Download A Global Overview of the Conservation of Freshwater Decapod by Tadashi Kawai, Neil Cumberlidge PDF

By Tadashi Kawai, Neil Cumberlidge

This ebook introduces up-to-date details on conservation matters, delivering an outline of what's had to enhance the worldwide conservation of freshwater decapods corresponding to freshwater crabs, crayfish, and shrimps.

Biodiversity loss often is maximum in organisms that rely on intact freshwater habitats, simply because freshwater ecosystems all over the world are pain severe 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 greater drastically lately, and has enabled the advance of species conservation options.

This quantity specializes in saving threatened species from extinction, and emphasizes the significance of the profitable implementation of conservation motion plans via cooperation among scientists, conservationists, educators, investment enterprises, coverage makers, and conservation agencies.

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Additional resources for A Global Overview of the Conservation of Freshwater Decapod Crustaceans

Sample text

In males, pleopods 2 through 5 are either lacking altogether or are vestigial and resemble calcified knobs (Martin and Abele 1988) (Fig. 6b). This sexually dimorphic abdominal appendage trait can be used to determine the gender of freshwater aeglids. However, adult males with rudimentary pairs of pleopods 2–5 have been observed in two species: Aegla perobae Hebling and Rodrigues, 1977 (Moraes and Bueno 2015), and an undescribed troglobitic species (Bueno et al. 2014a) from Brazil (Fig. 6c). These rudimentary male pleopods are clearly shorter and less setose than the corresponding pairs of pleopods observed in adult females, but they are not vestigial, and, they are either one- or two-segmented.

2008) (Fig. 1). With 78 described species and subspecies, these freshwater aeglids represent only 3 % of the extant anomuran assemblage of approximately 2500 species (sensu De Grave et al. 2009). Until recently, the family Aeglidae was included in the superfamily Galatheoidea Samouelle, 1819, together with three other anomuran families: Chirostylidae Ortmann, 1892, Porcellanidae Haworth, 1825, and Galatheidae Samouelle, 1819 (Schmitt 1942b; Bowman and Abele 1982; Martin and Abele 1986; Martin and Davis 2001).

A Aegla paulensis: Lateral view of the carapace showing the linea aeglica (la) and the linea aeglica ventralis (lav); ba: base of the antenna. Bar 2 mm. b Aegla strinatii: Dorsal view of the posterior region of the carapace showing the cardiac area (yellow) and the three subdivisions of the branchial area (red): interior area (a), anterior area (b) and posterior area (c). Cervical groove (cg), linea aeglica dorsalis (lad), linea aeglica lateralis (lal), branchial linea (brl), transverse dorsal linea (tdl), and dorsal longitudinal linea (dll).

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