Carmen Rodríguez-Jaramillo, Juana López-Martínez, Eloísa Herrera-Valdivia, Carlos H. Rábago-Quiroz
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引用次数: 0
Abstract
The spider crab Maiopsis panamensis is the largest brachyuran crab in the Gulf of California and is found mainly in deep water. This study of the spider crab reproductive cycle in Mexican coastal waters used histological and chemical methods to describe oogenesis in detail and to define a scale of maturity based on visible characteristics for the different stages of gonial cells. The criteria used in the description of oogenesis were oocyte diameter, nucleus morphology, ooplasm characteristics, and degree of yolk accumulation, as well as lipid, protein, and carbohydrate content. These results showed that maturation and spawning are continuous in this species during most of the year, with small variations in the proportion of ovigerous females. The lowest frequency of mature females was found in spring (March to May) and summer (June to August). The organisms migrate to greater depths in the second half of the year. Maiopsis panamensis was found to have high reproductive potential because each female can produce multiple generations of oocytes in the ovaries while carrying the ovigerous mass. These characteristics mean that females spawn and hatch larvae numerous times throughout the year. Studies on the biology of this spider crab combined with study of techniques for catching them would allow informative strategies towards the sustainable use of this species in the Mexican Pacific Ocean and the Gulf of California.
期刊介绍:
Invertebrate Biology presents fundamental advances in our understanding of the structure, function, ecology, and evolution of the invertebrates, which represent the vast majority of animal diversity. Though ultimately organismal in focus, the journal publishes manuscripts addressing phenomena at all levels of biological organization. Invertebrate Biology welcomes manuscripts addressing the biology of invertebrates from diverse perspectives, including those of:
• genetics, cell, and molecular biology
• morphology and biomechanics
• reproduction and development
• physiology and behavior
• ecology
• evolution and phylogenetics