Diversity of decapod crustaceans at the interface of unconsolidated seabed areas and rocky shores in tropical/subtropical Brazil

Fransozo, Adílson; Furlan, Maysa; Fransozo, Vívian; Bertini, Giovana; Costa, Rogério Caetano da; Fernandes-Góes, Lissandra Corrêa

doi:10.2989/1814232x.2012.725514

Cited by 15 publications

(15 citation statements)

References 26 publications

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“…According to Mantelatto and Garcia (2000), S. haemastoma is the most preferred shell of the diogenid hermit crab typical of intertidal regions, Calcinus tibicen (Herbst, 1791). The same authors highlighted the great abundance of this gastropod in a sublittoral of unconsolidated substrate, which justifies the number of this species' shells being used both by L. loxochelis (Martinelli and Mantelatto, 1999 and present work), and I. sawayai (Fantucci et al, 2008), that inhabits shallow regions, next to this coast (see Fransozo et al, 2012). Interspecific competition has huge influence in the pattern of shell occupation.…”

Section: Discussionsupporting

confidence: 53%

Shell occupation by the South Atlantic endemic hermit crab Loxopagurus loxochelis (Moreira, 1901) (Anomura: Diogenidae)

et al. 2013

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-The evaluation of population characteristics, particularly those of endemic species, aids in population preservation and management. Hermit crabs present an innate behavior of occupying shells, which tends to individual needs and limits their distribution. This study characterized the pattern of occupation of gastropod shells by the hermit Loxopagurus loxochelis in three bays of the southwestern coast of Brazil. Monthly collections were made from January/1998 to December/1999 in the bays Ubatumirim (UBM), Ubatuba (UBA) and Mar Virado (MV) with a shrimping boat. Overall, ten species of gastropod shells were occupied by L. loxochelis. The shell of Olivancillaria urceus represented 66.8% of those occupied. Morphometric relationships demonstrated a differential occupation of the more abundant shells among demographic groups, where most of the males occupied O. urceus, non-ovigerous females occupied O. urceus and Buccinanops cochlidium, and ovigerous females occupied B. cochlidium and Stramonita haemastoma. Most of the individuals occupied the more abundant shells, considered adequate for the morphology of this hermit crab species. Thus, the studied bays seem to be stable and propitious environments for population perpetuation and the settlement of new individuals.

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Section: Discussionsupporting

confidence: 53%

Shell occupation by the South Atlantic endemic hermit crab Loxopagurus loxochelis (Moreira, 1901) (Anomura: Diogenidae)

et al. 2013

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“…Several studies with old information was recently published with this purpose (Fransozo et al, 2011;2012;Andrade et al, 2013a, b, c;Baeza et al, 2013;Furlan et al, 2013;herein). In this study, it was found that the environmental factors showed distinct variations for both sampled sites, being the SACW evidenced by means the decrease in the water surface temperature values at the Couves Island during spring and summer (Mantelatto & Fransozo, 1999;Negreiros-Fransozo et al, 1991).…”

Section: Discussionmentioning

confidence: 99%

“…The hermit crab Dardanus insignis (Saussure, 1858) is the most abundant hermit crab of soft bottom littoral at Southeastern Brazil (Fransozo et al, 2011;2012), being classified as one of the species that structuring the benthic mega fauna, from shallow regions to depths greater than 100 meters at southeastern of Brazilian coast (Pires, 1992). One of the main factors in the success of the hermit crabs is the flexibility of the feeding behavior (omnivorousdetritivorous) that characterizes them as opportunistic feeders, allied to the gastropod shell utilization, which promote their adaptation to any environment (Hazlett, 1981).…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of populational structure of the Hermit Crab Dardanus insignis (Anomura: Diogenidae) in a Subtropical Area of the Brazilian Coast

Frameschi¹,

Andrade²,

Fransozo³

et al. 2013

Braz. J. Aquat. Sci. Technol.

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Analysis of populational structure of the hermit crab Dardanus insignis (Anomura: Diogenidae) near coastal islands in southeastern Brazil: a study of 14 years ago. Braz. J. Aquat. Sci. Technol. 17(2):17-25. eISSN 1983-9057. DOI: 10.14210/bjast.v17.n2.p17-25. The goal of this paper was the comparison of the population structure and the reproductive period of Dardanus insignis from two islands in a subtropical area of the Brazilian coast. A total of 795 hermit crabs were obtained at Couves Island, being 56.4% males, 27.3% non-ovigerous females, 3.8% ovigerous females, and 12.5% juveniles; at Mar Virado Island a total of 336 specimens were captured, being 59.5% males, 31.8% non-ovigerous females, 4.7% ovigerous females, and 4.5% juveniles. The sex-ratio was statistically different from 1:1 in favor of males during all study period in both sites. The reproductive period is seasonal in both sites and the juveniles' recruitment occurred at the first two winter months. Only males were found in the largest size classes. Despite of the distance and environmental and biological features of each site, both populations of D. insignis showed similar characteristics.

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“…Due to SACW influence and other peculiarities of the southeastern Brazilian coast, this locality has been the target of many community studies involving species richness, abundance and diversity of decapod crustaceans, in order to better understand the dynamics of the region's biodiversity (Fransozo et al, 2012;Bertini et al, 2010a;De Léo and Pires-Vanin, 2006;Alves et al, 2013;Furlan et al, 2013;Andrade et al, 2015a). Despite the large number of studies involving the decapod crustacean community on the north coast of São Paulo, studies at more specific ecological levels, such as populations, are necessary to understand the interactions that determine the biotic dynamics in these environments (Mantelatto et al, 1995;Braga et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Population structure of the swimming crab Achelous spinicarpus (Crustacea, Portunoidea) in São Paulo northern coast, Brazil

Silva

Taddei

Bertini

et al. 2017

Neotropical Biology and Conservation

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The swimming crab Achelous spinicarpus is commonly captured as a "by catch" of the shrimp fishery. This study evaluated some aspects of the population structure of A. spinicarpus, such as sex-ratio and size classes' frequency distribution. A shrimp trawler equipped with double-rig nets was used to capture the swimming crabs at Ubatuba and Caraguatatuba areas, northern coast of São Paulo state, Brazil. A total of 1,057 individuals were collected in Ubatuba, including 598 males (525 juveniles and 73 adults) and 459 females (379 juveniles and 80 adults, including 15 ovigerous crabs). In Caraguatatuba 5,112 individuals were collected, of which 3,138 males (2,638 juveniles and 500 adults) and 1,974 females (1,746 juveniles and 228 adults, including 29 ovigerous crabs). The sex-ratio favors the number of males in both regions, probably because females have the habit of occupying deeper regions. The size classes' frequency distribution shows polymodality for both sexes, except for males in Ubatuba. This is the result of some age groups among the juveniles, which migrate to shallower areas, being affected by the fishing activity. Adults have the habit of staying in deeper areas characterized by colder waters.Keywords: Brachyura, sex-ratio, Decapoda, bycatch, size distribution. ResumoO siri candeia, Achelous spinicarpus, é comumente capturado como "by catch" da pesca camaroeira. Este estudo avaliou alguns aspectos de sua estrutura populacional, como razão sexual e distribuição de frequência em classes de tamanho. Para coletar os siris, foi utilizado um barco de pesca camaroeiro equipado com redes "double rig" nas áreas de Ubatuba e Caraguatatuba, litoral norte do estado de São Paulo, Brasil. Um total de 1.057 indivíduos foi coletado em Ubatuba, incluindo 598 machos (525 juvenis e 73 adultos) e 459 fêmeas (379 juvenis e 80 adultas, incluindo 15 ovígeras). Em Caraguatatuba, 5.112 indivíduos foram coletados, dos quais 3.138 machos (2.638 juvenis e 500 adultos) e 1.974 fêmeas (1.746 juvenis e 228 adultas, incluindo 29 ovígeras). A razão sexual favoreceu o número de machos em ambas as áreas, provavelmente devido ao hábito de as fêmeas ocuparem regiões mais profundas. A distribuição de frequência em classes de tamanho apresentou polimodalidade para ambos os sexos, exceto para machos em Ubatuba. Isso é resultado de alguns grupos etários entre os juvenis, os quais migram para áreas mais rasas, sendo afetados pela atividade pesqueira. Os adultos permanecem em áreas mais profundas, caracterizadas por águas frias. Population structure of the swimming crab Achelous spinicarpus (Crustacea, Portunoidea) in São Paulo northern coast, Brazil Palavras

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Diversity of decapod crustaceans at the interface of unconsolidated seabed areas and rocky shores in tropical/subtropical Brazil

Cited by 15 publications

References 26 publications

Shell occupation by the South Atlantic endemic hermit crab Loxopagurus loxochelis (Moreira, 1901) (Anomura: Diogenidae)

Shell occupation by the South Atlantic endemic hermit crab Loxopagurus loxochelis (Moreira, 1901) (Anomura: Diogenidae)

Comparative analysis of populational structure of the Hermit Crab Dardanus insignis (Anomura: Diogenidae) in a Subtropical Area of the Brazilian Coast

Population structure of the swimming crab Achelous spinicarpus (Crustacea, Portunoidea) in São Paulo northern coast, Brazil

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