Population structure and morphometric variation in the sand-bubbler crab Scopimera crabricauda (Brachyura: Dotillidae)

in Animal Biology
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In the present study, population ecology and relationships between various morphometric characters of the sand-bubbler crab Scopimera crabricauda from the Persian Gulf (Iran) were studied. Crabs were collected monthly by excavating nine quadrats in high-density areas of open burrows at low, mid and high intertidal levels during spring low tides for one year. A total of 534 crabs was collected, of which 70% were males (and 30% females). Mean carapace width and total weight in both sexes showed significant differences. Crabs with a carapace width ranging from 5 to 7 mm were the dominant crabs in the population. The highest numbers of crabs were found in the higher intertidal area. The mean size of crabs decreased towards the sea. The aggregation of small crabs was found towards sea in female crabs. Juveniles were abundantly found from January to March whereas the sub-adults and adults were mostly found from April to January. The carapace length to carapace width relationship differed between males and females, as did the carapace width and carapace length to total weight relationships. Finally, the relationship between carapace width and weight for both sexes showed that the growth of this species is allometric.

Population structure and morphometric variation in the sand-bubbler crab Scopimera crabricauda (Brachyura: Dotillidae)

in Animal Biology



BagenalT. (1978) Method for Assessment of Fish Production in Fresh Waters. 3rd Edition. IBP Handbook pp.  1-365. Blackwell Scientific PublicationsOxford, UK.

BarnardK.H. (1950) Descriptive catalogue of south African decapod Crustacea (crabs and shrimps). Ann. S. Afr. Mus.381-815.

CadimaE.L. (2003) Fish stock assessment manual. FAO Fish. Techn. Pap. 393 161 pp.

CadrinS.X. (2000) Advances in morphometric identification of fishery stocks. Rev. Fish Biol. Fish.1091-112.

ClaytonD.A.Al-KindiA. (1998) Population structure and dynamics of two scopimerine sand crabs Scopimera crabricauda alcock 1900 and Dotilla sulcata (Forskåll 1775) in an estuarine habitat in Oman. Trop. Zool.11197-215.

FielderD.R. (1970) The feeding behaviour of the sand crab Scopimera inflata (Decapoda: Ocypodidae). J. Zool. Lond.16035-50.

FielderD.R. (1971) Some aspects of the distribution and population structure in the sand bubbler crab Scopimera inflata Milne Edwards, 1873 (Decapoda: Ocypodidae). Austr. J. Mar. Freshw. Res.2241-47.

FumisP.B.FransozoA.BertiniG.BragaA.A. (2007) Morphometry of the crab Hexapanopeus schmitti (Decapoda: Xanthoidea) on the northern coast of the state of São Paulo, Brazil. Rev. Biol. Trop.55163-170.

GherardiF.RussoS. (2001) Burrowing activity in the ocypodid crab, Dotilla fenestrata (crustacean, Ocypodidae) living in a mangrove swamp. J. Zool. Lond.253211-223.

GherardiF.RussoS.AnyonaD. (1999) Burrow-orientated activity in the ocypodid crab, Dotilla fenestrata, living in a mangrove swamp. J. Mar. Biol. Assoc.79281-293.

GorceG.ErgudenD.SangunL.CekicM.AlagozS. (2006) Width/length and relationships of the blue crab (Callinectes sapidus Rathbun, 1986) population living in Camlik Lagoon Lake (Yumurtalik). Pakistan J. Biol. Sci.91460-1464.

HailsA.J.AzizY.S. (1982) Abundance, breeding and growth of the ocypodid crab Dotilla myctiroides (Milne-Edwards) on a west Malaysian beach. Estuar. Coast. Shelf Sci.15229-239.

HaradaE.KawanabeH. (1955) The behaviour of the sand-crab, Scopimera globosa de Haan, with special reference to the problem of coaction between individuals. Jpn. J. Ecol.1955(4) 162-165.

HartnollR.G. (1973) Factors affecting the distribution and behavior of the crab Dotilla fenestrata on east African shores. Estuar. Coast. Mar. Sci.1137-152.

HartnollR.G. (1974) Variation in growth pattern between some secondary sexual characteres in crabs (Decapoda, Brachyura). Crustaceana27131-136.

HenmiY.KanetoM. (1989) Reproductive ecology of three ocypodid crabs. I. The influence of activity differences on reproductive traits. Ecol. Res.417-29.

JosileenJ. (2011) Morphometrics and length-weight relationship in the blue swimmer crab Portunus pelagicus (Linnaeus, 1758) (Decapoda, Brachyura) from the Mandapam coast, India. Crustaceana841665-1681.

KempS. (1919) Notes on the Crustacea Decapoda in the Indian Museum XII. Scopimerinae. Rec. Indian Mus.16305-348.

KingR.P. (1996) Length-weight relationships and related statistics of 73 populations of fish occurring in inland waters of Nigeria. Naga ICLARM Q1949-52.

KogaT.HenmiY.MuraiM. (1993) Sperm competition and the assurance of underground copulation in the sand bubbler crab Scopimera globosa (Brachyura, Ocypodidae). J. Crust. Biol.13134-137.

LedesmaF.M.MolenV.BaronP.J. (2010) Sex identification of Carcinus maenas by analysis of carapace geometrical morphometry. J. Sea Res.63213-216.

MacnaeW. (1968) A general account of the fauna and flora of mangrove swamps and forests in the Indo-West-Pacific region. Adv. Mar. Biol.673-270.

MoutopoulosD.K.StergiouK.I. (2002) Weight-length and length-length relationships for 40 fish species of the Aegean Sea (Hellas). J. Appl. Ichthyol.18200-203.

NgP.K.L. (1988) The Freshwater Crabs of Peninsular Malaysia and Singapore pp. 1-156 Figs. 1-63 4 color plates. Department of Zoology National University of Singapore Shinglee Press Singapore.

OluwatoyinA.AkintadeA.EdwinC.VictorK. (2013) A study of length-weight relationship and condition factor of west African blue crab (Callinectes pallidus) from Ojo Creek, Lagos, Nigeria. Am. J. Res. Commun.1102-114.

OnoY. (1965) On the ecological distribution of ocypodid crabs in the estuary. Mem. Fac. Sci. Kyushu Univ. Ser. E (Biol.)41-60.

PaulyD. (1983) Some methods for the assessment of tropical fish stocks. FAO Fish. Techn. Pap. 234 52 pp.

SafaieM.KiabiB.PazookiJ.ShokriM.R. (2013) Growth parameters and mortality rates of the blue swimming crab, Portunus segnis (Forskal, 1775) in coastal waters of Persian Gulf and Gulf of Oman, Iran. Indian J. Fish.609-13.

SahooD.PandaS.GuruB.C. (2011) Studies on reproductive biology and ecology of blue swimming crab Portunus pelagicus from Chilika Lagoon, Orissa, India. J. Mar. Biol. Assoc.91257-264.

SangunL.TureliC.KamcaE.DuysakO. (2009) Width/length-weight and width length relationships for 8 crab species from north-Mediterranean coast of Turkey. J. Anim. Vet. Adv.875-79.

SereneR.MoosaM.K. (1981) Description de Scopimera gordonae sp. nov. (Crustacea, Decapoda, Brachyura), une espece des eaux orientales d’Indonesia. Bull. Inst. R. Sci. Nat. Belg.531-9.

SharifianS.KamraniE. (2015) The morphometric variation of freshwater crab Sodhiana iranica from southern Iran. J. Persian Gulf (Mar. Sci.)643-52.

SharifianS.KamraniE.SafaieM.SharifianS. (2017) Population structure and growth of freshwater crab Sodhiana iranica from the south of Iran. Fundam. Appl. Limnol.189341-349.

SilasE.G.SankarankuttyC. (1967) Field investigations on the shore crabs of the Gulf of Mannar and Palk Bay, with special reference to the ecology and behaviour of the pellet crab Scopimera proxima kemp. Mar. Biol. Assoc. India (Symp. Ser.)21008-1025.

SuzukiH. (1983) Studies on the life history of sand bubble crab Scopimera globosa de Haan, at Tomioka Bay, west Kyushu- I. Seasonal changes of population structure. Mem. Fac. Fish. Kagoshima Univ.3255-69.

TakahasiS. (1935) Ecological notes on the ocypodian crabs (Ocypodidae) in Formosa, Japan. Annot. Zool. Jpn.1579-87.

TitgenR.H. (1982) The Systematics and Ecology of the Decapods of Dubai and their Zoogeographical Relationships to the Arabian Gulf and the Western Indian Ocean 292 pp. Doctoral Thesis Texas A & M University College Station TX USA.

TweedieM.W.F. (1950) Notes on grapsoid crabs from Raffles Museum. 2 on the habits of three ocypodid crabs. Bull. Raffles Mus.23317-324.

VanniniM.ChelazziG. (1985) Adattamenti comportamentalialla vita intertidale tropicale. Oebalia (NS)1123-37.

WadaK. (1976) The distribution of three species of ocypodid crabs (Crustacea: Brachyura) in the estuary of the Waka River, mainly examined in relation to the granularity of substratum. Physiol. Ecol. Jpn.17321-326.

WadaK. (1981) Growth, breeding and recruitment in Scopimera globosa and Ilyoplax pusillus (Crustacea, Ocypodidae) in the estuary of Waka River, middle Japan. Publ. Seto Mar. Biol. Lab.26243-259.

WadaK. (1982) Substratum preference and feeding activity in Scopimera globosa de Haan and Ilyoplax pusillus (de Haan) (Crustacea: Ocypodidae). Benthos Re. Jpn.2314-26.

WadaK. (1983a) Spatial distributions and population structures in Scopimera globosa and Ilyoplax pusillus (Decapoda: Ocypodidae). Publ. Seto Mar. Biol. Lab.27281-291.

WadaK. (1983b) Temporal changes of spatial distributions of Scopimera globosa and Ilyoplax pusillus (Decapoda: Ocypodidae) at co-occurring areas. Jpn. J. Ecol.331-9.

WarnerG.F. (1969) The occurrence and distribution of crabs in a Jamaican mangrove swamp. J. Anim. Ecol.38379-389.

YamaguchiT.TanakaM. (1974) Studies on the ecology of a sand bubbler crab, Scopimera globosa de Haan–I. Seasonal variation of population structure. Jpn. J. Ecol.24165-174.

YamaguchiT.NoguchiY.OgawaraN. (1979) Studies of the courtship behaviour and copulation of the sand bubbler crab Scopimera globosa. Publ. Amakusa Mar. Biol. Lab.531-44.

ZaghloulS.S. (2003) Studies on the reproductive biology and rearing of portunid crabs in Suez Bay. PhD thesis Suez Canal University Ismailia Egypt.

ZarJ.H. (1999) Biostatistical Analysis. Prentice HallNew Jersey, NJ, USA.

Zimmer-FaustR.K. (1987) Substrate selection and use by a deposit feeding crab. Ecology68955-970.


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    Sampling locations at southern Golshahr, Bandar Abbas, Iran, on the Persian Gulf for the species Scopimera crabricauda Alcook, 1900 from January 2016 to January 2017.

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    (A) Mean size of carapace width (CW) and carapace length (CL) with standard error for both sexes. (B) Mean total weight (TW) with standard error for both sexes.

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    Number of individuals of S. crabricauda collected from January 2016 to January 2017.

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    Collected number of males (A) and females.

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    Number of males (A) and females collected at three intertidal levels.

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    Length to width relationship in male (A) and female (B) crabs.

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    (A) Carapace width to total weight relationship and (B) Carapace length to total weight relationship in male crabs.

  • View in gallery

    (A) Carapace width to total weight relationship and (B) Carapace length to total weight relationship in female crabs.


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