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Embryonic development and duration of incubation period of tropical intertidal hermit crabs (Decapoda, Anomura) Zoologia
Turra,Alexander; Leite,Fosca Pedini Pereira.
The description of the embryonic development of the hermit crabs Clibanarius antillensis Stimpson, 1859, C. sclopetarius (Herbst, 1796), C. vittatus (Bosc, 1802), and Pagurus criniticornis (Dana, 1852) and preliminary observations on the development of Pagurus brevidactylus (Stimpson, 1858) and Paguristes tortugae Schmitt, 1933 were done. The analysis of the external morphology of the embryos of the studied species allowed the identification of seven stages: Stage 1, Zygote and cleavage; Stage 2, Homogeneous mass (advanced cleavage and gastrulation); Stage 3, Initiation of the germinal disc (yolk-free area); Stage 4, Percentage of yolk-free area from 5% to 50-70%; Stage 5, Eye pigmentation (comma-shape) and heart beating; Stage 6, Percentage of yolk-free...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clibanarius; Life history strategies; Pagurus; Reproduction.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000300020
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Fish population responses to hydrological variation in a seasonal wetland in southeast México Neotropical Ichthyology
Escalera-Vázquez,Luis H.; Calderón-Cortés,Nancy; Zambrano-González,Luis.
ABSTRACT Hydrological variation differently affects fish species. In the present study, the response of local populations of 13 fish local species to hydrological variation in a tropical wetland was evaluated. The objectives were to analyze the abundance response of fish species with distinct life history strategies and to assess the role of hydrological variation on fish population patterns. We found that opportunistic strategists were favored by high hydrological variation in drought periods, the equilibrium strategists were related to stable habitats, and periodic strategists were regulated by floods and temperature. However, the life history strategies identified for some species in this study do not correspond to the classification reported in other...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dry season; Fish resilience; Life history strategies; Rainy season; Sian Ka´an.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200207
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