Post-Embryonic Development of Laboratory-Reared Ocean Shrimp, Pandalus Jordani Rathbun

Modin, J. C.; Cox, Keith W.

doi:10.1163/156854067x00369

Cited by 19 publications

(9 citation statements)

References 20 publications

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“…j Yatsuzuka (1962), Modin & Cox (1967), and Kon (1979). These authors described lowered survival in decapod larvae, when feeding commenced too late following hatching.…”

Section: Discussionmentioning

confidence: 99%

“…There are a few references to such effects: Kurata (1959), Yatsuzuka (1962), Modin & Cox (1967), and Kon {1979} observed a particularly critical period in the very beginning of larval life in decapods: if first feeding was delayed, growth and survival of the larvae were lowered. Paul & Paul (1980) observed in king crab zoeae a significantly decreasing ability to catch prey after early starvation.…”

Section: Introductionmentioning

confidence: 99%

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Influence of starvation on the larval development ofHyas araneus (Decapoda, Majidae)

Anger

Dawirs

1981

Helgoländer Meeresunters

151

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The influence of starvation on larval development of the spider crab Hyas araneus (L.) was studied in laboratory experiments. No larval stage suffering from continual lack of food had sufficient energy reserves to reach the next instar. Maximal survival times were observed at four different constant temperatures (2 °, 6 °, 12 ° and 18 °C). In general, starvation resistance decreased as temperatures increased: from 72 to 12days in the zoea-1, from 48 to 18 days in the zoea-2, and from 48 to 15 days in the megalopa stage. The length of maximal survival is of the same order of magnitude as the duration of each instar at a given temperature. "Sublethal limits" of early starvation periods were investigated at 12 °C: Zoea larvae must feed right from the beginning of their stage (at high food concentration) and for more than one fifth, approximately, of that stage to have at least some chance of surviving to the next instar, independent of further prey availability. The minimum time in which enough reserves are accumulated for successfully completing the instar without food is called "point-of-reserve-saturation" (PRS). If only this minimum period of essential initial feeding precedes starvation, development in both zoeal stages is delayed and mortality is greater, when compared to the fed control. Starvation periods beginning right after hatching of the first zoea cause a prolongation of this instar and, surprisingly, a slight shortening of the second stage. The delay in the zoea-1 increases proportionally to the length of the initial fasting period. If more than approximately 70 % of the maximum possible survival time has elapsed without food supply, the larvae become unable to recover and to moult to the second stage even when re-fed ("point-of-no-return", PNR). The conclusion, based on own observations and on literature data, is that initial feeding is of paramount importance in the early development of planktotrophic decapod larvae. Taking into account hormonal and other developmental processes during the first moult cycle, a general hypothesis is proposed to explain the key role of first food uptake as well as the response pattern of the zoea-1 stage to differential starvation periods.

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“…j Yatsuzuka (1962), Modin & Cox (1967), and Kon (1979). These authors described lowered survival in decapod larvae, when feeding commenced too late following hatching.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of starvation on the larval development ofHyas araneus (Decapoda, Majidae)

Anger

Dawirs

1981

Helgoländer Meeresunters

151

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“…Reed (1969) and Modin & Cox (1967) both used compartmented styrine containers with synthetic screening bottom (202 btm). Modin & Cox (1967) succesfully raised larvae of Pandalus jordani individually in order to describe larval stages. Nevertheless, survival rate was rather low, 0.2 % metamorphosed to the last instar.…”

Section: Enclosures For Isolated Rearingmentioning

confidence: 99%

Methodical aspects of rearing decapod larvae,Pagurus bernhardus (Paguridae) andCarcinus maenas (Portunidae)

Dawirs

1982

Helgolander Meeresunters

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Improved methods for experimental rearing of Pagurus bernhardus and Carcinus maenas larvae are presented. Isolated maintenance was found essential for reliable statistical evaluation of results obtained from stages older than zoea-1. Only by isolated rearing is it possible to calculate mean values +_ 95 % confidence intervals of stage duration. Mean values (without confidence intervals) can only be given for group-reared larvae if mortality is zero. Compared to group rearing, isolated rearing led to better survival, shorter periods of development and stimulated growth. Due to different swimming behavior P. bemhardus zoeae needed larger water volumes than Carcinus maenas larvae. P. bernhardus zoeae were reared with best results when isolated in Petri dishes (ca. 50 mI). They fed on newly hatched brine shrimp nauplii (Artemia spp.). P. bernhardus megalopa did not require any gastropod shell or substratum; it developed best in glass vials without any food. C. maenas larvae could be reared most sucessfully in glass vials (ca 20 ml) under a simulated day-night regime (LD 16:8); constant darkness had a detrimental effect on development, leading to prolonged stage-duration times. C. maenas larvae were fed a mixture of newly hatched brine shrimp naupli and rotifers (Brachionus plicatilis).

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“…Unless the filtration area is large relative to the water flow, the larvae may become caught on the filter and damaged. This problem was overcome by MODIN & Cox (1967) by placing the larvae in floating compartmented boxes, the bottoms of which had been replaced by plastic mesh. This apparatus thus incorporates features of the compartmented box method and of the perspex cylinders mentioned above, together with a closed circulation system in which the water is sterilised with ultraviolet light, filtered and cooled.…”

Section: R E a R I N G M E T H O D S I N V O L V I N G W A T E R C I mentioning

confidence: 99%

Methoden zur Zucht larvaler decapoder Crustaceen

Rice

Williamson

1970

Helgolander Wiss. Meeresunters

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Post-Embryonic Development of Laboratory-Reared Ocean Shrimp, Pandalus Jordani Rathbun

Cited by 19 publications

References 20 publications

Influence of starvation on the larval development ofHyas araneus (Decapoda, Majidae)

Influence of starvation on the larval development ofHyas araneus (Decapoda, Majidae)

Methodical aspects of rearing decapod larvae,Pagurus bernhardus (Paguridae) andCarcinus maenas (Portunidae)

Methoden zur Zucht larvaler decapoder Crustaceen

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