Biologia populacional e ecologia trófica de Cardisoma guanhumi Latreille, 1825 em um manguezal de acesso restrito em Itamaracá, Pernambuco, Brasil

Costa, Denise Fabiana de Moraes; Schwamborn, Ralf

doi:10.5914/tropocean.v44i2.8037

Cited by 5 publications

(4 citation statements)

References 10 publications

(15 reference statements)

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“…Codes for locations are as follows: 1: Dade County, Florida (U.S.A); 2: El Maíz, Zapata (Cuba); 3: Guamutal, Zapata (Cuba); 4: La Arenera, Zapata (Cuba); 5: Tampamachoco, Veracruz, (Mexico); 6: Majahual, Veracruz (Mexico); 7: Tuxpan, Veracruz (Mexico); 8: Sontecomapan, Veracruz (Mexico); 9: Puerto Rico; 10: Maunabo (Puerto Rico); 11: Jobos Bay (Puerto Rico); 12: San Andrés Island (Colombia); 13–14: Tayrona‐Salamanca National Parks, Magdalena (Colombia); 15: West Coast (Venezuela); 16: Central Coast (Venezuela); 17: Triste Gulf (Venezuela); 18: Miranda (Venezuela); 19: East Coast (Venezuela); 20: Cispatá Bay (Colombia); 21: Turbo, Antioquia (Colombia); 22: Cumbe, Ceara, (Brazil); 23: Imburana, Rio Grande do Sul (Brazil); 24: Natal, Rio Grande do Sul (Brazil); 25: Itamaracá, Pernambuco (Brazil); 26: Southern Bahía (Brazil); 27: São Paulo (Brazil); 28: Babitonga Bay, Santa Catarina (Brazil). Bibliographic references for each study site are provided in Table S2; Cardona et al., 2019; Hernández‐Maldonado & Campos, 2015; Morales‐Costa & Schwamborn, 2016; Quiñones‐Llópiz & Rodríguez‐Fourquet, 2019; Salinas, 2012; Shinozaki‐Mendes et al., 2013; Silva et al., 2014.…”

Section: Resultsmentioning

confidence: 99%

Is the threatened land crab Cardisoma guanhumi conquering human‐dominated systems?

Riascos,

Obonaga,

Ramos

2024

Ecology and Evolution

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Land use changes are heralded as a major driver of biodiversity loss. However, recent findings show that cities, perhaps the most radical habitat transformation, sustain increasing numbers of threatened species. This emerging trend has been mostly chronicled for vertebrates from landlocked cities, although loss of biodiversity and rates or urbanization are higher in coastal marine systems. To advance our understanding on how threatened species may conquer human‐dominated systems, we studied the threatened edible crab Cardisoma guanhumi and assessed how it is proliferating in croplands and urban systems at different spatial scales and whether populations show consequences of long‐term exploitation. We gathered the data on crab populations covering the whole distribution range, including three countries reporting this as a threatened species. The abundance, distribution, and size structure of crab populations among different land uses at local scales were compared and published data for populations thriving in different habitats throughout their distribution range were compiled. We found that at local scale this species is able to thrive in natural and human‐disturbed habitats, where food sources are heavily altered. At larger scales, the species showed no differences in abundance and size structure among natural and anthropogenic habitats. In areas near the southern distribution edge, crab populations were more abundant and composed of larger animals in urban areas and croplands than those in natural habitats, suggesting that human‐disturbed systems are stepping stones to extend the geographic range. However, we found a long‐term reduction in maximum body size, exacerbated by land use changes, that likely reflects exploitation regimes consistently targeting larger crabs. Despite its status as a threatened species, the long history of human exploitation combined with livestock farming practices may explain the proliferation of this crab in human‐dominated systems, which emphasize the need to consider conservation in human‐dominated systems.

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Section: Resultsmentioning

confidence: 99%

Is the threatened land crab Cardisoma guanhumi conquering human‐dominated systems?

Riascos,

Obonaga,

Ramos

2024

Ecology and Evolution

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“…Gil (2009) verificou, em São Paulo, que a LC variava entre 6,2 cm e 6,7 cm (média de 6,7 cm). A LC de indivíduos na Ilha de Itamaracá-PE variou entre 2,0 cm e 7,0 cm (média de 4,3 cm) (Costa & Schwamborn, 2016). Oliveira-Neto et al (2014) afirmam que, em Santa Catarina, é frequente encontrar indivíduos com 11 cm de LC.…”

Section: Resultsunclassified

“…Para fins de tipificação e comercialização do guaiamum, uma característica bastante relevante do animal diz respeito ao tamanho da sua carapaça e quelípodos, quando quanto maior estes forem, maior será o valor agregado ao produto. Outro fator igualmente significativo para a valorização comercial de C. guanhumi é o sexo: as fêmeas são, em geral, mais procuradas pelos consumidores, devido ao seu sabor ser mais marcante que o dos machos (Costa & Schwamborn, 2016) (Brasil, 2006;2018ab) que, tendo em vista a degradação ambiental dos manguezais e as técnicas aplicadas na captura e transporte do guaiamum, visam regulamentar a coleta desse crustáceo, de modo a reduzir o grau de ameaça sobre a sua espécie.…”

Section: Introductionunclassified

Do manguezal à panela: Aspectos bioecológicos da cadeia produtiva do Guaiamum (Cardisoma guanhumi Latreille, 1825)

Júnior

Santana²,

Brito³

et al. 2019

J. Env. Anal. Progr.

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O manguezal é responsável por diversos serviços ecossistêmicos e ambientais, e muitas das suas espécies associadas possuem um grande apelo comercial, como o guaiamum (Cardisoma guanhumi Latreille, 1825), apreciado na gastronomia e importante fonte de renda para diversas comunidades. Porém, a degradação dos manguezais e a exploração desta espécie são fatores que podem ameaçá-la. O estudo buscou examinar os aspectos bioecológicos de C. guanhumi frente à sua cadeia produtiva. Foram observadas as técnicas e os atores das diferentes etapas desta cadeia. O método de captura mais utilizado é a ratoeira. Na engorda, os animais são dispostos em diferentes tipos de viveiros e com alimentos variados. Os mesmos são transportados em sacos de ráfia, prática que causa a mortalidade de alguns indivíduos. Na comercialização, os animais são expostos em cordas em tripés. Nesta fase não foi identificada a ocorrência de danos físicos ou morte aos animais. Nos locais de consumo, geralmente ocorre uma segunda engorda dos guaiamuns e o seu abatimento. Em todas as etapas da cadeia produtiva, é notório o conhecimento dos atores acerca da bioecologia do guaiamum. O não cumprimento das exigências legais foi identificado em algumas etapas, como o fato de se coletar fêmeas. O transporte dos guaiamuns foi a etapa identificada como a mais danosa aos animais, pois é quando ocorre o maior número de danos físicos e mortes. Assim, faz-se necessária a adequação legal da prática, especialmente da forma de transporte, bem como a implantação de políticas de suporte aos catadores, regulamentando a sua atividade.

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“…); mudanças orbitais (MILANKOVITCH, 1920;WERNER e WOLFF, 2007;SHEVENELL et al, 2007;etc. ); paleovegetação (SALGADO-SALOURIAU et al, 1998;; geomorfologia (AB'SABER, 1957, 1969, 1977SOUZA e PEREZ FILHO, 2016PEREZ FILHO et al, 2020, 2021etc. ); entre outros.…”

Section: Objetivos Específicosunclassified

Reconstituição Paleoambiental em baixos terraços fluviais no médio curso do Rio Grande (BA), por meio de Biomineralizações de sílica e Luminescência Opticamente Estimulada (LOE)

Oldack Barcelos Ferreira Machado

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This thesis is part of the CNPQ project 'Evolution of landscape and geochronology of surface covers in low river terraces in the Middle Course of Rio Grande', of the Institute of Geosciences of UNICAMP, which relates the application of the geomorphological approach throughout the middle course of Rio Grande (state of Bahia) with discussions on genesis and space-time evolution of river terraces to understand the dynamics of surface cover. The characterization of the landscape's surface structure is fundamental to remake temporal and genetic hiatus related to the evolution of terraces and surface coverings associated with them, as well as to correlate them with results already obtained in other areas of The Brazilian territory. Considering the systemic nature of the research, the contribution of this Master's thesis is to infer possible variations in vegetation due to changes in climate and, thus, reconstitute the paleoenvironmental conditions associated with geomorphological and river processes that occurred in this basin. The methodology consisted of an integrated analysis involving: the dynamics and characteristics of surface covers of river terraces; silica biomineralizations (phytoliths, sponge spicules and diatom frustules); particle size and geochemical analyses; and ages obtained from the dates by Optically Stimulated Luminescence (OSL). Nine sampling points were selected for analysis on river terraces. Phytolith analyses of all profiles showed the same trends, despite variations in granulometry, hydrodynamic deposition conditions and geochemistry between the profiles. There were no major changes in vegetation cover in the middle course of Rio Grande in the Holocene, with predominance of open vegetation with occasional occurrence of forest remnants. However, it was possible to observe small variations that identified relatively drier periods in the Upper Pleistocene and Middle Holocene, more humid ones around 1,430 years BP, and humidity variations in the last 420 years. The hydrodynamic conditions of surface cover deposition were predominantly of high energy throughout the entire period studied, with the exception of two episodes of lower energy, recorded around 5260 and 1400 years BP. This last episode also corresponded to the highest tree density observed, indicating a period of greater humidity. The analysis of biomineralizations associated with pedogeomorphological properties has been shown to be very effective in understanding landscape evolution and environmental changes.

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Biologia populacional e ecologia trófica de Cardisoma guanhumi Latreille, 1825 em um manguezal de acesso restrito em Itamaracá, Pernambuco, Brasil

Cited by 5 publications

References 10 publications

Is the threatened land crab Cardisoma guanhumi conquering human‐dominated systems?

Is the threatened land crab Cardisoma guanhumi conquering human‐dominated systems?

Do manguezal à panela: Aspectos bioecológicos da cadeia produtiva do Guaiamum (Cardisoma guanhumi Latreille, 1825)

Reconstituição Paleoambiental em baixos terraços fluviais no médio curso do Rio Grande (BA), por meio de Biomineralizações de sílica e Luminescência Opticamente Estimulada (LOE)

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