The role of Callionymus lyra and C. reticulates in the life cycle of Lernaeocera lusci in Belgian coastal waters (Southern Bight of the North Sea)

Damme, Paul A. Van; Maertens, D.; Arrumm, AA; Hamerlynck, Olivier; Ollevier, Frans

doi:10.1111/j.1095-8649.1993.tb00342.x

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…In this investigation Annelida "Branchiobdella hexodonta" which known as crayfish "Branch worm" was discovered from freshwater crayfish "Astacus leptodactylus" spices for the first time in Iranian inland water resources. by the way, this worm only has parasitism freshwater crayfish and is host specific for the crayfish "Astacus leptodactylus" [28]. Finally, none of the nematode larvae, Rhabdochona sp.…”

Section: Disscussionmentioning

confidence: 99%

Determination of Parasite Fauna on Freshwater Crayfish “Astacus leptodactylus” (Eschscholtz, 1823) In the Arass Dam Reservoir, Northwest of Iran

2017

J Fish Aquac Dev

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During the research, from date May 24 to June 26 in year 2015, about 140 specimens of freshwater crayfish with scientific name "Astacus leptodactylus" were captured by funnel baited traps from different stations of the lake and transported to laboratory. A total range of 68 freshwater crayfish specimens out of 140 crayfish with Prevalence rate equal to % 48.5 and mean infection intensity of 4.6, were affected by a kind of parasite called, Branchiobdella hexodonta. This parasite was recovered from carapace and gills of the crustacea. The highest number range of parasite (1-23 number) was seen in length range of 10.6-12.6cm and the lowest number range of parasite (1-11number) observed in length range between 12.7 to 14.9cm. Maximum mean intensity (6.3 number) was in length range of 10.6-12.6cm and minimum mean intensity (3.1 number) was between 12.7 to 14.9. Maximum average abundance (3.6 number) was in length range 10.6-12.6, while minimum average abundance (0.88 number), accounted in length range 8.1-10.5cm. prevalence rate (32%) and mean intensity (4.3) in carapace was higher, in comparison to gills, with prevalence and mean intensity of 20.9% and 2.8, respectively. by increasing length size of crayfish, prevalence rate was increased too. It is worthy of mention that, this worm only parasitism freshwater crayfish, and crayfish is specific host for the parasite. Meanwhile, Annelida Branchiobdella hexodonta, which known as crayfish "Branch worm" is reported for the first time from Iran freshwater crayfish. this worm only parasitism freshwater crayfish and is host specific for crayfish. finally, nematode larvae of Rhabdochona sp. and Cystidicola sp. have not parasitic nature and only have a Commensal state or free-living form, and crayfish act as an intermediate host for them.

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Section: Disscussionmentioning

confidence: 99%

Determination of Parasite Fauna on Freshwater Crayfish “Astacus leptodactylus” (Eschscholtz, 1823) In the Arass Dam Reservoir, Northwest of Iran

2017

J Fish Aquac Dev

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How host size may constrain the evolution of parasite body size and clutch size. The parasitic isopod Ichthyoxenus fushanensis and its host fish, Varicorhinus bacbatulus, as an example

Tsai¹,

Li²,

Dai³

2001

Oikos

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The flesh‐burrowing parasitic isopod Ichthyoxenus fushanensis was found infecting the body cavity of a freshwater fish, Varicorhinus bacbatulus, in heterosexual pairs. Herein we investigate the question of how the host body size may constrain the parasite size and clutch size by analyzing the interactions among the body size and clutch size of the parasite, and host size. Due to the low transmission rate of I. fushanensis to its host and the positive relationship between clutch size and female size, selection may favor larger females with larger clutch sizes to compensate for massive losses of manca (the free‐living juveniles). The path model reveals that clutch size depends not only directly on female size, but also on the sizes of her host and mate. Female size also depends on the sizes of the host and her mate. A negative correlation exists between the body sizes of the paired males and females. This negative correlation may be regarded as a consequence of competition for limited available space or other resources provided by the host. The effects of host size on parasite size, however, act on the total volume of both sexes as a whole, not specifically on either the female or the male. In this case, the available space/resources may not allow both individuals of different sexes to evolve toward a larger size simultaneously. Under the constraint of host size, a strategy of reducing the body size of the paired male may provide a way to increase the body size of the paired female and achieve a larger clutch size.

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Environmental Pollution in Belgium and Implications for Aquatic Health

Okon

Okocha

Yakubu

et al. 2022

Preprint

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Pollution is one of the primary contributors to the decline of biodiversity, and one of the most significant challenges facing the aquatic environment. Aquatic pollution comes from introducing a wide variety of substances negatively impacting the water bodies. Although Belgium's aquaculture and fisheries industry are underdeveloped and production is relatively low, pollutants from the environment and industry can affect the aquatic ecosystems and the behaviour of aquatic species. Therefore, research into the freshwater and marine environment is an essential component of assessing the levels of environmental pollution and proffering sustainable management and restoration practices. This study aims to present an in-depth assessment of aquatic pollution and its impacts on aquaculture and fisheries species. This review identified various studies on aquatic pollution in Belgium and discussed their implications on aquatic health. It covered surface water, groundwater, nutrient, oil, debris, microplastic, and sediment pollution across various sampling locations. This study identified a need to establish a framework for river basins in Belgium to allow for more accurate predictions regarding where land changes pose a considerable threat to aquatic populations. Furthermore, studies on microplastic pollution in the future should incorporate freshwater, estuarine, and terrestrial settings. Findings from such studies will allow for a better understanding of the whole scope of microplastic pollution.

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The role of Callionymus lyra and C. reticulates in the life cycle of Lernaeocera lusci in Belgian coastal waters (Southern Bight of the North Sea)

Cited by 4 publications

References 13 publications

Determination of Parasite Fauna on Freshwater Crayfish “Astacus leptodactylus” (Eschscholtz, 1823) In the Arass Dam Reservoir, Northwest of Iran

Determination of Parasite Fauna on Freshwater Crayfish “Astacus leptodactylus” (Eschscholtz, 1823) In the Arass Dam Reservoir, Northwest of Iran

How host size may constrain the evolution of parasite body size and clutch size. The parasitic isopod Ichthyoxenus fushanensis and its host fish, Varicorhinus bacbatulus, as an example

Environmental Pollution in Belgium and Implications for Aquatic Health

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