Contributions to the biology of molting and growth of the Longarm river prawn Macrobrachium tenellum (Decapoda: Paleamonidae) in Mexico
| Autor: | Fernando Vega-Villasante, Stig Yamasaki-Granados, Marcelo García-Guerrero, Luis Daniel Espinosa-Chaurand, M. Ruíz-Fregozo, Edilmar Cortés-Jacinto |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
media_common.quotation_subject
growth Molting cycle General Biochemistry Genetics and Molecular Biology Animal science Group (periodic table) molting cycle Growth rate development Mexico lcsh:QH301-705.5 media_common biology Decapoda Ecology exoskeleton Prawn Aquatic animal biology.organism_classification ecdysis Macrobrachium tenellum lcsh:Biology (General) Reproduction General Agricultural and Biological Sciences Moulting |
| Zdroj: | Archives of Biological Sciences, Vol 64, Iss 2, Pp 651-658 (2012) |
| ISSN: | 1821-4339 0354-4664 |
| Popis: | Studies on the molting cycle of Macrobrachium tenellum are not available, which limits the scope of studies of growth and reproduction. The duration of the molt cycle was determined under controlled experimental conditions. The prawns were divided into four groups according to weight: Group 1 (1.0-1.9 g), Group 2 (2.0-2.9 g), Group 3 (3.0-3.9 g), and Group 4 (4.0-9.0 g). The increase in total weight was higher in groups 2 (23.4%) and 3 (20.3%) than in group 1 (~18%) and 4 (~18%). The increase in size after molting among all groups was statistically different: in group 1 it increased 6.1% (highest) and in group 2 it increased 2.2% (lowest). The duration of a complete cycle was 8.9, 9.4, 10.4, and 15.1 days for groups 1, 2, 3, and 4, respectively. The lengths of the molting cycles were not significantly different between groups 1 and 2, but group 4 was different from group 1. |
| Databáze: | OpenAIRE |
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