El rol de Cyrtograpsus angulatus (Crustacea; Brachyura) en los ciclos de vida de Microphallus szidati (Digenea; Microphallidae) y Falsifilicollis chasmagnathi (Acanthocephala; Filicollidae): algunos aspectos de su ecologia parasitaria

Abstract

Based on a study of the larvae from two helminth species parasitizing the crab Cyrtograpsus angulatus Dana, 1851 (Microphallus szidati Martorelli, 1986 and Falsifilicollis chasmagnathi Holcman-Spector et al., 1977), from Mar chiquita lagoom (Argentina) together with the analyses of their life cycles and rates of prevalence, intensity and association coefficient (compared in definitive and intermediate host) the following conclusions have been reached: a) C. angulatus suns to be an excellent intermediate host in the life-cycles of the studied helminths; b) the size of the crabs and the occurrence of natural amputations in the females (Spivak & Politis, in press) appeared correlated with prevalence; c) in the studied crabs the prevalence for F. chasmagnathi is higher in males than in females; d) the intensity did not appear correlated with size and sex of the intermediate host; e) M. szidati and F. chasmagnathi are closely associated with the intermediate host; f) C. angulatus and Himantopus melanurus Vieillot, 1817 (Aves; Recurvirostridae) are reported as new intermediate and definitive hosts, respectively, for F. chasmagnathi; g) Chasmagnathus granulata Dana, 1851 (Crustacea; Brachyura) is reported as a new intermediate host for M. szidati.

Parasites and Epibionts of Grapsid Crabs in Bahía Blanca Estuary, Argentina

“…-The body measurements and the presence of a genital atrium containing 10 atrial pockets agree with metacercariae of L. cruzi. The metacercariae developed eggs in saline solution at 37 • C. With the exception of a smaller ovary (37-54 by 56-68 vs. 52-60 by 90-100) observed in L. cruzi from our study, all other measurements agree with those reported by Martorelli (1988) who first reported L. cruzi parasitizing the gonads, muscle, and connective tissue of the freshwater shrimp Palaemonetes argentinus Nobili, 1901. This shrimp is one of the most widely distributed decapods in Argentina, occurring both in fresh water and brackish water areas (Spivak, 1997).…”

“…This species was described by Holcman-Spector et al (1977) in N. granulata from the Santa Lucía estuary in Uruguay. Profilicollis chasmagnathi was also reported in C. angulatus from Mar Chiquita coastal lagoon (Martorelli, 1989), and in C. angulatus and N. granulata from the Bahía Blanca estuary (La Sala & Martorelli, 2007). Remarks.…”

“…This shrimp is one of the most widely distributed decapods in Argentina, occurring both in fresh water and brackish water areas (Spivak, 1997). Levinseniella cruzi has been reported in hosts from both fresh water and brackish environments (Martorelli, 1988;Martorelli & Ivanov, 1996). Thus, this digenean appears to have a wide range of salinity tolerance and a wide array of potential hosts.…”

“…Olivier et al, 1972;Spivak et al, 1994). Although research has been conducted on parasites and epibionts infecting both crabs (Mañé-Garzón & Sobota, 1974;Holcman-Spector et al, 1977;Martorelli, 1986Martorelli, , 1989Martorelli & Schuldt, 1990;Etchegoin & Martorelli, 1997;Silva et al, 2003Silva et al, , 2007Cremonte et al, 2007;La Sala et al, 2009a), there is still an important gap in our knowledge about the parasitological fauna of these crabs in the Bahía Blanca estuary in the southwest of the Buenos Aires province.…”

Effects of two acanthocephalan species on the reproduction of Hyalella patagonica (Amphipoda, Hyalellidae) in an Andean Patagonian Lake (Argentina)

“…In South America, researches about physiological and behavioral alterations in crustaceans acting as intermediate hosts of acanthocephalans are scarce and have been done only with estuarine and sea crabs (Martorelli, 1989;Haye and Ojeda, 1998;Rojas and Ojeda, 2005).…”