Pelagic juveniles of the deep-sea elasipodid holothurians: New records and review

Gebruk, A.V.; Tyler, Paul A.; Billett, David

doi:10.1080/00785326.1997.10432581

Cited by 13 publications

(11 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The period prior to June 1990 may have been a time when the food resource was less limiting, but as yet similar mass recruitments have not been seen since. longicauda, for example, have been taken from thousands of meters above the seafloor , Gebruk et al 1997. Several of the species observed here were also common at the PAP site in the northeast Atlantic where the abundance of the megabenthos had significant (P , 0.05) variations from 1989 to 1999 .…”

Section: Discussionmentioning

confidence: 59%

Abundance and Size Distribution Dynamics of Abyssal Epibenthic Megafauna in the Northeast Pacific

Ruhl

2007

Ecology

101

View full text Add to dashboard Cite

The importance of interannual variation in deep-sea abundances is now becoming recognized. There is, however, relatively little known about what processes dominate the observed fluctuations. The abundance and size distribution of the megabenthos have been examined here using a towed camera system at a deep-sea station in the northeast Pacific (Station M) from 1989 to 2004. This 16-year study included 52 roughly seasonal transects averaging 1.2 km in length with over 35600 photographic frames analyzed. Mobile epibenthic megafauna at 4100 m depth have exhibited interannual scale changes in abundance from one to three orders of magnitude. Increases in abundance have now been significantly linked to decreases in mean body size, suggesting that accruals in abundance probably result from the recruitment of young individuals. Examinations of size-frequency histograms indicate several possible recruitment events. Shifts in size-frequency distributions were also used to make basic estimations of individual growth rates from 1 to 6 mm/month, depending on the taxon. Regional intensification in reproduction followed by recruitment within the study area could explain the majority of observed accruals in abundance. Although some adult migration is certainly probable in accounting for local variation in abundances, the slow movements of benthic life stages restrict regional migrations for most taxa. Negative competitive interactions and survivorship may explain the precipitous declines of some taxa. This and other studies have shown that abundances from protozoans to large benthic invertebrates and fishes all have undergone significant fluctuations in abundance at Station M over periods of weeks to years.

show abstract

Section: Discussionmentioning

confidence: 59%

Abundance and Size Distribution Dynamics of Abyssal Epibenthic Megafauna in the Northeast Pacific

Ruhl

2007

Ecology

101

View full text Add to dashboard Cite

show abstract

“…Mayr 1970, Mileikovsky 1971, Cnsp 1974, Underwood 1974, Obrebski 1979, Jablonski & Lutz 1983, Valentine & Jablonski 1983, Grahame & Branch 1985, Scheltema 1986, Havenhand 1995, Levinton 1995, Wray 1995. Although considerable dispersal can also be ach~eved by egg masses and small juveniles in both aplanktonic and planktonic life cycles (Highsmith 1985, Jackson 1986, Scheltema 1986, Johannesson 1988, Jokiel 1989, O'Foighil 1989, Martel & Chia 1991, Giangrande et al 1994, Helmuth et al 1994, Gebruk et al 1997, and although free-living larvae do not guarantee extensive dispersal (Burton 1986, Prince et al 1987, Petersen & Svane 1995, Parsons 1996, long-lived larval stages confer greater dispersal potential in general (Shuto 1974, Jablonski & Lutz 1983, Jackson 1986, Emlet et al 1987, Grantham 1995, Palumbi 1995, Scheltema 1995. Under some current regimes, larvae may be retained near or return to the parental habitat despite a long period in the plankton (Johnson 1971, Knowlton & Keller 1986, Young & Chia 1987, Pollock 1992, Shanks 1995, Scheltema et al 19...…”

Section: Advantages and Disadvantages Of Dispersalmentioning

confidence: 99%

On the advantages and disadvantages of larval stages in benthic marine invertebrate life cycles

Pechenik¹

1999

Mar. Ecol. Prog. Ser.

597

424

View full text Add to dashboard Cite

many benthic marine invertebrates develop by means of free-livlng, dispersive larval stages. The presumed advantages of such larvae include the avoidance of competition for resources with adults, temporary reduct~on of benthic mortality while in the plankton, decreased likelihood of inbreeding in the next generation, and increased ability to withstand local extinction However, the direct~on of evolutionary change appears generally b~a s e d toward the loss of larvae in many clades, implying that larvae are somehow disadvantageous. Poss~ble disadvantages include dispersal away from favorable habitat, mismatches between larval and luvenile physiological tolerances, greater susceptib~lity to env~ronmental stresses, greater susceptibihty to predation. and vanous costs that may be associated with n~etanlorphosing in response to specific chemical cues and postponing n~etamorphosis in the absence of those cues. Understanding the forces responsible for the present distribution of larval and non-larval (aplanktonlc) development among benthic marine invertebrates, and the potential influence of human activities on the direct~on of future evolutionary change in 1-eproductlve patterns, will require a better understanding of the following issues. the role of macro-evolutionary forces in selecting for or against dispersive larvae, the relative tolerances of encapsulated embryos and free-living larvae to salinity, pollutant, and other environmental stresses; the degree to which egg masses, e g g capsules, and brood chambers protect developing embryos from environmental stresses; the relative magmtude of predation by planktonic and benthic predators on both larvae and early juveniles; the way In which larval and juvenile size affect vulnerability to predators; the extent to w h~c h encapsulation and brooding protect against predators; the amount of genetic change associated with loss of larvae from invertebrate life cycles and the time required to accomplish that change; and the degree to which continued input of larvae from other populations deters selection against dispersive larvae The prominence of larval development in modern life cycles may reflect difficulties In loslng larvae from llfe cycles more than selection for their retention.

show abstract

“…LOCALITIES: "Meteor", 1988/6 MOC1-11: B-7; "Discovery", St. 9756#6 (Gebruk et al, 1997); numerous other localities in the North-East Atlantic (Billett et al, 1985); "James Cook" ECOMAR, St. JC048/43 Dive 174 (Rogacheva et al, 2013).…”

Section: Enypniastes Eximia (Théel 1882)mentioning

confidence: 99%

Deep-sea fauna of European seas: An annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Holothuroidea

Gebruk

Смирнов

2014

Invertzool

Self Cite

View full text Add to dashboard Cite

An annotated checklist is given of Holothuroidea species occurring deeper than 2000 m in the seas bordering Europe. The checklist is based on published data. The checklist includes 78 species. For each species synonymy, data on localities in European seas and general species distribution are provided. Station data are presented separately in the present thematic issue. How to cite this article: Gebruk A.V., Smirnov A.V., Rogacheva A.V. 2014. Deep-sea fauna of European seas: An annotated species checklist of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Holothuroidea // Invert.

show abstract

Pelagic juveniles of the deep-sea elasipodid holothurians: New records and review

Cited by 13 publications

References 4 publications

Abundance and Size Distribution Dynamics of Abyssal Epibenthic Megafauna in the Northeast Pacific

Abundance and Size Distribution Dynamics of Abyssal Epibenthic Megafauna in the Northeast Pacific

On the advantages and disadvantages of larval stages in benthic marine invertebrate life cycles

Deep-sea fauna of European seas: An annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Holothuroidea

Contact Info

Product

Resources

About