Reproductive biology of three gadiform fish species through the Mediterranean deep-sea range (147-1850 m)

Rotllant, Guiomar; Moranta, Joan; Massutí, Enric; Sardà, Francisco; Morales‐Nin, Beatriz

doi:10.3989/scimar.2002.66n2157

Cited by 42 publications

(29 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dominance of species and their relative size show differences depending of the depth range considered. For instance, below 800 m the larger sizes are found from the species that are characterized by a bigger-deeper trend such as Phycis blennoides (Massutí et al, 1996), Trachyrhynchus trachyrhynchus (Massutí et al, 1995), Lepidion lepidion and Mora moro (Rotlland et al, 2002). Moreover, Alepocephalus rostratus, a dominant fish in the deep communities which exhibits a clear bathymetric segregation of sizes , has a high mean individual weight which determines most of the biomass trends at this depth.…”

Section: Discussionmentioning

confidence: 99%

Size Influence in Zonation Patterns in Fishes and Crustaceans from Deep-water Communities of the Western Mediterranean

Morales‐Nin¹,

Maynou²,

Sardà³

et al. 2003

J. Northw. Atl. Fish. Sci.

View full text Add to dashboard Cite

Information was collected over two seasons on the depth distribution of the deep-water fishes and decapod crustaceans to the southwest of the Balearic Islands. The data were analysed to compare the intensity of faunal change with depth to individual size, measured as mean individual weight, both within and between fish and decapods. The results are discussed on the light of the biological characteristics of the populations studied. We conclude that there are complex distributions of mean weight by depth, determined mainly by trophic aspects and biological adaptations to the oligotrophic environment of the deep Mediterranean.

show abstract

Section: Discussionmentioning

confidence: 99%

Size Influence in Zonation Patterns in Fishes and Crustaceans from Deep-water Communities of the Western Mediterranean

Morales‐Nin¹,

Maynou²,

Sardà³

et al. 2003

J. Northw. Atl. Fish. Sci.

View full text Add to dashboard Cite

show abstract

“…Accordingly, these species have adapted to the environmental conditions of the depths by lengthening their spawning periods, in as much as the impact of seasonal fluxes is lessened at these depths. Since it is no longer necessary to synchronize gonadal development with seasonal energy inputs, spawning can take place quasi-continuously, or a single resting period in the summer suffices (Rotllant et al 2002).…”

Section: Life Cyclesmentioning

confidence: 99%

Biological patterns and ecological indicators for Mediterranean fish and crustaceans below 1,000 m: a review

Sardà

Rotllant

Coll

2009

Rev Fish Biol Fisheries

View full text Add to dashboard Cite

The Mediterranean Sea is a relatively deep, closed sea with high rates of fisheries exploitation. In recent years fishing activity has tended to shift towards deeper depths. At the same time, the Mediterranean displays some rather special hydrographic and biogeographic conditions. The present paper reviews the present state of knowledge of the fisheries, biology, and ecology of the deep-sea fish and crustacean species in the Mediterranean dwelling below 1,000 m with potential economic interest, placing special emphasis on the western basin, for which more data are available, as a basis for future studies of the ecology, biodiversity, and effects of climate change and exploitation in this zone. This review reveals that mediterranean deep-sea fishes and crustaceans employ highly conservative ecological strategies, and hence the low fecundity and low metabolic rates in a stable environment like the deepsea make these populations highly vulnerable.Moreover, ripe females of the main species mentioned here concentrate in the deepest portions of their distribution ranges. Deep-sea fish and crustaceans have high trophic levels and low to medium omnivory index values. The ecological indices discussed here, in combination with the limited knowledge of deep-sea ecosystems, clearly call for an approach based on the Precautionary Principle.

show abstract

“…(Table 3) is well known (e.g, Valero et al 2005). In particular, the Mediterranean Sea is physically fairly constant: isothermal below 200 m (13°C), with high salinity, low oxygen and oligotrophy (Rotllant et al 2002). Despite this constancy, the parasitic fauna in Mediterranean deep-sea teleost species fish is still controversial.…”

Section: Discussionmentioning

confidence: 98%

Anisakid parasites of two forkbeards (Phycis blennoides and Phycis phycis) from the eastern Mediterranean coasts in Tunisia

et al. 2006

View full text Add to dashboard Cite

Two gadiform species with a successive bathymetric and an ecological and economical importance in the Mediterranean fishing industry, Phycis blennoides and Phycis phycis, were selected for the present study. A total of 592 fresh specimens belonging to the Gadiformes genus were obtained from local commercial fisheries. The investigation was centred on anisakid parasites of 272 specimens of the greater forkbeard (P. blennoides) and 320 of the forkbeard (P. phycis) captured off the Mediterranean coasts of Tunisia (eastern Mediterranean Sea). Four species of nematodes were identified: Anisakis simplex s.1., Anisakis physeteris, Hysterothylacium aduncum and Hysterothylacium fabri. The total prevalence was 53.75% in the forkbeard and 51.47% in the greater forkbeard. The highest values of prevalence (38.75%, 2-14), mean intensity (6.74+/-3.4) and mean abundance (2.61) were all obtained for H. fabri L4 in the forkbeard. The most frequent parasite in the greater forkbeard was H. aduncum L3 with 32.35% (1-3) prevalence and values of 1.21+/-0.58 and 0.39 for mean intensity and mean abundance, respectively. The infestation parameters were also analysed according to the host length, and prevalence was highest in P. blennoides longer than 35 cm in respect of all anisakid species. Whilst in P. phycis, the highest prevalence, conditioned by H. fabri parasitisation, was found in fish with length reaching a maximum of more than 40 cm. When the data were grouped seasonally, clear patterns were observed for P. blennoides and P. phycis species, with prevalence and mean intensity of all the anisakid species peaking in spring and summer.

show abstract

Reproductive biology of three gadiform fish species through the Mediterranean deep-sea range (147-1850 m)

Cited by 42 publications

References 36 publications

Size Influence in Zonation Patterns in Fishes and Crustaceans from Deep-water Communities of the Western Mediterranean

Size Influence in Zonation Patterns in Fishes and Crustaceans from Deep-water Communities of the Western Mediterranean

Biological patterns and ecological indicators for Mediterranean fish and crustaceans below 1,000 m: a review

Anisakid parasites of two forkbeards (Phycis blennoides and Phycis phycis) from the eastern Mediterranean coasts in Tunisia

Contact Info

Product

Resources

About