Description of Longidorus diadecturus n. sp. (Nematoda: Longidoridae), a vector of the peach rosette mosaic virus in peach orchards in southwestern Ontario, Canada

1982 ◽  
Vol 60 (2) ◽  
pp. 112-115 ◽  
Author(s):  
Eldon S. Eveleigh ◽  
W. R. Allen
Keyword(s):  
Mosaic Virus ◽  
Related Species ◽  
The Body ◽  
Virus Vector ◽  
Closely Related Species ◽  
Larval Stages ◽  
Posterior Position

Longidorus diadecturus n. sp., a virus vector found in peach orchards in southwestern Ontario, is described and illustrated. The most distinguishing feature of the species is the posterior position of the stylet guiding ring (50–64 μm posterior to head apex). It differs from closely related species with a posterior stylet guiding ring by the shape and length of the corpal mucro (sagittate, 1–2 μm), the length of the odontophore (55–66 μm), the expanded, set-off head, and the anteriorly located vulva (44–48%). The body lengths and the tail shapes and sizes are also diagnostic for larval stages.

Larval development of the shrimp Hippolyte sapphica d’Udekem d’Acoz, 1993 forma A and B (Decapoda: Caridea: Hippolytidae) reared in the laboratory, confirmation of the conspecific status of the two forms

Zootaxa ◽  
2010 ◽  
Vol 2579 (1) ◽  
pp. 45 ◽  
Author(s):  
ALEXANDROS NTAKIS ◽  
CHRYSSA ANASTASIADOU ◽  
ROMAN LIASKO ◽  
IOANNIS D. LEONARDOS
Keyword(s):  
Related Species ◽  
Morphological Characters ◽  
Experimental Conditions ◽  
Closely Related Species ◽  
Larval Stages ◽  
Laboratory Confirmation ◽  
Bibliographic Data ◽  
Immature Form ◽  
Complete Series ◽  
First Time

The complete series of larval staging of Hippolyte sapphica d’Udekem d’Acoz, 1993 forma A and B from Louros estuary was studied in the laboratory and described in detail for the first time. The reared larvae of H. sapphica passed through six zoeal stages and one megalopal stage. The larval monitoring completed when the individuals could be assigned clearly to form A and B via rostra formation. Under the experimental conditions, the average durations of the larval stages were as follows: three days for 1 st and 2 nd stages, three to four days for 3 rd , 4 th , 5 th and 6 th stages, four days for the megalopal stage and 19 to 30 days for immature form A and B individuals. Comparison of the larval morphological characters among the described material and the bibliographic data of closely related species was made and discussed. The offspring of females of the forma A includes forma A and B and the same can be said of the offspring of the forma B. This confirms that the formae A and B are indeed conspecific.

THE IDENTITIES OF THREE CLOSELY RELATED WESTERN SPECIES OF PROSIMULIUM (DIPTERA: SIMULIIDAE)

1970 ◽  
Vol 102 (1) ◽  
pp. 118-128 ◽  
Author(s):  
B. V. Peterson
Keyword(s):  
Related Species ◽  
Review Of The Literature ◽  
Closely Related Species ◽  
Larval Stages ◽  
Male Pupa ◽  
First Descriptions

AbstractThe identities of three closely related species, Prosimulium dicum, P. exigens, and P. dicentum, described by Dyar and Shannon in 1927, are clarified. Keys for the separation of the adult, pupal, and larval stages of these species are given. Also presented is a brief review of the literature for each species. A redescription of the female and first descriptions of the male, pupa, and larva of P. dicentum are provided and important taxonomic features illustrated. A lectotype is designated for P. dicum.

Three new species of the genus Tylenchorhynchus Cobb, 1913 (Tylenchidae: Nematoda) from Canada

1969 ◽  
Vol 47 (4) ◽  
pp. 563-567 ◽  
Author(s):  
Liang-Yu Wu
Keyword(s):  
New Species ◽  
Related Species ◽  
Tail Length ◽  
The Body ◽  
Posterior Half ◽  
Closely Related Species ◽  
Three New Species

Three new species of the genus Tylenchorhynchus Cobb, 1913 from Canada are named and described. Tylenchorhynchus irregularis n. sp. differs from all closely related species in the irregular width of the cuticular annulation, especially in the posterior half of the body. T. longus n. sp. is similar to T. superbus Allen, 1955 but differs from this species in relative tail length and annulation of the tail terminus. T. laminatus n. sp. resembles T. leptus Allen, 1955 but differs in the details of the lip region, spear length, and laminated annules.

scholarly journals Targets, Tactics, and Cooperation in the Play Fighting of Two Genera of Old World Monkeys (Mandrillus and Papio):Accounting for Similarities and Differences

2019 ◽  
Vol 32 ◽  
Author(s):  
Kelly L. Kraus ◽  
Vivien C. Pellis ◽  
Sergio M. Pellis
Keyword(s):  
Related Species ◽  
Species Differences ◽  
The Body ◽  
Old World Monkeys ◽  
Closely Related Species ◽  
Old World ◽  
Competition And Cooperation ◽  
Play Fighting ◽  
Attack And Defense ◽  
Bodily Contact

Play fighting in many species involves partners competing to bite one another while avoiding being bitten. Species can differ in the body targets that are bitten and the tactics used to attack and defend those targets. However, even closely related species that attack and defend the same body target using the same tactics can differ markedly in how much the competitiveness of such interactions is mitigated by cooperation. A degree of cooperation is necessary to ensure that some turn-taking between the roles of attacker and defender occurs, as this is critical in preventing play fighting from escalating into serious fighting. In the present study, the dyadic play fighting of captive troops of 4 closely related species of Old World monkeys, 2 each from 2 genera of Papio and Mandrillus, was analyzed. All 4 species have a comparable social organization, are large bodied with considerable sexual dimorphism, and are mostly terrestrial. In all species, the target of biting is the same – the area encompassing the upper arm, shoulder, and side of the neck – and they have the same tactics of attack and defense. However, the Papio species exhibit more cooperation in their play than do the Mandrillus species, with the former using tactics that make biting easier to attain and that facilitate close bodily contact. It is possible that species differences in how rigidly dominance relationships are maintained are expressed in the play of juveniles by altering the balance between competition and cooperation.

A Note on Some Preliminary Observations on the Effect of the Antibiotic Terramycin on Insect Symbiotic Micro-organisms

1951 ◽  
Vol 83 (12) ◽  
pp. 343-345 ◽  
Author(s):  
A. J. Musgrave ◽  
J. J. Miller
Keyword(s):  
Related Species ◽  
The Body ◽  
Considerable Importance ◽  
Sitophilus Granarius ◽  
Closely Related Species ◽  
Body Louse ◽  
General Acceptance ◽  
Early Stages ◽  
Micro Organisms

Micro-organisms that seem to be symbiotic are known to occur in many insects (Steinhaus, 1949). Often these micro-organisms are retained for at least a part of their iife in special organs in the insect's body called ‘mycetomes’. Mansour (1935) following a study of a number of beetles cnntaining micro-organisms concluded, in the two closely related species Sitophilus granarius (L) and Sitophilus oryza (L) that while both species have mycetonies only S. oryza had micro-organisms; a conclusion that his received some general acceptance (Steinhaus, 1946; Wigglesworth, 1947). Thus it could be questioned if the micro-organisms in S. oryza were of benefit to it since S. granarius survived apparently without any (Mansour). However, it has been shown that in some beetles (Blewett & Fraenkel, 1944), in the body louse (Aschner, 1935), and in the hug, Rhodnius, (Brecher & Wigglesworth, 1944) the associated micro-organisms are of considerable importance to the insect. It therefore seemed worth while to study further the condition existing in S. oryza and S. granarius; and in the early stages of this work some interesting phenomena have been observed.

A new and four known species of Diphtherophora (Nematoda: Diphtherophoridae) from Iran, with a diagnostic compendium of its species

Zootaxa ◽  
2017 ◽  
Vol 4365 (3) ◽  
pp. 311
Author(s):  
REZA GHADERI ◽  
LEILA KASHI ◽  
HOSSEIN MIRBABAEI KARANI ◽  
AKBAR KAREGAR
Keyword(s):  
New Species ◽  
Species Identification ◽  
Related Species ◽  
New Records ◽  
The Body ◽  
Body Contour ◽  
Closely Related Species ◽  
Morphometric Characters ◽  
Nematode Fauna

A new and four known species of the genus Diphtherophora—D. geraerti sp. n., D. caudata, D. obesa, D. perplexans and D. tenera—were collected and identified from different plants and localities in Iran. Morphological and morphometric characters of Diphtherophora geraerti sp. n. are compared with those of closely-related species, including D. siddiqii, D. brevicollis, D. lata, D. obesa, D. citri, D. vasilevi and D. vitoshae. Females of the new species have a head continuous with the body contour, spear 11–14 µm in length, rod-shaped spermatozoa and conical tail with bluntly rounded to hemispherical terminus. Males have two ventromedian neck papillae located 22–25 and 52–60 µm from the anterior end, and two ventromedian supplements at 11–13 and 75–80 µm anterior from cloacal aperture, respectively. All Diphtherophora species recovered as part of the present study are new records for the Iranian nematode fauna. Finally, a diagnostic compendium is given, to assist with species identification in the genus. 

Description of the larval stages of Heterosternuta diversicornis (Sharp) (Coleoptera: Dytiscidae, Hydroporinae)

1998 ◽  
Vol 29 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Y. Alarie ◽  
K. Fritz
Keyword(s):  
Related Species ◽  
Abdominal Segment ◽  
Close Similarity ◽  
Maximum Width ◽  
Closely Related Species ◽  
Larval Instars ◽  
Larval Stages ◽  
First Instar

AbstractDescription of structures of all three larval instars of Heterosternuta diversicornis (Sharp) is presented. The chaetotaxy and porotaxy of the cephalic capsule, head appendages, legs, last abdominal segment, and urogomphi are discussed in detail. A close similarity between larvae of H. diversicornis, H. wickhami Zaitzev and H. cocheconis (Fall) is confirmed. All three species distinguish from the closely related species of the genus Neoporus Guignot by (i) a very short and constricted siphon, (ii) the primary setae FE8 and FE9 which are subequal in length to the maximum width of the metafemur (first instar), (iii) the absence of natatory setae on all tibiae and tarsi, and (iv) the contiguous position of the primary setae UR2 and UR3 on the urogomphomere 1.

scholarly journals A first record of the Lined Wrasse Anampses lineatus Randall, 1972 (Perciformes: Labridae) in the Gulf of Mannar, Tamil Nadu, India

2016 ◽  
Vol 8 (6) ◽  
pp. 8923
Author(s):  
S. Prakash ◽  
T. T. Ajith Kumar
Keyword(s):  
Related Species ◽  
Tamil Nadu ◽  
First Record ◽  
The Body ◽  
Morphological Description ◽  
Gulf Of Mannar ◽  
Present Material ◽  
Closely Related Species ◽  
First Time ◽  
Black Color

Lined wrasse Anampses lineatus Randall was recorded off the coast of Tuticorin (Gulf of Mannar), Tamil Nadu, India for the first time. It is easily distinguished by the presence of pale longitudinal lines on the body following scale rows. Broad pale white and black color patch at the base of caudal fin is distinct. Morphological description of A. lineatus is provided based on the present material along with detailed distribution records; habitat and closely related species were also discussed.

scholarly journals The systematic position of some Ethiopian Nippostrongylinae (Nematoda, Trichostrongylina, Heligmosomoidea) from the National Collection of Animal Helminths, Onderstepoort, South Africa

2005 ◽  
Vol 72 (1) ◽  
Author(s):  
M.-C. Durette-Desset ◽  
M.-C. Digiani
Keyword(s):  
South Africa ◽  
New Species ◽  
Related Species ◽  
Taxonomic Status ◽  
Systematic Position ◽  
The Body ◽  
Closely Related Species ◽  
Body Diameter ◽  
Caudal Bursa

The taxonomic status of some nippostrongyline nematodes deposited in the National Collection ofAnimal Helminths, Onderstepoort, is revised. Heligmonina boomkeri n. sp. is described from Aethomys chrysophilus from South Africa. The most closely related species by the body measurementsand the pattern of the caudal bursa is Heligmonina bignonensis Diouf, Bâ & Durette-Desset, 1997, a parasite of Mastomys erythroleucus from Senegal. It differs from the new species mainly in thenumber of ventral cuticular ridges at mid-body (four versus five) and the left ala in the male is shorterthan the body diameter. The systematic position of Heligmonina spira (Ortlepp, 1939) and Neoheligmonella capensis (Ortlepp, 1939) is confirmed here through their synlophe, which was not previously studied.

Notes on the Comparative Reproductive-Biology and the Laboratory Breeding of the Rabbit Flea Xenopsylla-Cunicularis Smit (Siphonaptera, Pulicidae)

1990 ◽  
Vol 38 (5) ◽  
pp. 527 ◽  
Author(s):  
BD Cooke
Keyword(s):  
Relative Humidity ◽  
Reproductive Biology ◽  
Related Species ◽  
Breeding Biology ◽  
Wild Rabbit ◽  
Closely Related Species ◽  
Larval Stages ◽  
Large Numbers ◽  
C 50 ◽  
Laboratory Breeding

The basic breeding biology of the rabbit flea Xenopsylla cunicularis Smit, 1957 is described, and comparisons are made with other closely related species of Xenopsylla and with Spilopsyllus cuniculi (Dale, 1878), another parasite of the wild rabbit. At 22�C and 80% relative humidity the eggs of X. cunicularis hatch 7-8 days after laying, and the larval stages last 8-9 days. Pupation lasts for a further 20 days for females and 27 days for males. However, at lower relative humidities (22�C, 50% RH) rates of development are slowed considerably. A method for rearing large numbers of X. cunicularis in the laboratory is described.

Sign in / Sign up

Export Citation Format

Share Document