Abstract:ABSTRACT. A case of dimorphism among the males of the pinnotherid crab, Zaops ostreum (Say, 1817), is reported. The morpho1ogical features ofthe two types ofmales are also given. KEY WORDS. Zaops ostreulIl, dimorphism, males A study being carried out to determine the diversity of carcinofauna of the estuaries ofthe State ofRio Grande do Norte has recorded Zaops ostreum (Say, 1817) associated with the oyster Crassostrea rhizophorae in the estuary near Macau , Rio Grande do Norte, Brazil. Though C. rhizophora is… Show more
“…During the dry season occurred a high decrease of non-ovigerous females (no non-ovigerous females found from September to December), indicating a reproductive peak during this season. Contrasting with the results obtained by Sankarankutty and Ferreira (2001) in C. rhizophorae at Macau Estuary (State of Rio Grande do Norte, Northeast Brazil), most of our occurrences were female-male couples (mean 79.29%) without isolated males and triple occupancy, while the previous authors reported lower female-male couples' rate (28,83%), as well as isolated males and triple occupancy (Sankarankutty and Ferreira, 2001). Nonetheless, no female-male couples were recorded on September at Barra de Catuama (this study) and Macau Estuary (Sankarankutty and Ferreira, 2001).…”
Section: Discussioncontrasting
confidence: 92%
“…Contrasting with the results obtained by Sankarankutty and Ferreira (2001) in C. rhizophorae at Macau Estuary (State of Rio Grande do Norte, Northeast Brazil), most of our occurrences were female-male couples (mean 79.29%) without isolated males and triple occupancy, while the previous authors reported lower female-male couples' rate (28,83%), as well as isolated males and triple occupancy (Sankarankutty and Ferreira, 2001). Nonetheless, no female-male couples were recorded on September at Barra de Catuama (this study) and Macau Estuary (Sankarankutty and Ferreira, 2001). These results obtained in tropical environments highly contrast with results obtained by Christensen and McDermott (1958) at the Bay Shore Channel (USA), were reproductive seasons seem be rather accentuated, with distinct periods for double occupancy and prolonged declines on male abundances after copulation.…”
Section: Discussioncontrasting
confidence: 92%
“…Ecological interactions involving the pea crab Z. ostreum and other species of the family Ostreidae have been previously discussed, mainly in association with C. rhizophorae and C. virginica (Stauber, 1945;O'Beirn and Walker, 1999;Sankarankutty and Ferreira, 2001;Bezerra et al, 2006;Sabry et al, 2011;Hanke et al, 2015;De Gier and Becker, 2020). Studies detected that Z. ostreum may provoke harms/injuries in soft-parts-oyster of C. rhizophorae and C. virginica during the feeding behaviour (Hanke et al, 2015), particularly in gills/branchial chambers, including demibranchs, and on the adductor muscle (Stauber, 1945;Christensen and McDermott, 1958), recognizing a disharmonious relationship with Z. ostreum acting as parasite in the oysters (Nascimento and Pereira, 1980).…”
Section: Discussionmentioning
confidence: 99%
“…Sustent., 2023, vol. 10, n. 24, p. 183-195. The genus Zaops Rathbun, 1900 comprises three valid species of the Family Pinnotheridae found in West Atlantic waters, among which only Zaops ostreum (Say, 1817) is reported on Brazilian coastal environments from Northeast to Southern Brazil (Nascimento and Pereira, 1980;Martins and D'Incao, 1996;Sankarankutty and Ferreira, 2001;Bezerra et al, 2006;Felder et al, 2009;Almeida et al, 2010;Boehs et al, 2012). Z. ostreum is characterized by arched-shape orbits, cephalothorax curved on both sides of the carapace, clypeus emarginate at anterior end, and chelipeds covered with white hairs (Say, 1817;Melo, 1996).…”
Section: Introductionmentioning
confidence: 99%
“…Z. ostreum is characterized by arched-shape orbits, cephalothorax curved on both sides of the carapace, clypeus emarginate at anterior end, and chelipeds covered with white hairs (Say, 1817;Melo, 1996). It is known to be parasitic on bivalve oysters of the genus Crassostrea Sacco, 1897, including Crassostrea rhizophorae (Guilding, 1828) and Crassostrea virginica (Gmelin, 1791) (Stauber, 1945;Christensen and McDermott, 1958;Beach, 1969;Nascimento and Pereira, 1980;Martins and D'Incao, 1996;Melo, 1996;O'Beirn and Walker, 1999;Sankarankutty and Ferreira, 2001;McDermott, 2009;Almeida et al, 2010;Hanke et al, 2015), which can cause economic losses in aquaculture. Z. ostreum has an interspecific relationship with the oysters' species, feeding on the phytoplankton and zooplankton that these oysters filter (McDermott, 1997;Almeida et al, 2010;Hanke et al, 2015).…”
In this study, we report the association between the pea crab Zaops ostreum (Say, 1817) living in the oyster Crassostrea brasiliana (Lamarck, 1819), collected in an estuarine region of Northeast Brazil. Oysters were collected along the mouth of the Santa Cruz Channel, Barra de Catuama (State of Pernambuco), between 2016 and 2017. A total of 224 oysters and 38 crabs were collected. Relative density of Z. ostreum was 16.96% (7.14% for males and 9.82% for females) in analyzed oysters. Prevalence during dry season ranged from 6.25% to 15.60%, whereas in rainy season ranged from 3.10% to 12.50%. Z. ostreum proportion of females to males was 1:0.73. Most occurrences were female-male couples (79.29%) with no isolated males or triple occupancy being observed. Female-male couples and ovigerous females were detected throughout most of the studied period, possibly indicating a distinct reproduction behaviour on tropical areas. This association expands knowledge on the aspects of social behaviour and host range of Z. ostreum, remarkably associated with bivalves of the Family Ostreidae.
“…During the dry season occurred a high decrease of non-ovigerous females (no non-ovigerous females found from September to December), indicating a reproductive peak during this season. Contrasting with the results obtained by Sankarankutty and Ferreira (2001) in C. rhizophorae at Macau Estuary (State of Rio Grande do Norte, Northeast Brazil), most of our occurrences were female-male couples (mean 79.29%) without isolated males and triple occupancy, while the previous authors reported lower female-male couples' rate (28,83%), as well as isolated males and triple occupancy (Sankarankutty and Ferreira, 2001). Nonetheless, no female-male couples were recorded on September at Barra de Catuama (this study) and Macau Estuary (Sankarankutty and Ferreira, 2001).…”
Section: Discussioncontrasting
confidence: 92%
“…Contrasting with the results obtained by Sankarankutty and Ferreira (2001) in C. rhizophorae at Macau Estuary (State of Rio Grande do Norte, Northeast Brazil), most of our occurrences were female-male couples (mean 79.29%) without isolated males and triple occupancy, while the previous authors reported lower female-male couples' rate (28,83%), as well as isolated males and triple occupancy (Sankarankutty and Ferreira, 2001). Nonetheless, no female-male couples were recorded on September at Barra de Catuama (this study) and Macau Estuary (Sankarankutty and Ferreira, 2001). These results obtained in tropical environments highly contrast with results obtained by Christensen and McDermott (1958) at the Bay Shore Channel (USA), were reproductive seasons seem be rather accentuated, with distinct periods for double occupancy and prolonged declines on male abundances after copulation.…”
Section: Discussioncontrasting
confidence: 92%
“…Ecological interactions involving the pea crab Z. ostreum and other species of the family Ostreidae have been previously discussed, mainly in association with C. rhizophorae and C. virginica (Stauber, 1945;O'Beirn and Walker, 1999;Sankarankutty and Ferreira, 2001;Bezerra et al, 2006;Sabry et al, 2011;Hanke et al, 2015;De Gier and Becker, 2020). Studies detected that Z. ostreum may provoke harms/injuries in soft-parts-oyster of C. rhizophorae and C. virginica during the feeding behaviour (Hanke et al, 2015), particularly in gills/branchial chambers, including demibranchs, and on the adductor muscle (Stauber, 1945;Christensen and McDermott, 1958), recognizing a disharmonious relationship with Z. ostreum acting as parasite in the oysters (Nascimento and Pereira, 1980).…”
Section: Discussionmentioning
confidence: 99%
“…Sustent., 2023, vol. 10, n. 24, p. 183-195. The genus Zaops Rathbun, 1900 comprises three valid species of the Family Pinnotheridae found in West Atlantic waters, among which only Zaops ostreum (Say, 1817) is reported on Brazilian coastal environments from Northeast to Southern Brazil (Nascimento and Pereira, 1980;Martins and D'Incao, 1996;Sankarankutty and Ferreira, 2001;Bezerra et al, 2006;Felder et al, 2009;Almeida et al, 2010;Boehs et al, 2012). Z. ostreum is characterized by arched-shape orbits, cephalothorax curved on both sides of the carapace, clypeus emarginate at anterior end, and chelipeds covered with white hairs (Say, 1817;Melo, 1996).…”
Section: Introductionmentioning
confidence: 99%
“…Z. ostreum is characterized by arched-shape orbits, cephalothorax curved on both sides of the carapace, clypeus emarginate at anterior end, and chelipeds covered with white hairs (Say, 1817;Melo, 1996). It is known to be parasitic on bivalve oysters of the genus Crassostrea Sacco, 1897, including Crassostrea rhizophorae (Guilding, 1828) and Crassostrea virginica (Gmelin, 1791) (Stauber, 1945;Christensen and McDermott, 1958;Beach, 1969;Nascimento and Pereira, 1980;Martins and D'Incao, 1996;Melo, 1996;O'Beirn and Walker, 1999;Sankarankutty and Ferreira, 2001;McDermott, 2009;Almeida et al, 2010;Hanke et al, 2015), which can cause economic losses in aquaculture. Z. ostreum has an interspecific relationship with the oysters' species, feeding on the phytoplankton and zooplankton that these oysters filter (McDermott, 1997;Almeida et al, 2010;Hanke et al, 2015).…”
In this study, we report the association between the pea crab Zaops ostreum (Say, 1817) living in the oyster Crassostrea brasiliana (Lamarck, 1819), collected in an estuarine region of Northeast Brazil. Oysters were collected along the mouth of the Santa Cruz Channel, Barra de Catuama (State of Pernambuco), between 2016 and 2017. A total of 224 oysters and 38 crabs were collected. Relative density of Z. ostreum was 16.96% (7.14% for males and 9.82% for females) in analyzed oysters. Prevalence during dry season ranged from 6.25% to 15.60%, whereas in rainy season ranged from 3.10% to 12.50%. Z. ostreum proportion of females to males was 1:0.73. Most occurrences were female-male couples (79.29%) with no isolated males or triple occupancy being observed. Female-male couples and ovigerous females were detected throughout most of the studied period, possibly indicating a distinct reproduction behaviour on tropical areas. This association expands knowledge on the aspects of social behaviour and host range of Z. ostreum, remarkably associated with bivalves of the Family Ostreidae.
A total of 272 species of brachyuran crabs are reported from marine and estuarine environments in northern and northeast Brazil. The checklist is derived from the literature published from 1847 to 2008, and includes all species that have been reported at least once from the study area. It is also partially supported by material deposited in the crustacean collection of the Departamento de Oceanografia, Universidade Federal de Pernambuco, city of Recife, Brazil (DOUFPE). The families containing the highest number of species in northern and northeastern Brazil are Majidae (31), Portunidae (22), Epialtidae (20), Panopeidae (20), and Xanthidae (18). The remaining species are distributed in 39 families. The analysis of the distribution of the species in the region, allows for identification of four patterns of longitudinal distribution (western Atlantic, Amphi-Atlantic, Amphi-American, and circumtropical species) and, in the western Atlantic, six patterns of latitudinal distribution (Virginian, Carolinian, Antillean, Central-South American, Boreal, and Endemic). Two non-indigenous species have also been reported. Most of the species represented in northern and northeastern Brazil have Antillean (94 species; 34.5%) and Carolinian (75 species; 27.6%) pattern of distribution.
This study reports the occurrence of Austinixa bragantina Coelho, 2005; A. leptodactyla (Coelho, 1997) and Zaops ostreum (Say, 1817) for the State of Ceará, Northeast Brazil. These records represent the first account of the family Pinnotheridae de Haan, 1883 for the coast of Ceará. A. bragantina was collected on May and June 1995 at Futuro Beach, municipality of Fortaleza (3°42'S, 38°27'W). This species was previously known only for the type locality, Canela Island, Bragança, Pará, Brazil. A. leptodactyla was collected on November 2004 at Baleia Beach, municipality of Itapipoca (3°08'S, 39°27'W) and Z. ostreum was obtained from the oyster Crassostrea rhizophorae Guilding, 1828, collected on November 2005 at the Jaguaribe River estuary, municipality of Fortim (4°24'S, 37°46'W). Biogeographic considerations regarding the three species and an updated list of all known Brazilian pinnotherid species along with their_geographic distribution are also provided.
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