The conquest of freshwater and land by marine crabs: adaptations in life-history patterns and larval bioenergetics

Anger, Klaus

doi:10.1016/0022-0981(95)00114-x

Cited by 145 publications

(127 citation statements)

References 68 publications

Supporting

Mentioning

113

Contrasting

Unclassified

Order By: Relevance

“…Hartnoll 1964;Reimer et al 1998;Diesel et al 2000;Anger 2005;Anger and Schubart 2005). This is several times larger than the egg size commonly known from estuarine and coastal marine species of grapsoid crabs, and it is typically associated with an abbreviated and at least partially food-independent mode of larval development (Rabalais and Gore 1985;Anger 1995Anger , 2001). This reproductive trait is generally considered as an adaptation to conditions with low or unpredictable production of planktonic food.…”

Section: Egg Size Duration Of Embryonic Development Hatching Patternmentioning

confidence: 99%

Adaptive traits in ecology, reproduction and early life history of Sesarma meridies, an endemic stream crab from Jamaica

Anger

Torres

Nettelmann

2007

Mar. Freshwater Res.

View full text Add to dashboard Cite

The endemic Jamaican freshwater crab Sesarma meridies lives in shady microhabitats on river banks, where temperature and pH are lower and ion concentrations higher than in mid-stream water. Ovigerous females were found to release up to 140 yolk-rich larvae (hatching period: 1 week; >90% at night). Larval development comprised two fully lecithotrophic zoeal stages and a feeding megalopa, which was also able to develop without food (facultative lecithotrophy). After metamorphosis in complete absence of food, juvenile crabs showed reduced body size, delayed moulting, and enhanced mortality. Endotrophic development was fuelled by internal lipid reserves; proteins were conserved as structural components of tissues and organs. Fed megalopae enhanced their protein content rather than re-stocking previously lost lipid reserves. Ecdysial biomass (CHN) losses were very low (zoeal stages: 1–2%; megalopa: 3–7%), showing an energy-saving production of thin exuviae. An extended hatching period may reduce intraspecific competition or cannibalism among juveniles; nocturnal hatching should reduce the predation on larvae. Large egg size, enhanced yolk reserves, an extended embryonic development (7 weeks at 24°C; implying a prolonged period of brood care), abbreviated and partially food-independent larval development, and reduced exuvial losses are considered as life-history adaptations to unpredictable planktonic food availability in the breeding habitat.

show abstract

Section: Egg Size Duration Of Embryonic Development Hatching Patternmentioning

confidence: 99%

Adaptive traits in ecology, reproduction and early life history of Sesarma meridies, an endemic stream crab from Jamaica

Anger

Torres

Nettelmann

2007

Mar. Freshwater Res.

View full text Add to dashboard Cite

show abstract

“…The crab family Varunidae includes marine, brackish and freshwater species (Anger 1995). The genus Cyrtograpsus comprises three species that inhabit the temperate waters of the southwestern Atlantic: C. angulatus Dana, 1851, C. altimanus Rathbun, 1914 andC.…”

Section: Introductionmentioning

confidence: 99%

Larval development of <i>Cyrtograpsus affinis</i> (Dana) (Decapoda, Brachyura, Varunidae) from Río de la Plata estuary, reared in the laboratory

Spivak¹,

Cuesta²

2000

Sci. Mar.

View full text Add to dashboard Cite

SUMMARY:The complete larval development of the crab Cyrtograpsus affinis (Brachyura, Varunidae) was obtained by culture in the laboratory. Five zoeal stages, the megalopa and the first crab are described and illustrated. Larval development from hatching to first crab took 29 days at 20°C and 35 PSU. The genus Cyrtograpsus only consists of three species. Larval development of C. altimanus and C. angulatus had been described previously. In the present study, morphological larval characters of the three species are compared. Generic larval features are also compared with those of other Varunidae genera.

show abstract

“…Almost all of them show some degree of adaptation to terrestrial or low-salinity conditions, although most species are still bound to the sea, having a pelagic larval development (I-lartnoll, 1988;Anger, 1995). One of these, the semiterrestrial crab Chasmugnuthus grunulutu Dana 1851, lives in supralittoral and mesolittoral zones of South American salt marshes, ranging from Cabo Frio, Brazil (23 ~ S), to the Gulf of San Matias, Argentina (43 ~ S), where it is one of the dominating macrobenthic inhabitants (Boschi, 1964).…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature on larval survival, development, and respiration inChasmagnathus granulata (Crustacea, Decapoda)

Ismael

Anger

Moreira

1998

Helgoländer Meeresunters.

Self Cite

View full text Add to dashboard Cite

Larvae uf an estudrine grapsid crdb Chasmagnuthus granul(lt(l l)ana 1851, tram temperate and subtropical regions at South America, were reared in seawater [32"/,,,,) at five different cnnstant lemperatures (12, 15, 18, 21, 2.1 ~ Conlplele larval dewflopment fronl hdtching IZoea [) to metamorphosis (Crab l) occurred in a range Irom I5 to 24 :C 1 tighest surviwll (60".;, to the first juvenile stagel was observed at 18 ~C, while all ldrvae reared at 12 ~C died before metamorphosis. The duration at development (D) decreased with increasing temperature (T). This relationship is described for r larval sta.qes as o poweK function (linear regressions alter logarithmic tr~msh)rntationof both Dand T) The temperature-dependenceoItheinstantdneousdevelopnlentalrate(D') is compared among larval stages and temperatures using the Q,,, coefficient (van't Hall's equation). Throu~h aii four zoeal stages, this Index tends to mcredse dunng development and to decrease with increasing T (comparing langes 12-18, 15-21, 18-24 ~C). In lhe Megalnpa, low" Q::, values were found in the range from 15 to 24 ~C. In another series of experiments, larvae were reared at constant lB ~C, and their dry weight (W) and respiratory response Io changes in T were measured in all successive stages during the intermoult period (stage C) of the moulting cycle. Both individual and weight-specific respiration (R, OOJ increased exponentially with increasing 7~ At each temperature, R incredsed significantly during growth and development through successive larval stages. No significantly dilferent QO, values were found in the first three zoeal stdges, while a significant decrease with increasing W occurred in the Zoea IV and Megalopa. As m the temperature-dependence of D, the respiratory response to changes in temperature (Q,.,,) depends on both the temperalure range and the developmental stage, however, with different patterns. In the zoeal stages, the respiratory Q~,, was minimum (l.7-2.2) at low temperatures (12-18 ~ but maximum (2.2-3.0} at 18-24 ~ The Megaiopa, in contrast, showed a stronger metabolic response in the lower than in the upper temperature range (Q~o = 2.8 and 1.7. respechvely). We interpret this pattern as an adaptation to a sequence of temperature conditions that should typically be encountered by C. granulata larvae during their ontogenetic migrations: hatching in and subsequent export from shallow estuarine lagoons, zoeal development in coastal marine waters, which are on average cooler, return in the Megalopa stage to warm lagoons. We thus propose that high metabolic: sensitivity to changes in temperature may serve as a signal slimulating larval migration, so that the zoeae should tend to leave warm estuaries and lagoons, whereas the Megalopa should avoid remaining in the cooler marine waters and initiate its migration towards shallow coastal lagoons.

show abstract

The conquest of freshwater and land by marine crabs: adaptations in life-history patterns and larval bioenergetics

Cited by 145 publications

References 68 publications

Adaptive traits in ecology, reproduction and early life history of Sesarma meridies, an endemic stream crab from Jamaica

Adaptive traits in ecology, reproduction and early life history of Sesarma meridies, an endemic stream crab from Jamaica

Larval development of <i>Cyrtograpsus affinis</i> (Dana) (Decapoda, Brachyura, Varunidae) from Río de la Plata estuary, reared in the laboratory

Influence of temperature on larval survival, development, and respiration inChasmagnathus granulata (Crustacea, Decapoda)

Contact Info

Product

Resources

About