Sampling technique affects the population structure assessments of fiddler crab Minuca vocator (Herbst, 1804) (Ocypodidae: Gelasiminae)

We examined how the sampling technique can affect the evaluation of Minuca vocator (Herbst, 1804) population structure. We used two sampling procedures: catch-per-unit-effort (CPUE) and quadrat technique (QT). Body size, size?frequency distribution, population density, juvenile recruitment rates, pr...

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Autores principales: Delevati Colpo, Karine, Negreiros Fransozo, María Lucía
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Zoología
Body size
Catch-per-unit-effort
Quadrat
Recruitment
Sex-ratio
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/96548
https://ri.conicet.gov.ar/11336/23437
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-96548
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
Body size
Catch-per-unit-effort
Quadrat
Recruitment
Sex-ratio
spellingShingle Zoología
Body size
Catch-per-unit-effort
Quadrat
Recruitment
Sex-ratio
Delevati Colpo, Karine
Negreiros Fransozo, María Lucía
Sampling technique affects the population structure assessments of fiddler crab Minuca vocator (Herbst, 1804) (Ocypodidae: Gelasiminae)
topic_facet Zoología
Body size
Catch-per-unit-effort
Quadrat
Recruitment
Sex-ratio
description We examined how the sampling technique can affect the evaluation of Minuca vocator (Herbst, 1804) population structure. We used two sampling procedures: catch-per-unit-effort (CPUE) and quadrat technique (QT). Body size, size?frequency distribution, population density, juvenile recruitment rates, proportion of ovigerous females and sex ratio were compared between the sampling procedures. QT allowed us to estimate and compare crab and burrow densities. CPUE sampled both adult crabs and the largest crabs more frequently, whereas QT recorded a greater proportion of smaller crabs. CPUE underestimated the size of M. vocator populations, while density estimates obtained with QT were accurate. The proportion of juveniles was higher with QT than with CPUE, suggesting that recruitment rates estimated by QT were more suitable. The sampling effort provided by CPUE was more efficient for obtaining ovigerous-dependent information than QT. Both sampling techniques showed a predominance of males in all three M. vocator populations. The population density estimation based on burrows overestimated the natural density of M. vocator in all mangroves. Our results suggest that neither CPUE nor QT individually were accurate sampling techniques, but together provided reliable assessments of fiddler crab populations.
format Articulo
Articulo
author Delevati Colpo, Karine
Negreiros Fransozo, María Lucía
author_facet Delevati Colpo, Karine
Negreiros Fransozo, María Lucía
author_sort Delevati Colpo, Karine
title Sampling technique affects the population structure assessments of fiddler crab Minuca vocator (Herbst, 1804) (Ocypodidae: Gelasiminae)
title_short Sampling technique affects the population structure assessments of fiddler crab Minuca vocator (Herbst, 1804) (Ocypodidae: Gelasiminae)
title_full Sampling technique affects the population structure assessments of fiddler crab Minuca vocator (Herbst, 1804) (Ocypodidae: Gelasiminae)
title_fullStr Sampling technique affects the population structure assessments of fiddler crab Minuca vocator (Herbst, 1804) (Ocypodidae: Gelasiminae)
title_full_unstemmed Sampling technique affects the population structure assessments of fiddler crab Minuca vocator (Herbst, 1804) (Ocypodidae: Gelasiminae)
title_sort sampling technique affects the population structure assessments of fiddler crab minuca vocator (herbst, 1804) (ocypodidae: gelasiminae)
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/96548
https://ri.conicet.gov.ar/11336/23437
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AT negreirosfransozomarialucia samplingtechniqueaffectsthepopulationstructureassessmentsoffiddlercrabminucavocatorherbst1804ocypodidaegelasiminae
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