Petrolisthes Armatus: a Redescription of Larval Development Under Laboratory Conditions (Decapoda, Porcellanidae) 1)

Gore, Robert H.

doi:10.1163/156854070x00086

Cited by 30 publications

(22 citation statements)

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“…This finding might be explained simply by the well-known temperature dependence of metabolic processes; however, this explanation would be too simple. As shown by Rice & Provenzano (1965), Provenzano (1967Provenzano ( , 1968b, and Gore (1970), not necessarily the lowest, but often the o p t i m a I temperature allows longest survival in starved decapod larvae. Some tropical species, for example, are killed by temperatures of I0 ° to 15 ° C, long before their reserves have been used up (Provenzano, pets.…”

Section: Discussionmentioning

confidence: 96%

“…Maximal survival time (S) under starvation is in the same order of magnitude as the "normal" duration (D) of each stage at a given temperature, mostly S is usually slightly higher than D. Similar relationships (S --D) were also observed by Knowlton (1974), Roberts (1974), Yaqoob (1977}, andProvenzano (1978). Deviations from this rule were observed at temperatures below the optimal range (Gore, 1968(Gore, , 1970Provenzano, 1967Provenzano, , 1968b. In these cases, survival was considerably shorter than development (if this was, at all, possible}; in the optimal range, S and D were again similar.…”

Section: Discussionmentioning

confidence: 97%

“…However, its effect is by no means clear. In the few experiments which have been carried out, results are equivocal: In some cases, survival time under starvation increases with decreasing temperature (Rice & Provenzano, 1966;Gore, 1968;Regnault, 1969), in other instances there is the opposite trend (Rice & Provenzano, 1965;Provenzano, 1967;Gore, 1970} or survival time is independent of temperature over a wide range (Gore, 1972} or shows a maximum at an intermediate temperature (Provenzano, 1968b). In the literature reviewed above, only survival under long-term starvation was considered.…”

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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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Anger

Dawirs

1981

Helgoländer Meeresunters

151

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“…Porcellana sigsbeiana e P. sayana (Gore, 1970;Gore, 1971;Hernández et al, 1998;Díaz-Ferguson et al, 2008), espécies com registro de ocorrência na costa paraense (Melo, 1999).…”

Section: Discussionunclassified

“…Considerando os porcelanídeos, tem sido relatada principalmente a influência da temperatura na sobrevivência e duração dos estágios larvais de algumas espécies, por exemplo, P. armatus e Petrolisthes tridentatus (Gore, 1970;Gore, 1971). Em relação à salinidade, Díaz-Ferguson et al (2008) consideraram este fator como o principal regulador da distribuição temporal das larvas do porcelanídeo P. armatus em uma região estuarina da Costa Rica.…”

Section: Discussionunclassified

Abundância das larvas de Porcellanidae (Decapoda, Anomura) no meroplâncton do estuário do Rio Caeté, estuário amazônico brasileiro

Carvalho¹,

Nevis²,

Oliveira³

et al. 2014

Braz. J. Aquat. Sci. Technol.

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The life cycle of these species includes only two zoeal stages, which are distinctive by their very elongate rostral and posterolateral carapace spines, and are commonly found in estuarine meroplanktonic samples. The present study provides information about the abundance of porcellanid larvae at an estuarine system in the Amazon coastal zone, aiming to understand their distribution in relation to some physicochemical variables: seasonal, diel, tidal and lunar cycles, temperature and salinity. Samples were collected monthly from April 2000 to April 2001 with a plankton conical net with 300μm of mesh size, by horizontal hauls, in the Caeté River estuary, Pará, Brazil. Only zoeal stages of porcellanid larvae were found. In general, their abundance was greater in dry season (8.08±11.43 larvae.m -3 ) in relation to rainy season (0.99±3.13 larvae.m -3 ), and flood tide (7.52±11.40 larvae.m -3 ) in relation to ebb tide (1.11±2.14 larvae.m -3 ). Greater densities were also registered at higher degrees of salinity. The other variables, moon phases, diel cycle and temperature, had not a significant influence on porcellanid larval abundance in the Caeté River estuary.

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Adaptation of Bathynellacea (Crustacea, Syncarida) to Life in the Interstitial (“Zoea Theory”)

Schminke

1981

Intl Review of Hydrobiology

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AbstrackThis study aims a t demonstrating that the Bathynellacea arose by neoteny from a zoea-like anrestor ("Zoea Theory"). Bathynellacee basically hare a larral morphology. Their post-embryonic development passes through phases which are directly comparable with some in the derelopment of primitive Eucarida. These phases are called the parazoeal and bathynellid phase, and correspond to the protozoeal and eoeal phase of Penaeidea, respectively. Running initially parallel to that of Penaeidea, the development of the Bathynellacea breaks off precociously. They reach sexual maturity at a stage which, in the Penaeidea, is followed by metamorphosis. There are reasons to assume that the development of all Syncarida originally passed t.hrough a series of free-living larval stages and underwent metamorphosis. The bathynellaceans reach adulthood a t a stage which corresponds to the last larval stage of their ancestor. The ecological path to interstitial life of the Bathynellacea and the bearing of the "Zoea Theory" upon views as to their phylogenetic position are discussed. The classical example of a group of crustaceans thought to have arisen by neoteny, the Cladocera, is critically examined and found to be in need of reevaluation.

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Petrolisthes Armatus: a Redescription of Larval Development Under Laboratory Conditions (Decapoda, Porcellanidae) 1)

Cited by 30 publications

References 0 publications

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

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

Abundância das larvas de Porcellanidae (Decapoda, Anomura) no meroplâncton do estuário do Rio Caeté, estuário amazônico brasileiro

Adaptation of Bathynellacea (Crustacea, Syncarida) to Life in the Interstitial (“Zoea Theory”)

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