scholarly journals Two new nematode species of the genus Cosmocephalus Molin, 1858 (Spirurida: Acuariidae), with an amended generic diagnosis and an identification key to Cosmocephalus spp.

Zootaxa ◽  
2010 ◽  
Vol 2349 (1) ◽  
pp. 1 ◽  
Author(s):  
YASEN MUTAFCHIEV ◽  
ALI HALAJIAN ◽  
BOYKO B. GEORGIEV
Keyword(s):  
Nematode Species ◽  
Identification Key ◽  
Generic Diagnosis ◽  
Phalacrocorax Carbo ◽  
Comprehensive Information ◽  
Black Sea Coast ◽  
Species Inquirenda ◽  
Podiceps Cristatus ◽  
New Geographical Record ◽  
Caudal Bursa

Cosmocephalus podicipis n. sp. is described from Podiceps cristatus from the vicinity of Ramsar, Iran (type host and type locality) and from Podiceps nigricollis from the Bulgarian Black Sea coast. Cosmocephalus pelecani n. sp. is described from Pelecanus conspicillatus from Mansfield, Victoria, Australia. Comparative materials of three other species of Cosmocephalus were examined and described. These are C. obvelatus (based on specimens from Larus argentatus from Bulgaria), C. jaenschi (based on a paratype from Phalacrocorax carbo from Australia) and C. capellae (based on a male nematode from Tringa totanus from Bulgaria, a new geographical record). Cosmocephalus faridi from Pelecanus onocrotalus from Egypt, which has been considered by previous authors as a synonym of C. obvelatus, is validated. Results of SEM observations are presented for C. podicipis and C. obvelatus. In all the species examined, the presence of a single ventral ridge was recorded in males anterior to the caudal bursa. The generic diagnosis is amended to include more comprehensive information on the morphology of the studied species. Currently, the genus Cosmocephalus includes 7 species. Cosmocephalus imperialis is recognised as a species inquirenda. Cosmocephalus argentinensis is proposed as a junior synonym of C. obvelatus. An identification key to the species of Cosmocephalus is presented.

scholarly journals Flock-fishing deep-diving piscivores (Great Crested Grebe Podiceps cristatus, Great Cormorant Phalacrocorax carbo, Common Merganser Mergus merganser) at Lake Vombsjön, southern Sweden, and those that exploit them

Ornis Svecica ◽  
2018 ◽  
Vol 28 (1) ◽  
Author(s):  
Hans Källander
Keyword(s):  
Great Cormorant ◽  
Southern Sweden ◽  
Phalacrocorax Carbo ◽  
Herring Gulls ◽  
Deep Diving ◽  
Large Numbers ◽  
Ardea Cinerea ◽  
Mergus Merganser ◽  
Podiceps Cristatus ◽  
Great Cormorants

Lake Vombsjön in southern Sweden is visited by large numbers of Great Crested Grebes Podiceps cristatus (>2000), Great Cormorants Phalacrocorax carbo (sometimes >1000) and Common Mergansers Mergus merganser (up to 2000) in late autumn and early winter. Different species exploit them. Great Crested Grebes are used especially by commensal Common Gulls Larus canus; the gulls take advantage of fish that flee towards the surface. Common Gulls also use cormorants and mergansers in the same way but also try to kleptoparasitize them. Both Herring Gulls Larus argentatus and Great Black-backed Gulls Larus marinus kleptoparasitize these two species, while Red Kites Milvus milvus, Grey Herons Ardea cinerea and Carrion Crows Corvus corone use them commensally. White-tailed Eagles Haliaeetus albicilla seem to use both methods to obtain fish. On 50% of one hundred visits during November to March, eagles were seen flying low over the fishing flocks. They would fly a metre or so above the flocks and then accelerate and attack a bird holding a fish. The bird would then either try to escape by a rush or by diving, dropping the fish which the eagle seized. Interestingly, the flock-fishing birds showed no fear reactions towards the eagles but appeared to regard them similarly to large gulls.

scholarly journals Nematodes of Cithariniella (Pharyngodonidae) from freshwater fishes in Senegal, with a key to species

2010 ◽  
Vol 47 (2) ◽  
pp. 105-114 ◽  
Author(s):  
B. Koubková ◽  
V. Baruš ◽  
I. Hodová
Keyword(s):  
Species Differences ◽  
Morphological Characteristics ◽  
Host Record ◽  
Nematode Species ◽  
Generic Diagnosis ◽  
Key To Species ◽  
New Host ◽  
Oral Aperture ◽  
New Host Record ◽  
First Time

AbstractThree nematode species of Cithariniella (Pharyngodonidae), C. citharini, C. khalili, and C. gonzalesi, were recorded from the recta of squeaker (Mochokidae: Siluriformes) and citharinid (Citharinidae: Characiformes) fishes from Senegal, West Africa. Morphological characteristics obtained by scanning electron microscopy (form of oral aperture and cephalic papillae, presence of lateral alae, distribution and form of cloacal papillae, simple or paired papillae on tail of males, eggs with numerous long filaments on each pole in females) correspond well to the generic diagnosis and represent species differences. The shape and size of the cephalic papillae and lips were identified as a new determination feature. C. gonzalesi is reported for the first time from Senegal and its host, Paradistichodus dimidiatus, represents a new host record. A tentative simple key for differentiating C. citharini, C. khalili, C. gonzalesi and C. petterae is provided based upon these results.

scholarly journals Determination of total mercury in muscle, intestines, liver and kidney tissues of cormorant (Phalacrocorax carbo), great crested grebe (Podiceps cristatus) and Eurasian buzzard (Buteo buteo)

2012 ◽  
Vol 50 (No. 2) ◽  
pp. 61-68 ◽  
Author(s):  
P. Houserova ◽  
J. Hedbavny ◽  
D. Matejicek ◽  
S. Kracmar ◽  
J. Sitko ◽  
...  
Keyword(s):  
Mercury Concentration ◽  
Total Mercury ◽  
Adult Population ◽  
The United States ◽  
Phalacrocorax Carbo ◽  
Buteo Buteo ◽  
Carson River ◽  
Liver And Kidney ◽  
Podiceps Cristatus ◽  
Great Crested Grebe

The total mercury concentrations in four tissues (muscle, intestines, liver and kidney) of aquatic birds (cormorant – Phalacrocorax carbo and great crested grebe – Podiceps cristatus) and Eurasian buzzard (Buteo buteo) were determined by cold vapour atomic absorption spectrometry (CV-AAS) using an Advanced Mercury Analyser AMA 254. The results of the direct CV-AAS analyses of homogenised solid samples were in very good agreement with those obtained by CV-AFS and CV-AAS analyses after acid digestion. Mercury concentrations in the tested tissues of adult populations of great crested grebe and cormorant were nearly twice as high as in the Eurasian buzzard. Significantly higher mercury concentrations were found in the liver and kidney of the cormorant (7-times and 2-times, respectively) compared to great crested grebe. The highest mercury concentration (39.2 mg/kg DM) was found in liver of adult population of cormorant while the content of mercury in younger cormorants was approx. 6-times lower (5.8 mg/kg DM). The total mercury concentration in liver was 6-times higher (2–3-times in muscle and kidney) but 13-times lower then those of the cormorant population living in Japan (Tokyo, Lake Biwa) and in the United States (Nevada, Carson River), respectively.

scholarly journals Status of pelicans and cormorants on the northern Black Sea

2005 ◽  
Vol 15 (1) ◽  
pp. 63-71 ◽  
Author(s):  
I. SCHOGOLEV ◽  
A. RUDENKO ◽  
A.J. CRIVELLI
Keyword(s):  
Black Sea ◽  
Coastal Wetlands ◽  
Great Cormorant ◽  
Danube Delta ◽  
Phalacrocorax Carbo ◽  
Crimean Peninsula ◽  
Black Sea Coast ◽  
The Status ◽  
Sea Coast ◽  
The Crimean Peninsula

The status of breeding pelicans and cormorants is assessed in the area from the Danube delta (Romania) to the northern part of the Crimean peninsula. Four breeding species occur in inland and coastal wetlands: Dalmatian Pelican Pelecanus crispus, Great White Pelican Pelecanus onocrotalus, Great Cormorant Phalacrocorax carbo and Pygmy Cormorant Phalacrocorax pygmeus. Data on clutch size and breeding success are given. Historically, all four species were restricted to the Danube delta. Currently, with the exception of Dalmatian Pelican, they all breed successfully on the eastern Black Sea coast in the Ukraine. There are many conservation problems that will jeopardize the breeding of these species in the future if nothing is done.

A review of Pseudoleptomesochrella Lang, 1965 (Copepoda, Harpacticoida, Ameiridae), including a redescription of P. halophila (Noodt, 1952) from the Black Sea and a key to species

Zootaxa ◽  
2008 ◽  
Vol 1758 (1) ◽  
pp. 45 ◽  
Author(s):  
SERDAR SAK ◽  
SÜPHAN KARAYTUĞ ◽  
RONY HUYS
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Key To Species ◽  
Dichotomous Key ◽  
Species Complexes ◽  
As Species ◽  
Black Sea Coast ◽  
Species Inquirenda ◽  
Careful Comparison ◽  
Sea Coast

Both sexes of Pseudoleptomesochrella halophila (Noodt, 1952) (Copepoda, Harpacticoida, Ameiridae) are redescribed in detail based on material collected from the Black Sea coast of Turkey. Careful comparison revealed that the Turkish specimens are identical with the northwestern European populations originally reported from the Isle of Sylt (Germany) and the Isles of Scilly (U.K.). Re-examination of the type material of Nitocrella halophila brevifurca Wells, 1961 confirmed its conspecificity with P. halophila. Comparison of the various descriptions indicates the genus comprises two species complexes (Atlantic and P. halophila groups) whose members exhibit only cryptic differences, and that the majority of discrepancies reported in the literature are potentially unreal. Pseudoleptomesochrella pontica Apostolov, 1969 is removed from its synonymy with P. halophila and is reinstated as species inquirenda. A dichotomous key to species of Pseudoleptomesochrella Lang, 1965 is provided.

The genus Rhinoglena (Rotifera, Monogononta, Ephiphanidae) in North America, with the description of two new species

Zootaxa ◽  
2017 ◽  
Vol 4290 (1) ◽  
pp. 113 ◽  
Author(s):  
HENDRIK SEGERS ◽  
ELIZABETH J. WALSH
Keyword(s):  
New Species ◽  
North America ◽  
Literature Review ◽  
Chihuahuan Desert ◽  
Identification Key ◽  
Close Relative ◽  
Generic Diagnosis ◽  
Aquatic Habitats ◽  
Two New Species ◽  
The Usa

Based on material from aquatic habitats in the northern Chihuahuan Desert and a literature review, we present an account on the occurrence of genus Rhinoglena in North America. Two new species are described, and the presence of Rhinoglena frontalis in the USA is confirmed. Of the two new species, R. texana n. sp. is a close relative of R. frontalis, whereas R. ovigera n. sp. is unique by being oviparous, in contrast to all other Rhinoglena which are viviparous. This prompts a revision of the generic diagnosis of Rhinoglena to accommodate the new species. An identification key to the known species of the genus is provided. 

Description of five new species ofHeliuraButler (Lepidoptera: Erebidae: Arctiinae: Arctiini: Ctenuchina), with discussion onH. pierus(Cramer) and theH. stolli(Rothschild) species group

2016 ◽  
Vol 148 (4) ◽  
pp. 396-415 ◽  
Author(s):  
Lívia R. Pinheiro ◽  
Jean-Aimé Cerda ◽  
Marcelo Duarte
Keyword(s):  
New Species ◽  
Species Group ◽  
Identification Key ◽  
The Other ◽  
New Combination ◽  
Species Inquirenda ◽  
First Time

AbstractFivenew speciesofHeliuraButler (Lepidoptera: Erebidae) are described:H. laguerreiPinheiro and Cerda,H. beneluziPinheiro and Cerda,Heliura crameriPinheiro and Cerda,H. nigriventrisPinheiro and Duarte, andH. pauloiPinheiro and Duarte. The last three species are placed in theH. stolli(Rothschild) species group, which is delimited for the first time and discussed. The other known species that are also part of this group are redescribed, and an identification key is provided.Heliura pieroidesRothschild is a revalidated combination.Heliura parcipunctais a new combination.Heliura pierusCramer is considered aspecies inquirenda. Illustrations of habitus and genitalia of the species treated herein are provided whenever possible.

scholarly journals Contribution to the knowledge of the oribatid mite genus Perxylobates (Acari, Oribatida, Haplozetidae)

Acarologia ◽  
2020 ◽  
Vol 60 (3) ◽  
pp. 612-621
Author(s):  
Sergey G. Ermilov ◽  
Jhih-Rong Liao
Keyword(s):  
New Species ◽  
Agricultural Research ◽  
Ricinus Communis ◽  
Anterior Part ◽  
Oribatid Mite ◽  
Identification Key ◽  
Generic Diagnosis ◽  
Taxonomic Proposal ◽  
Mite Genus

Perxylobates hakkai n. sp. (Oribatida, Haplozetidae) is the second representative of the genus recorded in Taiwan; it is described based on adults from soil under Ricinus communis on a farm of the Agricultural Research and Extension Station in Miaoli District. The new species differs from related Perxylobates coreanus Choi and Aoki, 1993 by the presence of five pairs of genital setae (versus four pairs), four pairs of notogastral porose areas including A3 (versus three pairs, A3 absent), minute epimeral seta 1c (versus comparatively long), roughened epimeral and aggenital setae (versus heavily barbed), and smooth anterior part of prodorsum (versus foveolate). A revised generic diagnosis and an identification key to known species of Perxylobates are provided. The systematic placement of Perxylobates mahunkai Bayoumi, 1980 is discussed, resulting in the following new taxonomic proposal: Protoribates mahunkai (Bayoumi, 1980) n. comb.

Contribution to the knowledge of the oribatid mite genus Antarctozetes (Acari, Oribatida, Punctoribatidae) 

2019 ◽  
Vol 24 (1) ◽  
pp. 81
Author(s):  
Sergey G. Ermilov ◽  
Maria Minor ◽  
Valerir Behan-Pelletier
Keyword(s):  
New Species ◽  
New Zealand ◽  
Oribatid Mite ◽  
Identification Key ◽  
Generic Diagnosis ◽  
Adult Morphology ◽  
Relationship Of ◽  
The Relationship ◽  
A New Species ◽  
Mite Genus

A new species of Antarctozetes (Oribatida, Ceratozetoidea) is described from the soil in New Zealand based on adult morphology. Antarctozetes mariehammerae sp. nov. differs from Antarctozetes intermedius (Hammer, 1967) by the short rostral setae, very short stalks of bothridial setae, and bidentate lamellar cusps. A revised generic diagnosis is given, Antarctozetes is maintained in Punctoribatidae, although knowledge of juvenile instars is lacking. The relationship of Antarctozetes, Anellozetes, Africoribates and Kilimabates is discussed. Data on habitat and an identification key to known species of Antarctozetes in New Zealand are provided. 

Sign in / Sign up

Export Citation Format

Share Document