Growth and elemental composition (C, N, H) in Inachus dorsettensis (Decapoda: Majidae) larvae reared in the laboratory

Anger, Klaus

doi:10.1007/bf00391988

Cited by 24 publications

(14 citation statements)

References 27 publications

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“…This is caused by epidermal groWth associated with morphogenesis during the premoult stages of the moult cycle (Anger, 1983). The same patterns were found also in detailed studies by Dawirs (1983) and on Carcinus maenas, and in further investigations on decapod larvae: Hyas coarctatus , Nephrops norvegicus (Anger & Pfischel, 1986), Inachus dorsettensis (Anger. 1988).…”

Section: Discussionsupporting

confidence: 67%

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Physiological and biochemical changes during the larval development of a brachyuran crab reared under constant conditions in the laboratory

Anger

Harms

Püschel

et al. 1989

Helgolander Meeresunters

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Larvae of the spider crab Hyas araneus were reared in the laboratory at constant conditions (12 ~ 32 %oS), and their feeding rate (F), oxygen consumption (R), nitrogen excretion (U), and growth were measured in regular intervals of time during development from hatching to metamorphosis. Growth was measured as dry weight (W), carbon (C), nitrogen (AT), hydrogen (H) protein, and lipid. All these physiological and biochemical traits revealed significant changes both from instar to instar and during individual larval moult cycles. Average F was low in the zoea I, reached a maximum in the zoea II, and decreased again in the megalopa. In the zoeai instars, it showed a bell-shaped pattern, with a maximum in the middle (zoea I) or during the first half of the moult cycle (zoea II). Maximum F in the megalopa was observed still earlier, during postmoult.Respiration (R) increased in the zoeai instars as a linear function of time, whereas it showed a sinusoidal pattern in the megalopa. These findings on variation in F and R during larval development confirm results obtained in previous studies on H. araneus and other decapod species. Excretion (U) was measured for the first time with a high temporal resolution in crab larvae. It showed in all three larval instars a bell-shaped variation pattern, with a maximum near the middle of the moult cycle, and significantly increasing average values from" instar to instar. The atomic O/IV ratio followed an inverse pattern, suggesting a maximum utilization of protein as a metabolic substrate during intermoult Growth data from the present study and from a number of previous studies were compiled, showing consistency of growth patterns, but a considerable degree of variability between larvae from different hatches reared under identical conditions. The data show the following consistent tendencies: during the first part of each larval moult cycle (in postmoult, partly in intermoult), lipids are accumulated at a higher rate than protein, whereas an inverse growth pattern is typical of the later (premoult) stages. These two different growth phases are interpreted as periods dominated by reserve accumulation in the hepatopancreas, and epidermal growth and reconstruction (morphogenesis), respectively. Differences between individual larval instars in average biochemical composition and growth patterns may be related to different strategies: the zoeal instars and the early megalopa are pelagic feeding stages, accumulating energy reserves (principally lipids) necessary for the completion of larval development, whereas the later (premoult) megalopa is a semibenthic settling stage that converts a significant part of this energy to epidermal protein. The megalopa shifts in behaviour and energy partitioning from intense feeding activity and body growth to habitat selection and morphogenesis, preparing itself for metamorphosis, i.e. it shows an increasing degree of ]ecithotrophy. Data from numerous parallel elemental and biochemical analyses are compiled to show quantitative relationships ...

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Section: Discussionsupporting

confidence: 67%

“…1982;, H. coarctatus , Carcinus maenas (Dawirs. 1983;, Nephrops norvegicus (Anger & Piischel, 1986), Inachus dorsettensis (Anger, 1988). The present review of growth data measured in H. araneus larvae shows that there is quite a lot of variabihty between different hatches (Fig.…”

Section: Discussionmentioning

confidence: 65%

Physiological and biochemical changes during the larval development of a brachyuran crab reared under constant conditions in the laboratory

Anger

Harms

Püschel

et al. 1989

Helgolander Meeresunters

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“…Both, lipids and proteins serve as the most important energy reserves in decapod crustaceans (Cockcroft, 1997). The C:N values also shows a typical short term pattern described for several brachyurans, with low values after moulting and an increase on the following days Anger, 1988;Minagawa et al, 1993) and a slight decrease towards moulting. This indicates a higher lipid metabolism shortly after ecdysis, followed by an increasing protein accumulation.…”

Section: Discussionmentioning

confidence: 65%

“…Short term temporal changes in the relative carbon content (% W) show the typical cyclic pattern (Fig. 2) (Anger, 1988;Anger, 2001) within individual moult cycles with decreased carbon values after ecdysis due to rapid water and mineral uptake during the initial phase of a moult cycle. One exception occurs after ecdysis from zoea II to zoea III where the carbon content is higher after moulting.…”

Section: Discussionmentioning

confidence: 95%

Influence of temperature on the zoeal development and elemental composition of the cancrid crab, Cancer setosus Molina, 1782 from Pacific South America

Weiss

Heilmayer

Brey

et al. 2009

Journal of Experimental Marine Biology and Ecology

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a b s t r a c t a r t i c l e i n f oTemperature changes during ENSO cause mass mortalities of adult Cancer setosus, but the effects on early life stages are unknown. The influence of temperature on survival, development and biochemical composition was studied in larvae of the hairy crab, C. setosus, from a population off the northern Chilean coast. In rearing experiments conducted at four different temperatures (12, 16, 20, 22°C), zoeal development was only completed at 16 and 20°C, after 78 and 36 days, respectively. Instar duration was negatively correlated with temperature. A multiple linear model relating larval body mass (in carbon) to temperature and developmental time suggests that successful larval development is possible within a narrow temperature range only. The biochemical composition, measured as carbon, hydrogen, and nitrogen (C, H, N) content, show in general the typical oscillating changes during the moult cycle of brachyuran crab larvae. However, at high (22°C) and low (16°C) temperatures, CHN values show deviations from the typical pattern, indicating threshold temperatures for larval activity and survival. These findings indicate that the larval development of C. setosus is compromised under conditions of El Niño, with temperatures exceeding the upper thermal temperature tolerance threshold of larvae. Effects of El Niño on early life history stages and recruitment rates should be increasingly taken into account in fisheries management strategies.

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“…Two ovigerous Only a few spider crab (Majidae) species have been females of Libinia ferreirae were dredged during reared in the laboratory for measurements of larval October 1988 from ca 10 m depth, off the beach near respiration or growth (in terms of biomass): fibinid Pontal do Sul (Parana, Brazil). They were maintained in emarginata (Schatzlein & Costlow 1978), Hyas araneus a temperature-controlled laboratory of the Centro d e (Anger & Jacobi 1985), H. coarctatus (Jacobi & Anger Biologia Marinha (CBM) at ca 25OC, 3 2 %~ S, until 1985a), and Inachus dorsettensis (Anger 1988a). In the larvae hatched from them on 31 October, and from 2 to present investigation, patterns of larval growth and 3 November, respectively.…”

Section: Introductionmentioning

confidence: 99%

Growth and respiration during the larval development of a tropical spider crab, Libinla ferreirae (Decapoda: Majidae)

Anger¹,

Harms²,

Montu³

et al. 1989

Mar. Ecol. Prog. Ser.

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Larvae of the tropical spider crab hbinia ferreirae were reared in the laboratory from hatching to metamorphosis, and their growth (dry weight, DW; ash-free dry weight, AFDW) and respiration rates were measured. Variations in the rates and patterns of growth were compared in 2 hatches (larvae from different females).The larvae of the more viable hatch grew continuously during the 2 zoeal stages and the beginning of the megalopa stage, with particularly high instantaneous growth rates in the beginning of each moult cycle. The megalopa showed decreasing biomass values prior to metamorphosis. Ash content increased significantly during and shortly after each ecdysis, then remained constant (zoeae) or decreased slightly (megalopa). In contrast, organic substance (AFDW), increased throughout most of the moult cycle. Respiration (oxygen consumption per individual) increased during development of the zoeal stages, and in the megalopa it followed a sinusoidal pattern. Weight-specific respiration rates were high near ecdysis and low during the intermoult stages of the moult cycle. Energy partitioning was compared among the different larval instars by calculating amounts of energy accumulation from AFDW and metabolic energy loss from respiration. Accordmg to these estimates, net growth efficiency (K2) decreases from the first to the last larval instar (57, 36, and 7 %, respectively), whereas respiratory losses increase in the same order. L. ferreirae has been reported being associated with scyphozoans, and it is speculated that highly increasing mortality as observed during and after metamorphosis might be caused by lack of this specific substrate.

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Growth and elemental composition (C, N, H) in Inachus dorsettensis (Decapoda: Majidae) larvae reared in the laboratory

Cited by 24 publications

References 27 publications

Physiological and biochemical changes during the larval development of a brachyuran crab reared under constant conditions in the laboratory

Physiological and biochemical changes during the larval development of a brachyuran crab reared under constant conditions in the laboratory

Influence of temperature on the zoeal development and elemental composition of the cancrid crab, Cancer setosus Molina, 1782 from Pacific South America

Growth and respiration during the larval development of a tropical spider crab, Libinla ferreirae (Decapoda: Majidae)

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