OSTEOLOGIA DE SCIADES COUMA VALENCIENNES, 1864 (OSTEICHTHYES, SILURIFORMES; ARIIDAE)
نویسندگان
چکیده
منابع مشابه
Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, northern Brazil.
The feeding ecology of pemecou sea catfish (Sciades herzbergii) was studied bimonthly from September 2003 to July 2004 in a macrotidal mangrove creek at Curuçá estuary, Brazil. Feeding activity and relative importance of prey groups were assessed in 528 and 226 specimens (6.2 to 36.0 cm total length), respectively, using stomach contents. A total of 1 820 specimens were caught. The fish left th...
متن کاملTrophic ecomorphology of Siluriformes (Pisces, Osteichthyes) from a tropical stream.
The present study analysed the relationship between morphology and trophic structure of Siluriformes (Pisces, Osteichthyes) from the Caracu Stream (22º 45' S and 53º 15' W), a tributary of the Paraná River (Brazil). Sampling was carried out at three sites using electrofishing, and two species of Loricariidae and four of Heptapteridae were obtained. A cluster analysis revealed the presence of th...
متن کاملStructure and Possible Functions of Constant-Frequency Calls in Ariopsis seemanni (Osteichthyes, Ariidae)
In the 1970s, Tavolga conducted a series of experiments in which he found behavioral evidence that the vocalizations of the catfish species Ariopsis felis may play a role in a coarse form of echolocation. Based on his findings, he postulated a similar function for the calls of closely related catfish species. Here, we describe the physical characteristics of the predominant call-type of Ariopsi...
متن کاملLight and electron microscopy of Myxobolus sciades n. sp. (Myxozoa), a parasite of the gills of the Brazilian fish Sciades herzbergii (Block, 1794) (Teleostei: Ariidae).
A myxosporean parasite in the gill lamellae of the freshwater teleost fish, Sciades herzbergii (Ariidae) (Block, 1794), from the Poti River (Northeast of Brazil) was described by light and electron microscopy studies. Polysporic histozoic cyst-like plasmodia containing several life-cycle stages, including mature spores, were observed. The spores were pyriform and uninucleate, measuring 9.15 +/-...
متن کاملChanges in growth seasonality throughout Netuma barba (Lacépède, 1803) (Siluriformes, Ariidae) Ontogeny.
The somatic and populational growth of living organisms is affected directly and indirectly by the environment (Nikolskii, 1969; Weatherley, 1972; Pauly, 1984; Margalef, 1995). A direct effect is metabolism change (much more apparent in ectotherm organisms); indirect effects include variable food availability and differing vulnerability to predation since temperature and other physical variable...
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ژورنال
عنوان ژورنال: The Biologist
سال: 2020
ISSN: 1994-9073,1816-0719
DOI: 10.24039/rtb2020181446