Population estimation and site fidelity of the land crab Cardisoma guanhumi (Decapoda: Brachyura: Gecarcinidae) on Vieques Island, Puerto Rico

Forsee, Russell A.; Albrecht, Marc

doi:10.1163/193724012x626467

Cited by 11 publications

(10 citation statements)

References 18 publications

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“…This was also observed by Bozada and Páez [56], Silva and Oshiro [57], Shinozaki-Mendes et al [25], Silva et al [58] and Gil [59]. Males of this species tend to be larger than females [34,50,56,59,60].…”

Section: Size Classessupporting

confidence: 76%

“…However, some studies that used a marking method, such as Rodríguez-Fourquet and Sabat [53] that evaluated the impact of capture on the abundance, survival and demographics of C. guanhumi and Forsee and Albrecht [34], who estimated the population of C. guanhumi, both in Puerto Rico, reported at least one recapture event at the same first catch location. In this work, fidelity to the sites was evident, 77% of the individuals were recaptured in their area of origin, and the remaining individuals were recaptured in adjacent areas.…”

Section: Experiments I and Ii Seasonality And Response Of C Guanhummentioning

confidence: 99%

“…Recently, tagging with PTs was used for several species of crustaceans, such as M. rosenbergii and C. magister [29], P. camtschaticus [30,31], U. cordatus [32], B. latro [33] and C. guanhumi [18,34], but studies using this method for land crabs are still scarce. The loss of PIT tags observed in some individuals in this study did not influence our population size calculations, since all animals with heat scars were considered, and loss of heat scars was considered to be zero for this study period.…”

Section: Usefulness Of Pit Tagsmentioning

confidence: 99%

“…More recently, PIT (Passive Integrated Transponder) tagging was used for several crustacean species: Macrobrachium rosenbergii and Cancer magister [29]; Paralithodes camtschaticus [30,31]; Ucides cordatus [32]; Birgus latro [33] and Cardisoma guanhumi [18,34]. The latter studies investigated large-scale spatial displacement and abundance of individuals at different sites in Puerto Rico.…”

Section: Introductionmentioning

confidence: 99%

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Site fidelity and population structure of blue land crabs (Cardisoma guanhumi Latreille, 1825) in a restricted-access mangrove area, analyzed using PIT tags

Moraes-Costa

Schwamborn

2018

Helgol Mar Res

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Understanding the patterns of displacement and site fidelity in blue land crabs (Cardisoma guanhumi Latreille, 1825) has important implications for their conservation and management. The central objective of this study was to analyze seasonal variations in site fidelity in C. guanhumi, a species that is intensively exploited in Brazil, in spite of being part of the Official National List of Critically Endangered Species. This species currently suffers multiple severe threats, such as overharvesting and habitat destruction. C. guanhumi were sampled monthly at four fixed sectors that were delimited at the upper fringe of a restricted-access mangrove at Itamaracá Island between April 2015 and March 2016. One thousand and seventy-eight individuals were captured, measured, sexed, weighed, and their color patterns registered. Of these, 291 individuals were tagged with PIT (Passive Integrated Transponder) tags. Ninety-seven individuals (size range 27.0-62.6 mm carapace width) were successfully recaptured, totaling 135 recapture events. The largest interval between marking and recapture was 331 days. Through the use of mark-recapture-based models, it was possible to estimate the local population as being 1312 (± 417) individuals (mean density 2.23 ± 0.71 ind. m −2 ). Considering the mean density of burrow openings and individuals, there were 3.4 burrow openings per individual. C. guanhumi showed a clear philopatric behavior. Seventy-seven percent of recaptured individuals were recaptured in their sector of origin, and the remainder in an adjacent sector. Site fidelity was higher in females. Males showed minimum site fidelity in October, which is most likely related to be the onset of the reproductive season. The present study opens new perspectives for the definition of reproductive seasons, based on seasonal changes in behavior, and thus to improve the conservation of exploited and severely threatened species.

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Section: Size Classessupporting

confidence: 76%

Section: Experiments I and Ii Seasonality And Response Of C Guanhummentioning

confidence: 99%

Section: Usefulness Of Pit Tagsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Site fidelity and population structure of blue land crabs (Cardisoma guanhumi Latreille, 1825) in a restricted-access mangrove area, analyzed using PIT tags

Moraes-Costa

Schwamborn

2018

Helgol Mar Res

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“…Data from Forsee and Albrecht [13] found a significant linear correlation between burrow diameter and crab size using the equation y = 32.17 + 21(x); where y = crab mass (g) and x = burrow diameter (cm). Using the occupancy rate for each site, the total biomass surveyed was calculated.…”

Section: Resultsmentioning

confidence: 99%

Determination of the burrow shapes of Cardisoma guanhumi on Vieques, Puerto Rico

Sample¹,

Albrecht²

2016

J Coast Life Med

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Movements and site fidelity of grass shrimp (Palaemonetes pugio and P. vulgaris) in salt marsh intertidal creeks

et al. 2015

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Population estimation and site fidelity of the land crab Cardisoma guanhumi (Decapoda: Brachyura: Gecarcinidae) on Vieques Island, Puerto Rico

Cited by 11 publications

References 18 publications

Site fidelity and population structure of blue land crabs (Cardisoma guanhumi Latreille, 1825) in a restricted-access mangrove area, analyzed using PIT tags

Site fidelity and population structure of blue land crabs (Cardisoma guanhumi Latreille, 1825) in a restricted-access mangrove area, analyzed using PIT tags

Determination of the burrow shapes of Cardisoma guanhumi on Vieques, Puerto Rico

Movements and site fidelity of grass shrimp (Palaemonetes pugio and P. vulgaris) in salt marsh intertidal creeks

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