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Showing 1 to 20 of 40 for “"Copepoda"”.
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Feeding of Naupliar and Adult Carnivorous Cyclopoids (Crustacea : Copepoda)
The problem. Little is known about the feeding of naupliar cyclopold copepods, though they are often abundant in the zooplankton.The objective of the current study is to compare feeding of naupliar and adult cyclopoids by testing them on prey types they commonly encounter. Procedure. In-laboratory …
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Revisión del género Asterocheres Boeck 1860 (copepoda, siphonostomatoida, asterocheridae)
… es uno de los nueve órdenes de la subclase Copepoda, y el único que incluye especies exclusivamente asociadas o parásitas de otros metazoos. La autapomorfía que define a este orden es la presencia de una mandíbula con estilete típicamente contenido en un cono oral o sifón. La familia con …
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Taxonomia de Asterocheridae (Copepoda: Siphonostomatoida) associado a esponjas do litoral brasileiro
The Brazilian coast has the Siphonostomatoid species that parazitise fishes relatively well known, however there are no records of the Siphonostomatoid species that live associated with invertebrates. Thus, sampling was clone in three diferent areas of the Brazilian coast: Cagarras Islands, Rio de …
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Distribuição espaço-temporal da classe Copepoda na Baía de Guanabara, RJ, Brasil
This study presents the space-time of the Class Copepoda for Guanabara Bay from March 1998 to November 1999. Bimonthly, surface horizontal net hauls were carried out at 8 sites, using a conic-cylindrical net of 200μm mesh size. Vertical tows at Guanabara Bay entrance site were done to complement …
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Taxonomia e distribuição geográfica dos Monstrilloida (Copepoda - Crustacea) do Atlântico sul ocidental
Taxonomic and ecological works of the group are limited by the rarity of specimens which are captured by plankton nets as adults only. Most stages are highly modified internai parasites of benthic polychaetes and molluscs. The material examined was collected during zooplankton surveys in neritic …
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Population Dynamics of Copepoda and Cladocera in an Iowa farm pond, Summer 1973
The problem. To calculate rates for birth, death, and natural increase of zooplankton found in an unpolluted artificial pond. This will serve as a basis for comparisons with other bodies of water to show man's effect upon one of the most basic of all ecosystems. Procedure. Water samples were …
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Spatial Distribution of Planktonic Copepoda and Cladocera in Red Rock Reservoir, Iowa, Summer, 1972
… The measurement of spatial distribution of Copepoda and Cladocera in Red Rock Reservoir, Iowa, summer, 1972, was undertaken. Water temperature, Secchi disk, and total water depth readings were also measured. Procedure. Volumetric samples of free-swimming zooplankton were collected at weekly …
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Impiego di Ciclopoidi (Crustacea, Copepoda) come agenti di lotta biologica contro le zanzare (Diptera, Culicidae)
Da 25 anni la letteratura scientifica internazionale riporta studi su varie specie di microcrostacei copepodi ciclopoidi dei generi Macrocyclops, Megacyclops e Mesocyclops predatori di larve di 1a e 2a età di culicidi. Si tratta di prove di predazione in laboratorio e in pieno campo, in diverse …
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O zooplâncton da laguna hipersalina de Araruama (RJ) com ênfase na biologia de Oithona oswaldocruzi Oliveira, 1945 (Cyclopoida, Copepoda)
The Araruama Lagoon, located in the state of Rio de Janeiro, measuring 220 Km2, has a great ecological and socio-economic importance. It is the largest permanent hypersaline lagoon in the world. Its constant hypersalinity can be explained by its narrow communication with the ocean, its shallowness, …
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Early Life History of Yellow Perch in Eastern South Dakota Lakes
… The first food of larvae in Pickerel Lake was Copepoda nauplii, with fish switching to adult Copepoda by 7 mm total length (TL), and then to Cladocera and large calanoid Copepoda by 14-mm TL. However, in 1995, Copepoda nauplii density was extremely low and larvae began feeding on adult Copepoda …
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Ecologia do zooplâncton do reservatório de Tapacurá, Pernambuco-Brasil
… os períodos sazonais. Rotifera, Cladocera e Copepoda foram os grupos mais freqüentes e abundantes. Entre o Rotifera, cinco espécies constituem novas ocorrências para ecossistemas continentais do estado de Pernambuco. A região litorânea revelou maior riqueza de espécies, diversidade e …
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Untersuchungen zum Abbau partikulärer organischer Substanzen in einem Langsamsandfilter durch Metazoen am Beispiel von Niphargus fontanus
… fontanus (Amphipoda) und Chappuisius inopinus (Copepoda) gefressen werden. Diacyclops languidoides (Copepoda) und Bythiospeum septentrionale (Gastropoda) bevorzugten Detritus. Niphargus fontanus konsumierte zwischen 13,2 und 18,1 myg*d-1 TG. Die Darmpassagezeiten betrugen 2-6 Tage. Die Kotballen …
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Estudo de plâncton, particularmente da bioecologia de Temora stylifera (Dana, 1849) (Copepoda, Calanoida) Rio de Janeiro - RJ: emissário submarino de Ipanema e Baía de Guanabara
… the ecobiology of Temora stylifera (Dana, 1849) Copepoda Calanoida, Temoridae family, of the coast of Rio de Janeiro (RJ), Submarine Sewage of Ipanema and Guanabara Bay We make a morphological description of Temora stylifera in its adult stage and in the nauplius and copepodit stages. We study as …
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A preliminary study of genetic variation within and among populations of Diaptomus leptopus (Copepoda: Calanoida) : a DNA sequence analysis of the Mitochondrial Cytochrome Oxidase I gene
Previous studies examining the population structure of aquatic organisms have been based generally on behavioral traits, morphological traits and allozyme studies. DNA sequence analysis of the mitochondrial cytochrome oxidase I gene may also be of use to study population structure. Thus, a study …
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Ectoparasites of the southern mullet Liza Richardsonii in the Berg Estuary, South Africa
… were found. These included five species of Copepoda; a member of the family Caligidae, an Ergasilus species, a Dermoergasilus species, a Brachiella species and an unidentified caudal fin parasite. Two representatives of the Monogenea were found, one from the family Microcotylidae and another …
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