Geographic variation in life history of the sand crab, Emerita analoga (Stimpson) on the California coast: Relationships to environmental variables

Dugan, Jenifer E.; Hubbard, David M.; Wenner, Adrian M.

doi:10.1016/0022-0981(94)90132-5

Cited by 58 publications

(60 citation statements)

References 29 publications

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“…Geographic variations in crustacean life history traits are well documented (Hines, 1989) and differences in reproduction and life history between latitudinally separated populations have been reported for several marine caridea, anomura and brachyura (Jones and Simons, 1983;Dugan et al, 1994Dugan et al, , 1999Lardies and Castilla, 2001;Lardies and Wehrtmann, 2001;Brante et al, 2004). For example, latitudinal gradients in temperature and photoperiod were correlated with changes in maximum size and size-atmaturity: larger sizes were observed at higher latitudes (Kinne, 1970;Jones and Simons, 1983;Lonsdale and Levinton, 1985).…”

Section: Discussionmentioning

confidence: 99%

Interpopulational differences in the female reproductive cycle of the southwestern Atlantic estuarine crab <i>Chasmagnathus granulatus Dana</i>, 1851 (Brachyura: Grapsoidea: Varunidae)

Ituarte¹,

Bas²,

Luppi³

et al. 2006

Sci. Mar.

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SUMMARY:The female reproductive biology of Chasmagnathus granulatus Dana, a semiterrestrial burrowing crab endemic to the southwestern Atlantic, was compared in two contrasting coastal habitats: San Antonio (SA, marine) and Mar Chiquita (MC, estuarial). Mature females were collected monthly for 1.5 years and the ovarian cycle was described using a qualitative scale. Gonadosomatic (GSI) and hepatosomatic (HSI) indexes were calculated. The highest GSI and HSI occurred early in the reproductive season in SA and during the non-reproductive season in MC. The beginning and duration of the reproductive season also differed between populations: it started later and was shorter in SA. In MC, secondary vitellogenesis continued when the reproductive season had finished, and the ovaries remained fully developed throughout the nonreproductive season (winter). Therefore, females of MC were ready to lay eggs as soon as spring environmental conditions appeared. However, SA females did not attain a fully developed ovary during winter. A limited food supply would restrict the available energy to complete secondary vitellogenesis at the end of the reproductive season in SA, after the last spawning. Thus, the vitellogenic cycle should be completed in the following spring, causing a delay in the beginning of the reproductive period. In addition, the higher temperature amplitude may cause the reproductive period in SA to end early.Keywords: estuary, crab, Argentina, ovarian cycle, gonadosomatic index, hepatosomatic index. RESUMEN: DIFERENCIAS INTERPOBLACIONALES EN EL CICLO REPRODUCTIVO FEMENINO DEL CANGREJO ESTUÁRICOCHASMAGNATHUS GRANULATUS DANA, 1851 (BRACHYURA: GRAPSOIDEA: VARUNIDAE) DEL ATLÁNTICO SUDOCCIDENTAL. -La biología reproductiva de las hembras de Chasmagnathus granulatus Dana, un cangrejo semiterrestre y excavador endémico del Atlántico Sudoccidental, fue comparada entre dos localidades costeras con regímenes ambientales contrastantes: San Antonio (SA, marino) y Mar Chiquita (MC, estuarial). Hembras maduras fueron recolectadas mensualmente por 1.5 años y el ciclo ovárico fue descrito usando una escala cualitativa. Los índices gonadosomático (GSI) y hepatosomático (HSI) fueron calculados. Los mayores valores de GSI y HSI tuvieron lugar al inicio de la estación reproductiva en SA, y durante la estación no reproductiva en MC. El inicio y duración de la estación reproductiva también difirieron entre las poblaciones: ésta comenzó más tarde y fue más corta en SA. En MC, la vitelogénesis secundaria continuó cuando la estación reproductiva había finalizado, y el ovario permaneció desarrollado durante la estación no reproductiva (invierno). En consecuencia, las hembras de MC estaban listas para poner sus huevos tan pronto como aparecieron las condiciones ambientales de primavera. Por el contrario, las hembras de SA no alcanzaron un completo desarrollo del ovario durante el invierno. Un suministro limitado de alimento restringiría la energía disponible para completar la vitelogénesis secundaria al final de la estación reproductiva e...

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Section: Discussionmentioning

confidence: 99%

Interpopulational differences in the female reproductive cycle of the southwestern Atlantic estuarine crab <i>Chasmagnathus granulatus Dana</i>, 1851 (Brachyura: Grapsoidea: Varunidae)

Ituarte¹,

Bas²,

Luppi³

et al. 2006

Sci. Mar.

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“…Some predation by sea otters has also been documented (Hennessey andMorejohn 1977, Mayer 2003). E. analoga is the dominant macrofauna species of exposed beaches on the California coast, and its geographic variation, growth and reproductive biology have been studied extensively at several California and Chilean beaches (Eickstaedt 1969, Dugan et al 1994, Jaramillo 2000.…”

Section: Emerita Analoga Life Historymentioning

confidence: 99%

“…In general, female size at maturity and largest and smallest crab size increase significantly from southern to northern beaches, specifically from La Jolla in San Diego County to Clam Beach in Humboldt County. It has been suggested that this is a result of slower ovarian development due to colder waters but a faster overall growth rate due to greater food availability (Wenner et al 1987, Dugan et al 1994. Observations of E. analoga populations from California central coast beaches including Morro Bay, Cayucos, Montaña de Oro, Avila Beach, and Pismo Beach indicate that these populations are also sexually dimorphic, have large ovigerous females and share egg production patterns similar to previously studied populations from other California beaches (Vredevoe and Kolluru, unpublished data).…”

Section: E Analoga Growth and Morphologymentioning

confidence: 99%

Effects of Season, Size and Parasitism by the Acanthocephalan, Profilicollis altmani, on the Carotenoid Concentration and Composition of the Pacific Mole Crab, Emerita analoga

Constancio¹

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“…En Chile se encuentra en los niveles medios e inferior del intermareal arenoso (Palma et al, 1982;Castilla, 1983;Jaramillo & González, 1991;Jaramillo & McLachlan, 1993;Jaramillo et al, 1998) especialmente en playas expuestas. Esta especie se podría considerar como potencial receptor de varios polutantes, debido a su gran abundancia en la zona intermareal y por ser fuente importante de alimento para aves y peces costeros (Dugan et al, 1994(Dugan et al, , 1995. Aunque ha sido reconocida como una especie bioindicadora para una serie de contaminantes en distintas áreas marinas (Burnett, 1971;Rossi et al, 1978;Siegel & Wenner, 1984;Wenner, 1988;Ferdin et al, 2002), en Chile existen escasos trabajos sobre su importancia como especie bioindicadora (Hernández et al, 2000;Valdovinos & Zuñiga, 2002).…”

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Contenido de metales en sedimentos y en Emerita analoga (Stimpson, 1857), en bahia Mejillones del Sur, Chile

Guíñez

Valdés

Castillo

2015

lajar

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Contenido de metales en sedimentos y en (Stimpson, 1857) in eight sectors of south Mejillones Bay, Chile was determined. Only Zn showed a certain degree of contamination in the sediments of the bay with a rate of geoaccumulation of 2.8. In analyzing the content of metals in E. analoga, we determined that this species would bioaccumulate some of the metals analyzed but low magnitude, with the exception of Zn bioaccumulation factor of 2.07. The similarity dendrogram performed with bioaccumulation index data related the values of this index with the spatial distribution of major industries and urban areas. This concordance allows establishing that E. analoga be responding as an indicator of environmental health for this system. It is also important to note that this bay is experiencing the first signs of a moderately impacted industrial area. Therefore it is necessary to generate consistent measurements, covering more than an environmental matrix, in order to control the human impact in this highly productive coastal marine ecosystem.

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Geographic variation in life history of the sand crab, Emerita analoga (Stimpson) on the California coast: Relationships to environmental variables

Cited by 58 publications

References 29 publications

Interpopulational differences in the female reproductive cycle of the southwestern Atlantic estuarine crab <i>Chasmagnathus granulatus Dana</i>, 1851 (Brachyura: Grapsoidea: Varunidae)

Interpopulational differences in the female reproductive cycle of the southwestern Atlantic estuarine crab <i>Chasmagnathus granulatus Dana</i>, 1851 (Brachyura: Grapsoidea: Varunidae)

Effects of Season, Size and Parasitism by the Acanthocephalan, Profilicollis altmani, on the Carotenoid Concentration and Composition of the Pacific Mole Crab, Emerita analoga

Contenido de metales en sedimentos y en Emerita analoga (Stimpson, 1857), en bahia Mejillones del Sur, Chile

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