First record of predation of a hatchling turtle by the Western tiger snake (Notechis scutatus occidentalis).

2021 ◽  
Author(s):  
D. C. Lettoof ◽  
A Santoro ◽  
C. VL. Swinstead ◽  
J. Cornelis
Keyword(s):  
Western Australia ◽  
Stomach Contents ◽  
First Record ◽  
Freshwater Turtles ◽  
Additional Pressure ◽  
Recorded Observation

ABSTRACT Snake-Turtle interactions have been rarely documented. We recorded a hatchling Chelodina oblonga within the stomach contents of a Western tiger snake (Notechis scutatus occidentalis). This is the first recorded observation of an interaction between snakes and hatchling freshwater turtles in Western Australia. Field based palpation failed to detect the hatchling, suggesting that without dissection, turtle hatchling predation by snakes more generally could be higher than commonly reported. Snake predation of hatchlings could be placing additional pressure on threatened populations of freshwater turtles in Australia, warranting further investigation.

scholarly journals First record of ‘climbing’ and ‘jumping’ by juvenile Galaxias truttaceus Valenciennes, 1846 (Galaxiidae) from south-western Australia

2014 ◽  
Vol 62 (2) ◽  
pp. 175 ◽  
Author(s):  
Paul G. Close ◽  
Tom J. Ryan ◽  
David L. Morgan ◽  
Stephen J. Beatty ◽  
Craig S. Lawrence
Keyword(s):  
Western Australia ◽  
Swimming Performance ◽  
First Record ◽  
Freshwater Fishes ◽  
Low Flow ◽  
Upstream Migration ◽  
Early Life Stages ◽  
Critically Endangered Species ◽  
Juvenile Stages ◽  
Australian Freshwater

Upstream migration of juvenile stages of temperate Australian amphidromous fish typically coincides with seasonally low river discharge when hydraulic (e.g. cascades) and physical (e.g. rock bars) barriers may be common. The ability to ‘climb’ or ‘jump’ may be expected to assist in negotiating low-flow barriers; however, it is presumed to be limited to a few native Australian freshwater fishes. Juvenile stages of Galaxias truttaceus Valenciennes, 1846 were observed ‘climbing’ and ‘jumping’ to successfully negotiate a low, vertical weir wall during their upstream recruitment migrations in south-western Australia. Based on this observation, we propose initial definitions for ‘climbing’ and ‘jumping’ to describe locomotory strategies employed by fishes to negotiate obstacles that would otherwise prevent free passage by normal swimming behaviour. Greater knowledge of the climbing, jumping and swimming performance, especially for small-bodied species and early life stages, will help improve the management of instream barriers for this critically endangered species and other freshwater fishes of southern Australia.

scholarly journals A new species of Drosera section Arachnopus (Droseraceae) from the western Kimberley, Australia, and amendments to the range and circumscription of Drosera finlaysoniana

Phytotaxa ◽  
2021 ◽  
Vol 501 (1) ◽  
pp. 56-84
Author(s):  
THILO KRUEGER ◽  
ANDREAS FLEISCHMANN
Keyword(s):  
New Species ◽  
Western Australia ◽  
First Record ◽  
The Philippines ◽  
Similar Species ◽  
Annual Species ◽  
A New Species ◽  
Made In

A new annual species of Drosera section Arachnopus, Drosera margaritacea, from the western Kimberley region (Western Australia) is described and illustrated, including detailed comparisons with the morphologically most similar species, D. finlaysoniana. The latter name is lectotypified here. The global range of D. finlaysoniana is provided, including a doubtful first record for Thailand, while the species, in contrast with statements made in some published references, does not occur in India, Laos, Cambodia and the Philippines. Additionally, the first record from Indonesia of the frequently misidentified D. aquatica is reported.

scholarly journals Spiroxys contortus (Rudolphi, 1819) and Hedruris orestiae (Moniez, 1889) in Argentine turtles

Check List ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 1993 ◽  
Author(s):  
Ezequiel Palumbo ◽  
Sofia Capasso ◽  
María Julia Cassano ◽  
Leandro Alcalde ◽  
Julia Inés Diaz
Keyword(s):  
South America ◽  
Host Record ◽  
First Record ◽  
Helminth Species ◽  
Freshwater Turtles ◽  
New Host ◽  
New Host Record

Knowledge of parasites in turtles is scarce, particularly with regard to freshwater turtles of South America. Here, we describe the association of Spiroxys contortus (Rudolphi, 1819)in Phrynops hilarii (Duméril & Bibron, 1835) and S. contortus and Hedruris orestiae (Moniez, 1889) in Hydromedusa tectifera (Cope, 1870). The presence of S. contortus in P. hilarii represents a new host record and also the southernmost geographic record for this species. More interestingly, the presence of H. orestiae in H. tectifera represents the first record of this helminth species from a reptilian host. 

scholarly journals Discovery of a host fish for glochidia of Velesunio angasi (Sowerby, 1867) (Bivalvia:Unionoida:Hyriidae) from the Fortescue River, Pilbara, Western Australia

2010 ◽  
Vol 58 (4) ◽  
pp. 263 ◽  
Author(s):  
Michael W. Klunzinger ◽  
David L. Morgan ◽  
Alan J. Lymbery ◽  
Brendan C. Ebner ◽  
Stephen J. Beatty ◽  
...  
Keyword(s):  
Light Microscopy ◽  
Western Australia ◽  
Freshwater Mussels ◽  
First Record ◽  
Freshwater Fishes ◽  
Host Fish ◽  
Mean Intensity ◽  
Size And Shape ◽  
Eleven Species

Freshwater fishes are the most common hosts of the glochidia (parasitic larvae) of freshwater mussels (Bivalvia: Unionoida: Unionoidea). Velesunio angasi (Sowerby, 1867) (Hyriidae), is the only known hyriid species recorded from the Fortescue River in the Pilbara region of Western Australia. Eleven species of fish (n = 516) were captured from pools of the Fortescue River in June 2010. Small, white, bladder-like cysts were observed on Neosilurus hyrtlii Steindachner, 1867, though not on any of the remaining 10 species examined. Light microscopy of sectioned cysts revealed that they contained glochidia that were of similar size and shape to those of V. angasi. Glochidia were found on 73.2% of 168 N. hyrtlii examined, with a mean intensity of 3.3 cysts per infested fish. Prevalence was significantly greater on smaller fish (P < 0.01); however, no relationship between size and intensity of infestation was observed. This represents the first record of glochidia infestation on fish from the Pilbara region.

The first record of a Maastrichtian ammonite from the Perth Basin, Western Australia, and its biostratigraphical significance

1988 ◽  
Vol 12 (3) ◽  
pp. 163-168 ◽  
Author(s):  
Kenneth J. McNamara ◽  
John P. Rexilius ◽  
Neil G. Marshall ◽  
Robert A. Henderson
Keyword(s):  
Western Australia ◽  
First Record

First record of Thermosbaenacea (Crustacea) from the Southern Hemisphere: a new species from a cave in tropical Western Australia

1992 ◽  
Vol 6 (3) ◽  
pp. 719 ◽  
Author(s):  
GCB Poore ◽  
WF Humphreys
Keyword(s):  
New Species ◽  
Southern Hemisphere ◽  
Western Australia ◽  
West Indies ◽  
First Record ◽  
The West ◽  
Saline Waters ◽  
First Time ◽  
Cave Habitat ◽  
A New Species

The crustacean order Thermosbaenacea is reported for the first time from the Southern Hemisphere, from almost fresh water in a cave habitat in tropical Western Australia. Halosbaena tulki, sp. nov. belongs to a genus previously known only from saline waters in the West Indies, Columbia and Canary Is. The discovery is consistent with a very ancient origin of the order and distribution of the genus by plate movements following the breakup of Pangaea.

Comparison of the Diet of Feral Cats From Rural and Pastoral Western Australia.

1996 ◽  
Vol 23 (4) ◽  
pp. 475 ◽  
Author(s):  
GR Martin ◽  
LE Twigg ◽  
DJ Robinson
Keyword(s):  
Western Australia ◽  
Management Strategies ◽  
Stomach Contents ◽  
Important Food ◽  
Food Category ◽  
Feral Cats ◽  
Food Items ◽  
Dietary Breadth ◽  
Index Of Relative Importance ◽  
Future Management

The stomach contents of 93 cats from rural and pastoral Western Australia were compared using the number and biomass of food items, and by calculating an Index of Relative Importance for each food category. Species of small native mammals (e.g. dasyurids, rodents) and geckos were significantly (P < 0.03) more prevalent in the diet of pastoral cats, and rural cats consumed greater (P < 0.03) quantities of introduced rodents and rabbits. Several other groups of native animals (e.g. snakes, skinks, agamids) were also more prevalent in the stomachs of pastoral cats (P < 0.10). Birds and orthopterans were important food items to cats from both habitats. There was reasonable dietary overlap (mean = 0.71) between the cats from both habitats, but the dietary breadth of the pastoral cats (mean = 0.44) was two-fold greater than that of the rural cats (mean = 0.21). These findings are compared with previous studies, and are discussed with respect to possible implications for future management strategies for feral cats.

Food and feeding habits of the blue shark Prionace glauca caught off Ensenada, Baja California, Mexico, with a review on its feeding

2010 ◽  
Vol 90 (5) ◽  
pp. 977-994 ◽  
Author(s):  
Unai Markaida ◽  
Oscar Sosa-Nishizaki
Keyword(s):  
Baja California ◽  
Feeding Habits ◽  
Seasonal Pattern ◽  
Stomach Contents ◽  
First Record ◽  
Blue Shark ◽  
Prionace Glauca ◽  
Giant Squid ◽  
Food And Feeding ◽  
Vampyroteuthis Infernalis

Stomach contents of 893 blue shark (Prionace glauca) caught off Ensenada, Todos Santos Bay, Baja California, from 1995 to 1997 were analysed. 614 had identifiable food remains. A large variety of pelagic cephalopods occurred in 55.5% of all stomachs and accounted for 46.2% of all prey and 84% by estimated weight of stomach contents. The most abundant (17%) and frequent (32%) was Histioteuthis heteropsis and the most important by estimated weight (22%) was ‘Gonatus californiensis’. Argonauta spp. and Vampyroteuthis infernalis were also abundant prey. A pair of beaks of giant squid Architeuthis sp. constitutes the first record for Mexican waters. Feeding habits and the probability of scavenging on mesopelagic cephalopods is discussed. The single most abundant prey was the pelagic, red crab Pleuroncodes planipes (41.7%). Other prey included teleost fish, amniotes and floating items. Diet varied greatly between months with no clear seasonal pattern. Tiny diet differences due to shark size or sex were inconclusive. A thorough review of studies on blue sharks stomach contents analysis is given. Blue shark feed on a large variety of passive pelagic prey, mainly mesopelagic cephalopods, that could be preyed upon as well as scavenged. Depletion of this predator due to overfishing may be leading to unknown cascading top-down effects in the mesopelagic realm.

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