Bolm Inst. oceanogr., S Paulo, 26:257-271, 1977 CRUSTACEA ISOPODA COLLECTED DURING THE OC/S "ALMIRANTE SALDANHA" CRUISES IN SOUTHERN SOUTH AMERICA. 11. ADDITIONS TO THE SPECIES OF SEROLIS (FLABELLIFERA J SEROLIDAE) PLíNIO SOARES MOREIRA Instituto da de são Paulo SYNOPSIS This paper reports on part of the species of Leach, 1818 (Crustacea, F1abe11ifera, Sero1idae) co11ected from benthic stations performed during cruises of the Brazilian Navy Oc/s "Almirante Sal- danha" a10ng southern South Ameriea. The speeies studied are schythei Lütken, 1858, polaris Riehardson, 1911, Serolis fo- resti Bastida & Torti, 1970, uapena Moreira, 1971, SeroUs exigua Nordens tam, 1933 and Us e Uiptica Sheppard, 1933. New loca1ities of oeeurrenee are reported, as we11 as it is given a com- plete synonymy for eaeh speeies treated, and for Serolis schythei and Serolis exigua a1so its main distinetive eharaeteristies. INTRODUCTION The pr esent paper reports on the speeies of the marine isopod genus Se- rolis Leaeh, 1818, eo11eeted from benthie stations performed during cruises of the Brazi1ian Navy Oe/S "Almirante Saldanha" a10ng southern South Ameriea. The speeies reported are: S. schythei Lütken, 1858, S. poZaris Riehardson, 1911, S . foresti Bastida & Torti, 1970, S. uaperta Moreira, 1971, S. exigua Nordens tam, 1933 and S. eUiptica Sheppard, 1933 o The position and details of the stations are given in List of Stations and Speeies Present. PUBL o Nr 378 IXJ INSTo OCEANo DA USP.
15
Embed
CRUSTACEA ISOPODA COLLECTED DURING THE OC/S … · The pr esent paper reports on the speeies of the marine isopod genus Se rolis Leaeh, 1818, eo11eeted from benthie stations performed
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Bolm Inst. oceanogr., S Paulo, 26:257-271, 1977
CRUSTACEA ISOPODA COLLECTED DURING THE OC/S "ALMIRANTE SALDANHA" CRUISES IN SOUTHERN SOUTH AMERICA. 11. ADDITIONS TO THE SPECIES
OF SEROLIS (FLABELLIFERAJ SEROLIDAE)
PLíNIO SOARES MOREIRA
Instituto Oceanográ~co da Unive~idade de são Paulo
SYNOPSIS
This paper reports on part of the species of Se~lis Leach, 1818 (Crustacea, F1abe11ifera, Sero1idae) co11ected from benthic stations performed during cruises of the Brazilian Navy Oc/s "Almirante Saldanha" a10ng southern South Ameriea. The speeies studied are Se~lis schythei Lütken, 1858, Se~lis polaris Riehardson, 1911, Serolis foresti Bastida & Torti, 1970, Se~Us uapena Moreira, 1971, SeroUs exigua Nordens tam, 1933 and Se~ Us e Uiptica Sheppard, 1933. New loca1ities of oeeurrenee are reported, as we11 as it is given a complete synonymy for eaeh speeies treated, and for Serolis schythei and Serolis exigua a1so its main distinetive eharaeteristies.
INTRODUCTION
The pr esent paper reports on the speeies of the marine isopod genus Se
rolis Leaeh, 1818, eo11eeted from benthie stations performed during cruises
of the Brazi1ian Navy Oe/S "Almirante Saldanha" a10ng southern South Ameriea.
The speeies reported are: S. schythei Lütken, 1858, S. poZaris Riehardson,
1911, S . foresti Bastida & Torti, 1970, S. uaperta Moreira, 1971, S. exigua
Nordens t am, 1933 and S. eUiptica Sheppard, 1933 o The position and details
of the stations are given in List of Stations and Speeies Present.
PUBL o Nr 378 IXJ INSTo OCEANo DA USP.
258 Bolm Inst. oceanogr., S Paulo, 26, 1977
This paper is the seeond dea1ing with speeies of Serolis of a series to
be pub1ished on speeies of marine isopods, avai1ab1e to the author for
study, eo11eeted on the Oe/S "Almirante Saldanha" eruises.
Serolis schythei Lütken, 1858
(Fig. 1)
Serolis Schythei Lütken, 1858, p. 99-102, p1. lA (figs 12, 13); Grube, 1875,
p.209, 212, 213, 214, 220-225, pl. 5 (fig. 1), pl. 6
(fig.1); Studer, 1879, p. 19,20,21,31; 1884, p. 8,9;
Pfeffer, 1887, p. 57; Do11fus, 1891, p. F59-F61, p1. 8a
(fig.4); Porter, 1917, p. 99; Giambiagi, 1925, p. 11-12,
pl. 2 (fig. 3).
Serolis schythei, Beddard, 1884a, p. 330, 332, 338, 340; 1884b, p. 3,8,13,
p. 581; 1969, p. 38, 39; 1970, p. 67, 68, 98, 99, 101, figo
14; Moreira, 1971a, p. 91, 92, tab1e 2; 1974d, p. 122-124,
127, 128, 129, figs 1-8.
o TYPE LOCALITY Fa1k1and Is1ands, Berke1ey Sound, Lat. 51 35'S, Long. o 57 56'W (Nordenstam, 1933).
~ATERIAL EXAMINED - St. 2886: 1 ovigerous fema1e 7.0 mm 10ng.
264 Bolm Inst. oceanogr., S Paulo, 26, 1977
Fig. 2 - Ser-oZis exigua Nordenstam, ovi ge rous fema 1 e 6.5 mm 10ng (from Morei ra, 1974d).
MAIN DISTINCTlVE CHARACTERISTICS - Body broad, well convexo Head with a
mid-dista l tubercle, which is spiniform and much larger in the male. Antenna
2 with flagellar processo Maxilliped, distaI epipod fused to endite; palp
wi t h 3 articles. Pereonites and pleonites with a median point on distaI
margin. Coxal plates marked off on pereonites II-l;V by dorsal sutures.
Pereonite VI, in the male extending posteriorly to a leveI slightly beyond
pleonite 2 but not beyond pleonite 3, while in the female it extends well
forwardly to both pleonites 2 and 3. Pleon with 3 free pleonites. Pleotelson
with a well defined mid-Iongitudinal carina disrupted about middle leveI; on
either side 2 well marked carinae joining posteriorly in such a manner that
confine a pronouncing triangular area; from the apex of these triangular
areas 1 carina arises fading posteriorly; another carina is present very
laterally, following the outline of the anterolateral margins; apex of
pIeotelson pointed-rounded, distaI margin on either side of apex obliquely
truncate, especially in the female. Uropod biramous.
GEOGRAPHICAL DISTRIBUTION - Chile: off Isla Guafo, Golfo Corcovado, Lat. o o o o 43 25'S, Long. 75 05'W, and Lat. 43 30'S, Long. 74 55'W (Moreira, in press).
Morei ra: Serolis 265
Off Fa1k1and Is1ands (Nordenstam, 1933; Sheppard, 1933; Moreira, in press) •
Argentina: Tierra de1 Fuego, Patagonia (Sheppard, 1933; MOreira, in press).
Uruguay: Lat. 34°25'S, Long. 520 19'W (Moreira, in press). Brazi1: Rio Grande
do Sul, off Albardão, Lat. 330 38'S, Long. 510 04'W (MOreira, 1974d). Present
record: off Argentina. See Fig. 5.
REMARKS The sing1e examined ovigerous fema1e does not shows any re-
markab1e feature justifying detai1ed comments. The body is we11 ca1cified
and arched. The eyes are prominent and deep b1ack. The carinae on the
o s. schythei
.S . polaris
Mo"t •• id<to
.,.,\_." PI''';', .. ,
o S . uigua
.S.elliptica
"'onf''t'id.o
_.).~ ... , PI:lta
tb. Sh Narta
021"
Cb. 5t., 14arh
eU"
". 50' ,.' ". ".
,,'
,,'
,,'
li'
,,'
,.'
,,'
....
Sa"fo~ 14'
,,'
,,' Fig.
,,'
,,' Fig.
,.'
lO'
Fig. li"
LI' .,. '" 4Z·W
.2IU
:3 - Distribution of Serolis schy-thei Lütken, and Serolis paZa-ris Richardson. Records based on specimens studied.
4 - Di st ri but i on of Serolis fares-ti Bast i da & Torti, and Sero-lis uaperrta More ira. Records based on speci mens studied.
5 - Distribution of Serolis exi-gua No rdens tam, and Serolis eUiptica Sheppard. Records based on speci mens studied.
266 Bolm Inst. oceanogr., S Paulo, 26, 1977
pleoteison are pronouncedly marked, and their arrangment agree perfectly
with published accounts.
The color (in alcohol) is dusty yellowish with the middle of head,
pereonites and pleonites slightly pinkish. Large number of small retracted
brownish chromatophores are placed on the lateral portions of the pereon and
pleonites, uropods and concentrated in transverse row on the peduncular
articles of the antennae 1 and 2, both on middle and distally of each arti
cle. The appendages are light yellowish, with few scattered brownish chroma
tophores.
The marsupium 1S very prominent, bearing orange-yellowish eggs partially
visible through the translucent oostegites.
The species is very easily distinguished from the remainder ones of the
genus, especially by the characteristic pattern of carinae on the dorsum of
the pleotelson.
As pointed out previously, males may be distinguished from females by
its smaller size, broader body and by the larger development of the pos
terior spiniform tubercle on the head.
The available data on the occurrence of S. exigua indicate that the
species seems very common in the area where it occurs, sometimes in large
number. It seems fairly abundant on the Argentinian continental shelf (Pata
gonia and Tierra deI Fuego) and off Falkland Islands. The occurrence of the
species off Albardão, Rio Grande do Sul, Brazil (Moreira, 1974d) is so far
BEDDARD, F. E. 1884a. pre1iminary notice of the Isopoda co11ected during the voyage of H.M.S. "Cha11enger". Part I. Se~Zis. Proc. Zool. Soe. London, 23:330-341.
t
More i ra: Serolis 269
BEDDARD, F. E. 1884b. Report on the Isopoda co11ected by R.M.S. "Challenger" during the years 1873-76. Part I. The genus Serolis. Rep. scient. Resu1ts Voy. R.M.S. Cha11enger, Zool., 11:1-83, p1s 1-10.
1885. Note on the distribution of the genus Serolis and its occurrence on the shores of New Zea1and. N. Z. J1 Sei., 2(8): 388-391.
DOLLFUS, A. 1891. Crustacés isôpodes. Mission scient. Cap Rorn, 1882-1883, Zool., 6:F55-F76, p1s 8-8a.
GIAMBIAGI, D. Fuego (1921). p1s 1-4.
1925. Resultados de la Primera Expediciôn a Tierra de1 Crustaceos isôpodos. An. Soe. ciente argent. 49:3-20,
GRUBE, E. 1875. Beitrage zur Kenntniss der Gattung Serolis und einer neuen Art derse1ben. Arch. Naturgesch., 61(1) :208-234, p1s 5-6.
RODGSON, T. V. 1910. Crustacea. IX. Isopoda. Nat. Antarct. (Discovery) Exped. 1901-1904, Nat. Rist., Zool. & Bot., 5:1-77, p1s 1-10.
RURLEY, D. E. 1961. A check1ist and key to the Crustacea Isopoda of New Zea1and and the sub-antarctic Is1ands. Trans. R. Soe. N. Z., n.s., 1(20) :259-292.
KUSSAKIN, O. G. 1967. Isopoda and Tanaidacea from the coasta1 zones of the Antarctic and Subantarctic. In: Bio10gica1 resu1ts of the Soviet Antarctic Expedition(1955-1958) , 3. Iss1ed. Faunei Morei, 4(12) :220-380.
LtlTKEN, C. F. 1858. Beskrive1se af en ny Ser-olis-Art, Serolis sohythei Ltk. Vidensk. Meddr dansk. naturh. Foren., 98-104, p1. lA.
MANE-GARZÓN, F. 1953. Dos especies de1 genero Ser-olis de las aguas uruguayas. Comun. zool. Mus. Rist. nato Montev., 4(69Bis) :1-9, p1s 1-2.
MENZIES, R~ J. 1962. The zoogeography, eco10gy and systematics of the Chi1ean marine isopods. Rep. Lund Univ. Chile Exp. (42). Lunds Univ. arsskr., N.F., Avd. 2, 57(11) :1-162.
MIERS, E. J. 1881. Account of the zoologica1 co11ections made during the survey of R.M.S. "A1ert" in the Straits of Mage11an and on the coast of Patagonia. VI. Crustacea. Proc. zool. Soe. Lond., 21:61-140, p1. 7.
MOREIRA, P. S. 1971a. Species of SeroZis (Isopoda, Flabellifera) from southern Brazi1. Bo1m Inst. oceanogr., S Paulo, 20:85-144.
1971b. Espécies do gênero criôfi10 Serolis (Isopoda, F1abellifera) na plataforma continental centro-sul do Brasil. Ciênc. Cu1t., S Paulo, 23(sup1.) :390.
1973. The bio1ogy of species of Ser-olis (Crustacea, Isopoda, F1abe11ifera) : reproductive behavior of Serolis polaris Richardson, 1911. Bo1m Inst. oceanogr., S Paulo, 22:109-122.
270 Bolm Inst. oceanogr., S Paulo, 26, 1977
MOREIRA, P. S. 1974a. Cryptic protective co1oration in SeroZis Zaevis (Isopoda, F1abe11ifera). Crustaceana, 27(1) :1-4, and SeroZis poZaris
p1. 1.
1974b. A new record of species of SeroZi s (Crustacea, Isopoda, F1abe11ifera) from off southern Brazi1. Bo1m Inst. oceanogr . , S Paulo, 23:89-101.
1974a. New records of species of SeroZi s (Crustacea, Isopoda, F1abe11ifera) from southern Brazi1. Bo1m Inst. oceanogr . , S Paulo, 23:103-119.
1974d. New records (Crustacea, Isopoda, F1abe11ifera) oceanogr., S Paulo, 23:121-153.
and a new from southern
species of SeroZis Brazi1. Bo1m Inst.
1976. Crus t acea Isopoda co11ected during the Oc/s "Almirante Saldanha" cruises in southern South America. I.' Species of SeroZis (F1abellifera, Serolidae). Bo1m Inst . oceanogr., S Paulo, 25 (1) : 113-130.
An account of the Serolidae (Crustacea, Isopoda, F1abe11ifera) co11ected by U.S. Antarctic Expeditions. Pub1ção esp. Inst. oceanogr. S Paulo (in press).
NIERSTRASZ, H. F. 1931. Die Isopoden der Siboga-Expedition.III. Isopoda genuina. 11. F1abe11ifera. Siboga Exped., Mbnogr . , 32c:123-234, pIs 10-11.
NORDENSTAM, A. 1933. Marine Isopoda of the fami1ies Sero1idae, Idotheidae, Pseudidotheidae, Arcturidae, Parase11idae and Stenetriidae main1y from the South At1antic. Further zool. Resu1ts Swed. Antarct. Exped., 3(1):1-284, pIs 1-2.
PFEFFER, G. 1887. Die Krebse von Süd-Georgien nach der Ausbeute der Deutschen Station 1882-83. 1. Tei1. Jahrb. Hamburg Wiss. Anst., 4:1-110, pIs 1-7.
PORTER, C. E. 1917. Los crustaceos de la expedición a Taitao. Bo1n Mus. naco Chile, 10:94-101.
RICHARDSON, H. 1911. Isopodes du Sandwich du Sud. An. Mus. naco Hist. nato B. Aires, ser. 3, 14:395-400.
SHEPPARD, E. 1933. Isopoda Crustacea. Part I. The fami1y Sero1idae. "Discovery" Rep., 7:253-362, p1. 14.
1957. Isopoda Crustacea. Part 11. The sub-order Va1vi-fera. Fami1ies: Idoteidae, Pseudidotheidae and Xenarcturidae fam. n., with a supp1ement to isopod Crustacea, Part I. The fami1y Sero1idae . "Discovery" Rep., 29:141-198, pIs 8-9.
Morei ra: Serolis 271
STUDER, TH. 1879. Beitrag zur Kenntnis niederer Tiere von Kergue1ens-1and. Die Artender Gattung SeroLis vonKergue1ens1and. Arch. Naturgesch., 45(1) :19-34, p1. 3.
1884. Isopoden gesamme1t wahrend der Reise S.M.S. Gaze11e um die Erde 1874-76. Abh. K. preuss. Akad. Wiss. Ber1in, Jahre 1883: 1-28, pIs 1-2.
TATTERSALL, W. M. 1921. Crustacea. Part VI. Tanaidacea and Isopoda. Brit. Antarct. ("Terra Nova") Exped., 1910, Nat. Rist. Rep., Zoo1., 3(8) :191-258, pIs 1-11.
THOMSON, G. M. & CHILTON, CR. 1886. CriticaI 1ist of the Crustacea Ma1acostraca of New Zea1and. Trans. & Proc. New Zea1and Inst., 18:141-161.