Hermit Crab
Mostrando 13-22 de 22 artigos, teses e dissertações.
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13. Growth of the hermit crab Clibanarius vittatus (Bosc, 1802) (Crustacea, Anomura, Diogenidae) at São Vicente, São Paulo, Brazil
O presente estudo teve como objetivo analisar o crescimento de machos e fêmeas do ermitão Clibanarius vittatus (Bosc, 1802), da região de São Vicente, São Paulo, Brasil. Foram realizadas coletas mensais de maio/2001 a abril/2003, na Praia dos Pescadores em São Vicente. Os 2.501 animais capturados foram identificados, determinados quanto ao sexo e mensu
Brazilian Archives of Biology and Technology. Publicado em: 2008-06
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14. Bio-ecological aspects of the hermit crab Paguristes calliopsis (Crustacea, Diogenidae) from Anchieta Island, Brazil
Os estudos sobre a biologia dos ermitões no Atlântico sul ocidental são escassos considerando-se a biodiversidade local. O presente trabalhou caracterizou a população do ermitão Paguristes calliopsis Forest and Saint Laurent, 1968 quanto à distribuição de freqüência de tamanho dos indivíduos, ao sex-ratio, e a ocupação das conchas no ambiente n
Anais da Academia Brasileira de Ciências. Publicado em: 2006-09
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15. The influence of shell species and size on the shell selection pattern of Paguristes tortugae (Decapoda, Diogenidae) from Anchieta Island (Ubatuba, Brazil)
Shell selection by the hermit crab Paguristes tortugae Schmitt, 1933 from Anchieta Island (Brazil) was analyzed using the six most frequently occupied shell species in the field and taking into account the sexual condition of the individuals, the shell size and the shell species. The experiments were conducted under laboratory conditions and the shell specie
Iheringia. Série Zoologia. Publicado em: 30/12/2004
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16. Atração de Paguros criniticornis Dana, 1852 (Decapoda, Anomura, Paguridae) para eventos de predação simulada
Hermit crabs are decapods crustaceans that occupy empty gastropod shells to obtain protection against predators and desiccation. They must periodically obtain new shells because of crab growth and deterioration of shells. New shells are obtained by chance encounter of an empty shell, by shell exchange with another hermit crab, and by attending gastropod pred
Publicado em: 2003
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17. Population biology of the hermit crab Petrochirus diogenes (Linnaeus) (Crustacea, Decapoda) in Southern Brazil
The aim of this study was to provide information on the biology of a subtropical population ofthe hermit crab Petrochirus diogenes focusing size structure, sex ratio, reproductive period and morphometric relationships. Monthly samples were done between January and December 1995 at Armação of Itapocoroy, Penha, southern Brazil, using two over-trawls in dept
Revista Brasileira de Zoologia. Publicado em: 2002-12
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18. Hermit crab (Decapoda, Anomura) attraction to dead gastropod baits in an infralittoral algae bank
Ermitões utilizam conchas de gastrópodes para abrigo. Conchas novas e mais adequadas podem ser encontradas pelos ermitões pois estes são atraídos por substâncias químicas liberadas pelos tecidos de gastrópodes feridos ou mortos. A adequação, condição e tipo das conchas e a composição de espécies e o tamanho dos ermitões foram comparados entre
Brazilian Archives of Biology and Technology. Publicado em: 2002-06
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19. Padrão de ocupação e seleção de conchas pelo ermitão Paguristes tortugae SCHMITT, 1933 (Crustacea, Anomura) na Ilha Anchieta, Ubatuba, São Paulo. / Patterns of shell utilization and selection by the hermit crab Paguristes tortugae SCHMITT, 1933 (Crustacea, Anomura) from Anchieta Island, Ubatuba, São Paulo.
No presente trabalho caracterizou-se o padrão de utilização de conchas pelo ermitão Paguristes tortugae, habitante do infralitoral da Ilha Anchieta (Ubatuba), analisando-se comparativamente o padrão de seleção e de ocupação de conchas no ambiente natural e em laboratório. Para o estudo de ocupação de conchas no ambiente, os indivíduos foram cole
Publicado em: 2001
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20. Variation in per capita interaction strength: Thresholds due to nonlinear dynamics and nonequilibrium conditions
I measured the strength of interaction between a marine herbivore and its growing resource over a realistic range of absolute and relative abundances. The herbivores (hermit crabs: Pagurus spp.) have slow and/or weak functional and numerical responses to epiphytic diatoms (Isthmia nervosa), which show logistic growth in the absence of consumers. By isolating
The National Academy of Sciences.
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21. Cs2SO4 Gradients Containing Both Hg2+ and Ag+ Effect the Complete Separation of Satellite Deoxyribonucleic Acids Having Identical Densities in Neutral CsCl Gradients
A combination of both Ag+ and Hg2+ in Cs2SO4 effects the complete separation of two DNAs having identical densities in CsCl. Satellite DNAs of hermit crab, Pagurus pollicaris, and lobster, Homarus americanus, have been isolated by this means.
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22. Decision rules, energy metabolism and vigour of hermit-crab fights.
Aggressive interactions between animals are often settled by the use of repeated signals that reduce the risk of injury from combat but are expected to be costly. The accumulation of lactic acid and the depletion of energy stores may constrain activity rates during and after fights and thus represent significant costs of signalling. We tested this by analysi