Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Neotropical ichthyology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300011 |
Resumo: | Pipefish species are poorly known representatives of the family Syngnathidae, which have been increasingly threatened by anthropogenic activities. We describe the diet composition and feeding strategy of southern pipefish Syngnathus folletti inhabiting a Widgeon grass (Ruppia maritima L.) bed in the estuarine zone of Patos Lagoon, southern Brazil. We also investigated whether mouth gape affected the size of prey items consumed and based on indirect evidence, we suggest possible pipefish foraging movements within the bed. Individuals were collected from December 1994 to March 1995 in a Ruppia maritima bed located in the Patos Lagoon Estuary during day and night periods. We analyzed the stomach contents of 108 individuals (54 females and 54 males). Both genders seemed to be diurnal carnivores with diets composed primarily of copepods and isopods. Mixed feeding strategies were evident with varying degrees of specialization on different prey types. Females had a more diverse diet both in prey richness as in prey size range, whereas males fed primarily on smaller prey, the isopod U. peterseni and copepods. Gender-based diet differences suggest that females may be more mobile and active inside the Widgeon grass bed than males. The average size range of the two dominant prey items fitted well to the pipefish mouth gape (0.4 to 1.4mm). However, a few female individuals were able to consume prey three times larger than their maximum gape. A diagram of prey microhabitat suggested that both genders browse and capture invertebrates over the entire vegetated substrate provided by the Widgeon grass bed. |
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Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, BrazilSyngnathidaeRuppia maritimafeeding ecologysize-biased feedingprey sizePipefish species are poorly known representatives of the family Syngnathidae, which have been increasingly threatened by anthropogenic activities. We describe the diet composition and feeding strategy of southern pipefish Syngnathus folletti inhabiting a Widgeon grass (Ruppia maritima L.) bed in the estuarine zone of Patos Lagoon, southern Brazil. We also investigated whether mouth gape affected the size of prey items consumed and based on indirect evidence, we suggest possible pipefish foraging movements within the bed. Individuals were collected from December 1994 to March 1995 in a Ruppia maritima bed located in the Patos Lagoon Estuary during day and night periods. We analyzed the stomach contents of 108 individuals (54 females and 54 males). Both genders seemed to be diurnal carnivores with diets composed primarily of copepods and isopods. Mixed feeding strategies were evident with varying degrees of specialization on different prey types. Females had a more diverse diet both in prey richness as in prey size range, whereas males fed primarily on smaller prey, the isopod U. peterseni and copepods. Gender-based diet differences suggest that females may be more mobile and active inside the Widgeon grass bed than males. The average size range of the two dominant prey items fitted well to the pipefish mouth gape (0.4 to 1.4mm). However, a few female individuals were able to consume prey three times larger than their maximum gape. A diagram of prey microhabitat suggested that both genders browse and capture invertebrates over the entire vegetated substrate provided by the Widgeon grass bed.Sociedade Brasileira de Ictiologia2005-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300011Neotropical Ichthyology v.3 n.3 2005reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/S1679-62252005000300011info:eu-repo/semantics/openAccessGarcia,Alexandre M.Geraldi,Ricardo M.Vieira,João P.eng2007-12-12T00:00:00Zoai:scielo:S1679-62252005000300011Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2007-12-12T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false |
dc.title.none.fl_str_mv |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil |
title |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil |
spellingShingle |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil Garcia,Alexandre M. Syngnathidae Ruppia maritima feeding ecology size-biased feeding prey size |
title_short |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil |
title_full |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil |
title_fullStr |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil |
title_full_unstemmed |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil |
title_sort |
Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil |
author |
Garcia,Alexandre M. |
author_facet |
Garcia,Alexandre M. Geraldi,Ricardo M. Vieira,João P. |
author_role |
author |
author2 |
Geraldi,Ricardo M. Vieira,João P. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Garcia,Alexandre M. Geraldi,Ricardo M. Vieira,João P. |
dc.subject.por.fl_str_mv |
Syngnathidae Ruppia maritima feeding ecology size-biased feeding prey size |
topic |
Syngnathidae Ruppia maritima feeding ecology size-biased feeding prey size |
description |
Pipefish species are poorly known representatives of the family Syngnathidae, which have been increasingly threatened by anthropogenic activities. We describe the diet composition and feeding strategy of southern pipefish Syngnathus folletti inhabiting a Widgeon grass (Ruppia maritima L.) bed in the estuarine zone of Patos Lagoon, southern Brazil. We also investigated whether mouth gape affected the size of prey items consumed and based on indirect evidence, we suggest possible pipefish foraging movements within the bed. Individuals were collected from December 1994 to March 1995 in a Ruppia maritima bed located in the Patos Lagoon Estuary during day and night periods. We analyzed the stomach contents of 108 individuals (54 females and 54 males). Both genders seemed to be diurnal carnivores with diets composed primarily of copepods and isopods. Mixed feeding strategies were evident with varying degrees of specialization on different prey types. Females had a more diverse diet both in prey richness as in prey size range, whereas males fed primarily on smaller prey, the isopod U. peterseni and copepods. Gender-based diet differences suggest that females may be more mobile and active inside the Widgeon grass bed than males. The average size range of the two dominant prey items fitted well to the pipefish mouth gape (0.4 to 1.4mm). However, a few female individuals were able to consume prey three times larger than their maximum gape. A diagram of prey microhabitat suggested that both genders browse and capture invertebrates over the entire vegetated substrate provided by the Widgeon grass bed. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1679-62252005000300011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
dc.source.none.fl_str_mv |
Neotropical Ichthyology v.3 n.3 2005 reponame:Neotropical ichthyology (Online) instname:Sociedade Brasileira de Ictiologia (SBI) instacron:SBI |
instname_str |
Sociedade Brasileira de Ictiologia (SBI) |
instacron_str |
SBI |
institution |
SBI |
reponame_str |
Neotropical ichthyology (Online) |
collection |
Neotropical ichthyology (Online) |
repository.name.fl_str_mv |
Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI) |
repository.mail.fl_str_mv |
||neoichth@nupelia.uem.br |
_version_ |
1752122177862238208 |