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16 results for “Lithodes”
Data from: Widespread infection of Areospora rohanae in southern king crab (Lithodes santolla) populations across south Chilean Patagonia
Cottage cheese disease is caused by microsporidian parasites that infect a wide range of animal populations. Despite its potential to affect economically important activities, the spatial patterns of prevalence of this disease are still not well understood. Here, we analyze the occurrence of the microsporidian Areospora rohanae in populations of the king crab Lithodes santolla over ca. 800 km of the southeastern Pacific shore. In winter 2011, conical pots were deployed between 50 and 200 m depth to capture crabs of a wide range of sizes. The infection was widely distributed along the region, with a mean prevalence of 16 %, and no significant association between prevalence and geographic location was detected. Males, females, and ovigerous females showed similar prevalence values of 16.5 (13 – 18.9), 15 (9.2 – 15), and 16.7 % (10 – 19 %), respectively. These patterns of prevalence were consistent across crab body sizes, despite the ontogenetic and sex-dependent variations in feeding behavior and bathymetric migrations previously reported for king crabs. This study provided the first report of the geographic distribution of A. rohanae infecting southern king crabs.
Data from: Spatial variability in size at maturity of golden king crab (Lithodes aequispinus) and implications for fisheries management
Many crab fisheries around the world are managed by size, sex and season, where males are given at least one opportunity to reproduce before being harvested. Golden king crab (Lithodes aequispinus) supports a commercial fishery in Southeast Alaska and legal size is based on growth and maturity information from other parts of their range. Size at maturity estimates varied for crabs among seven management areas in Southeast Alaska, where male maturity estimates increased in size with increases in latitude while maturity estimates across their North Pacific range decreased in size with increases in latitude. Depth, temperature, and harvest history were not related to variation observed in male maturity estimates. Management implications from this research include reducing legal size in some areas to maximize harvest potential and increasing in others to allow male crab the opportunity to reproduce before being harvested. A more conservative strategy would incorporate the largest maturity estimate thus, increasing the legal size which would have a negative impact to the commercial fishery, but allow male crab the opportunity to reproduce before being harvested. This study shows the importance of understanding how life history characteristics change over space and the challenge incorporating spatial variability for improved fisheries management.
FIGURE 1. Lithodes paulayi n in Some lithodid crabs (Crustacea: Decapoda: Lithodidae) from Taiwan and adjacent waters, with the description of one new species from Guam
FIGURE 1. Lithodes paulayi n.sp., holotype male 113 × 102 mm, Guam. (a) carapace, dorsal. (b) lateral view of anterior carapace and rostrum. (c) dorsal view of right anterolateral carapace and appendages. (d) lateral view of right anterolateral carapace and appendages. (e) right third walking leg, dorsal. Scales = 1 cm.
FIGURE 2. Lithodes paulayi n in Some lithodid crabs (Crustacea: Decapoda: Lithodidae) from Taiwan and adjacent waters, with the description of one new species from Guam
FIGURE 2. Lithodes paulayi n.sp., Guam. (a, c) holotype male 113 × 102 mm. (b, d) paratype male 45 × 39 mm. (a–b) dorsal view of carapace. (c–d) lateral view of carapace.
FIGURE 3. Lithodes paulayi n in Some lithodid crabs (Crustacea: Decapoda: Lithodidae) from Taiwan and adjacent waters, with the description of one new species from Guam
FIGURE 3. Lithodes paulayi n.sp., Guam. (a–c) holotype male 113 × 102 mm. (d) paratype male 45 × 39 mm. (a) dorsal view of left basal segment of antennal peduncle. (b) lateral view of right chela. (c–d) right third walking leg, dorsal.
FIGURE 7. Lithodes galapagensis n in Four new species of the family Lithodidae (Decapoda: Anomura) from the collections of the National Museum of Natural History, Smithsonian Institution
FIGURE 7. Lithodes galapagensis n. sp. a–d, male holotype, 114 mm CL (USNM 1122586), Galapagos Archipelago, Cabo Douglas, Fernandina Island, 00°17'30"S, 091°39'36"W, 648 m. (a) carapace, lateral. (b) dorsal carapace spine, lateral. (c) left walking leg 3, posterior. (d) whole organism, dorsal (note damage to carapace on the left branchial region). Scale bar = 10 mm for a, c, d; 1 mm for b.
FIGURE 2. Lithodes longispina Sakai, 1971 in First records of Lithodes longispina Sakai, 1971 (Crustacea: Decapoda: Anomura: Lithodidae) from southwestern Taiwan, including a site in the vicinity of a cold seep
FIGURE 2. Lithodes longispina Sakai, 1971, off southwestern Taiwan, stn CST 2, 1360–1669 m, ovigerous female (cl 163.5 mm, pcl 110.9 mm, cw 100.5 mm), NTOU A01420: a, carapace, dorsal view; b, anterior carapace, right lateral view; c, right antennal peduncle, dorsal view; d, right pereiopod 4; e, dactylus of right pereiopod 4. Scales = 10 mm.
FIGURE 1. Lithodes longispina Sakai, 1971 in First records of Lithodes longispina Sakai, 1971 (Crustacea: Decapoda: Anomura: Lithodidae) from southwestern Taiwan, including a site in the vicinity of a cold seep
FIGURE 1. Lithodes longispina Sakai, 1971, off southwestern Taiwan: a, stn CST 2, 1360–1669 m, ovigerous female (cl 163.5 mm, pcl 110.9 mm, cw 100.5 mm), NTOU A01420; b, stn PCP445, 982–999 m, male (cl 34.0 mm, pcl 22.0 mm, cw 20.0 mm), NTOU A01419; c, stn PCP344, 995–1073 m, male (cl 20.0 mm, pcl 11.0 mm, cw 9.0 mm), NTOU A01414.
FIGURE 4 in Lithodes formosae, a new species of king crab from Taiwan (Crustacea: Decapoda: Lithodidae)
FIGURE 4. Lithodes formosae sp. nov., ovigerous female holotype (cl 78.4 mm, pcl 55.9 mm, cw 54.7 mm), Dasi, Ilan County, NE Taiwan. Colour in life.
FIGURE 3 in Lithodes formosae, a new species of king crab from Taiwan (Crustacea: Decapoda: Lithodidae)
FIGURE 3. Lithodes formosae sp. nov., ovigerous female holotype (cl 78.4 mm, pcl 55.9 mm, cw 54.7 mm), Dasi, Ilan County, NE Taiwan. A, right chela. B, left chela. C, anterior cephalothorax, dorsal view. D, anterior cephalothorax including antenna, right oblique view. E, posterior carapace and abdomen. F, abdomen.
FIGURE 2 in Lithodes formosae, a new species of king crab from Taiwan (Crustacea: Decapoda: Lithodidae)
FIGURE 2. Lithodes formosae sp. nov., ovigerous female holotype (cl 78.4 mm, pcl 55.9 mm, cw 54.7 mm), Dasi, Ilan County, NE Taiwan. A, carapace. B, right pereopod 4. C, right pereopod 4 merus and carpus. D, right pereopod 4 dactylus.
FIGURE 1 in Lithodes formosae, a new species of king crab from Taiwan (Crustacea: Decapoda: Lithodidae)
FIGURE 1. Lithodes formosae sp. nov., ovigerous female holotype (cl 78.4 mm, pcl 55.9 mm, cw 54.7 mm), Dasi, Ilan County, NE Taiwan. A, dorsal habitus. B, cephalothorax, right lateral view.
Data from: Widespread infection of Areospora rohanae in southern king crab (Lithodes santolla) populations across south Chilean Patagonia
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Data from: Spatial variability in size at maturity of golden king crab (Lithodes aequispinus) and implications for fisheries management
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Data from: Metabolic costs imposed by hydrostatic pressure constrain bathymetric range in the lithodid crab Lithodes maja
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Data from: The role of ontogeny in physiological tolerance: decreasing hydrostatic pressure tolerance with development in the northern stone crab Lithodes maja
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