Growth, reproduction, and life span in<i>Sacculina carcini</i>Thompson (Cirripedia: Rhizocephala) in the Isefjord, Denmark

Lützen, Jørgen

doi:10.1080/00364827.1984.10420595

Cited by 55 publications

(52 citation statements)

References 11 publications

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“…It has been documented that C. sapidus bearing mature Loxothylacus texanus migrate towards the high salinity areas within the estuary emulating ovigerous females (Adkins 1972, Wardle & Tirpak 1991. The same migratory behavior has been described for other rhizocephalan-parasitized crab species (Phillips & Cannon 1978, Lützen 1984. This behavior has been explained for ovigerous C. sapidus as a way of releasing larvae in more favorable sites where dispersal would be enhanced (Williams 1984).…”

Section: Discussionmentioning

confidence: 77%

Oxygen consumption of the crab Callinectes rathbunae parasitized by the rhizocephalan barnacle Loxothylacus texanus as a function of salinity

Robles¹,

Álvarez²,

Alcaraz³

2002

Mar. Ecol. Prog. Ser.

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Rhizocephalan parasitism is one of the most important biotic factors affecting commercially valuable crab species in families such as Portunidae and Lithodidae. In addition to the long term and permanent effects of this parasitism on the hosts (e.g. sterilization, cessation of growth), other functional problems may arise due to the considerable size of the parasite and to its particular position inside and outside of the host. In this study, experiments with the Mexican blue crab Callinectes rathbunae parasitized by the rhizocephalan barnacle Loxothylacus texanus were conducted in the laboratory to test whether the parasite affects the host's oxygen consumption rate under changing salinity conditions. A total of 83 crabs (49 parasitized and 34 controls), all initially acclimated to a salinity of 5, were used for metabolic rate measurements over sequential 24 h periods at salinities of 5, 15 and 25. During this 3 d period, oxygen consumption of individual crabs was measured 5 times per day. Parasitized crabs were classified, according to the degree of maturation of the parasite, as: (1) crabs with internal parasites, bearing a modified abdomen; (2) crabs with virgin, immature, recently emerged parasites; and (3) crabs with mature, fully developed parasites. Crabs with internal and virgin parasites did not show differences in oxygen consumption rates with respect to control crabs. Crabs with mature parasites consumed from 57 to 139% more than other crabs under all salinity conditions. Although there is a significant metabolic cost for the host associated to the presence of mature L. texanus, it is not clear what specific process is responsible for the observed results. Since the increased oxygen consumption was unrelated to salinity, it is concluded that the host's osmoregulatory capabilities are not affected; other possible explanations include the constant grooming and maintenance of the parasite. At the population level, our results suggest that hosts bearing mature parasites may move within the estuaries from low to high salinity areas in order to reduce the metabolic energy expenditure caused by the combination of the parasite and hypoosmotic conditions.

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Section: Discussionmentioning

confidence: 77%

Oxygen consumption of the crab Callinectes rathbunae parasitized by the rhizocephalan barnacle Loxothylacus texanus as a function of salinity

Robles¹,

Álvarez²,

Alcaraz³

2002

Mar. Ecol. Prog. Ser.

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“…The life span of C. maenas in the native European and nonindigenous western Atlantic populations is 5-7 years [10,102,187] but is much shorter (3-4 years) in the northeastern Pacific nonindigenous population, apparently due to a much faster growth rate [29]. No data are available for life spans in the other nonindigenous populations.…”

Section: Life Spanmentioning

confidence: 99%

PopulationDynamics of Green Crabs (Carcinus maenas) -- A Review

Young¹,

Elliott²

2018

Preprint

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Carcinus maenas (the "shore crab" or "European green crab") is a very proficient invader (considered to be one of the world's 100 worst invaders by the IUCN) due to its phenotypic plasticity, wide temperature and salinity tolerance, and an extensive omnivorous diet. Native to Atlantic Europe, it has established two well-studied nonindigenous populations in the northwestern Atlantic and northeastern Pacific and lessstudied populations in Australia, Argentina and South Africa. Green crabs are eurythermal and euryhaline as adults, but they are limited to temperate coastlines due to more restrictive temperature requirements for breeding and larval development. They cannot tolerate wave-swept open shores so are found in wave-protected sheltered bays, estuaries and harbors. C. maenas has been the subject of numerous papers, with over 1000 published in the past decade. This literature review provides an up-to-date account of the current published information on the population dynamics of this very important species, including habitat preferences, physical parameter tolerances, reproduction and larval development, sizes of crabs, densities of populations, sex ratios, ecosystem dynamics and ecological impacts in the various established global populations of green crabs.

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“…Many rhizocephalans occur only on hosts above a certain minimal size, and the prevalence of parasites in the host population must provide the size range of hosts sampled and screened for parasites and the host-sampling method employed (Høeg, 1982;Lützen, 1984;Werner, 2001). Rhizocephalans affect the behavior of hosts and this can severely bias sampling (Høeg and Lützen, 1995).…”

Section: Collection Of Adult Barnaclesmentioning

confidence: 99%

Collecting and processing thoracican, acrothoracican, and rhizocephalan cirripedes

Chan

Kolbasov

Høeg

2016

Journal of Crustacean Biology

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Growth, reproduction, and life span inSacculina carciniThompson (Cirripedia: Rhizocephala) in the Isefjord, Denmark

Cited by 55 publications

References 11 publications

Oxygen consumption of the crab Callinectes rathbunae parasitized by the rhizocephalan barnacle Loxothylacus texanus as a function of salinity

Oxygen consumption of the crab Callinectes rathbunae parasitized by the rhizocephalan barnacle Loxothylacus texanus as a function of salinity

PopulationDynamics of Green Crabs (Carcinus maenas) -- A Review

Collecting and processing thoracican, acrothoracican, and rhizocephalan cirripedes

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