Results 121 to 130 of about 329 (162)

Hæmoglobin in Branchiura

Nature, 1957
HAEMOGLOBIN dissolved in the blood plasma has been recorded in all the major divisions of entomostracan Crustacea except one1. This respiratory blood pigment has been found in all species of Phyllopoda examined, in most Cladocera, in a few Ostracoda, in some harpacticid and parasitic Copepoda and in some Rhizocephala, but not hitherto in the Branchiura.
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The occurrence of Argulus (Crustacea: Branchiura) in Scotland

Journal of Fish Biology, 1971
Records of the distribution of the genus Argulus in Scotland are given. The occurrence of A. coregoni Thorell in the River Clyde is confirmed.
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A redescription of Dolops ranarum (Stuhlmann, 1891) (Crustacea: Branchiura)

Systematic Parasitology, 1989
The branchiuran ectoparasite Dolops ranarum (Stuhlmann, 1891) was described almost one hundred years ago. This descriptional though valid is incomplete. A redescription is given. New information was obtained with light and scanning electron microscopy. Morphometric values are included and a species diagnosis is presented.
Annemarié Avenant, G. C. Loots, J. G. Van As   +2 more
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Occurrence of Spermatophores in the Genus Dolops (Crustacea: Branchiura)

Nature, 1958
ACCORDING to all those who have defined the group, one of the diagnostic characteristics of the Branchiura is the absence of spermatophores. Indeed, the mating habits of members of the genus Argulus are sufficiently well known to enable it to be stated that here no such structures are involved in sperm transfer, and recent unpublished observations on ...
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A Rational Look at Parasitic Copepoda and Branchiura

1976
According to the type of their host-parasite relationship, parasitic copepods of fishes can be divided into three categories: ectoparasites, mesoparasites and endoparasites. Many ectoparasites and all mesoparasites are very injurious but the endoparasites appear to be relatively harmless.
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Structure of the adult ovary and oogenesis inArgulus japonicus thiele (Crustacea: Branchiura)

Journal of Morphology, 1997
The adult ovary of the branchiuran Argulus japonicus is a single, median, long sac-like organ located in the thorax above the alimentary canal. A long germarium, including oogonia, very early previtellogenic oocytes, and young somatic cells (interstitial cells), is embedded in the dorsal ovarian wall along the median longitudinal line of the ovary. The
Kyosuke, Ikuta, Toshiki, Makioka
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The Ultrastructure of the Newly Hatched Argulus Japonicus Thiele, 1900 Larvae (Branchiura)

Crustaceana, 1995
Abstract Fcrtilized Argulus japonicus Thiele, 1900, eggs were hatched in the laboratory. The morphology of the first developmental stage was studied by means of scanning electron microscopy and light microscopy. The surface topography of the carapace and appendages are described.
Edie Lutsch, Annemariè Avenant-Oldewage
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Three actinosporean types (Myxozoa) from the oligochaete Branchiura sowerbyi in China

Parasitology Research, 2013
Three actinosporean types--raabeia, aurantiactinomyxon, and guyenotia--from the oligochaete Branchiura sowerbyi Beddard collected from a crucian carp (Carassius auratus gibelio) pond are described in this report. Compared with the actinospores described previously, the raabeia type presents similar spore shape with the actinospore of Myxobolus cultus ...
Bing-Wen, Xi, Jin-Yong, Zhang, Jun, Xie, Liang-Kun, Pan, Pao, Xu, Xian-Ping, Ge   +5 more
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Life-cycle and karyology of Branchiura sowerbyi Beddard (Oligochaeta, Tubificidae)

Hydrobiologia, 1984
Data on the life-cycle of a population of Branchiura sowerbyi Beddard in a water-lily tank at the Botanical Garden in Padua are reported. The breeding period is from April to July, after which the reproductive system is partially resorbed (August-September) and reformed later in the autumn. The karyology of the species was also studied, and revealed 38
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Comments on the morphology of the pre‐oral spine in Argulus (Crustacea: Branchiura)

Journal of Morphology, 1992
AbstractA histological study of the pre‐oral spine and associated structures in Argulus japonicus reveals that two exceptionally long and slender muscles casuse retraction of the spine into the spinal sheath. Originating from the body wall mid‐dorsally the two muscles proceed through the nerve ring and the blood‐filled lumen of the spinal sheath before
J H, Swanepoel, Annemarie, Avenant-Oldewage   +1 more
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