Open WL Archief (OWA)

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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [41249]

Reproduction in the amphipod, Echinogammarus marinus: a comparison between normal and intersex specimens Ford, A.T.; Fernandes, T.F.; Rider, S.A.; Read, P.A.; Robinson, C.D.; Davies, I.M. (2003). Reproduction in the amphipod, Echinogammarus marinus: a comparison between normal and intersex specimens. J. Mar. Biol. Ass. U.K. 83(5): 937-940. https://dx.doi.org/10.1017/S0025315403008099h In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 336169 [ aanvragen ]

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Trefwoorden

Biological development > Embryonic development Cells > Sexual cells > Eggs Properties > Biological properties > Fecundity Reproduction > Sexual reproduction Echinogammarus marinus (Leach, 1816) [WoRMS] ANE, British Isles, Scotland [Marine Regions] Marien/Kust

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Auteurs		Top
Ford, A.T. Fernandes, T.F. Rider, S.A.	Read, P.A. Robinson, C.D. Davies, I.M., meer

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Abstract

The fecundity and occurrence of intersexuality in the amphipod, Echinogammarus marinus, collected from populations on the east coast of Scotland are reported. Intersex specimens have significantly smaller mean brood sizes than normal specimens. Embryo survival, as measured by the ratio of eggs/embryos in early and late stages of development, is lower in intersex specimens than normal specimens. Greater differences in the number of early stage eggs compared with late stage eggs in intersex specimens is suggested to arise by the active ejection of non-viable eggs, or from the passive loss of eggs through malformed brood plates in females. An apparent reduction in brood sizes between early and late stages of development in ‘normal’ specimens, emphasizes the importance of quantifying different egg/embryo stages in amphipod toxicology and fecundity studies.

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