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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Ethogram Analysis Reveals New Body Patterning Behavior of the Tropical Arrow Squid Doryteuthis plei off the Sao Paulo Coast

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Autor(es):
Postuma, Felippe A. [1] ; Gasalla, Maria A. [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Oceanog Inst, Dept Biol Oceanog, Fisheries Ecosyst Lab LabPesq, BR-05508090 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: BIOLOGICAL BULLETIN; v. 229, n. 2, p. 143-159, OCT 1 2015.
Citações Web of Science: 3
Resumo

Squids can express several body patterns, aided by a variety of visual signals that are produced by chromatophore organs. However, for several squid species, body patterning behavior during reproductive activity is still not completely understood. For example, what are the specific patterning changes and other visual signals, how do they appear, and how long do they last? To test the hypothesis that distinct chromatic components appear at different durations on the skin of the tropical arrow squid Doryteuthis plei in the Southern Hemisphere, we identified and described its body patterning behavior. Specimen squids were obtained from off the South Brazil Bight, near the coast of the Sao Paulo shelf. Animals were maintained and monitored in circular tanks for 62 d over six observation periods, from 2011 through 2013. An ethogram was constructed showing 19 chromatic, 5 locomotor, and 12 postural components, or body patterns, associated with reproductive behavior. New chromatic components (i.e., those not yet reported in the North Atlantic D. plei species), particularly those linked to female sexual maturity, were observed. A postural component, the ``J-Posture,{''} linked to defenses and alarm, also was noted. The average time spent for ``light{''} components was 32 s. The corresponding ``dark{''} components had an average duration of 28 s. Females displayed the chromatic components related to calm behavior longer than males. However, males appeared to be more dedicated to disputes over resources, and used rapid, miscellaneous visual signaling. In conclusion, new basic types of body patterns are described for D. plei. The repertoire of chromatic components reported in the ethogram is, to our knowledge, the first record for D. plei of the Southern Hemisphere. (AU)

Processo FAPESP: 10/50183-6 - A lula (Cephalopoda: Loliginidae) como recurso da pesca no litoral norte do estado de São Paulo: dinâmica populacional, oceanografia pesqueira e a dimensão humana associada
Beneficiário:Maria de Los Angeles Gasalla
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Regular