Fecundity and Brood Biomass Investment in the Estuarine Crab Chasmagnathus Granulatus Dana, 1851 (Decapoda, Brachyura, Grapsidae)

Stella, Vivian S.; López, Laura S.; Rodríguez, Enrique

doi:10.1163/156854096x00907

Cited by 27 publications

(24 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…While the values observed in this study coincided with those recently reported by Bas et al (2007), they were higher than those found previously by luppi et al (1997) in mar Chiquita. also, the present values were higher than those found by Stella et al (1996) in Samborombón Bay and by Bas et al (2007) in San antonio Bay. on the other hand, fecundity in mar Chiquita did not significantly differ between closely neighbouring habitats.…”

Section: Discussioncontrasting

confidence: 79%

“…in the present study, we found similar rE values in mudflats and salt marshes (7.9 and 8.5%, respectively). Stella et al (1996) reported an rE of 7.1% for a population living in Samborombón Bay, while luppi et al (1997) found an rE of 9.0% in the mar Chiquita lagoon. Bas et al (2007) compared populations in San antonio Bay and the mar Chiquita lagoon and found average rE values of 8.4 and 8.8%, respectively.…”

Section: Discussionmentioning

confidence: 98%

See 1 more Smart Citation

Rasgos reproductivos de un cangrejo estuarino Neohelice (= Chasmagnathus) granulata (Brachyura: Grapsoidea: Varunidae) en dos hábitats contrastantes

Silva¹,

Luppi²,

Spivak³

et al. 2009

Sci. Mar.

View full text Add to dashboard Cite

² Consejo nacional de investigaciones Científicas y Técnicas (CONICET) 3 Biologische anstalt Helgoland, Stiftung alfred-Wegener-institut für Polar-und meeresforschung, meeresstation, 27498 Helgoland, germany.SummarY: reproductive traits of an estuarine crab, Neohelice (= Chasmagnathus) granulata (dana 1851), were compared between individuals living in contrasting habitats (mudflat and saltmarsh) of the same population in the brackish coastal lagoon of mar Chiquita, argentina. in both habitats, most measures of egg biomass decreased during embryogenesis, including total dry weight (dW) and organic matter (measured as ash-free dry weight, aFdW) per egg, the contents of ash, carbon, hydrogen and nitrogen (per egg and as percentage values of dW), the energy content (estimated from C; both per egg and per mg dW), and the C/n and C/H mass ratios. Egg size, wet weight (WW), and water content (in µg and % of WW), by contrast, increased significantly during the time of embryonic development. These parameters reached significantly higher final (near-to-hatching) values in mudflats than in saltmarshes (egg volume 0.0249 vs 0.0233 mm 3 ; WW 36.5 vs 28.8 µg; water content 30.7 vs 23.2 µg per egg or 84.2 vs 80.2% of WW, respectively). Fecundity and reproductive effort did not differ significantly between habitats. Habitat-specific differences in the water content and size of crab eggs are discussed in relation to small-scale local variation in environmental conditions.Keywords: Neohelice, Chasmagnathus, estuary, fecundity, reproductive effort, egg volume, elemental composition (CHn).rESumEn: Rasgos reproductivos de un cangrejo estuarino Neohelice (= chasmagNathus) graNulata (Brachyura: Grapsoidea: Varunidae) en dos hábitats contrastantes. -los rasgos reproductivos del cangrejo estuarino, Neohelice (= Chasmagnathus) granulata, fueron comparados entre individuos que viven en hábitats contrastantes (planicie de marea y marisma) en una misma población de la laguna costera salobre de mar Chiquita, argentina. En ambos hábitats, la mayoría de las mediciones de biomasa de los huevos disminuyeron durante la embriogénesis, incluyendo el peso seco total (dW) y la materia orgánica (medida como peso seco libre de ceniza, aFdW) por huevo, el contenido de ceniza, carbón, hidrógeno y nitrógeno (por huevo y como valores porcentuales de dW), el contenido de energía (estimado a partir del C; por huevo y por mg dW), y la proporción de C/n y C/H. El tamaño del huevo, peso húmedo (WW), y contenido de agua (en % de WW), por el contrario, aumentaron significativamente durante el tiempo de desarrollo embrionario. Estos parámetros alcanzaron valores finales (cerca de la eclosión) significativamente más altos en la planicie de marea que en la marisma (volumen de los huevos 0.0249 vs 0.0233 mm 3 ; WW 36.5 vs 28.8 µg; contenido de agua 30.7 vs 23.2 µg por huevo y 84.2 80.2% WW; respectivamente). la fecundidad y el esfuerzo reproductivo no difieren significativamente entre ambos hábitats. las diferencias vinculadas al hábitat en el contenido de agua y ta...

show abstract

Section: Discussioncontrasting

confidence: 79%

Section: Discussionmentioning

confidence: 98%

Rasgos reproductivos de un cangrejo estuarino Neohelice (= Chasmagnathus) granulata (Brachyura: Grapsoidea: Varunidae) en dos hábitats contrastantes

Silva¹,

Luppi²,

Spivak³

et al. 2009

Sci. Mar.

View full text Add to dashboard Cite

show abstract

“…To date, all reports available on N. granulata reproduction involve populations from subtropical salt marshes (STELLA et al 1996, LÓPEZ et al 1997, LÓPEZ-GRECO & RODRÍGUEZ 1999. Thus, the aim of this paper was to provide new data on the population and reproductive biology of N. granulata from a tropical mangrove ecosystem in the Brazilian coast.…”

mentioning

confidence: 99%

Population biology of the burrowing crab Neohelice granulata, (Crustacea: Decapoda: Varunidae) from a tropical mangrove in Brazil

Gregati¹,

Negreiros-Fransozo²

2009

Zoologia (Curitiba, Impr.)

View full text Add to dashboard Cite

ABSTRACT. The population biology of the burrowing crab Neohelice granulata (Dana, 1851) from a mangrove in Jabaquara Beach, Paraty, state of Rio de Janeiro, Brazil (23º13'04"S and 44º42'47"W), was studied with respect to the following traits: size-frequency distribution, recruitment, reproductive period, fecundity, and sex ratio. Specimens were sampled monthly from April, 2003 to March, 2004, at the river margins during low tide periods. Size, sex, presence of eggs, and stage of the female gonad were recorded. Ovigerous females had their eggs removed and counted. The reproductive period was continuous and the highest frequency of ovigerous females was recorded in the fall and winter. Mature gonads were found throughout the year and recruitment was continuous but more intense during the summer. The fecundity of N. granulata (30028.3 ± 10861.2 eggs) was high in comparison to studies in other localities. In general, the proportion of males was similar to that of females (1:0.92); however, males were predominant in the fall (1:0.77) and winter (1:0.75). All the information available so far on the reproduction of N. granulata involves populations from subtropical salt marshes; therefore, comparative studies including other habitats, such as mangrove forests, are needed to further understand the environmental influences on the population and reproductive biology of semiterrestrial crabs.

show abstract

“…The marked decrease in dry weight towards older stages could be explained by yolk consumption during embryonic development (Dworschak 1988). The opposite pattern observed between individual length and weight suggests an increase in water concentration required for solvatation, concurrently with yolk catabolism that enhances the quantity of free metabolites (Stella et al 1996;Ló pez et al 1997). In this sense, Klapow (1970) suggested for Excirolana chiltoni that the initial yolk material is sufficient to complete the embryonic development.…”

Section: Discussionmentioning

confidence: 99%

Reproductive biology of the isopod Excirolana braziliensis at the southern edge of its geographical range

Martínez

Defeo

2006

Helgol Mar Res

View full text Add to dashboard Cite

A full analysis of the reproductive biology of the isopod Excirolana braziliensis Richardson 1912 was conducted in a sandy beach of Uruguay, located at the southernmost edge of its distributional range in the Atlantic Ocean. Reproductive and recruitment periods of E. braziliensis were concentrated in austral summer. Females with oostegites appeared in November, whereas total biomass, individual sizes and fecundity of ovigerous females peaked between December and January. These concurrent traits were responsible for the significant peak of juveniles in January. The size at maturity was 9.88 mm. Four embryonic developmental stages were described and identified: mean length linearly increased from stages I to III, whereas dry weight exponentially decreased from stages I to IV. The high reproductive output (0.41-0.58), reported for the first time in this isopod, exceeds the rates documented for other isopods. Reproduction of E. braziliensis at the southern edge of its range is semelparous: females produce one brood during the reproductive season, exhaust their energy reserves during incubation, and probably die at the end of the reproductive season. A macroscale comparison suggests that E. braziliensis at the southern edge of its range counteracts its narrow reproductive period by a short incubation period with larger individual mature female and embryo sizes, higher fecundity and a higher percentage of ovigerous females than in subtropical and tropical populations. These extreme reproductive indicators could be attributed to the internal retention of embryos that assures offspring survival, coupled with a high adaptation capability to environmental variations across its range.

show abstract

Fecundity and Brood Biomass Investment in the Estuarine Crab Chasmagnathus Granulatus Dana, 1851 (Decapoda, Brachyura, Grapsidae)

Cited by 27 publications

References 3 publications

Rasgos reproductivos de un cangrejo estuarino <i>Neohelice (</i>= <i>Chasmagnathus) granulata</i> (Brachyura: Grapsoidea: Varunidae) en dos hábitats contrastantes

Rasgos reproductivos de un cangrejo estuarino <i>Neohelice (</i>= <i>Chasmagnathus) granulata</i> (Brachyura: Grapsoidea: Varunidae) en dos hábitats contrastantes

Population biology of the burrowing crab Neohelice granulata, (Crustacea: Decapoda: Varunidae) from a tropical mangrove in Brazil

Reproductive biology of the isopod Excirolana braziliensis at the southern edge of its geographical range

Contact Info

Product

Resources

About