Parasites of the deep-sea fish Mora moro (Risso, 1810) from the NW Mediterranean Sea and relationship with fish diet and enzymatic biomarkers

Annual variation of parasite communities of deep-sea macrourid fishes from the western Mediterranean Sea and their relationship with fish diet and histopathological alterations

“…In this way, N. aequalis and T. scabrus consumed prey more closely related to the seabed (benthopelagic and even benthic prey) Matallanas, 1989, 2002;present work), with lower similarity in their parasite communities compared to those of H. italicus that in turn preyed more on benthopelagic-swimming prey present work). This is also consistent with the results of Marcogliese (2002), Klimpel et al (2006) and Dallarés et al (2014) who point to higher parasite diversity and abundance in the near-bottom environment due to the higher availability of intermediate hosts in the benthos. Pelagic deep-sea fish mainly harbour, among others, larval stages of cestodes (Campbell et al, 1980); this is supported by the fact that larval Tetraphyllidea gen. sp.…”

Parasite communities of the deep-sea fish Alepocephalus rostratus Risso, 1820 in the Balearic Sea (NW Mediterranean) along the slope and relationships with enzymatic biomarkers and health indicators

“…This is an unexpected observation in contrast to the data observed in other species living at the same depth such as Mora moro (Dallarés et al, 2014), Phycis blennoides or Lepidion lepidion (unpublished data of the ANTROMARE project)…”

“…A. rostratus is not an exception since all fish analysed in this study had at least one parasite individual. However, its parasite richness is low compared with some other deep-sea demersal fishes such as macrourids and morids in the Atlantic Ocean and Mediterranean Sea (Campbell et al, 1980;Dallarés et al, 2014;Klimpel et al, 2006), A. rostratus exhibiting values more typical for meso-and bathypelagic fish hosts (around two to seven parasite species in bathypelagic fishes versus twenty in demersal fishes) (Klimpel et al, 2006(Klimpel et al, , 2010Marcogliese, 2002). In all likelihood, a specialised diet based on a narrow range of mobile macroplanktonic (even some benthic) organisms (Carrassón and Matallanas, 1998) could be the reason for the low parasite richness observed in A. rostratus.…”

“…Nevertheless, the knowledge about the interactions between parasites and environmental stress on general physiological biomarkers is limited (Dallarés et al, 2014;Marcogliese and Pietrock, 2011).…”

To what extent can specialized species succeed in the deep sea? The biology and trophic ecology of deep-sea spiny eels (Notacanthidae) in the Mediterranean Sea

“…LDH determination followed, Vassault (1983) protocol. A more detailed description is in Dallarés et al (2014). In both determinations, readings were carried out in triplicate in a microplate reader (TECANInfinte200) during 5 min at 25°C.…”