http://www.cnr.it/ontology/cnr/individuo/prodotto/ID6474
Nanism (dwarfism) in fish: a comparison between red mullet Mullus barbatus from the southeastern and the central Mediterranean. (Articolo in rivista)
- Type
- Label
- Nanism (dwarfism) in fish: a comparison between red mullet Mullus barbatus from the southeastern and the central Mediterranean. (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.3354/meps06917 (literal)
- Alternative label
Sonin O., Spanier E., Levi D., Patti B., Rizzo P., Andreoli M.G. (2007)
Nanism (dwarfism) in fish: a comparison between red mullet Mullus barbatus from the southeastern and the central Mediterranean.
in Marine ecology. Progress series (Halstenbek); Inter-Research, Oldendorf Luhe (Germania)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Sonin O., Spanier E., Levi D., Patti B., Rizzo P., Andreoli M.G. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.int-res.com/abstracts/meps/v343/p221-228/ (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- Scopu (literal)
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- IAMC-CNR U.O. DI MAZARA DEL VALLO (ITALY)
DEPART. OF FISH. AND AQUACULTURE - (ISRAELE) (literal)
- Titolo
- Nanism (dwarfism) in fish: a comparison between red mullet Mullus barbatus from the southeastern and the central Mediterranean. (literal)
- Abstract
- The gradient of environmental conditions from west to east in the Mediterranean results
in very low primary productivity in the eastern area of this sea. This impoverishment is expressed also
in higher trophic levels and has been accounted for by several faunistic phenomena. One of these is
'Levantine nanism' (dwarfism); this is characterized by smaller body size of specimens in the Levantine
basin compared with conspecifics in the western Mediterranean. Nanism has been hypothesized for
various taxonomic groups in the Mediterranean, but no quantitative study has yet been carried out to
confirm it. In the present study male and female red mullet Mullus barbatus from trawl surveys carried
out along the Mediterranean coast of Israel and the Strait of Sicily were sampled. Each fish was sexed,
measured for total length (TL) and aged by otolith readings. ANCOVA analyses indicated that the TL
of both males and females from Israel was significantly smaller at increasing ages than conspecifics of
the same age and sex from Sicily. In addition, preliminary examination of sexual maturity of M. barbatus
of both sexes indicated that the Israeli fish sexually mature at a smaller size than conspecifics of the
same sex from Sicily. These findings can be explained by low productivity in the Levantine basin compared
with the western Mediterranean. The low and unpredictable food supply in the southeastern
Mediterranean may result in a form of r-strategy of the marginal eastern populations of this species
that leads to early reproduction and smaller body size. The average higher water temperature may
also partly explain Levantine nanism, as it may cause more intensive metabolic processes in the southeastern
population, resulting in earlier sexual maturity and cessation of growth. (literal)
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