Observation on the Occurrence of Uca victoriana von Hagen (Decapoda, Brachyura, Ocypodidae) on the Coast of Rio de Janeiro, Brazil

Bedê, Luciane M.; Oshiro, Lídia Miyako Yoshii; Melo, Gustavo Augusto Schmidt de

doi:10.1590/s1519-69842007000400036

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…(M.) victoriana in Pernambuco and Bahia considerably extends its geographical range on the Brazilian coast. Bede ˆet al (2007) recently reported it from the State of Rio de Janeiro, extending its southern distribution. According to these authors, the small size of U.…”

Section: Discussionmentioning

confidence: 99%

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More common than reported: range extension, size–frequency and sex-ratio of Uca (Minuca) victoriana (Crustacea: Ocypodidae) in tropical mangroves, Brazil

Castiglioni

Almeida

2010

Mar. Biodivers. Rec.

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The fiddler crab Uca (Minuca) victoriana von Hagen, 1987 has been reported, until recently, only from the type locality at Vito ´ria, State of Espı ´rito Santo, Brazil. We report here, for the first time, the occurrence of U. (M.) victoriana in estuaries of the States of Bahia and Pernambuco, north-eastern Brazil, extending its distribution; as well as some aspects of its population biology. For the population study, four sites were defined in mangroves of the Mamucabas and Ariquinda ´Rivers, Pernambuco, on different types of substrate, and sampled monthly during spring low tide from April 2008 through to March 2009. A total of 41 specimens were obtained in June 2008 in the Arinquinda ´River, of which 25 were males, 16 nonovigerous females and 1 ovigerous female. In the Mamucabas River, 772 crabs were collected over the year, including 472 males, 300 non-ovigerous females and 2 ovigerous females. In both areas, the U. (M.) victoriana population showed a unimodal size -frequency distribution, with males and females (ovigerous and non-ovigerous) similar in size (7.46 + 1.60 mm for males and 7.09 + 1.45 mm for females; t ¼ 20.744; P . 0.05). The overall sex-ratio (1:1.57) differed significantly from the expected 1:1 proportion1 (x2 ¼ 38.32; P , 0.05). Study of material deposited in Brazilian carcinological collections revealed several misidentified specimens, especially as U. (M.) rapax and U. (M.) burgersi. Some morphological characters to distinguish among these species are presented.

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Section: Discussionmentioning

confidence: 99%

“…Uca (M.) victoriana was until recently known only from the type locality at Vito ´ria, State of Espı ´rito Santo (von Hagen, 1987). Bede ˆet al (2007) reported it from farther south in the State of Rio de Janeiro.…”

Section: Introductionmentioning

confidence: 99%

More common than reported: range extension, size–frequency and sex-ratio of Uca (Minuca) victoriana (Crustacea: Ocypodidae) in tropical mangroves, Brazil

Castiglioni

Almeida

2010

Mar. Biodivers. Rec.

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“…Since 5 of the species occur in North America, details of their morphologies have been described elsewhere (Barnwell & Thurman 1984). A dichotomous key (Melo 1996) was used to identify the Brazilian fiddler crabs, together with supple mentary descriptions of the more cryptic species (Crane 1943, Holthuis 1967, Chase & Hobbs 1969, Coelho 1972, von Hagen 1987, Tavares & de Mendonça 2003, Bedê et al 2007). Although there is some overlap between the morphological characters used to discriminate among species and those captured by the landmark data (see below), specimens were as signed to species prior to digitizing landmarks.…”

Section: Species Identificationmentioning

confidence: 99%

Intraspecific variation in carapace morphology among fiddler crabs (Genus Uca) from the Atlantic coast of Brazil

Hampton

Hopkins²,

McNamara³

et al. 2014

Aquat. Biol.

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Isolation due to geographical barriers should promote genetic and morphological divergence among populations. Marine currents flowing in opposing directions along landmasses can constitute barriers that isolate populations dependent upon aquatic dispersal. The distribution of fiddler crabs (genus Uca) is regulated primarily by the oceanic transport of their planktonic larvae and by available adult habitat. Along the Brazilian coast of eastern South America, the flow of 2 major oceanic currents separates northern from southern Uca populations, which may promote intraspecific divergence in 'trans-Brazilian' species. Populations of 10 Uca species were sampled at 64 locations north and south of the Ponta do Calcanhar, Rio Grande do Norte, Brazil. Carapace shape was assessed using geometric morphometrics to analyze 12 surface landmarks in 1319 female crabs. Carapace shape differs significantly in each species. In morphospace, the carapace forms of the 10 species appear to separate into traditional subgeneric clusters. Within the 8 species exhibiting trans-Brazilian distributions, northern and southern populations show distinct carapace differences. Depending on species, either the hepatic or the branchial region is larger in northern populations. Since significant genetic variability among such populations has not been confirmed, divergence in carapace shape suggests significant ecological modulation of phenotype within each species. Apparently, environmental differences between northern and southern localities exert a greater impact on carapace morphology than impeded gene flow. The drivers underpinning diversification of carapace shape remain unknown, however.

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Geographical variation in osmoregulatory abilities among populations of ten species of fiddler crabs from the Atlantic coast of Brazil: A macrophysiological analysis

Thurman

Faria

McNamara

2017

Journal of Experimental Marine Biology and Ecology

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Observation on the Occurrence of Uca victoriana von Hagen (Decapoda, Brachyura, Ocypodidae) on the Coast of Rio de Janeiro, Brazil

Cited by 6 publications

References 8 publications

More common than reported: range extension, size–frequency and sex-ratio of Uca (Minuca) victoriana (Crustacea: Ocypodidae) in tropical mangroves, Brazil

More common than reported: range extension, size–frequency and sex-ratio of Uca (Minuca) victoriana (Crustacea: Ocypodidae) in tropical mangroves, Brazil

Intraspecific variation in carapace morphology among fiddler crabs (Genus Uca) from the Atlantic coast of Brazil

Geographical variation in osmoregulatory abilities among populations of ten species of fiddler crabs from the Atlantic coast of Brazil: A macrophysiological analysis

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