Nutritional effects on ingestion rate, digestive enzyme activity, growth, and biochemical composition of Hyas araneus L. (Decapoda: Majidae) larvae

Harms, J.; Anger, Klaus; Klaus, Sebastian; Seeger, Benedikt

doi:10.1016/0022-0981(91)90178-y

Cited by 58 publications

(47 citation statements)

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“…Variation in environmental key factors such as food availability (Anger & Dawirs, 1982), quality (Harms et al, 1991), salinity (Giménez & Torres, 2002;Giménez & Anger, 2003) or temperature (Dawirs, 1979(Dawirs, , 1985 can have unfavourable effects on growth in the early ontogeny of decapod crustaceans (for review, see Anger, 2001).…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature on the larval development of the edible crab, Cancer pagurus

et al. 2009

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The influence of temperature on larval survival and development was studied in the edible crab, Cancer pagurus, from a population off the island of Helgoland, North Sea. In rearing experiments conducted at six different temperatures (68, 108, 148, 158, 188 and 248C), zoeal development was only completed at 148 and 158C. Instar duration of the Zoea I was negatively correlated with temperature. A model relating larval body mass to temperature and developmental time suggests that successful larval development is possible within a narrow temperature range (148 + 38C) only. This temperature optimum coincides with the highest citrate synthase activity found at 148C. A comparison for intraspecific variability among freshly hatched zoeae from different females (CW 13-17 cm, N ¼ 8) revealed that both body mass and elemental composition varied significantly. Initial larval dry weight ranged from 12.1 to 17.9 mg/individual, the carbon content from 4.6 to 5.8 mg/individual, nitrogen from 1.1 to 1.3 mg/individual, and the C:N ratio from 4.1 to 4.4. A narrow larval temperature tolerance range of C. pagurus as well as the indication of intraspecific variability in female energy allocation into eggs may indicate a potential vulnerability of this species to climate change. Large-scale studies on the ecological and physiological resilience potential of this commercially fished predator are needed.

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Section: Introductionmentioning

confidence: 99%

Influence of temperature on the larval development of the edible crab, Cancer pagurus

et al. 2009

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“…brachyuran crabs) growth is species and stage dependent (Anger 1990(Anger , 1998. Food availability and quality (Anger and Dawirs 1982;Dawirs 1986Dawirs , 1987Harms et al 1991Harms et al , 1994, temperature (Dawirs and Dietrich 1986;Anger 1987), and salinity (Anger et al 1998(Anger et al , 2000 stress can have detrimental effects on growth, decreasing the rate of accumulation of biomass.…”

Section: Introductionmentioning

confidence: 99%

Larval growth in the estuarine crab Chasmagnathus granulata: the importance of salinity experienced during embryonic development, and the initial larval biomass

Giménez

Torres

2002

Marine Biology

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The importance of salinity experienced during embryonic development and initial larval biomass on larval growth was studied in the South American estuarine crab Chasmagnathus granulata. Ovigerous females were maintained at three salinities (15, 20, and 32&) from egg laying to hatching of zoea 1. Larvae from all treatments were reared under constant conditions of photoperiod (12:12), temperature (18°C), and salinity (first instar at 20&, subsequent instars at 32&). Biomass was measured as dry weight, carbon, and nitrogen content per individual at egg laying, hatching of zoea 1, premoult zoea 1, and zoea 4, and in 8-day-old megalopa. From hatching to premoult zoea 4, biomass was higher for larvae from prehatching salinities of 15 and 32&. There was a significant positive correlation between biomass at hatching and at premoult zoea 1 and zoea 4. Accumulated biomass during zoeal stages tended to be higher for larvae from broods with higher biomass at hatching, although this trend was not always significant. Zoea 4 either directly metamorphosed to megalopa or moulted to zoea 5, following, respectively, a short or long developmental pathway. The proportion of zoea 4 that followed the long pathway was negatively correlated with biomass of zoeal stages. Biomass at hatching was correlated with biomass of megalopae developed through the short pathway, although it was not correlated with the accumulated biomass at this stage. Megalopae developed through the long pathway (i.e. metamorphosed from zoeae 5) had higher biomass than those from the short pathway.The present results suggest that prehatching salinity and initial egg and larval biomass can be very important for larval growth.

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“…They typically show a high percentage of protein (>30%), followed by lipids (<20%), chitin (<15%) and free carbohydrates (<5%). Variation is due to differential phylogenetic position and variation in environmental factors such as temperature (Dawirs and Dietrich, 1986;Anger, 1987), food availability (Anger and Dawirs, 1982;Dawirs, 1986Dawirs, , 1987Harms et al, 1991Harms et al, , 1994, and salinity (Pfaff, 1997;Anger et al, 1998Anger et al, , 2000. Temperature, for instance, may affect the reserves accumulated during growth through simultaneous but not always equal changes in instantaneous growth rate and development time (Anger, 1998).…”

Section: Introductionmentioning

confidence: 99%

Effects of reduced salinity on the biochemical composition (lipid, protein) of zoea 1 decapod crustacean larvae

Torres

Giménez

Anger

2002

Journal of Experimental Marine Biology and Ecology

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Effects of reduced salinities on dry weight (DW) and biochemical composition (total lipid and protein contents) of zoea 1 larvae were evaluated in four decapod crustacean species differing in salinity tolerance (Cancer pagurus, Homarus gammarus, Carcinus maenas, Chasmagnathus granulata). The larvae were exposed to two different reduced salinities (15xand 25xin C. granulata, 20x and 25x in the other species) for a long (ca. 50% of the zoea 1 moulting cycle) or a short period (16 h, starting at ca. 40% of the moulting cycle), while a control group was continually maintained in seawater (32x ).In general, the increments in dry weight, lipid and protein content were lower at the reduced salinities than in the control groups. In the zoea 1 of H. gammarus (stenohaline) and C. pagurus (most probably also stenohaline), the lipid and protein contents varied greatly among treatments: larvae exposed to low salinities exhibited very low lipid and protein contents at the end of the experiments compared to the controls. In some cases, there were negative growth increments, i.e. the larvae had, after the experimental exposure, lower lipid and protein contents than at the beginning of the experiment. C. maenas (moderately euryhaline) showed a lower variation in protein and lipid content than the above species. The zoea 1 of C. granulata (fairly euryhaline) showed the lowest variability in dry weight, protein and lipid content. Since salinity tolerance (eury-v. stenohalinity) is associated with the osmoregulatory capacity, our results suggest a relationship between the capability for osmoregulation and the degree of change in the biochemical composition of larvae exposed to variable salinities. Besides larval growth of these species should be affected by natural reductions of salinity occurring in coastal areas at different time scales. These effects may be potentially important for population dynamics since they should influence the number and quality of larvae reaching metamorphosis. D

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Nutritional effects on ingestion rate, digestive enzyme activity, growth, and biochemical composition of Hyas araneus L. (Decapoda: Majidae) larvae

Cited by 58 publications

References 50 publications

Influence of temperature on the larval development of the edible crab, Cancer pagurus

Influence of temperature on the larval development of the edible crab, Cancer pagurus

Larval growth in the estuarine crab Chasmagnathus granulata: the importance of salinity experienced during embryonic development, and the initial larval biomass

Effects of reduced salinity on the biochemical composition (lipid, protein) of zoea 1 decapod crustacean larvae

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