56 (2) ◽  
pp. 89-101
Author(s):  
Julio Alejandro Ysla-Guzmán ◽  
Xchel Gabriel Moreno-Sánchez ◽  
Martín Oscar Rosales-Velázquez ◽  
Víctor Carrasco-Chávez ◽  
José Luis Ortíz-Galindo
Keyword(s):  
Baja California ◽  
Feeding Habits ◽  
Feeding Strategy ◽  
Gonadosomatic Index ◽  
Reproductive Season ◽  
Hepatosomatic Index ◽  
Adjacent Area ◽  
Baja California Sur ◽  
Sardinops Sagax ◽  
Magdalena Bay

The barred sand bass Paralabrax nebulifer is a commercially important fish off the west coast of Baja California Sur. To assess the diet of this species and variations as a function of sex and reproductive condition, 60 specimens were captured using traps during seven seasonal sampling trips from August 2016 to August 2018 in an adjacent area to Magdalena Bay, Baja California Sur, Mexico. The stomach contents of 50 specimens were obtained (23 males and 27 females). Sex was diagnosed by direct observation of the gonads. Based on the gonadosomatic index, hepatosomatic index, and histological analyses, the reproductive season of the barred sand bass was corroborated for August 2016, April, August, and September 2017, and August 2018, and the non-reproductive season was corroborated for November 2016 and March 2018. The Index of Relative Importance (IRI) was used to classify the main diet components, which comprised three fish species, seven crustacean species, and one mollusk species. According to the IRI, the South American pilchard Sardinops sagax and the red pelagic crab Pleuroncodes planipes were the prey that contributed the most (55%) to the barred sand bass diet. The ANOSIM showed that there were significant differences in the amount and type of prey consumed by sex; the SIMPER analysis revealed that the species contributing the most to differences between the sexes were S. sagax (16.58%), Euphylax dovii (15.95%), Stenocionops ovata (12%), and P. planipes (11.82%) for females. There were significant differences in the amount and type of prey consumed between types of reproductive season; the species contributing the most to differences between seasons were Anchoa spp. (27.76%), and P. planipes for non-reproductive season (22.67%), and S. sagax (11.08%) for reproductive season. The feeding strategy of the barred sand bass was that of a specialist carnivorous predator that fed mainly on the fish Sardinops sagax during the reproductive season, which supply the dietary nutritional requirements of the lipids HUFA (arachidonic acid, 20:4n-6; eicosapentaenoic acid, 20:5n-3; docosahexaenoic acid, 22:6n-3), nutrients required to achieve reproductive success. 

Learedius learedi Price, 1934 (Trematoda: Spirorchiidae), in Black Turtle (Chelonia mydas agassizii) Hearts from Magdalena Bay, Baja California Sur, Mexico

10.1654/4113 ◽  
2004 ◽  
Vol 71 (1) ◽  
pp. 37-41 ◽  
Author(s):  
Roxana B. Inohuye-Rivera ◽  
Amaury Cordero-Tapia ◽  
Jorge Arellano-Blanco ◽  
Susan C. Gardner
Keyword(s):  
Baja California ◽  
Chelonia Mydas ◽  
Baja California Sur ◽  
Chelonia Mydas Agassizii ◽  
Magdalena Bay

scholarly journals Population dynamics of Megapitaria squalida (Bivalvia: Veneridae) at Magdalena Bay, Baja California Sur, Mexico

2014 ◽  
Vol 54 (3) ◽  
pp. 1003 ◽  
Author(s):  
Tanja Schweers ◽  
Matthias Wolff ◽  
Volker Koch ◽  
Francisco Sinsel Duarte
Keyword(s):  
Population Dynamics ◽  
Baja California ◽  
Baja California Sur ◽  
Magdalena Bay

Waterbirds of the Lagoon Complex Magdalena Bay-Almejas, Baja California Sur, Mexico

Waterbirds ◽  
2006 ◽  
Vol 29 (3) ◽  
pp. 350-364 ◽  
Author(s):  
Bulmara Zárate-ovando ◽  
Eduardo Palacios ◽  
Héctor Reyes-Bonilla ◽  
Edgar Amador ◽  
Georgina Saad
Keyword(s):  
Baja California ◽  
Baja California Sur ◽  
Magdalena Bay
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