By Tadashi Kawai, Neil Cumberlidge
This e-book introduces up to date info on conservation matters, delivering an outline of what's had to increase the worldwide conservation of freshwater decapods corresponding to freshwater crabs, crayfish, and shrimps.
Biodiversity loss quite often is optimum in organisms that depend upon intact freshwater habitats, simply because freshwater ecosystems world wide are ache excessive threats from a number of resources. Our figuring out of the quantity and site of threatened species of decapods, and of the character in their extinction threats has more advantageous significantly lately, and has enabled the advance of species conservation thoughts.
This quantity specializes in saving threatened species from extinction, and emphasizes the significance of the winning implementation of conservation motion plans via cooperation among scientists, conservationists, educators, investment organizations, coverage makers, and conservation agencies.
Read or Download A Global Overview of the Conservation of Freshwater Decapod Crustaceans PDF
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Additional info for A Global Overview of the Conservation of Freshwater Decapod Crustaceans
Campos, M. R. (2008). Global diversity of crabs (Crustacea: Decapoda: Brachyura) in freshwater. Hydrobiologia, 595, 275–286. Chapter 2 A Remarkable Anomuran: The Taxon Aegla Leach, 1820. Taxonomic Remarks, Distribution, Biology, Diversity and Conservation Sérgio Luiz de Siqueira Bueno, Roberto Munehisa Shimizu and Juliana Cristina Bertacini Moraes Abstract The family Aeglidae comprises three genera, one extant (Aegla) and two extinct genera (Protaegla and Haumuriaegla), the latter two genera are known only from fossils from marine sediments (indicating a marine origin for the group).
Morphotype II male becomes numerically dominant by the time females are fully mature. Bueno and Shimizu (2009) suggested that morphotypes I and II represent a sequential shift from the non-reproductive to the reproductive phases respectively in the adult male population of Aegla franca. Functional maturity in adult males is therefore associated with the appearance of morphotype II, although mating will only take place when females are fully mature and ready to spawn. Larger and stronger chelae in adult males are advantageous in aggressive interactions between males during the mating period (Viau et al.
1 Taxonomic Remarks The family Aeglidae Dana, 1852 currently comprises three genera: Haumuriaegla Feldmann 1984; Protaegla Feldmann et al. 1998, and Aegla. The ﬁrst two genera are monotypic and known only from fossil records (Fig. 1): Protaegla miniscula is found in Early Cretaceous marine deposits (about 110 million years old) in Mexico (Feldmann et al. 1998), and Haumuriaegla glaessneri is found in Late Cretaceous marine deposits (about 75 million years old) in New Zealand (Feldmann 1984). These fossil ﬁndings provide strong support for the marine origin of the family Aeglidae, possibly in the Indo-Paciﬁc region (Feldmann 1986).