The Moulting Stages of the Pea-Crab (<i>Pinnotheres pisum</i>)

Atkins, D.

doi:10.1017/s0025315400007955

Cited by 51 publications

(51 citation statements)

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“…Carapace width (CW) was measured with an ocular micrometer. Sex was determined by inspection of the pleopods (Atkins, 1926;Stauber, 1945;Jones, 1977a Fig. 1 shows the proportions of juveniles, males, females and ovigerous females in the Dissodactylus mellitae population from April 14, 1979to March 15, 1980.…”

Section: Methodsmentioning

confidence: 99%

Population dynamics and reproduction of Dissodactylus mellitae (Brachyura: Pinnotheridae) on its sand dollar host Mellita quinquiesperforata (Echinodermata)

Bell¹,

Stancyk²

1983

Mar. Ecol. Prog. Ser.

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Population dynamics of the symbiotic crab Djssodactylus mellitae Rathbun were studied by monthly collections from their sand dollar host Mellita quinquiesperforata (Leske) in North Inlet, South Carolina, USA. Size frequency analysis of carapace widths indicated a 12 to 15 mo life cycle for D. mellitae. Larvae were released during summer, grew to produce one or more clutches of eggs the next summer, and died shortly thereafter. Sex ratio was 1:l throughout the year; females attained a slightly larger maximum size. Fecundity did not vary over the reproductive season (April through September) and mean egg number was 206 ? 62 (S. d.) eggs per clutch. Most recruitment occurred from May through September. D, mellitae differs from other species in the family Plnnotheridae in that males and females are more similar in size and longevity, there are no soft carapace stages, clutch size is relatively small and the entire clutch is completely covered by the abdomen. Accessibility of sand dollars to settling D. mellitae and protection provided to post-metamorphic individuals may decrease mortality enough to balance the small clutches produced by this crab.

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Section: Methodsmentioning

confidence: 99%

Population dynamics and reproduction of Dissodactylus mellitae (Brachyura: Pinnotheridae) on its sand dollar host Mellita quinquiesperforata (Echinodermata)

Bell¹,

Stancyk²

1983

Mar. Ecol. Prog. Ser.

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“…Pearce (1964) found that the 1:1 ratio of male to female occurred only in the plankton, where insemination takes place. Atkins (1926), Pearce (1964) and Tablado and López Gappa (1995) have described the life-history of Pinnotheres spp. : both male and female crabs copulate in plankton and after copulation, female infests a host, where it pass stages I-V, increasing in size.…”

Section: Discussionmentioning

confidence: 99%

Effects of the pinnotherid crab Tumidotheres maculatus on the Tehuelche scallop Aequipecten tehuelchus in the San Matı́as Gulf, Argentina

Narvarte

Saiz

2004

Fisheries Research

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“…The species of pinnotherid crabs which live in bivalves adapt their life history and feeding habit to their hosts (Atkins 1926, 1955, Christensen 1958 Relationship between the pea crab and its host Christensen & McDermott 1958, Pearce 1966a, Jones 1977a. Crabs of the genus Dissodactylus settle on…”

Section: Entrance Into the Hostmentioning

confidence: 99%

“…crabs living in the mantle cavity of bivalves (Atkins 1926, Stauber 1945, Christensen & McDermott 1958, Kruczynski 1975, the pallial grooves of chitons (Webster 1968), the burrowtubes of polychaetes (Gray 1961), or on echinoids (Telford 1978a, b, 1982, Bell & Stancyk 1983, Bell 1984, 1988. In particular, for the genus Dissodactylus living on sand dollars, phylogenetic relationships have been analyzed on the basis of morphological characters (Griffith 1987) or the morphology of mouth parts and feeding behavior (Telford 1982).…”

Section: Introductionmentioning

confidence: 99%

Relationship between the pea crab Pinnixa tumida and its endobenthic holothurian host Paracaudina chilensis

Takeda¹,

Tamura²,

M³

1997

Mar. Ecol. Prog. Ser.

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ABSTRACT. The ecology of the pea crab Pinnixa tumida living in the endobenthic holothurian Paracaudina chllensis, which buries its body in the fine sandy bottom in the sublittoral zone, was investigated. Almost all of the pea crabs collected from the11 host holothurians were mature females. Mature pea crabs were found to live singly in the alimentary canal of the larger hosts, which are ma~nly dlstributed just below the low water level of the spring tlde. However, immature crabs were not found In either large or small hosts. In the laboratory, mature crabs searched for the tip of the host's tail, which appeared on the sand's surface, and then entered the host's alimentary canal through the opening of the anus at the tail's tip. These results indicate that the pea crab enters larger hosts only when it is mature, or just before maturity. Pea crabs showed 2 types of feeding preference in the laboratory: suspended particles and the mucus secreted In the alimentary canal of the host. Ovigerous females were found in the hosts between late February and mid-May, carrying eggs which developed slo~vly and synchronously with those of almost all of the other ovigerous females observed throughout this period, indicating that the pea crab has an annual breeding cycle. The biology of the pea crab was compared with that of crabs living in bivalves and on irregular echinoids.

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The Moulting Stages of the Pea-Crab (Pinnotheres pisum)

Cited by 51 publications

References 1 publication

Population dynamics and reproduction of Dissodactylus mellitae (Brachyura: Pinnotheridae) on its sand dollar host Mellita quinquiesperforata (Echinodermata)

Population dynamics and reproduction of Dissodactylus mellitae (Brachyura: Pinnotheridae) on its sand dollar host Mellita quinquiesperforata (Echinodermata)

Effects of the pinnotherid crab Tumidotheres maculatus on the Tehuelche scallop Aequipecten tehuelchus in the San Matı́as Gulf, Argentina

Relationship between the pea crab Pinnixa tumida and its endobenthic holothurian host Paracaudina chilensis

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