The Ecology of Gammarus duebeni Lilljeborg and its Occurrence in Fresh Water in Western Britain

Hynes, H. B. N.

doi:10.2307/1660

Cited by 213 publications

(146 citation statements)

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“…Hynes (1954) assumed temperature difference to correspond to the variation of life history in G. duebeni between Port Erin Stream and Gansey Beach. Variation oflife history of Hyalella aztew is also ascribed to temperature Strong (1973) reported for H. aztec a that hot spring population followed the life history of type I, as noted above, though stream population near the hot spring restricted its breeding season.…”

Section: Patterns Of Life History Phenomena In Gammaridean Amphipodamentioning

confidence: 99%

“…Many studies are directed to contribute to the biology of a species (Watkin, 1941 ;Amanieu, 1969;Steele, 1969--1975c;Dexter, 1971;etc. ) and some have been done to afford the basis for production study of a species (Cooper, 1965;Klein, 1975) and still some are with the intention to give ecological consideration of niche or population in several species (Hynes, 1954;Croker, 1967;Sameoto, 1969a,b). Only a few, however, treated the life history in its morphological aspect.…”

Section: Introductionmentioning

confidence: 99%

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STUDIES ON THE TALITRIDAE (AMPHIPODA, CRUSTACEA) IN JAPAN -III. LIFE HISTORY AND BREEDING ACTIVITY OF ORCHESTIA PLATENSIS KRφYER-

Morino¹

1978

Publ. SMBL

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Section: Patterns Of Life History Phenomena In Gammaridean Amphipodamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

STUDIES ON THE TALITRIDAE (AMPHIPODA, CRUSTACEA) IN JAPAN -III. LIFE HISTORY AND BREEDING ACTIVITY OF ORCHESTIA PLATENSIS KRφYER-

Morino¹

1978

Publ. SMBL

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“…A constraint on interbreeding between G. d. duebeni and G. d. celticus was proposed for some natural populations because of slight differences in breeding season (Hynes, 1954). However, freshwater populations in Ireland and Brittany occupy the warmest sites in the species' entire N Atlantic distribution and it has not been determined whether differences in reproductive cycles persist under common thermal regimes.…”

Section: Introductionmentioning

confidence: 99%

Phylogeography and environmental diversification of a highly adaptable marine amphipod, Gammarus duebeni

et al. 2007

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Genetic diversity and phylogeographic population structure in the gammarid amphipod, Gammarus duebeni, were investigated across its broad latitudinal distribution in the NE and NW Atlantic by analysis of mitochondrial DNA sequence. Gammarus duebeni has exceptional tolerance of salinity change and inhabits environments ranging from marine to freshwater. The longstanding debate on whether there are distinct marine and freshwater subspecies was assessed by sampling populations from sites characterized by different salinities. Our sequence data demonstrates that there are two major lineages, with little internal geographic structuring. Evidence is provided to suggest a pre-glacial divergence of these two clades, involving segregation between a region historically associated with the freshwater form and the majority of the marine localities on both sides of the Atlantic. A modern contact zone between the marine and freshwater forms is proposed in western Britain.

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“…Although it is unclear what limits Gammarus population size, many believe that G. duebeni subsp. celticus and G. pulex have similar carrying capacities (Hynes 1954;Dick et al 1993). Hence, we can make the simplifying assumption K p ϭ K d ϭ K. The two species have been assumed to have symmetrical effects on each other in resource competition (Dick et al 1993).…”

Section: Discussionmentioning

confidence: 99%

“…While G. duebeni subsp. celticus and G. pulex are considered ''ecological equivalents'' in terms of trophic level, susceptibility to higher predators, and habitat use (Hynes 1955;Dick et al 1993;MacNeil et al 1999b), it is not competition, but differential intraguild predation (IGP), that is crucial in this replacement (Dick 1992;Dick et al 1993;MacNeil et al 2001). Further, we have recently shown that parasitism influences the severity of IGP between these and other Gammarus spp.…”

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confidence: 99%

A species invasion mediated through habitat structure, intraguild predation, and parasitism

MacNeil

Dick

Johnson

et al. 2004

Limnology & Oceanography

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With field, laboratory, and modeling approaches, we examined the interplay among habitat structure, intraguild predation (IGP), and parasitism in an ongoing species invasion. Native Gammarus duebeni celticus (Crustacea: Amphipoda) are often, but not always, replaced by the invader Gammarus pulex through differential IGP. The muscle-wasting microsporidian parasite Pleistophora mulleri infects the native but not the invader. We found a highly variable prevalence of P. mulleri in uninvaded rivers, with 0-91% of hosts parasitized per sample. In addition, unparasitized natives dominated fast-flowing riffle patches of river, whereas parasitized individuals dominated slower-flowing, pooled patches. We examined the survivorship of invader and native in single and mixed-species microcosms with high, intermediate, and zero parasite prevalence. G. pulex survivorship was high in all treatments, whereas G. duebeni subsp. celticus survivorship was significantly lower in the presence of the invader. Further, parasitized G. duebeni subsp. celticus experienced near-total elimination. Models of the species replacement process implied that parasite-enhanced IGP would make invasion by G. pulex more likely, regardless of habitat and parasite spatial structure. However, where heterogeneity in parasite prevalence creates a landscape of patches with different susceptibilities to invasion, G. pulex may succeed in cases where invasion would not be possible if patches were equivalent. The different responses of parasitized and unparasitized G. duebeni subsp. celticus to environmental heterogeneity potentially link landscape patterns to the success or failure of the invasion process.

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The Ecology of Gammarus duebeni Lilljeborg and its Occurrence in Fresh Water in Western Britain

Cited by 213 publications

References 0 publications

STUDIES ON THE TALITRIDAE (AMPHIPODA, CRUSTACEA) IN JAPAN -III. LIFE HISTORY AND BREEDING ACTIVITY OF ORCHESTIA PLATENSIS KRφYER-

STUDIES ON THE TALITRIDAE (AMPHIPODA, CRUSTACEA) IN JAPAN -III. LIFE HISTORY AND BREEDING ACTIVITY OF ORCHESTIA PLATENSIS KRφYER-

Phylogeography and environmental diversification of a highly adaptable marine amphipod, Gammarus duebeni

A species invasion mediated through habitat structure, intraguild predation, and parasitism

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