The Occurrence, Ecology and Life History of <i>Tigriopus fulvus</i> (Fischer)

Fraser, J. H.

doi:10.1017/s0025315400058100

Cited by 65 publications

(47 citation statements)

References 3 publications

(1 reference statement)

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“…However the nauplii of the Harpacticoida are relatively broad and more or less discoid (see Tesch, 1915;Gurney, 1930;Nicholls, 1935Nicholls, , 1941Fraser, 1936;Lang, 1948b;Johnson & Olson, 1948;Krishnaswamy, 1950Krishnaswamy, , 1955Bresciani, 1960;Ummerkutty, 1960;Bernard, 1963;El-Maghraby, 1964;Haq, 1965b;Vilela, 1969;Ito, 1970Ito, , 1975Carter & Bradford, 1972;Koga, 1973Koga, , 1984Hirakawa, 1974; (Izawa, 1986a) ld in N-1 at 16-l7°C (Izawa, 1986b) 5-6d to N-3 at 16°C (Izawa, 1986b) 15d to C-1 at 20°C (Costanzo, 1969) 1-2d in N-1 at 16-17°C (Izawa, 1986b) 4d to C-1 at 24-26°C (Izawa, 1986b) 2-3d to C-1 at 23-26°C (Ko, 1969;Ko et al, 1974) 1.5-2d to C-1 at 20°C (Nakamura et al, 1979;Do eta., 1984) 3d to C-1 at 24-25°C (Izawa, 1986b) 5d to C-1 at 18-24°C (Izawa, 1986b) 2d to C-1 at 20-22°C (Izawa, 1973) 5d to C-1 at 16-17°C (Izawa, 1975) 2-3d to C-1 at 23-24°C (Izawa, 1986b) 4-5d to C-1 at 16-17°C (Izawa, 1986b) unknown (Urawa et al, 1980a, b) !3d to N-6 at 18-20°C (Koga, 1984) unknown (Malt, 1982) 7-13d to C-1 at 18-20°C (Koga, 1984) 12d to C-1, WT unknown (Koga, 1984) 8-10d to C-a C-1 at 24-27°C …”

Section: -1 Morphological Featuresmentioning

confidence: 99%

“…In contrast to Longipedia, the corresponding part in Tisbe jurcata (Fig. 9D) is remarkably deformed, though the two elements are retained; the coxal spine is represented by a stout process in the first stage and develops in the later stages into a toothed strong process called "gnathobase", to which the other elements, a spine and an accessory small spine, are attached (see Fraser, 1936;Johnson & Olson, 1943;Krishnaswamy, 1955;Bresciani, 1960;Ummerkutty, 1960;El-Maghraby, 1964;Haq, l965b;Ito, 1970Ito, , 1975Ito & Takashio, 1931;Carter & Bradford, 1972;Schminke, 1932;Diaz & Evans, 1933;Bourguet, 1936). Such coxal armature with gnathobase as in Tisbe is common among other harpacticoids.…”

Section: -1-3 Second Antennamentioning

confidence: 99%

“…In most harpacticoids (Fig. 15B), the basis is deformed and has few spine (see Fraser, 1936;Nicholls, 1941;Johnson & Olson, 1948;Krishnaswamy, 1950Krishnaswamy, , 1955Bresciani, 1960;Ummerkutty, 1960;El-Maghraby, 1964;Haq, 1965b;Vilela, 1969;Carter & Bradford, 1972;It6, 1970It6, , 1975It6 & Takashio, 1981;Schminke, 1982). On the other hand, the basis is well-developed in Longipedia (Fig.…”

Section: -1-4 the Mandiblementioning

confidence: 99%

“…In the nauplii of most harpacticoids, the number of the mandibular exapodal segment is lesser than that of the generalized one. It varies with species from three to one (see Fraser, 1936;Nicholls, 1941;Lang, 1948b;Johnson & Olson, 1948;Krishnaswamy, 1950;Bresciani, 1960;Ummerkutty, 1960;El-Mahgraby, 1964;Haq, 1965b;Vilela, 1969;Carter & Bradford, 1972;Ito, 1970Ito, , 1975Ito & Takashio, 1981;Schminke, 1982;Diaz & Evans, 1983;Bourguet, 1986). Cyclopoids of Allantogynus delamarei (Nanaspididae) (Changeux, 1961), Choniosphaera cancrorum ( Choniostomatidae) (Connolly, 1929;Johnson, 195 7; Cancerilla tubulata ( Cancerillidae) (Carton, 1968) and Wilson's ( 1911) metanauplii of Ergasilus centrarchidarum are known to have five-segmented exopod.…”

Section: -1-4 the Mandiblementioning

confidence: 99%

“…This process of formation is the same as the generalized one in cyclopoids. However, the bilobular structures in the harpacticoids are not prominent when compared with the typical ones in the Cyclopoida (see Fraser, 1936;Lang, 1948b;Johnson & Olson, 1948;Ummerkutty, 1960;Vilela, 1969;Ito, 1970;Ito & Takashio, 1981;Carter & Bradford, 1972;Bourguet, 1986). In the nauplii of Longipedia, Microsetella> Sunaristes> and Canuella, the first maxilla appears in the first naup1ius stage as a seta or stout spine on the posterior portion of the body, it is later replaced by a bilobate structure in the fourth stage (see Gurney, 1930;Nicholls, 1935;Lang, 1948b;Hirakawa, 1974;Vincx & Heip, 1979;Diaz & Evans, 1983;Onbe, 1984).…”

Section: Taeniastrotos Pleuronichthydis Tegobomolochus Nasicola Dormentioning

confidence: 99%

See 4 more Smart Citations

Studies on the Phylogenetic Implications of Ontogenetic Features in the Poecilostome Nauplii (Copepoda : Cyclopoida)

Izawa¹

1987

Publ. SMBL

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Section: -1 Morphological Featuresmentioning

confidence: 99%

Section: -1-3 Second Antennamentioning

confidence: 99%

Section: -1-4 the Mandiblementioning

confidence: 99%

Section: -1-4 the Mandiblementioning

confidence: 99%

Section: Taeniastrotos Pleuronichthydis Tegobomolochus Nasicola Dormentioning

confidence: 99%

See 3 more Smart Citations

Studies on the Phylogenetic Implications of Ontogenetic Features in the Poecilostome Nauplii (Copepoda : Cyclopoida)

Izawa¹

1987

Publ. SMBL

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The minute brain of the copepod Tigriopus californicus supports a complex ancestral ground pattern of the tetraconate cerebral nervous systems

Andrew

Brown

Strausfeld

2012

J of Comparative Neurology

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Copepods are a diverse and ecologically crucial group of minute crustaceans that are relatively neglected in terms of studies on nervous system organization. Recently, morphological neural characters have helped clarify evolutionary relationships within Arthropoda, particularly among Tetraconata (i.e., crustaceans and hexapods), and indicate that copepods occupy an important phylogenetic position relating to both Malacostraca and Hexapoda. This taxon therefore provides the opportunity to evaluate those neural characters common to these two clades likely to be results of shared ancestry (homology) versus convergence (homoplasy). Here we present an anatomical characterization of the brain and central nervous system of the well-studied harpacticoid copepod species Tigriopus californicus. We show that this species is endowed with a complex brain possessing a central complex comprising a protocerebral bridge and central body. Deutocerebral glomeruli are supplied by the antennular nerves, and a lateral protocerebral olfactory neuropil corresponds to the malacostracan hemiellipsoid body. Glomeruli contain synaptic specializations comparable to the presynaptic "T-bars" typical of dipterous insects, including Drosophila melanogaster. Serotonin-like immunoreactivity pervades the brain and ventral nervous system, with distinctive deutocerebral distributions. The present observations suggest that a suite of morphological characters typifying the Tigriopus brain reflect a ground pattern organization of an ancestral Tetraconata, which possessed an elaborate and structurally differentiated nervous system.

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Density‐Dependent Metabolic Costs of Copper Exposure in a Coastal Copepod

Lode

Heuschele

Andersen

et al. 2021

Enviro Toxic and Chemistry

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Traditional ecotoxicology methods involving copepods have focused on exposure of pooled individuals and averaged responses, but there is increasing awareness of the importance of individual variation. Many biological traits are density-dependent, and decisions to use single-individual or pooled exposure may affect responses to anthropogenic stressors. We investigated how conspecific density as a biotic stressor affects behavioural and respiratory responses to copper (Cu) exposure in the coastal copepod Tigriopus brevicornis. Adults were incubated at densities of 1, 2 or 4 individuals per replicate in 3.2 mL exposure medium (23 µg Cu L -1 or control). Our results show an interaction of Cu exposure and density on respiration. Cu exposure increased respiration, This article is protected by copyright. All rights reserved. Accepted Articlebut this effect diminished with increasing density. We also found reduced swimming activity with increasing density. We propose two non-exclusive alternative explanations for the density-dependent respiratory increase of Cu exposure: 1) a behavioural stress response to low conspecific density, or 2) increased Cu exposure due to increased swimming activity. We emphasize the importance of considering density-dependency in responses when designing and interpreting ecotoxicology studies.

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The Occurrence, Ecology and Life History of Tigriopus fulvus (Fischer)

Cited by 65 publications

References 3 publications

Studies on the Phylogenetic Implications of Ontogenetic Features in the Poecilostome Nauplii (Copepoda : Cyclopoida)

Studies on the Phylogenetic Implications of Ontogenetic Features in the Poecilostome Nauplii (Copepoda : Cyclopoida)

The minute brain of the copepod Tigriopus californicus supports a complex ancestral ground pattern of the tetraconate cerebral nervous systems

Density‐Dependent Metabolic Costs of Copper Exposure in a Coastal Copepod

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