Free-living Copepoda from Ifaluk Atoll in the Caroline Islands with Notes on Related Species

Vervoort, W.

doi:10.5479/si.03629236.236.1

Cited by 74 publications

(67 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Vervoort 1962); consequently, Lang's (1944Lang's ( , 1948 subdivision was fi nally disposed off by Wells (2007). Vervoort (1964) remarked that Paralaophonte Lang, 1944 is an unavailable generic name which was subsequently validated by Lang (1948) by the indication of a type species (Cleta brevirostris Claus, 1863) and the provision of an accompanying generic diagnosis. Th e authorship and date of this genus should, therefore, be attributed as Paralaophonte Lang, 1948(Huys 2009b.…”

Section: Key To the Species Of Paralaophonte Lang 1948mentioning

confidence: 99%

Proposal of Marbefia, gen. n. and Inermiphonte, gen. n., including updated keys to the species of Pseudonychocamptus Lang, 1944 and Paralaophonte Lang, 1948 (Copepoda, Harpacticoida, Laophontidae)

Huys¹,

Lee²

2009

470

View full text Add to dashboard Cite

Both sexes of the enigmatic laophontid species Pseudonychocamptus carthyi Hamond, 1968 (Copepoda, Harpacticoida) are redescribed in detail based on type and other material from Norfolk, England. The species exhibits marked differences with other Pseudonychocamptus species and is consequently fixed as the type of a new genus Marbefia, gen. n., being defined by the following autapomorphies: (1) P2–P4 enp-2 (except P4 enp-2 in ♂) inflated, with two parallel rows of flimsy setular extensions; (2) P4 with sexually dimorphic setation on enp-2 (outer distal seta reduced in ♀, very long in ♂); and (3) antennule ♀ with spinules along posterior margins of segments 1–6. Laophonte danversae Hamond, 1969, “Laophontid male, ?gen., ?sp.” sensu Hamond (1969) [renamed as Inermiphonte hamondi, sp. n.] and Laophonte ?drachi Médioni & Soyer, 1966 are collectively placed in a new genus Inermiphonte, gen. n. which shares as sistergroup relationship with Harrietella T. Scott, 1906. Marbefia, gen. n. is considered sister to a clade comprising the genera Pseudonychocamptus Lang, 1944, Pilifera Noodt, 1952, Inermiphonte, gen. n. and Harrietella. Pseudonychocamptus kolarovi Apostolov, 2008 is transferred to Paralaophonte whereas Chislenko’s (1967) record of P. koreni Sars, 1908a is considered doubtful. Willey’s (1935) variety “fissirostris” of Paralaophonte brevirostris (Claus, 1863) is rejected pending a thorough analysis of the variability in the P. brevirostris complex of species. P. congenera mediterranea Lang, 1948 appears to be more closely related to P. lacerdai Jakobi, 1953 than to its nominotypical subspecies P. congenera congenera (Sars, 1908b) whereas P. pacifica galapagoensis Mielke, 1981 (here upgraded to full specific rank) is more similar to P. brevirostris than to its nominotypical subspecies P. pacifica pacifica Lang, 1965. A new species, Paralaophonte pallaresae, sp. n. is proposed for P. gracilipes Brady, 1910 sensu Pallares (1968). The potentially paraphyletic status of the genus Paralaophonte is discussed. Dichotomous identification keys are provided for the valid species of Pseudonychocamptus Lang, 1944 and Paralaophonte Lang, 1948

show abstract

Section: Key To the Species Of Paralaophonte Lang 1948mentioning

confidence: 99%

Proposal of Marbefia, gen. n. and Inermiphonte, gen. n., including updated keys to the species of Pseudonychocamptus Lang, 1944 and Paralaophonte Lang, 1948 (Copepoda, Harpacticoida, Laophontidae)

Huys¹,

Lee²

2009

470

View full text Add to dashboard Cite

show abstract

“…however, we have no direct observations on the role of this exopodal hook. interestingly, a similar modification was described by Vervoort (1964) in the male of Pseudocyclops pacificus Vervoort, 1964. however, in P. pacificus, the modification of the exopod of right leg 2 differs in detail.…”

Section: Interbreeding Experimentsmentioning

confidence: 68%

“…however, in P. pacificus, the modification of the exopod of right leg 2 differs in detail. it is restricted to the third exopodal segment and it is the middle of the three marginal spines that is developed into a strongly curved hook (Vervoort, 1964: fig. 4c).…”

Section: Interbreeding Experimentsmentioning

confidence: 99%

Morphological variation and a remarkable new sexual dimorphism in the <em>Pseudocyclops xiphophorus</em> population of Lake Faro in northeastern Sicily</span></td>

Brugnano¹,

Boxshall²,

Costanzo³

et al. 2009

Sci. Mar.

View full text Add to dashboard Cite

, the natural history museum, Cromwell road, london sW7 5BD, u.K.summary: the population of P. xiphophorus in lake faro exhibits variation in the form of caudal seta V. in some specimens of both sexes, this seta is spatulate but in others it is slender and unmodified. occasional specimens are asymmetrical. in addition to this variation in caudal seta form, the lake faro population displays variation in male body length and in the extent of the sexually dimorphic specialisation of the right swimming leg 2. the scale of these differences between the morphotypes might suggest their taxonomic treatment as distinct species. the modification of the distal two segments of the exopod of right leg 2 in the male is a unique sexual dimorphism. We infer, from the presence of this hook on the right exopod in adult males only, that it is involved in mating behaviour. laboratory-based breeding experiments between females and males showing different combinations of these characters were also performed. experiments comparing egg production rates in females that have mated with modified or unmodified males revealed no significant differences. it appears therefore that gene flow is not interrupted between the morphotypes and that reproductive segregation does not occur. observations of male leg 5 morphology and musculature revealed no significant differences between the two P. xiphophorus morphotypes.Keywords: Pseudocyclops xiphophorus population, lake faro, morphotypes, sexual dimorphism, morphological observation and interbreeding experiments.resumen: Variación morfológica y un nuevo y remarcable tipo de dimorfismo sexual en la población de PseudocycloPs xiPhoPhorus del Lago Faro en el noreste de Sicilia. -la población de P. xiphophorus del lago faro muestra variación en la forma de la seda caudal V. en algunos especímenes de ambos sexos presenta una morfología espatulada, pero en otros es esbelta y sin modificaciones. ocasionalmente, es asimétrica en un mismo individuo. la población del lago faro muestra también variabilidad en la longitud corporal del macho y en el grado de dimorfismo sexual de la segunda pata natatoria derecha. la escala de estas diferencias entre morfotipos podría sugerir un tratamiento específico diferente para ellos. la modificación en el macho de los dos segmentos distales del exópodo de la segunda pata natatoria derecha es un carácter desconocido en otras especies del género. la presencia de un gancho en el exópodo derecho de los machos sugiere que esta modificación está relacionada con el comportamiento de apareamiento. se han realizado cruzamientos en laboratorio entre hembras y machos que mostraban diferentes combinaciones de estos caracteres. la comparación de las tasas de producción de huevos en hembras que se han cruzado con machos con o sin modificaciones no muestra diferencias significativas. parece por tanto que el flujo génico entre morfotipos no está interrumpido y que no tiene lugar segregación reproductiva. la observación de la morfología y del patrón muscular de la pata quinta del macho no ...

show abstract

“…A similar polymorphism also has been reported for P. obtusatus asymmetrica by Ummerkutty 1968 and for P. xiphophorus by Brugnano et al (2009). Vervoort (1964) initially described a male genderlimited asymmetry of the exopod of swimming leg 2 of Pseudocyclops, viz. the distolateral seta on the distal exopodal complex of males of P. paciWcus.…”

Section: Discussionmentioning

confidence: 78%

“…Three species known regionally are P. cokeri Bowman and González, 1961, P. rostratus Bowman and González, 1961, and P. rubrocinctus Bowman and González, 1961 from the Caribbean Sea and Gulf of Mexico (see Bowman and González 1961;Fosshagen 1968). Pseudocyclops obtusatus and its subspecies have been reported from the Atlantic Ocean (Brady and Robertson 1873), the Indian Ocean (Sewell 1932;Ummerkutty 1968), and the PaciWc Ocean (Vervoort 1964), but the conspeciWcity of these specimens has been questioned (Haridas et al 1994). Pseudocyclops xiphophorus Wells, 1967 has been reported as occurring naturally in coastal waters of the Indian Ocean oV Mozambique and in Lake Faro, Sicily (see Wells 1967;Zagami et al 2005;Brugnano et al 2009) although neither a Lessepsian dispersion (Por 1971) nor an introduction by ship ballast water (Carlton 1985) was considered for either of these populations.…”

Section: Introductionmentioning

confidence: 99%

Pseudocyclops schminkei (Copepoda, Calanoida, Pseudocyclopidae): a new species from Okinawa

2009

View full text Add to dashboard Cite

Both genders of Pseudocyclops schminkei n. sp. are described from a pearl Wshery aquarium on Zamami Island, Okinawa, Japan; it is the 37th species of the genus. Pseudocyclops schminkei sp. nov. diVers from other species of the magnus species group in the shape of the lobes of distal exopodal segment of the male left leg 5, and the morphology of setae on middle and distal exopodal segment of male right swimming leg 2. Aspects of the morphology of P. xiphophorus and P. bilobatus are redescribed, and an unnamed Pseudocyclops sp. from the Shedd Aquarium in Chicago, IL, is brieXy noted. Females of P. schminkei sp. nov., P. xiphophorus and Pseudocyclops sp. could not be separated from each other with the small number of specimens available in this study for the former two species.

show abstract

Free-living Copepoda from Ifaluk Atoll in the Caroline Islands with Notes on Related Species

Cited by 74 publications

References 10 publications

Proposal of Marbefia, gen. n. and Inermiphonte, gen. n., including updated keys to the species of Pseudonychocamptus Lang, 1944 and Paralaophonte Lang, 1948 (Copepoda, Harpacticoida, Laophontidae)

Proposal of Marbefia, gen. n. and Inermiphonte, gen. n., including updated keys to the species of Pseudonychocamptus Lang, 1944 and Paralaophonte Lang, 1948 (Copepoda, Harpacticoida, Laophontidae)

Morphological variation and a remarkable new sexual dimorphism in the <em>Pseudocyclops xiphophorus</em> population of Lake Faro in northeastern Sicily</span></td>

Pseudocyclops schminkei (Copepoda, Calanoida, Pseudocyclopidae): a new species from Okinawa

Contact Info

Product

Resources

About