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1

Quantitative studies on Gammarus Fabr. genus in Puck Bay [the Baltic Sea]

100%
Jeczmien W., Szaniawska A.
Polskie Archiwum Hydrobiologii
|
2000
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tom 47
|
nr 3-4
2

The helminth fauna of Gammarus spp. [Amphipoda] from the south-east Baltic Sea [Poland]

84%
Sulgostowska T., Vojtkova L.
Acta Parasitologica
|
1992
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tom 37
|
nr 4
A total of 863 specimens of Gammarus spp. was examined for helminth parasites. The amphipods were collected in the summers of 1988-1990 from 5 places along the shore of the south-east Baltic. Five species of parasites were found: metacercariae of Maritrema subdolum, Spelotrema papillorobustum and Levinseniella propinqua, cysticercoids of Microsomacanthus abortiva and cystacanths of Polymorphus contortus.
3
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Invertebrate fauna of the Minina River, taking into account environmental factors

67%
Stryjecki R.
Zeszyty Naukowe. Acta Biologica. Uniwersytet Szczeciński
|
2011
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tom 18
A total of 5,613 macroinvertebrate specimens, belonging to 43 taxa of varying systematic positions, were collected at four study sites in the Minina River. Dominant in the material collected were Gammarus sp. (33.9%), Chironomidae larvae (30.4%) and Ephemera sp. larvae (7.0%). More individuals (3,551) and taxa (39) were caught in the lentic zone than in the lotic zone (2,062 specimens and 30 taxa). The biological diversity index ranged from 1.57 to 3.14 within the sites and from 1.04 to 3.77 within habitats (zones of the river). The taxonomic composition and the abundance of the fauna were mainly in fluenced by biotic factors (e.g. amount of aquatic vegetation) and abiotic factors (e.g. water current and type of bottom sediment), while human impact (presence of hydraulic structures, straightening of the river bed) did not significantly affect the fauna.
4
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Crustacean species as a source of infection of Baltic cod (Gadus morhua) with intestinal helminths

67%
Pawlak J., Nadolna-Altyn K., Podolska M.
Annals of Parasitology
|
2016
|
tom 62
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nr Suppl.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Changes in species composition of the genus Gammarus Fabr. in Puck Bay

67%
Jeczmien W., Szaniawska A.
Oceanologia
|
2000
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tom 42
|
nr 1
This paper describes the current species composition of the genus Gammarus in Puck Bay (western Gulf of Gdańsk, Poland).Sa mples were taken at 9 shallow (ca 0.4 m deep) and 4 deeper (ca 10 m) stations from April 1997 to March 1998. Six Gammarus species were recorded. Gammarus salinus was the most numerous, making up 34.95% of the total of identified amphipod specimens. This species was common throughout the bay but rarely predominant. G. zaddachi (34.75%) was dominant in the northern part of the bay from January to April and was found in almost 2/3 of samples.Less numerous were G. oceanicus (19.15%), common in the southern and eastern parts of Puck Bay, and G. duebeni (9.85%), prevalent in shallow and rocky locations. G. inequicauda and G. locusta made up only 1.13% and 0.12% of the total amphipod material respectively. The species composition of the genus varied considerably not only from one sampling locality to another but also from season to season.I t is possible that two species (G. locusta and G. inequicauda) are currently withdrawing from Puck Bay.
6

Resources and bottom macrofauna structure in Puck Bay in the 1960 and 1980

59%
Zmudzinski L.
Oceanological Studies
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1997
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tom 26
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nr 1
7
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What is the diet of Palaemon elegans Rathke, 1837 (Crustacea, Decapoda), a non-indigenous species in the Gulf of Gdańsk (Southern Baltic Sea)?

51%
Janas U., Baranska A.
Oceanologia
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2008
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tom 50
|
nr 2
221-237
Palaemon elegans, a new component of the Gulf of Gdańsk macrozoobenthos, colonised the southern Baltic coastal zone in the late 20th and early 21st century. Analysis of the stomach contents of P. elegans revealed 16 plant and animal taxa that these prawns had fed on. The principal dietary component was detritus, with a mean frequency of occurrence in stomachs of > 80%. The most frequently occurring plant components in the diet were algae from the genus Cladophora and the family Ectocarpaceae, while the most significant animal components were Harpacticoida, Chironomidae, Ostracoda and Gammarus spp. The results of the study show that the dietary composition of P. elegans differed significantly between stations and months. The foraging area consisted of two distinctive regions – the Inner Puck Bay, and the Outer Puck Bay together with the Dead Vistula River; two of the stations – Gdynia and Sopot – were distinct from all the others. However, no obvious seasonality in the food composition could be demonstrated.
8

Precociously developed Ascarophis sp. [Nematoda, Spirurata] and Hemiurus levinseni [Digenea, Hemiuridae] in their crustacean intermediate hosts

51%
Jackson C. J., Marcogliese D. J., Burt M. D. B.
Acta Parasitologica
|
1997
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tom 42
|
nr 1
Two adult and one subadult (L₅) Ascarophis sp. were recovered from amphipods Gammarus spp. sampled in Métis Bay, Quebec. Sexually mature metacercariae of Hemiurus levinseni were found in the mysids Neomysis americana and Mysis stenolepis collected from St. George’s and St. Ann’s Bay, Nova Scotia. Both of these helminths are normally parasites of fish as adults. Precocious development may result in either the acceleration of gamete production in an intermediate host or a shortened life cycle where the usual obligatory vertebrate host is no longer required.
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