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

Russell A. Forsee, Marc Albrecht

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Overharvesting of the land crab Cardisoma guanhumi (Latreille, 1828) has occurred in some locations including Puerto Rico. We placed passive integrated transponder (PIT) tags in this crab, C. guanhumi, to estimate a population on the southern coast of Vieques island, Puerto Rico. We were able to recapture marked animals approximately 1 year after tagging. We estimated the population of C. guanhumi on the southern central coast Vieques to be approximately 29 000 individuals. The recapture locations of individuals averaged 136 m (SE ± 55.1) from their point of initial capture. This is remarkable because these crabs are reported to move annually inland up to several kilometers for mating. Either some C. guanhumi do not move during mating season, or they return to the same location they left. The carapace size of captured C. guanhumi suggests hunting was not greatly pressuring populations at the time of this study. These findings may help natural resource managers implement a conservation plan that will allow sustainable harvest of this population.

Original languageEnglish (US)
Pages (from-to)435-442
Number of pages8
JournalJournal of Crustacean Biology
Volume32
Issue number3
DOIs
StatePublished - Jun 1 2012

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population estimation
site fidelity
Puerto Rico
philopatry
Decapoda
crab
crabs
coast
tagging
coasts
hunting
transponders
natural resource
natural resources
breeding season
managers
animal
land
animals

Keywords

  • Cardisoma
  • Passive Integrated Transponder
  • Puerto Rico
  • Vieques
  • land crab
  • mark recapture

ASJC Scopus subject areas

  • Aquatic Science

Cite this

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title = "Population estimation and site fidelity of the land crab cardisoma guanhumi (Decapoda: Brachyura: Gecarcinidae) on vieques Island, Puerto Rico",
abstract = "Overharvesting of the land crab Cardisoma guanhumi (Latreille, 1828) has occurred in some locations including Puerto Rico. We placed passive integrated transponder (PIT) tags in this crab, C. guanhumi, to estimate a population on the southern coast of Vieques island, Puerto Rico. We were able to recapture marked animals approximately 1 year after tagging. We estimated the population of C. guanhumi on the southern central coast Vieques to be approximately 29 000 individuals. The recapture locations of individuals averaged 136 m (SE ± 55.1) from their point of initial capture. This is remarkable because these crabs are reported to move annually inland up to several kilometers for mating. Either some C. guanhumi do not move during mating season, or they return to the same location they left. The carapace size of captured C. guanhumi suggests hunting was not greatly pressuring populations at the time of this study. These findings may help natural resource managers implement a conservation plan that will allow sustainable harvest of this population.",
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author = "Forsee, {Russell A.} and Marc Albrecht",
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AU - Forsee, Russell A.

AU - Albrecht, Marc

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Y1 - 2012/6/1

N2 - Overharvesting of the land crab Cardisoma guanhumi (Latreille, 1828) has occurred in some locations including Puerto Rico. We placed passive integrated transponder (PIT) tags in this crab, C. guanhumi, to estimate a population on the southern coast of Vieques island, Puerto Rico. We were able to recapture marked animals approximately 1 year after tagging. We estimated the population of C. guanhumi on the southern central coast Vieques to be approximately 29 000 individuals. The recapture locations of individuals averaged 136 m (SE ± 55.1) from their point of initial capture. This is remarkable because these crabs are reported to move annually inland up to several kilometers for mating. Either some C. guanhumi do not move during mating season, or they return to the same location they left. The carapace size of captured C. guanhumi suggests hunting was not greatly pressuring populations at the time of this study. These findings may help natural resource managers implement a conservation plan that will allow sustainable harvest of this population.

AB - Overharvesting of the land crab Cardisoma guanhumi (Latreille, 1828) has occurred in some locations including Puerto Rico. We placed passive integrated transponder (PIT) tags in this crab, C. guanhumi, to estimate a population on the southern coast of Vieques island, Puerto Rico. We were able to recapture marked animals approximately 1 year after tagging. We estimated the population of C. guanhumi on the southern central coast Vieques to be approximately 29 000 individuals. The recapture locations of individuals averaged 136 m (SE ± 55.1) from their point of initial capture. This is remarkable because these crabs are reported to move annually inland up to several kilometers for mating. Either some C. guanhumi do not move during mating season, or they return to the same location they left. The carapace size of captured C. guanhumi suggests hunting was not greatly pressuring populations at the time of this study. These findings may help natural resource managers implement a conservation plan that will allow sustainable harvest of this population.

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