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Wyświetlanie 1-8 z 8
Tytuł:
Patterns of drilling predation of cassid gastropods preying on echinoids from the Middle Miocene of Poland
Autorzy:
Zlotnik, M
Ceranka, T.
Powiązania:
https://bibliotekanauki.pl/articles/22346.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
gastropod
Miocene
drilling predation
drill hole
cassid gastropod
Polska
Cassidae
Middle Miocene
echinoid
predatory behaviour
paleontology
Opis:
Test−drilling predation by cassid gastropods on minute clypeasteroid echinoids has been studied in the fossil assemblage of the Heterostegina Sands (middle Miocene, Holy Cross Mountains, Poland). The analysed prey, collected from two sublithofacies of the Heterostegina Sands (coarse−grained Heterostegina Sands and fine−grained Heterostegina Sands), represent three species of Echinocyamus (E. linearis, E. pusillus and E. pseudopusillus). The drill holes were produced presumably by one cassid species, Semicassis miolaevigata. The investigation showed that drilling predation intensities varied among the prey species. Within both fine− and coarse−grained sands, E. linearis was drilled more frequently than E. pusillus. An intermediate value of drilling predation was recognised for E. pseudopusillus. The intensities of drilling predation recognised for some of the prey species (E. pusillus) varied also between (but never within) the sublithofacies. Drilling predation was both size− and site−selective. Larger individuals of E. linearis and E. pusillus were attacked more frequently and the aboral side of the test of all Echinocyamus species was drilled preferentially. An extremely high concentration of drill holes was observed in the apical disc and petals. Results obtained for the most abundant prey (E. linearis) indicate that the predatory behaviour of large cassids was somewhat different from those typical of small cassids. Large cassids drilled and consumed their prey almost always individually, whereas small cassids sometimes preyed upon the urchins in a group. Large cassids displayed also a higher site−selectivity. They more frequently drilled in the petals and apical disc. The patterns of drilling predation were most likely controlled by the potential energetic value of prey (measured by the internal volume/test thickness ratio), prey and predator mobility, prey mode of life, thickness and porosity of the prey's tests, as well as by the proportions between the size of the prey and size of the predator. The results suggest that the mode of life of the prey and its test structure can influence the drill hole morphology.
Źródło:
Acta Palaeontologica Polonica; 2005, 50, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new species of Miocene terrestrial gastropod Gastrocopta from Poland and the validity of Pupa [Vertigo] suevica
Autorzy:
Stworzewicz, E
Prisyazhnyuk, V.A.
Powiązania:
https://bibliotekanauki.pl/articles/20509.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Miocene
gastropod
Pupa suevica
Polska
Pupa
Gastrocopta sandbergeri
Belchatow
Gastrocopta
Gastropoda
terrestrial gastropod
new species
Pupilloidea
paleontology
Opis:
We describe Gastrocopta sandbergeri sp. nov. from the Miocene brown coal deposits of the open−cast mine Bełchatów (central Poland) and identify it as conspecific with Pupa (Vertigo) suevica Sandberger, 1875 (nomen nudum) from the Miocene of Steinheim. The new name “sandbergeri” has been introduced in substitution because Sandberger’s name “suevica” has been later proposed again for a valid species Gastrocopta (Albinula) suevica by Boettger (1889). We could not use the name “minor” proposed by Miller (1900) as form of Pupa (Leucochilus) suevica because it is preoccupied by another Gastrocopta species: Bifidaria ashmuni f. minor Sterki, 1898 [= Gastrocopta ashmuni (Sterki, 1898)]. In consequence Sandberger’s Pupa (Vertigo) suevica is recognized as the senior synonym of Gastrocopta sandbergeri sp. nov. The new species is most similar to Gastrocopta nouletiana (Dupuy, 1850) but differs in having smaller and always slender shell, less convex whorls, much weaker crest on the body whorl (or even absent) and generally rather weakly developed teeth (6–7) in the aperture.
Źródło:
Acta Palaeontologica Polonica; 2006, 51, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Middle Miocene conoidean gastropods from western Ukraine (Paratethys): Integrative taxonomy, palaeoclimatogical and palaeobiogeographical implications
Autorzy:
Scarponi, D.
Della Bella, G.
Dell’Angelo, B.
Huntley, J.W.
Sosso, M.
Powiązania:
https://bibliotekanauki.pl/articles/21105.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Middle Miocene
Miocene
conoidean gastropod
gastropod
Ukraine
Paratethys area
taxonomy
paleoclimatology
paleobiogeography
Gastropoda
Conoidea
climatic transition
Opis:
The late Badenian (early Serravallian) conoideans from the Pidhirtsi Beds of western Ukraine (central Paratethys) have been investigated by means of a comprehensive and easy-to-perform morphometric approach, allowing the characterisation of eleven species, of which seven are new to science: Mangelia angulicosta sp. nov., M. larga sp. nov., M. pseudorugulosa sp. nov., M. odovychenae sp. nov., Bela varovtsiana sp. nov., Bela? robusta sp. nov., Pyrgocythara turrispiralata sp. nov. Additionally we also identified Raphitoma cf. R. ringicula, Andonia sp. aff. A. transsylvanica, Teretia cf. T. turritelloides, and Haedropleura sp. aff. H. septangularis. The relative high number of new species documented, relative to the total previously known from this stratigraphic interval, is interpreted as resulting mainly from combined methodological (dearth of taxonomic studies on Ukrainian conoideans) and environmental (high degree of habitat fragmentation in reef setting) factors. The conoideans documented herein add important information regarding palaeoclimaticalogical and palaeobiogeographical interpretations of the Serravallian Paratethys. The conoideans display strong affinity at the species level and complete overlap at the genus level with Neogene Proto-Mediterranean−Atlantic conoideans, thereby challenging the interpretation of late Badenian Paratethyan macrofaunal assemblage endemism. The lack of typical warm-water indicators (e.g., Conidae, Clavatulidae, or Pseudomelatomidae) within the studied material supports the interpretation that the fauna thrived during the late phase and/or soon after the Middle Miocene Climatic Transition (14.2−13.8 Ma).
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early ontogeny and palaeoecology of the Mid-Miocene rissoid gastropods of the Central Paratethys
Autorzy:
Kowalke, T
Harzhauser, M.
Powiązania:
https://bibliotekanauki.pl/articles/21635.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Miocene
gastropod
Mohrensternia pfaffstaettensis
morphology
embryonic shell
Sarmatian
Mohrensternia hollabrunnensis
Gastropoda
ontogenesis
Caenogastropoda
rissoid gastropod
Badenian
paleoecology
Rissooidea
Littorinimorpha
Opis:
Twenty−six species of Rissoidae (Caenogastropoda: Littorinimorpha: Rissooidea) are described from the Badenian and Early Sarmatian of 14 localities in Austria and the Czech Republic (Molasse Basin, Styrian Basin, Vienna Basin) and from the Badenian of Coştei (Romania). For the first time, the early ontogenetic skeletal characters of these gastropods are described. Based on these features an indirect larval development with a planktotrophic veliger could be reconstructed for all investigated Mid−Miocene species. The status of Mohrensterniinae as a subfamily of the Rissoidae is confirmed by the morphology of the low conical protoconch, consisting of a fine spirally sculptured embryonic shell and a larval shell which is smooth except for growth lines. Transitions from embryonic shells to larval shells and from larval shells to teleoconchs are slightly thickened and indistinct. Whilst representatives of the subfamily Rissoinae characterise the marine Badenian assemblages, Mohrensterniinae predominate the Early Sarmatian faunas. We hypothesize that this take−over by the Mohrensterniinae was triggered by changes in the water chemistry towards polyhaline conditions. Consequently, the shift towards hypersaline conditions in the Late Sarmatian is mirrored by the abrupt decline of the subfamily. Four new species Rissoa costeiensis (Rissoinae) from the Badenian and Mohrensternia hollabrunnensis, Mohrensternia pfaffstaettensis, and Mohrensternia waldhofensis (Mohrensterniinae) from the Early Sarmatian are introduced.
Źródło:
Acta Palaeontologica Polonica; 2004, 49, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new fossil provannid gastropod from Miocene hydrocarbon seep deposits, East Coast Basin, North Island, New Zealand
Autorzy:
Saether, K P
Little, C.T.S.
Campbell, K.A.
Powiązania:
https://bibliotekanauki.pl/articles/20492.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
new fossil
fossil
paleontology
provannid gastropod
gastropod
Miocene
hydrocarbon seep deposit
East Coast Basin
North Island
New Zealand
Mollusca
Gastropoda
Provannidae
Provanna
Opis:
Provanna marshallisp. nov. is described from Early to Middle Miocene−age fossil hydrocarbon seep localities in the East Coast Basin, North Island, New Zealand, adding to 18 modern and three fossil species of the genus described. Modern species are well represented at hydrothermal vent sites as well as at hydrocarbon seeps and on other organic substrates in the deep sea, including sunken wood and whale falls. Described fossil Provanna species have been almost exclusively reported from hydrocarbon seep deposits, with a few reports of suspected fossil specimens of the genus from other chemosynthetic environments such as sunken wood and large vertebrate (whale and plesiosaurid) carcasses, and the oldest occurrences are dated to the Middle Cenomanian (early Late Cretaceous). The New Zealand fossil species is the most variable species of the genus described to date, and its shell microstructure is reported and found to be comparable to the fossil species Provanna antiqua and some modern species of the genus.
Źródło:
Acta Palaeontologica Polonica; 2010, 55, 3; 507-517
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Traces of cassid snails predation upon the echinoids from the Middle Miocene of Poland
Autorzy:
Ceranka, T
Zlotnik, M.
Powiązania:
https://bibliotekanauki.pl/articles/21308.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
gastropod
Miocene
Polska
Cassidae
morphology
identification
predation
fossil echinoid
Middle Miocene
echinoid
population structure
snail
paleontology
Opis:
Drill holes on tests of Echinocyamus linearis from the Middle Miocene Korytnica Basin represent the first well documented fossil record of cassid predation from Poland. These traces complement the ecological information on the size and structure of cassid populations recorded by body fossils. The high number of drill holes recognised from the Heterostegina Sands, the uppermost part of the Korytnica depositional sequence, indicates the occurrence of a large cassid population during the late stage of development of the Korytnica Basin. The small size of most of the drill holes indicates that juvenile gastropods of the family Cassidae, which are not preserved in the fossil record of the investigated area, were also present in the cassid populations.
Źródło:
Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Size-related changes in predatory behaviour of naticid gastropods from the Middle Miocene Korytnica Clays, Poland
Autorzy:
Zlotnik, M
Powiązania:
https://bibliotekanauki.pl/articles/22130.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Natica tigrina
gastropod
Miocene
drill hole
shell
Polska
Naticidae
predatory behaviour
bivalve
Corbula gibba
predation
Middle Miocene
mollusc
Hinia restitutiana
Corbulidae
Holy Cross Mountains
paleontology
paleozoology
Opis:
The analysis of shell-drilling predation by naticid gastropods on molluscs from the Korytnica Clays (Middle Miocene, Holy Cross Mountains, Central Poland) has focused on the bivalve Corbula gibba and gastropods Natica tigrina and Hinia restitutiana. The results indicate that predatory behaviour of naticids varies depending on the size of the predator. When drilling corbulids, large naticids displayed higher site-selectivity than smaller naticids. Also, large naticids drilled energetically attractive prey (Hinia restitutiana and Natica tigrina) more frequently than small naticids. Preferential drilling displayed by large naticids from the Korytnica Clays increases the net energy gain for the predator and in result allows it to drill more effectively.
Przedstawiono analizę rozkładu drążeń Naticidae na muszlach małża Corbula gibba (Olivi, 1792) oraz ślimaków klinia restitutiana (Fontannes, 1879) i Natica tigrina Röding, 1789 pochodzących ze środkowomioceńskich iłów korytnickich. Wykazano, że drapieżnicze zachowania Naticidae były uzależnione od wielkości drapieżcy. Duże Naticidae drążyły głównie w środkowobrzusznym obszarze prawej skorupki C. gibba. Drążenia małych naticidów są zaś na tej skorupce rozmieszczone mniej lub bardziej przypadkowo (patrz Fig. 1A, C oraz porównaj fqLC z fqsc w Tabeli l ). Ponadto, małe Naticidae drążyły na skorupce lewej częściej niż duże (patrz Fig. I A—D oraz porównaj fqLL z fqsL w Tabeli 1). Wielkość drapieżcy miała również wpływ na wybór gatunku ofiary. Duże Naticidae znacznie częściej niż małe atakowały H. restitutiana i N. tigrina (Fig. 2A, B), natomiast małe Naticidae częściej niż duże atakowały C. gibba (patrz Fig. 1A—D oraz porównaj sumę NLR i NLL z NSR i NSL w Tabeli l). Wydaje się, że sposób umiejscawiania drążenia oraz wybór gatunku ofiary dokonywany przez duże ślimaki z iłów korytnickich mogły znacząco wpływać na zwiększenie efektywności polowania — prawa skorupka C. gibba jest bowiem w rejonie środkowobrzusznym najcieńsza. Drapieżnik atakujący ten obszar muszli potrzebował więc mniej czasu na jej przewiercenie. H. restitutiana i N. tigrina stanowiły zaś, ze względu na swoje rozmiary i budowę anatomiczną (duża mięsista noga), potencjalnie obfitsze źródło pożywienia niż C. gibba.
Źródło:
Acta Palaeontologica Polonica; 2001, 46, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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