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Una de las diferencias entre Web y Web 2.0 es que en la mayoría de las páginas Web tradicionales su finalidad era desplegar información en cambio en
la mayoría de las páginas Web 2.0 ofrecen herramientas y servicios para trabajar en línea. Por esto es importante conocer tales herramientas y servicios, uso y aplicación de los cuales podemos disponer para incorporarlos en los procesos educativos.
Herramientas web 2.0, uso y aplicación.
Opinando sobre Blogs, Wikis, Podcast, SlideShare
Referencias
Solomon, G. & Schrum, L (2007), Web 2.0 new tools, new schools. iste. Washington, D.C.
Ligas de interés
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This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see ). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
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This page should be cited as follows ():Lacerda M,
Takeuchi I,
Masunari S (2011) . ZooKeys 146 : 1–17, : . Versioned wiki page: , version 18427,
, contributors (alphabetical order): .
Citation formats to copy and paste
@article{Lacerda2011ZooKeys146,
author = {Lacerda, Mariana Baptista AND Takeuchi, Ichiro AND Masunari, Setuko},
journal = {ZooKeys},publisher = {Pensoft Publishers},
title = {Redescription of the rare amphipod crustacean Pseudaeginella montoucheti (Quitete, 1971) from Brazil},
year = {2011},
volume = {146},
issue = {},
pages = {1--17},
doi = {10.3897/zookeys.146.1856},
note = {Versioned wiki page: , version 18427,
, contributors (alphabetical order): .}
RIS/ Endnote:
- Redescription of the rare amphipod crustacean Pseudaeginella montoucheti (Quitete, 1971) from Brazil
- Lacerda MA1
Takeuchi IA1
Masunari S
- Pensoft Publishers
- Versioned wiki page: , version 18427,
, contributors (alphabetical order): .
- doi:10.3897/zookeys.146.1856
Wikipedia/ Citizendium:
&ref name=&Lacerda2011ZooKeys146&&{{Citation
| author = Lacerda M,
Takeuchi I,
Masunari S
| title = Redescription of the rare amphipod crustacean Pseudaeginella montoucheti (Quitete, 1971) from Brazil
| journal = ZooKeys
| year = 2011
| volume = 146
| pages = 1--17
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.146.1856
| accessdate =
}} Versioned wiki page: , version 18427,
, contributors (alphabetical order): .&/ref&
See also the .
Ordo: Familia: Genus:
Pseudaeginella montoucheti (Quitete, 1971) –
 : Quitete 1971a, p.189–192, figs. 1–2
Pseudaeginella montoucheti
– Laubitz, 1995, p.88.
MHNCI 2844 One female from the phytal of red alga , 7 m deep, Araras Island (), Tamboretes Archipelago, Santa Catarina, Brazil, 16th May, 2009.
MHNCI 2845 One male and two females from the phytal of the calcareous red alga , 4 m deep.
MHNCI 2846 Three males and two females from the phytal of , 1.5 m deep, Pássaros Island (), Tamboretes Archipelago, Santa Catarina, Brazil, 16th May, 2009.
MHNCI 2847 Four males and two females from the phytal of brown alga , Bombinhas (), Santa Catarina, Brazil, 30th June, 2011.
CEZ 968 Holotype male from of
Itamaracá, Pernambuco, Brazil 5th August, 1968. Collector: Dr. Pierre Montouchet.
CEZ 971 Two paratypes males and three paratypes females from of , Mar Grande, Bahia, Brazil, 22th January, 1968. Collector: Dr. Pierre Montouchet.
CEZ 972 12 paratypes males and eight paratypes females from of , Itamaracá, Pernambuco, Brazil 5th August, 1968. Collector: Dr. Pierre Montouchet.
CEZ 973 Seven paratypes males and four paratypes females from of , Mar Grande, Bahia, Brazil, 22th January, 1968. Collector: Dr. Pierre Montouchet.
CEZ 974 One paratype male and one paratype female from of , Guarapari, Espírito Santo, Brazil, 6th September, 1968. Collector: Dr. Pierre Montouchet.
Male (Fig. 1A). Body length 3.0 mm. Pereonites 3 and 4 the longest, followed by pereonites 2 and 5. Head and pereonite 1 (suture clearly present) concave along dorsal margin, head with an anteriorly curved mid-dorsal projection, pereonite 1 with a small postero-dorsal projection. Pereonite 2with paired mid-dorsal projections, 1 postero-dorsal projection, paired antero-lateral projections and paired mid-lateral projections. Pereonite 3 with paired mid-dorsal projections, 1 postero-dorsal projection and paired mid-lateral projections. Pereonite 4 with paired mid-dorsal projections, 1 weak postero-dorsal projection, paired antero-lateral projections and paired mid-lateral projections. Pereonite 5 withpaired mid-dorsal projections, paired antero-lateral projections and paired mid-lateral projection near the swollen basal part of pereopod 5. Pereonite 6 with paired postero-lateral projections near the basal part of pereopod 6.
Antennae (Figs. 2A, 2B). Antenna 1 about half body length. Peduncular articles with ca. 10 to 20 simple se peduncular article 2 the longest followed by article 1. Flagellum 6-articulate with 4/5 of peduncular length. Antenna 2 about 4/5 of antenna 1 length, wi peduncular set flagellum with 8 and 6 simple setae in the proximal and distal articles.
Mouthparts (Figs. 3A–G). Upper lip notched, forming rounded projections. Right mandiblewith incisor with 5 teeth and followed by lacinia mobilis with 5 teeth and 3 palp article 2 with 1 palp article 3 setal formula 1–6–1 with a distal knob. Left mandible incisor with 5 teeth followed by 3 palp article 2 with 1 palp article 3 setal formula 1–6–1 with a distal knob. Lower inner lips round and fused each other, outer lobes round with 1 apical seta. Maxilla 1outer plate with 6 stout apical setal- palp distal margin with 4 setae. Maxilla 2inner plate triangular with 4 outer plate elongate with about 4 apical setae. Maxilliped basal endite (inner plate) with 2 s ischial endite (outer plate) oval, 2 times longer than inner plate, with 4 or 5 s palp article 2 with 2 or 3 s palp article 3 with 5 palp article 4 (dactylus) weakly falcate.
Gnathopod 1 basis as long as ischium, merus and carpus combined, covered by sparse se propodus subtriangular, palm with a pair of proximal stout setae (grasping spines) and a row of 8 dactylus with sparse and short setae, inner margin smooth with a teeth subdistally (Fig. 2C).
Gnathopod 2 inserted in the pereonite 2 at 2/5 from anterior margin (Fig. 1A); basis 1.3 times of pereonite 2 length, with a spiny projection near antero- carpus triangular and provided with propodus oval, ratio between width: length = 0.57, inner margin provided with 1 stout setae proximally, 3 triangular projections medially and distally and numerous setae: few simple setae dactylus shorter than palm and slightly curved with a row of setulae alongside the inner margin (Fig. 2D).
Gill 3length 2/5 of corresponding pereonite, elliptical (Fig. 1A), pereopod 3 tiny with 2 simple setae apically (Fig. 4A). Gill 4length 1/3 of corresponding pereonite, elliptical (Fig. 1A), pereopod 4 similar to pereopod 3 (Fig. 4B).
Pereopod 5 basis to carpus furnished with 3–10 se palm of propodus very slightly concave with 2 setae proximally and a row of 7 ro dactylus slightly curved (Fig. 4C). Pereopods 6 and 7 similar to pereopod 5 in feature but increasing in size (Figs. 4D, 4E).
Penes length about 2 times width (Fig. 4F).
Abdomen with a pair of lateral lobes and dorsal lobe with a pair of dorsal setae (Fig. 4F).
Female. Body length 3.1 mm (Fig. 1B). Pereonites 3 and 4 subequal and the longest, followed by pereonite 2. Clear suture between head and pereonite 1, head with 1 anteriorly curved mid-dorsal projection. Antenna 1 flagellum 7-articulate. Pereonite 1with 1 postero-dorsal projection. Pereonite 2with paired mid-dorsal projections, 1 postero-dorsal projection and paired antero-lateral projections. Pereonite 3with paired mid-dorsal projections, 1 postero-dorsal projection, paired mid-lateral projections and paired postero-lateral projections. Pereonite 4with paired mid-dorsal projections and paired mid-lateral projections. Pereonite 5with paired mid-dorsal projections. Gnathopod 2 propodus length 1.5 times width (Fig. 2E), with grasping spine proximally followed
two smooth triangular projections medially.
In adult males and females including those collected by Quitete (Quitete, 1971a) in Pernambuco State, the number of articles in the flagellum of antenna 1 varies from 5 to 7 during growth. The size reduction of the mid-dorsal projections on pereonites 3 and 5 mentioned by this author was only found among specimens studied by her. Setal formula for terminal article of mandibular palp can be 1–5-1 or 1–6-1. The body spination is rather constant among individuals summing up 30 spines in males.
Itamaracá, Pernambuco State, Brazil.
Western South Atlantic. Brazil. Itamaracá, Pernambuco S Oliven?a, Ilhéus, Bahia S Vitória and Guarapari, Espírito Santo State (Quitete 1971a). Ubatuba, S?o Paulo State ( – ) (Jacobucci et al. 2002, 2009). Paranaguá Bay, Paraná State (). Tamboretes Archipelago: Pássaros Island (26°22'S, 48°31'W) and Araras Island (), Balneário Barra do Sul and Bombinhas Beach, Bombinhas, Santa Catarina State (present study).
Amongst thallii of the brown seaweed
sp. (Quitete 1971a and present paper),
(Jacobucci et al. 2002) and
(Jacobucci et al. 2009); on boat hulls and floating piers (Neves 2006); amongst thallii of the red algae
and tubular branches of polychaete colony (present paper).
Takeuchi (1993) proposed a classification with four families, , , , and
for the Amphipoda
( excluded) based on the cladistic analysis.
were set under the . At the same time, Laubitz (1993) proposed a classification with eight families, , , , , , ,
and . In her classification system,
were included in
which is considered to be more related to
The above treatment of
performed by Takeuchi (1993) was followed by Myers and Lowry (2003) and Vassilenko (2006). In the higher classification system of Myers and Lowry (2003) based on cladistic analysis of corophiid amphipods, ,
are included among the . The Caprellidaeof Myers and Lowry (2003) is composed of two subfamilies,
with ca. 50 genera constitute the
(Myers and Lowry 2003). Vassilenko (2006) reviewed the recent studies dealing her support to Takeuchi's (1993) treatment more than to Laubitz (1993) concerning to the phylogeny of the .
was established based on
McCain, 1968 collected from Florida, U.S.A, Antigua & Barbuda and St. Lucia (McCain 1968), just prior to Quitete (1971a). The suggestion of synonymy of these two genus, i.e.,
was mentioned under remarks of
by McCain (1968). The lack of reference materials of
(Stebbing, 1888), the type species of , has been led to the presumption towards absence of pereopods 3 and 4 in . At the same time,
was recorded to possess 1-articulate pereopods 3 and 4 in the generic description for . He also noted that, in case of presence of pereopods 3 and 4 in the two known species of ,
would fall as junior synonym of
(see McCain 1968, p. 100). Almost 30 years later, Laubitz (1995) examined individuals of
collected from Amsterdam Islands in the southern Indian Ocean and reported the synonymy of these two genera based on the presence of minute pereopods 3 and 4 on these specimens.
Pseudaeginella montoucheti (Quitete, 1971) is a tiny caprellidean that measures less than 3.5 mm in body length (see Fig. 1). Within this genus, Pseudaeginella montoucheti is the second spiniest species (total of 30 spines on the head and pereonites 1–7 of males) and only surpassed by
that has a total of 33 spines on body surface. In the drawing of Pseudaeginella montoucheti from Pernambuco State performed by Quitete (1971a) the following body projections are missing in male: a pair of dorsal projections instead of one dorsal spine medially on pereonite 5 and ventro-lateral projections over the insertion of pereopod 5 and 6 on pereonite 5 and 6, respectively. In spite of the wide distribution, Pseudaeginella montoucheti showed a relatively low intraspecific variation in its external morphology.
Although restricted to the Atlantic coast of Brazil, the present study showed that Pseudaeginella montoucheti is distributed along more than 2,600 km, from tropical (Itamaracá Island, Pernambuco State, ) to subtropical (municipalities of Barra do Sul,
and Bombinhas, , Santa Catarina State) latitudes. Recently,
Kr?yer, 1843 was also reported showing wide distribution from Sao Paulo State, Brazil (Jacobucci et al. 2002) to Mar del Cobo and Mar del Plata Harbour, Argentina along the south Atlantic coast of South America (Masunari and Takeuchi 2006).
Mayer, 1890 is currently composed of 10 species:
Barnard, 1932 from Antigua and Barbuda,
(McCain, 1968) from Florida, U.S.A.,
Guerra-García, 2003b from subantarctic islands of New Zealand,
Guerra-García, Krapp-Schickel & Müller, 2006 from Colombia,
Krapp-Schickel & Guerra-García, 2005 from Indonesia, Pseudaeginella montoucheti (Quitete, 1971) from Brazil,
(Müller, 1990) from Bora Bora and Moorea, French Polynesia,
Laubitz, 1995 from St. Paul and Amsterdam Islands, France,
(Stebbing, 1888) from Tristan da Cunha, and
Guerra-García, 2004 from Australia.
Of 10 species of , the closest species to Pseudaeginella montoucheti can be considered
that wasdescribed from St. Paul and Amsterdam Islands, South Indian Ocean (Laubitz 1995), since both are the spiniest species within the genus. On the other hand, Pseudaeginella montoucheti can be distinguished from
by the spinier body, antenna 1 length equals half body in males, and presence of ventro-lateral spines over gills on pereonites 3 and 4.
A key to the species of
it was mainly based on the characteristics of body somites because these can be observed without dissections of mouthparts.
Key to species of the genus
Remarks — , ,
1aAntenna 1 longer than half of body length   2
1bAntenna 1 equal or shorter than half of body length   5
2aBasis of gnathopod 2 longer than propodus length    (Fig. 5A)
2bBasis of gnathopod 2 shorter than propodus length   3
3aBasis of gnathopod 2 approximately the length of pereonite 2    (Fig. 5B)
3bBasis of gnathopod 2 longer than pereonite 2 length   4
4aPereonites 2, 3, 4 and 5 with lateral projections near the insertion of gnathopod 2, gills and pereopods 5    (Fig. 5C)
4bPereonites 2, 3, 4 and 5 without lateral projections   (Fig. 5D)
5aPereonites with dorsal projections   6
5bPereonites without any dorsal projections   8
6aBasis of gnathopod 2 provided with a rounded projection proximally    (Fig. 5E)
6bBasis of gnathopod 2 without any projection   7
7aPereonites 4 and 5 with a paired antero-lateral projections, body somites with a total of more than 30 projections   Pseudaeginella montoucheti (Fig. 6A)
7bPereonites 4 and 5 without any antero-lateral projections, body somites with a total of less than 30 projections    (Fig. 6B)
8aBasal article of antenna 2 peduncle with a distal projection, well marked suture between head and pereonite 1    (Fig. 6C)
8bBasal article of antenna 2 peduncle without any projection, discrete suture between head and pereonite 1    (Fig. 6D)
Lacerda, M; Takeuchi, I; Masunari, S; 2011: Redescription of the rare amphipod crustacean Pseudaeginella montoucheti (Quitete, 1971) from Brazil
146: 1-17. :
Quitete J (1971a) Fallotritella montoucheti nova espécie de Caprellidae da costa brasileira (Crustacea: Amphipoda). Atas da Sociedade de Biologia do Rio de Janeiro 14 (5/6): 189–192.
Jacobucci G, Moretti D, Silva E, Leite F (2002) Caprellid amphipods on Sargassum cymosum (Phaeophyta): depth distribution and population biology. Nauplius 10 (1): 27-36.
Jacobucci G, Tanaka M, Leite F (2009) Temporal variation of amphipod assemblages associated with Sargassum filipendula (Phaeophyta) and its epiphytes in a subtropical shore. Aquatic Ecology 43: .
Neves C (2006) Bioinvas?o mediada por embarca??es de recreio na Baía de Paranaguá, PR e suas implica??es para a conserva??o. Master Thesis, Federal University of Paraná, Curitiba.
Takeuchi I (1993) Is the Caprellidea a monophyletic group ? Journal of Natural History 27: 947–964.
Laubitz D (1993) Caprellidea (Crustacea: Amphipoda): towards a new synthesis. Journal of Natural History 27: 965-976.
Myers A, Lowry J (2003) A phylogeny and a new classification of the Corophiidea Leach, 1814 (Amphipoda). Journal of Crustacean Biology 23 (2): 443-485. 2.0.CO;2 doi: 10.72(3:APAANC]2.0.CO;2]
Vassilenko S (2006) Caprellids. In: Kasyanov VL (Ed) Biota of the Russian Waters of the Sea of Japan 4, 200 pp. [In Russian and in English]
McCain J (1968) The Caprellidae (Crustacea: Amphipoda) of the Western North Atlantic. United States. Bulletin of the United States National Museum 278(I/IV): 1–145.
Laubitz D (1995) Caprellidea (Crustacea: Amphipoda) from the Southern and Western Indian Ocean. Mésogée 54: 81-100.
Masunari S, Takeuchi I (2006) Redescription of Caprella dilatata Kr?yer, 1843 (Caprellidae: Amphipoda: Crustacea) from Brazil, with note on its biogeographical distribution in South America. Zootaxa .
Figure 1. Pseudaeginella montoucheti (Quitete, 1971). A male, lateral view B female, lateral view. Scale bar: 1.0 mm. Figure 2. Pseudaeginella montoucheti (Quitete, 1971). A–D male. A antenna 1 B antenna 2 C gnathopod 1 D gnathopod 2. E female gnathopod 2. Scale bars: A–E: 0.2 mm. Figure 3. Pseudaeginella montoucheti (Quitete, 1971). Male. A maxilliped B left mandible C right mandible D maxilla 1 E maxilla 2 F upper lip G lower lip. Scale bars: A–G: 0.05 mm. Figure 4. Pseudaeginella montoucheti (Quitete, 1971). Male. A pereopod 3 and gill 3 B pereopod 4 and gill 4 C pereopod 5 D pereopod 6 E pereopod 7 F abdomen (ventral view). Scale bars: A,B: 0.1 mm. C–F: 0.2 mm. Figure 5.
Laubitz, 1995 (Redraw from Laubitz 1995) B
(McCain, 1968)(Redraw from Guerra-García 2002. Scale bar 0.05 mm) C
Guerra-García, Krapp-Schickel & Müller, 2006 (Redraw from Guerra-Garcíaet et al. 2006. Scale bar 1 mm) D
(Müller, 1990. Scale bar 500 um) (Redraw from Müller 1990) E
Guerra-García, 2003 (Redraw from Guerra-García 2003. Scale bar 1 mm). Figure 6.
spp. A Pseudaeginella montoucheti (Quitete, 1971). Scale bar 1 mm B
(Stebbing, 1888) (Redraw from Laubitz 1995) C
Guerra-García, 2004 (Redraw from Guerra-García 2004. Scale bar 1 mm) D
Krapp-Schickel & Guerra-García, 2005 (Redraw from Krapp-Schickel and Guerra-García 2005. Scale bar 1 mm). 
Laubitz D (1995) Caprellidea (Crustacea: Amphipoda) from the Southern and Western Indian Ocean. Mésogée 54: 81-100.
Guerra-García J (2002) Redescription of five rare caprellids (Crustacea: Amphipoda) collected from Tanzanian coasts. Helgoland Marine Research 55: 221-231.
Guerra-García J, Krapp-Schickel T, Müller H (2006) Caprellids from the Caribbean Coast of Colombia, with description of three new species and a key for species identification. BoletíndeInvestigaciones MarinasyCosteras 35: 149-194.
Müller H (1990) New species and records of coral reef inhabiting Caprellidae from Bora Bora and Moorea, Societ Islands (Crustacea: Amphipoda). Revue Suisse de Zoologie 97 (4): 827-842.
Guerra-García J (2003b) The caprellidean Amphipoda from the subantarctic islands of New Zealand and Australia with the description of a new genus and two new species. Scientia Marina 67 (2): 177-194.
Guerra-García J (2004) The Caprellidea (Crustacea, Amphipoda) from Western Australia and Northern territory, Australia. Hydrobiologia 522: 1-74. 10.1023/B:HYDR..07691.a7
Krapp-Schickel T, Guerra-García J (2005) Littoral Caprellidae (Crustacea: Amphipoda) from Indonesia, with the description of a new species. Bollettino del Museo Civico di Storia Naturale di Verona 29: 47-62.