Population and reproductive features of the western Atlantic hermit crab Pagurus criniticornis (Anomura, Paguridae) from Anchieta Island, southeastern Brazil

Mantelatto, Fernando L.; Faria, Fabíola C. R.; Iossi, Carmen L.; Biagi, Renata

doi:10.1590/s0073-47212007000300016

Cited by 18 publications

(13 citation statements)

References 32 publications

(44 reference statements)

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“…These patterns of large males may occur due to different energy requirements for growth between sexes, with males reaching larger sizes than females (Abrams, ). This difference in mean size was also reported for specimens of P. criniticornis in Anchieta Island, São Paulo, Southeastern Brazil, which showed a similar upper size class limit (3.0 mm CSL; Mantelatto, Faria, Iossi, & Biagi, ) to that reported here. For both species, every CSL size class showed similar relative frequencies between males and females.…”

Section: Discussionsupporting

confidence: 88%

Shell use by sympatric hermit crab species in a seasonally open coastal lagoon in Northeastern Brazil

et al. 2017

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There are gaps in what is known about the patterns of gastropod shell use by hermit crabs in Brazilian lagoon areas, especially in Northeastern Brazil. However, this is important because the understanding of selection patterns provides information on life history and eco‐evolutionary conceptions of paguroids. The present study investigated the use of gastropod shells occupied by Pagurus criniticornis and Clibanarius sclopetarius in a coastal lagoon seasonally connected to an estuary and to the sea, correlating eco‐evolutionary aspects and hydrodynamic characters. The study was carried out between February 2013 and January 2014. Hermit crabs and their shells were identified and measured (hermit crabs’ cephalothorax shield length and width, major propodus length and height, weight, shell total length and width, shell aperture length and width). Partial least squares regression was used to analyse the morphometric data. Additionally, a multinomial proportions test was performed to infer patterns (inter‐/intra‐specific) of shells’ occupation. Hermit crab species occupied a total of 13 types of shells, predominantly those of Neritina virginea (67.83%). The shell weight was the most important determinant of shell occupancy in the morphometric model (variable importance in projection >1). The proportions of N. virginea shells used were similar in both species of hermit crabs, except between the sexes of P. criniticornis. Presumably, the high utilization rate of N. virginea shells is related to its abundance and dispersal, and to the shells’ suitability for hermit crabs, which is reflected by the morphometric model, as well as by the hydrodynamics of the lagoon‐estuarine environment. The relative occupation of different types of shells for each species of hermit crabs studied appears to be associated with regulation by inter‐/intra‐specific competition, which fosters the co‐occurrence of those populations. These results endorse coastal lagoons as a refuge and recruitment area for aquatic fauna. In addition, it highlights a challenge in the management and conservation of paguroid species whose population dynamics depend on the resources coming from the Gastropoda community.

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Section: Discussionsupporting

confidence: 88%

Shell use by sympatric hermit crab species in a seasonally open coastal lagoon in Northeastern Brazil

et al. 2017

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“…As in other anomurans Mantelatto et al, 2007), males of C. clypeatus inhabiting Pérez Island exhibited a larger body size than females (table I). Usually, body size is viewed as an indicator of ecological dominance.…”

Section: Discussionsupporting

confidence: 71%

“…The lack of ovigerous females in our collection supports this idea. In coastal areas of Brazil, several studies have also shown that male hermit crabs are numerically dominant (Bertini & Fransozo, 1999;Mantelatto et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Relative Growth of the Land Hermit Crab, Coenobita Clypeatus (Anomura, Coenobitidae) from a Coral Reef Island, Southern Gulf of Mexico

Sanvicente‐Añorve

Hermoso-Salazar

2011

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Information on growth in hermit crabs is very scarce, possibly due to the inherent difficulties of extracting them from their shells. In this work we document the relative growth, sexual size dimorphism, and level of chelae asymmetry of the land hermit crab Coenobita clypeatus (Fabricius, 1787) collected on a coral reef island in the National Park Arrecife Alacranes, southern Gulf of Mexico, during December 2009 and September 2010. Specimens examined were anaesthetized in a clove oil-water solution to avoid unnecessary crab mortality. A total of 387 individuals was measured on six external variables: cephalothorax length and width, and both chelae in length and width. Taking the cephalothorax length as the reference dimension, the remaining measurements were fitted to a power function to examine the degree of allometry in growth and make comparisons between sexes. For each sex, an asymmetry index (AI) was calculated to determine the degree of heterochely, and the significance of its value was evaluated by means of null models. Numerically, males dominated the crab population in the largest size classes (>12.6 mm CL) in both seasons. As in most anomurans, C. clypeatus males attained larger body sizes than females, but their relative growth was most similar. For both sexes, the growth of chela width was positively allometric (t-test, p < 0.05). Also, AI values showed a heterocheleous condition, with the left chela significantly higher (p < 0.001) than the right. Regarding our own results and previous reports, we propose that heterochely could be triggered during the glaucothoal and juvenile stages. Numerical dominance of males in the larger size classes is probably due to the segregation of ovigerous females from the main crab group, searching suitable areas for egg deposition, but also to a better condition of males to carry heavier shells than females, which in their turn have to invest a considerable amount of energy in reproduction. RESUMENLa información sobre el crecimiento de los cangrejos ermitaños es muy escasa, posiblemente debido a las inherentes dificultades para extraerlos de sus conchas. En este trabajo se documenta el 1 ) crecimiento relativo, dimorfismo sexual y el nivel de asimetría de las quelas del cangrejo ermitaño Coenobita clypeatus (Fabricius, 1787) recolectados en una isla coralina del Parque Nacional Arrecife Alacranes, sur del Golfo de México, durante diciembre de 2009 y septiembre de 2010. Los especímenes examinados fueron anestesiados con una solución de aceite de clavo para evitar la mortalidad innecesaria de cangrejos. Un total de 387 individuos se midieron en seis variables externas: largo y ancho del cefalotórax y largo y ancho de ambas quelas. Tomando la longitud del cefalotórax como la dimensión de referencia, el resto de las medidas se ajustó a una función de tipo potencial para examinar el grado de alometría en el crecimiento y hacer comparaciones entre los sexos. Para cada sexo, se calculó un índice de asimetría (AI) a fin de determinar el grado de heterogeneidad entre las quelas...

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“…Such variability as observed in Synalpheus apioceros could be due to multiple spawnings during a single reproductive season (Miranda et al 2006, Mantelatto et al 2007). Also, the presence of primiparous females, which tend to produce fewer embryos than multiparous ones (Somerton and Meyers 1983, Mantelatto et al 2007) could explain the variability of embryo number within the same size class.…”

Section: Discussionmentioning

confidence: 96%

Embryo production in the sponge-dwelling snapping shrimp Synalpheus apioceros (Decapoda, Alpheidae) from Bocas del Toro, Panama

Rebolledo¹,

Wehrtmann²,

Felder³

et al. 2014

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Caridean shrimps of the genus Synalpheus are abundant and widely distributed in tropical and subtropical regions, but knowledge of their reproductive biology remains scarce. We report reproductive traits of Synalpheus apioceros from Bocas del Toro, Panama, based on collections in August 2011. The 46 ovigerous females that were analyzed ranged in size from 3.8 to 7.4 mm in carapace length. Fecundity varied between 8 and 310 embryos and increased with female size. Females invested 18.6 ± 10.3% of their body weight in Embryo production. Embryo volume increased considerably (77.2%) during embryogenesis, likely representing water uptake near the end of incubation period. Compared to Synalpheus species with abbreviated or direct development, Synalpheus apioceros produced substantially smaller embryos; however, Synalpheus apioceros seems to have a prolonged larval phase with at least five zoeal stages, which may explain the combination of relatively small and numerous embryos. We did not find nonviable, minute, chalky embryos, previously reported for Synalpheus apioceros specimens obtained from the northwestern Gulf of Mexico, which supports the hypothesis that the production of this type of embryos may be a physiological response of this warm-water species to the temperature decrease near to its latitudinal range limit.

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Population and reproductive features of the western Atlantic hermit crab Pagurus criniticornis (Anomura, Paguridae) from Anchieta Island, southeastern Brazil

Cited by 18 publications

References 32 publications

Shell use by sympatric hermit crab species in a seasonally open coastal lagoon in Northeastern Brazil

Shell use by sympatric hermit crab species in a seasonally open coastal lagoon in Northeastern Brazil

Relative Growth of the Land Hermit Crab, Coenobita Clypeatus (Anomura, Coenobitidae) from a Coral Reef Island, Southern Gulf of Mexico

Embryo production in the sponge-dwelling snapping shrimp Synalpheus apioceros (Decapoda, Alpheidae) from Bocas del Toro, Panama

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