A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa
Описана морская рыбья пиявка Austrobdella oosthuizeni A. Utevsky, sp. n. из прибрежных вод Южной Африки. Экземпляры достигают длины 9,7 мм, трахелосома субцилиндрическая, уросома уплощенная без боковых пузырей; тело не пигментировано, полупрозрачное; глаза и глазки отсутствуют (у фиксированных экзем...
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Інститут зоології ім. І. І. Шмальгаузена НАН України
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| Zitieren: | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa / A. Yu. Utevsky // Вестн. зоологии. — 2004. — Т. 38, № 5. — С. 79-83. — англ. |
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| citation_txt | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa / A. Yu. Utevsky // Вестн. зоологии. — 2004. — Т. 38, № 5. — С. 79-83. — англ. |
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| description | Описана морская рыбья пиявка Austrobdella oosthuizeni A. Utevsky, sp. n. из прибрежных вод Южной Африки. Экземпляры достигают длины 9,7 мм, трахелосома субцилиндрическая, уросома уплощенная без боковых пузырей; тело не пигментировано, полупрозрачное; глаза и глазки отсутствуют (у фиксированных экземпляров). Все экземпляры собраны с лобстера Jassus lalandii (Crustacea, Decapoda).
The marine piscicolid leech Austrobdella oosthuizeni A. Utevsky, sp. n. from the coastal waters of South Africa is described and illustrated. The body is up to 9.7 mm long, trachelosome subcylindrical, urosome flattened without pulsatile vesicles; body unpigmented, semitransparent; eyes and ocelli absent (in fixed specimens). The specimens were collected on Jassus lalandii (Crustacea, Decapoda).
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UDC 595.143(6–13)
A NEW SPECIES OF MARINE LEECHES (HIRUDINEA,
PISCICOLIDAE) FROM THE COASTAL WATERS
OF SOUTH AFRICA
A. Yu. Utevsky
V. N. Karazin Kharkiv National University, Kharkiv, 61077 Ukraine
E-mail: andrei.yu.utevsky@univer.kharkov.ua
Accepted 12 November 2003
A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa.
Utevsky A. Yu. — The marine piscicolid leech Austrobdella oosthuizeni A. Utevsky, sp. n. from the coas-
tal waters of South Africa is described and illustrated. The body is up to 9.7 mm long, trachelosome
subcylindrical, urosome flattened without pulsatile vesicles; body unpigmented, semitransparent; eyes
and ocelli absent (in fixed specimens). The specimens were collected on Jassus lalandii (Crustacea,
Decapoda).
Ke y wo r d s: Austrobdella oosthuizeni sp. n., Hirudinea, Piscicolidae, Jassus lalandii, South Africa.
Íîâûé âèä ìîðñêèõ ïèÿâîê (Hirudinea, Piscicolidae) èç ïðèáðåæíûõ âîä Þæíîé Àôðèêè. Óòåâ-
ñêèé À. Þ. — Îïèñàíà ìîðñêàÿ ðûáüÿ ïèÿâêà Austrobdella oosthuizeni A. Utevsky, sp. n. èç ïðè-
áðåæíûõ âîä Þæíîé Àôðèêè. Ýêçåìïëÿðû äîñòèãàþò äëèíû 9,7 ìì, òðàõåëîñîìà ñóáöèëèíäðè-
÷åñêàÿ, óðîñîìà óïëîùåííàÿ áåç áîêîâûõ ïóçûðåé; òåëî íå ïèãìåíòèðîâàíî, ïîëóïðîçðà÷íîå;
ãëàçà è ãëàçêè îòñóòñòâóþò (ó ôèêñèðîâàííûõ ýêçåìïëÿðîâ). Âñå ýêçåìïëÿðû ñîáðàíû ñ ëîáñòå-
ðà Jassus lalandii (Crustacea, Decapoda).
Êëþ÷åâûå ñ ëîâ à: Austrobdella oosthuizeni sp. n., Hirudinea, Piscicolidae, Jassus lalandii, Þæíàÿ
Àôðèêà.
Introduction
The only one species of piscicolid leeches Malmiana stellata (Moore, 1958) has been recorded from the
coastal waters of South Africa (Natal). However, the leech fauna of this region was found to be more diverse
than considered before. The leech described in this paper was collected in October–November 1968. Thirty
specimens (3 lots) of the species were collected by J. H. Oosthuizen (University of Pretoria) at Blouber-
gstrand (RSA) on Jassus lalandii.
Material and methods
Leeches were preserved in 10% formalin or in 70% ethanol. Two individuals of Austrobdella oosthuizeni
sp. n. were embedded in paraffin; transverse sections were cut at 5 mkm and stained with Mallory’s triple
stain. Two individuals were longitudinally dissected for examining the reproductive and digestive systems. The
holotype and paratypes of Austrobdella oosthuizeni sp. n. are deposited in the Zoological Museum of the
National Academy of Sciences of Ukraine (Kyiv). Other specimens are in the collection of the Department
of Zoology and Animal Ecology of the Kharkiv National University (Ukraine).
FAMILY PISCICOLIDAE JOHNSTON, 1865
SUBFAMILY PLATYBDELLINAE EPSTEIN, 1970
Genus Austrobdella Badham, 1916
Typ e s p e c i e s: Austrobdella translucens Badham, 1916.
Diagnoses for this genus were proposed by C. Badham (1916), D. Ingram (1957),
and R. Sawyer (1986). There is a need to make up a new diagnosis due to new infor-
mation obtained during this research.
Vestnik zoologii, 38(5): 79–83, 2004
© A. Yu. Utevsky, 2004
Dia gno s i s. Small leeches. Body flattened, distinctly divided into trachelosome
and urosome, surface smooth, without ornamentation. Complete somite 6-annulate,
without segmental ocelli and pigment bands.
Anterior sucker small, distinctly separated from trachelosome, surface smooth, eye-
like spots present or absent.
Posterior sucker small or medium sized, distinctly separated from urosome, surface
smooth, ocelli absent.
Digestive system. Oesophageal diverticula present or absent. Crop chambers well-
developed. Posterior crop caeca fused in different degree. Intestine with chambers.
Reproductive system. Bursa long, accessory glands present. Conductive tissue pre-
sent or absent, copulatory area absent.
Coelomic system. Dorsal, ventral, marginal and testicular lacunae present. Main
and accessory communications present or absent.
Marine.
Austrobdella oosthuizeni A. Utevsky, sp. n. (fig. 1–3)
Ma t e r i a l. Holotype N 29; paratypes N 33 (on slides), 34, 35 (on slides) are in the Zoological
Museum of the National Academy of Science of Ukraine (Kyiv).
D i a gno s i s. Maximum body length, 9.7 mm, trachelosome subcylindrical, uro-
some flattened, anterior and posterior suckers well-developed, eyes and ocelli on suck-
ers and body absent; complete somite 6 (12) annulate; body unpigmented, semitrans-
parent; posterior crop caeca totally fused; ovisacs small, vagina long.
T yp e l o c a l i t y. Bloubergstrand, coastal waters, South
Africa.
E t ymo l o g y. Named in honour of Dr. J. H. Oosthuizen,
Department of Zoology, University of Pretoria, Pretoria, for his
many contributions to hirudinology.
External features (fig. 2, A, B). Small leeches (length with-
out suckers, 9.7 mm; width, 2.3 mm). Body short and wide
(length/width ratio, 4.2), distinctly divided into subcylindrical tra-
chelosome and flattened urosome with “shoulders”. Surface
smooth, unpigmented, semitransparent, without segmental ocelli.
Anterior sucker small (diameter smaller than maximum
body width), distinctly separated from trachelosome, eccentri-
cally attached. Surface smooth; eyes, ocelli, eyes-like spots
absent; mouth-pore centrally located.
Posterior sucker medium sized (diameter approximately
equal to maximum body width, and 1.5 times larger than diam-
eter of anterior sucker), centrally attached, directed anteriorly.
Surface smooth, ocelli absent.
Annulation of clitellum (fig. 2, B) indistinct, external copula-
tory area absent. Complete somite includes 6 double rings. Anus
separated by 2 annuli from posterior sucker.
Digestive system (fig. 2, C). Base of proboscis located at
ganglion 2 of ventral nerve cord. Oesophageal diverticula absent.
Crop with 5 large chambers enlarged from first to last. Posterior
crop caeca totally fused without fenestrae, lateral processes and
chambers absent. Intestine with 2 chambers bearing lateral pro-
cesses. Rectal dilatation located posterior to posterior crop caeca
Reproductive system (fig. 2, D, E). Five pairs of testisacs
present. Seminal reservoirs well-developed, forming some loops
between ganglia 7 and 8 of ventral nerve cord. Initial parts of
80 A. Yu. Utevsky
Fig. 1. Austrobdella oosthu-
izeni, holotype, dorsal view.
Ðèñ. 1. Austrobdella oosthui-
zeni, ãîëîòèï, äîðñàëüíî.
81A New Species of Marine Leeches…
Fig. 2. External and internal structure of the Austrobdella oosthuizeni: A — body shape; B — clitellum (ventral
view); C — digestive system (dorsal view); D — reproductive system without additional glandular mass (dorsal
view); E — lateral view of reproductive system (reconstruction from serial sections); Ag — accessory glandular
mass; Cb — copulatory bursa; Cp — common part of ejaculatory ducts; Cc — crop chambers; Cl — clitellum;
I — intestine; Ic — intestine chambers; Ip — initial part of ejaculatory duct; Os — ovisacs; P — proboscis;
Pec — posterior crop caeca; R — rectum; Sr — seminal reservoir; Tp — terminal part of ejaculatory duct;
Ts — testisacs; V — vagina.
Ðèñ. 2. Âíåøíåå è âíóòðåííåå ñòðîåíèå Austrobdella oosthuizeni: A — ôîðìà òåëà; B — ïîÿñîê (âåí-
òðàëüíî); C — ïèùåâàðèòåëüíàÿ ñèñòåìà (äîðñàëüíî); D — ïîëîâàÿ ñèñòåìà (äîðñàëüíî, ïðèäàòî÷íûå
æåëåçû íå ïîêàçàíû); E — ïîëîâàÿ ñèñòåìà (ëàòåðàëüíî, ðåêîíñòðóêöèÿ ïî ñåðèéíûì ñðåçàì); Ag —
ïðèäàòî÷íûå æåëåçû; Cb — êîïóëÿöèîííàÿ ñóìêà; Cp — îáùèé îòäåë ñåìÿèçâåðãàòåëüíûõ êàíàëîâ;
Cc — êàìåðû æåëóäêà; Cl — ïîÿñîê; I — óñâàèâàþùàÿ êèøêà; Ic — êàìåðû óñâàèâàþùåé êèøêè;
Ip — íà÷àëüíûå îòäåëû ñåìÿèçâåðãàòåëüíûõ êàíàëîâ; Os — ÿéöåâûå ìåøêè; P — õîáîòîê; Pec — ñëå-
ïûå ìåøêè; R — ðåêòóì; Sr — ñåìåííûå ðåçåðâóàðû; Tp — êîíöåâûå îòäåëû ñåìÿèçâåðãàòåëüíûõ
êàíàëîâ; Ts — ñåìåííûå ìåøêè; V — âëàãàëèùå.
ejaculatory ducts long, thin, loop-like, extending to ganglion 2 of ventral nerve cord.
Terminal parts long, wider than initial parts, located between ganglia 3 and 6. Common
part of ejaculatory ducts voluminous, muscular, located between ganglia 5 and 7 of ven-
tral nerve cord. Accessory glandular mass well-developed, located between ganglia 4
and 6, covering in part initial parts of ejaculatory ducts, terminal parts and common
part of ejaculatory ducts. Bursa long may be coiled and extended posterior to ganglion
7 of ventral nerve cord. Ovisacs small, asymmetrical; located between ganglia 9 and 11
of ventral nerve cord (or extended to 4th pare of testisacs). Vagina long, tube-like.
Conductive tissue and copulatory area absent.
Coelomic system (fig. 3). Consisting of dorsal, ventral, testicular and marginal
lacunae with muscular layer. Main and accessory communications absent. Dorsal and
marginal lacunae forming small dilatations in testicular region of somite.
Discussion
The species described here is assigned to the genus Austrobdella Badham, 1916
which includes four species: A. translucens Badham, 1916; A. anoculata Moore, 1940;
A. bilobata Ingram, 1957; A. californiana Burreson, 1977. Belonging of the new species
to the genus Austrobdella is confirmed by the distinct division of the body into subcylin-
drical trachelosome and flattened urosome with «shoulders»; 6-annular complete so-
mite; voluminous crop chambers and intestinal chambers; fusion of posterior crop
caeca; long copulatory bursa; presence of accessory glands; presence of marginal lacu-
nae. A. oosthuizeni differs little from most representatives of the genus in the length of
the body (A. translucens, 13 mm; A. anoculata, 6–8 mm; A. californiana, 15–35 mm),
but the leech is distinctly smaller than A. bilobata (35 mm).
A. oosthuizeni differs from A. translucens and A. californiana by the absence of eyes;
from A. translucens, A. bilobata, and A. californiana by the absence of oesophageal diver-
ticula; from all the species by the number of crop chambers (A. translucens, A. anocu-
lata, A. californiana have 6 chambers; A. bilobata has 12 chambers) and by the com-
plete fusion of posterior crop caeca without fenestrae; from A. translucens and A. biloba-
ta by the absence of the conductive tissue; from all the species by the very long vagina.
The considerable remoteness of localities of the new species and their parasitising
on different hosts confirm a specific status of the described leech: A. translucens
(Australia, East Antarctica) is parasitic on Sillago ciliata, Notothenia sp., and
Chaenocephalus sp.; the host of A. anoculata (Greenland) is unknown; A bilobata
82 A. Yu. Utevsky
Fig. 3. Model of lacunar system of the Austrobdella oosthuizeni: Gr — ganglion region; T — testisac region;
Cc — crop chamber; Cr — crop; Dl — dorsal lacuna; Dv — dorsal vessel; G — ganglia; LI — ateral lacuna;
Nc — ventral nerve cord; Ts — testisac; VI — ventral lacuna with ventral vessel.
Ðèñ. 3. Ìîäåëü ëàêóíàðíîé ñèñòåìû Austrobdella oosthuizeni: Gr — îáëàñòü ãàíãëèÿ; T — îáëàñòü ñå-
ìåííûõ ìåøêîâ; Cc — êàìåðà æåëóäêà; Cr — æåëóäîê; Dl — ñïèííàÿ ëàêóíà; Dv — ñïèííîé ñîñóä;
G — ãàíãëèé; LI — ëàòåðàëüíàÿ ëàêóíà; Nc — áðþøíàÿ íåðâíàÿ öåïî÷êà; Ts — ñåìåííîé ìåøîê;
VI — áðþøíàÿ ëàêóíà ñ áðþøíûì ñîñóäîì.
(Tasmania), on Rhombosolea tapirina; A. californiana (southern California–Pacific
Ocean), on Hippoglossina stomata, Pleuronichthis verticalis, P. decurrens, and Scorpaena
guttata; A. oosthuizeni (South Africa), on Jassus lalandii.
Finding of A. oosthuizeni on Jassus lalandii (Crustacea, Decapoda) suggests that
the described leech uses crustaceans as a substrate for cocoon deposition but feed on
the blood of fishes (Meyer, Barden, 1955), just as several other marine leeches do.
However it must be emphasized that Mysidobdella borealis (Johanson, 1899) and
Glyptonotobdella antarctica Sawyer et White, 1969 probably feed on their crustacean
hosts (Burreson, Alien, 1978; Janssen, 1993).
I would like to thank Dr. J. H. Oosthuizen, Department of Zoology, University of Pretoria, Pretoria
for providing the specimens.
Badham C. On an Ichthyobdellid parasitic on the Australian sand whiting (Sillago ciliata) // Qart. Journ.
Micr. Sci. — 1916. — 62, pt. 1, N 245. — P. 1–41.
Burreson E. M., Alien D. M. Morphology and biology of Mysidobdella borealis (Johansson)
comb. n. (Hirudinea: Piscicolidae) from mysids in the western north Atlantic // J. Parasitol. — 1978. —
64, N 6. — P. 1082–1091.
Ingram D. M. Some Tasmanian Hirudinea // Papers and Proceedings of the Royal Society of Tasmania. —
1957. — 91. — P. 191–232.
Janssen H. H. Morphology, egg cocoons, and transmission paths of the Antarctic leech Glyptonotobdella
antarctica Sawyer et White, 1969 (Hirudinea: Rhynchobdelliformes: Piscicolidae) // Polar Biol. —
1993. — 13. — P. 347–354.
Meyer M. C., Barden A. A. Leeches Symbiotic on Arthropoda, Especially Decapoda Crustacea //
Wassm. J. Biol. — 1955. — 13, N 2. — P. 297–311.
Moore J. P. Austrobdella anoculata, a new species of fish leech from Greenland // J. Wash. Acad. Sci. —
1940. — 30. — P. 520–524.
Moore J. P. The leeches (Hirudinea) in the collection of the Natal Museum // Ann. Natal Mus. — 1958. —
14. — P. 303–340.
Sawyer R. T. Leech Biology and Behaviour: in 3 vol. — Oxford : Clarendon Press, 1986.
83A New Species of Marine Leeches…
|
| id | nasplib_isofts_kiev_ua-123456789-3343 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0084-5604 |
| language | English |
| last_indexed | 2025-12-07T17:24:04Z |
| publishDate | 2004 |
| publisher | Інститут зоології ім. І. І. Шмальгаузена НАН України |
| record_format | dspace |
| spelling | Utevsky, A.Yu. 2009-07-07T08:40:04Z 2009-07-07T08:40:04Z 2004 A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa / A. Yu. Utevsky // Вестн. зоологии. — 2004. — Т. 38, № 5. — С. 79-83. — англ. 0084-5604 https://nasplib.isofts.kiev.ua/handle/123456789/3343 595.143(6–13) Описана морская рыбья пиявка Austrobdella oosthuizeni A. Utevsky, sp. n. из прибрежных вод Южной Африки. Экземпляры достигают длины 9,7 мм, трахелосома субцилиндрическая, уросома уплощенная без боковых пузырей; тело не пигментировано, полупрозрачное; глаза и глазки отсутствуют (у фиксированных экземпляров). Все экземпляры собраны с лобстера Jassus lalandii (Crustacea, Decapoda). The marine piscicolid leech Austrobdella oosthuizeni A. Utevsky, sp. n. from the coastal waters of South Africa is described and illustrated. The body is up to 9.7 mm long, trachelosome subcylindrical, urosome flattened without pulsatile vesicles; body unpigmented, semitransparent; eyes and ocelli absent (in fixed specimens). The specimens were collected on Jassus lalandii (Crustacea, Decapoda). en Інститут зоології ім. І. І. Шмальгаузена НАН України Краткие сообщения A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa Новый вид морских пиявок (Hirudinea, Piscicolidae) из прибрежных вод Южной Африки Article published earlier |
| spellingShingle | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa Utevsky, A.Yu. Краткие сообщения |
| title | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa |
| title_alt | Новый вид морских пиявок (Hirudinea, Piscicolidae) из прибрежных вод Южной Африки |
| title_full | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa |
| title_fullStr | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa |
| title_full_unstemmed | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa |
| title_short | A New Species of Marine Leeches (Hirudinea, Piscicolidae) from the Coastal Waters of South Africa |
| title_sort | new species of marine leeches (hirudinea, piscicolidae) from the coastal waters of south africa |
| topic | Краткие сообщения |
| topic_facet | Краткие сообщения |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/3343 |
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