Osmoregulation of the xanthid crab, panopeus herbstii

Impacts of salinity and freshwater inflow on oyster-reef communities in Southwest Florida

“…Previous work examining salinity tolerance of Eurypanopeus depressus, Rhithropanopeus harrisii, and Panopeus herbstii (a congener of the Panopeus species collected in the current study) suggests that the dominant xanthids present on Southwest Florida oyster reefs are hyperosmotic regulators at reduced salinities and osmoconformers at higher salinities. This switch in osmoregulation occurs at estimated salinities of 15% , 27% , and 28% for R. harrisii (Reisser and Forward 1991), E. depressus (Shirley and McKenney 1981) and P. herbstii (Blasco and Forward 1988), respectively. Furthermore, oxygen consumption rates increase with decreasing salinities for the xanthids P. herbstii (Dimock and Groves 1975;Shumway 1983) and E. depressus (Walls 2006) and for the porcellanid Petrolisthes armatus (Shumway 1983).…”

Impacts of salinity and freshwater inflow on oyster-reef communities in Southwest Florida

“…Previous work examining salinity tolerance of Eurypanopeus depressus, Rhithropanopeus harrisii, and Panopeus herbstii (a congener of the Panopeus species collected in the current study) suggests that the dominant xanthids present on Southwest Florida oyster reefs are hyperosmotic regulators at reduced salinities and osmoconformers at higher salinities. This switch in osmoregulation occurs at estimated salinities of 15% , 27% , and 28% for R. harrisii (Reisser and Forward 1991), E. depressus (Shirley and McKenney 1981) and P. herbstii (Blasco and Forward 1988), respectively. Furthermore, oxygen consumption rates increase with decreasing salinities for the xanthids P. herbstii (Dimock and Groves 1975;Shumway 1983) and E. depressus (Walls 2006) and for the porcellanid Petrolisthes armatus (Shumway 1983).…”

Influence of salinity on prevalence of the parasite Loxothylacus panopaei in the xanthid Panopeus obesus in SW Florida

“…Dimock & Groves (1975) demonstrated, over a range of acclimation salinities, a general increase in oxygen consumption by P. herbstii in response to decreased salinity. Blasco & Forward (1988) reported that the species is a hyperosmotic regulator at salinities below 28 and an osmoconfomer at higher salinities, and is capable of quick adjustment to hypoosmotic shock. Shumway (1983) reported a sharp increase in oxygen consumption rate of P. herbstii subjected to reduced salinities (0 to 40% seawater) and noted that, although the species is highly tolerant of reduced salinities, it is most often found in higher salinities.…”

Hydromineral Regulation in the Hydrothermal Vent CrabBythograea thermydron

“…According to Williams (1980), Tudge et al (1998), and Sternberg et al (1999), Bythograea thermydron exhibits some similarities to Potamoidea (Potamidae), Portunoidea (Portunidae), and Xanthoidea (Goneplacidae; Xanthidae; Trapeziidae). The marine stenohaline osmoconformer B. thermydron may thus have derived from families consisting mainly of crab species that are able to strongly osmoregulate (Jones, 1941;Shaw, 1959;Robertson, 1960;Ballard and Abbott, 1969;Kamemoto and Kato, 1969;Harris and Micallef, 1971;Taylor et al, 1977;Birchard et al, 1982;Blasco and Forward, 1988; review in Mantel and Farmer, 1983). During its evolution, B. thermydron would have lost its ancestor's osmoregulatory ability, which had become superfluous in an environment where salinity is stable.…”

Impacts of salinity and freshwater inflow on oyster-reef communities in Southwest Florida

“…Previous work examining salinity tolerance of Eurypanopeus depressus, Rhithropanopeus harrisii, and Panopeus herbstii (a congener of the Panopeus species collected in the current study) suggests that the dominant xanthids present on Southwest Florida oyster reefs are hyperosmotic regulators at reduced salinities and osmoconformers at higher salinities. This switch in osmoregulation occurs at estimated salinities of 15% , 27% , and 28% for R. harrisii (Reisser and Forward 1991), E. depressus (Shirley and McKenney 1981) and P. herbstii (Blasco and Forward 1988), respectively. Furthermore, oxygen consumption rates increase with decreasing salinities for the xanthids P. herbstii (Dimock and Groves 1975;Shumway 1983) and E. depressus (Walls 2006) and for the porcellanid Petrolisthes armatus (Shumway 1983).…”

Influence of salinity on prevalence of the parasite Loxothylacus panopaei in the xanthid Panopeus obesus in SW Florida

“…Dimock & Groves (1975) demonstrated, over a range of acclimation salinities, a general increase in oxygen consumption by P. herbstii in response to decreased salinity. Blasco & Forward (1988) reported that the species is a hyperosmotic regulator at salinities below 28 and an osmoconfomer at higher salinities, and is capable of quick adjustment to hypoosmotic shock. Shumway (1983) reported a sharp increase in oxygen consumption rate of P. herbstii subjected to reduced salinities (0 to 40% seawater) and noted that, although the species is highly tolerant of reduced salinities, it is most often found in higher salinities.…”

Hydromineral Regulation in the Hydrothermal Vent CrabBythograea thermydron

“…According to Williams (1980), Tudge et al (1998), and Sternberg et al (1999), Bythograea thermydron exhibits some similarities to Potamoidea (Potamidae), Portunoidea (Portunidae), and Xanthoidea (Goneplacidae; Xanthidae; Trapeziidae). The marine stenohaline osmoconformer B. thermydron may thus have derived from families consisting mainly of crab species that are able to strongly osmoregulate (Jones, 1941;Shaw, 1959;Robertson, 1960;Ballard and Abbott, 1969;Kamemoto and Kato, 1969;Harris and Micallef, 1971;Taylor et al, 1977;Birchard et al, 1982;Blasco and Forward, 1988; review in Mantel and Farmer, 1983). During its evolution, B. thermydron would have lost its ancestor's osmoregulatory ability, which had become superfluous in an environment where salinity is stable.…”

Impacts of salinity and freshwater inflow on oyster-reef communities in Southwest Florida

“…Previous work examining salinity tolerance of Eurypanopeus depressus, Rhithropanopeus harrisii, and Panopeus herbstii (a congener of the Panopeus species collected in the current study) suggests that the dominant xanthids present on Southwest Florida oyster reefs are hyperosmotic regulators at reduced salinities and osmoconformers at higher salinities. This switch in osmoregulation occurs at estimated salinities of 15% , 27% , and 28% for R. harrisii (Reisser and Forward 1991), E. depressus (Shirley and McKenney 1981) and P. herbstii (Blasco and Forward 1988), respectively. Furthermore, oxygen consumption rates increase with decreasing salinities for the xanthids P. herbstii (Dimock and Groves 1975;Shumway 1983) and E. depressus (Walls 2006) and for the porcellanid Petrolisthes armatus (Shumway 1983).…”

Influence of salinity on prevalence of the parasite Loxothylacus panopaei in the xanthid Panopeus obesus in SW Florida

“…Dimock & Groves (1975) demonstrated, over a range of acclimation salinities, a general increase in oxygen consumption by P. herbstii in response to decreased salinity. Blasco & Forward (1988) reported that the species is a hyperosmotic regulator at salinities below 28 and an osmoconfomer at higher salinities, and is capable of quick adjustment to hypoosmotic shock. Shumway (1983) reported a sharp increase in oxygen consumption rate of P. herbstii subjected to reduced salinities (0 to 40% seawater) and noted that, although the species is highly tolerant of reduced salinities, it is most often found in higher salinities.…”

Hydromineral Regulation in the Hydrothermal Vent CrabBythograea thermydron

“…According to Williams (1980), Tudge et al (1998), and Sternberg et al (1999), Bythograea thermydron exhibits some similarities to Potamoidea (Potamidae), Portunoidea (Portunidae), and Xanthoidea (Goneplacidae; Xanthidae; Trapeziidae). The marine stenohaline osmoconformer B. thermydron may thus have derived from families consisting mainly of crab species that are able to strongly osmoregulate (Jones, 1941;Shaw, 1959;Robertson, 1960;Ballard and Abbott, 1969;Kamemoto and Kato, 1969;Harris and Micallef, 1971;Taylor et al, 1977;Birchard et al, 1982;Blasco and Forward, 1988; review in Mantel and Farmer, 1983). During its evolution, B. thermydron would have lost its ancestor's osmoregulatory ability, which had become superfluous in an environment where salinity is stable.…”