Seasonal Abundance, Size Composition, and Growth of Rock Crab, Cancer Antennarius Stimpson, Off Central California

Carroll, Jay C

doi:10.2307/1548095

Cited by 27 publications

(12 citation statements)

References 16 publications

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“…Mauchline (1976) concluded that the length of the intermoult period increased directly as the cube of the body length, or logarithmically as the body length, or in relation to the successive moultings. Present findings are also in conformity with Carroll (1982), who reported that unsexed juveniles have a constant ratio between chela height and carapace width up to approximately 65 mm CW. Beyond this size, discontinuous relative growth occurs as chela height to carapace width ratios of sexually mature males and females diverge from the juvenile proportions.…”

Section: Discussionsupporting

confidence: 93%

Growth of the blue swimmer crab, Portunus pelagicus (Linnaeus, 1758) (Decapoda, Brachyura) in captivity

Josileen¹,

Menon²

2005

Crustac

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The growth of hatchery produced Portunus pelagicus crabs was monitored under laboratory conditions by recording growth at each moult from the 1 st crab instar onwards. Male and female crabs attained sexual maturity by their 12 th and 14 th moult, respectively. The experiment lasted for 455 days when the last crab died. This paper describes the growth of male and female crabs in each moulting stage, with details of their carapace width and length, chelar length and height, abdominal width and length, and total weight. Moulting frequency, secondary sexual characteristics, and moult increments were also monitored.

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Section: Discussionsupporting

confidence: 93%

Growth of the blue swimmer crab, Portunus pelagicus (Linnaeus, 1758) (Decapoda, Brachyura) in captivity

Josileen¹,

Menon²

2005

Crustac

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“…It may be particularly important to investigate whether our inability to detect an effect of crab size on capture probability may have biased our density estimates. Other studies of decapods have noted pronounced increases in vulnerability to trapping with increasing size, for example, in the lobster Homarus americanus (Smith, 1944) and the rock crab Cancer antennarius (Carroll, 1982).…”

Section: Summary Of Experimental Outcomesmentioning

confidence: 93%

A mark-recapture approach to estimating population density from continuous trapping data: application to edible crabs, Cancer pagurus, on the east coast of England

et al. 2003

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“…Data for C. gracilis, C. magister, C. oregonensis, and C. productus were from Orensanz & Gallucci (1988), while data for C. antennarius were from Carroll (1982). No data were available for C. branneri so size-at-instar was estimated to be intermediate between the next largest and the next smallest species (C. gracilis and C. oregonensis respectively).…”

Section: Estimation Of Instarmentioning

confidence: 99%

Variation in safety factors of claws within and among six species of Cancer crabs (Decapoda: Brachyura)

Taylor

2000

Biological Journal of the Linnean Society

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To better understand how safety factors of biological structures evolve, we examined the frequency of claw failure, and the intra-and interspecific patterns of variation in maximum biting force and breaking strength in the claws of six species of Cancer (Linnaeus) crabs that live in sympatry along the coast of the northeastern Pacific: C. antennarius, C. branneri, C. gracilis, C. magister, C. oregonensis and C. productus. Although the breakage frequencies in natural populations were similar among species (≈ 6%), they were higher than predicted based on failure probabilities calculated from laboratory measurements of biting force and breaking strength for healthy pristine claws. The incidence of claw damage was correlated with the degree of wear, suggesting that claws later in the intermolt interval were more likely to fail. Within species, safety factors increased from 3.1 to 4.6 with increasing instar number due primarily to a decline in muscle stress (force per unit area of apodeme). Surprisingly, the lower maximum muscle stress generated by later instars appeared to be due to behavioral restraint, since it was not accompanied by relatively lower muscle mass. In addition, among individuals of the same claw size, lower breaking forces were correlated with lower maximum biting force, and both were correlated with lighter cuticle and closer muscle mass, suggesting a coupling that maintains a more stable safety factor over the moult cycle. In some species, size-adjusted maximum biting forces were higher for males than females, but this paralleled differences in breaking strength, so safety factors did not differ between the sexes. Among the six Cancer species, one exhibited an unusually high safety factor (C. oregonensis, 7.4) and another an unusually low one (C. magister, 2.6). The remaining four species were similar to each other and exhibited an intermediate safety factor (3.6). From a phylogenetic perspective, the species with more extreme safety factors appeared to be derived from a common ancestor with an intermediate safety factor. From an ecological perspective, species more closely associated with rocky substrata, and presumably a higher incidence of hard-shelled prey, exhibited higher safety factors. But safety factors were also correlated with relative claw size, and sexual dimorphism in claw size. Although we cannot say whether habitat, diet or sexual selection are primarily responsible for the differences in safety factors observed among species, the cost of producing a relatively larger claw seems an unlikely explanation because safety factors did not differ between males and females in any of the sexually dimorphic species.

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Seasonal Abundance, Size Composition, and Growth of Rock Crab, Cancer Antennarius Stimpson, Off Central California

Cited by 27 publications

References 16 publications

Growth of the blue swimmer crab, Portunus pelagicus (Linnaeus, 1758) (Decapoda, Brachyura) in captivity

Growth of the blue swimmer crab, Portunus pelagicus (Linnaeus, 1758) (Decapoda, Brachyura) in captivity

A mark-recapture approach to estimating population density from continuous trapping data: application to edible crabs, Cancer pagurus, on the east coast of England

Variation in safety factors of claws within and among six species of Cancer crabs (Decapoda: Brachyura)

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