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Jorge M.s. Gonçalves - One of the best experts on this subject based on the ideXlab platform.
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Feeding habits of the deep-snouted pipefish Syngnathus typhle in a temperate coastal lagoon
Estuarine Coastal and Shelf Science, 2007Co-Authors: Frederico Oliveira, Karim Erzini, Jorge M.s. GonçalvesAbstract:Abstract Feeding habits of Syngnathus typhle were determined based on monthly sampling during experimental fishing in a coastal lagoon (Ria Formosa, South Portugal) from April 2001 to May 2002. The gut contents of 856 individuals were analysed and quantified with numerical and gravimetric methods, as well as with some complementary indices and measures (vacuity, fullness and relative importance). In this study, this species fed mainly on Copepoda, Mysidacea, small caridean grass shrimps (Hippolytidae and Palaemonidae) and small fishes (Gobiidae) and to a lesser degree on other small invertebrates. No significant differences were found between the diets of males and females. However, significant differences in the fullness indexes of both sexes were observed during the reproductive period. Significant differences in the diet among seasons were also verified but no seasonal trends were discovered. Snout length showed a linear increase with growth while mouth area and total length displayed an allometric relation. Mouth shape varied between an ellipse and an almost perfect circle. The increase in mouth area and snout length as S. typhle grows contributed to the observed ontogenic diet shift with specimens smaller than 10 cm feeding almost exclusively on Copepoda, medium sized specimens feeding mainly on Hippolytidae and Mysidacea, while larger specimens preyed on Hippolytidae, Palaemonidae and Gobiidae. Prey size generally increased with size of S. typhle .
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Feeding habits of the deep-snouted pipefish Syngnathus typhle in a temperate coastal lagoon
Estuarine Coastal and Shelf Science, 2007Co-Authors: Frederico Oliveira, Karim Erzini, Jorge M.s. GonçalvesAbstract:Feeding habits of Syngnathus typhle were determined based on monthly sampling during experimental fishing in a coastal lagoon (Ria Formosa, South Portugal) from April 2004 to May 2002. The gut contents of 856 individuals were analysed and quantified with numerical and gravimetric methods, as well as with some complementary indices and measures (vacuity, fullness and relative importance). In this study, this species fed mainly on Copepoda, Mysidacea, small caridean grass shrimps (Hippolytidae and Palaemonidae) and small fishes (Gobiidae) and to a lesser degree on other small invertebrates. No significant differences were found between the diets of males and females. However, significant differences in the fullness indexes of both sexes were observed during the reproductive period. Significant differences in the diet among seasons were also verified but no seasonal trends were discovered. Snout length showed a linear increase with growth while mouth area and total length displayed an allometric relation. Mouth shape varied between an ellipse and an almost perfect circle. The increase in mouth area and snout length as S. typhle grows contributed to the observed ontogenic diet shift with specimens smaller than 10 cm feeding almost exclusively on Copepoda, medium sized specimens feeding mainly on Hippolytidae and Mysidacea, while larger specimens preyed on Hippolytidae, Palaemonidae and Gobiidae. Prey size generally increased with size of S. typhle. (c) 2007 Elsevier Ltd. All rights reserved
Frederico Oliveira - One of the best experts on this subject based on the ideXlab platform.
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Feeding habits of the deep-snouted pipefish Syngnathus typhle in a temperate coastal lagoon
Estuarine Coastal and Shelf Science, 2007Co-Authors: Frederico Oliveira, Karim Erzini, Jorge M.s. GonçalvesAbstract:Abstract Feeding habits of Syngnathus typhle were determined based on monthly sampling during experimental fishing in a coastal lagoon (Ria Formosa, South Portugal) from April 2001 to May 2002. The gut contents of 856 individuals were analysed and quantified with numerical and gravimetric methods, as well as with some complementary indices and measures (vacuity, fullness and relative importance). In this study, this species fed mainly on Copepoda, Mysidacea, small caridean grass shrimps (Hippolytidae and Palaemonidae) and small fishes (Gobiidae) and to a lesser degree on other small invertebrates. No significant differences were found between the diets of males and females. However, significant differences in the fullness indexes of both sexes were observed during the reproductive period. Significant differences in the diet among seasons were also verified but no seasonal trends were discovered. Snout length showed a linear increase with growth while mouth area and total length displayed an allometric relation. Mouth shape varied between an ellipse and an almost perfect circle. The increase in mouth area and snout length as S. typhle grows contributed to the observed ontogenic diet shift with specimens smaller than 10 cm feeding almost exclusively on Copepoda, medium sized specimens feeding mainly on Hippolytidae and Mysidacea, while larger specimens preyed on Hippolytidae, Palaemonidae and Gobiidae. Prey size generally increased with size of S. typhle .
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Feeding habits of the deep-snouted pipefish Syngnathus typhle in a temperate coastal lagoon
Estuarine Coastal and Shelf Science, 2007Co-Authors: Frederico Oliveira, Karim Erzini, Jorge M.s. GonçalvesAbstract:Feeding habits of Syngnathus typhle were determined based on monthly sampling during experimental fishing in a coastal lagoon (Ria Formosa, South Portugal) from April 2004 to May 2002. The gut contents of 856 individuals were analysed and quantified with numerical and gravimetric methods, as well as with some complementary indices and measures (vacuity, fullness and relative importance). In this study, this species fed mainly on Copepoda, Mysidacea, small caridean grass shrimps (Hippolytidae and Palaemonidae) and small fishes (Gobiidae) and to a lesser degree on other small invertebrates. No significant differences were found between the diets of males and females. However, significant differences in the fullness indexes of both sexes were observed during the reproductive period. Significant differences in the diet among seasons were also verified but no seasonal trends were discovered. Snout length showed a linear increase with growth while mouth area and total length displayed an allometric relation. Mouth shape varied between an ellipse and an almost perfect circle. The increase in mouth area and snout length as S. typhle grows contributed to the observed ontogenic diet shift with specimens smaller than 10 cm feeding almost exclusively on Copepoda, medium sized specimens feeding mainly on Hippolytidae and Mysidacea, while larger specimens preyed on Hippolytidae, Palaemonidae and Gobiidae. Prey size generally increased with size of S. typhle. (c) 2007 Elsevier Ltd. All rights reserved
Karim Erzini - One of the best experts on this subject based on the ideXlab platform.
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Feeding habits of the deep-snouted pipefish Syngnathus typhle in a temperate coastal lagoon
Estuarine Coastal and Shelf Science, 2007Co-Authors: Frederico Oliveira, Karim Erzini, Jorge M.s. GonçalvesAbstract:Abstract Feeding habits of Syngnathus typhle were determined based on monthly sampling during experimental fishing in a coastal lagoon (Ria Formosa, South Portugal) from April 2001 to May 2002. The gut contents of 856 individuals were analysed and quantified with numerical and gravimetric methods, as well as with some complementary indices and measures (vacuity, fullness and relative importance). In this study, this species fed mainly on Copepoda, Mysidacea, small caridean grass shrimps (Hippolytidae and Palaemonidae) and small fishes (Gobiidae) and to a lesser degree on other small invertebrates. No significant differences were found between the diets of males and females. However, significant differences in the fullness indexes of both sexes were observed during the reproductive period. Significant differences in the diet among seasons were also verified but no seasonal trends were discovered. Snout length showed a linear increase with growth while mouth area and total length displayed an allometric relation. Mouth shape varied between an ellipse and an almost perfect circle. The increase in mouth area and snout length as S. typhle grows contributed to the observed ontogenic diet shift with specimens smaller than 10 cm feeding almost exclusively on Copepoda, medium sized specimens feeding mainly on Hippolytidae and Mysidacea, while larger specimens preyed on Hippolytidae, Palaemonidae and Gobiidae. Prey size generally increased with size of S. typhle .
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Feeding habits of the deep-snouted pipefish Syngnathus typhle in a temperate coastal lagoon
Estuarine Coastal and Shelf Science, 2007Co-Authors: Frederico Oliveira, Karim Erzini, Jorge M.s. GonçalvesAbstract:Feeding habits of Syngnathus typhle were determined based on monthly sampling during experimental fishing in a coastal lagoon (Ria Formosa, South Portugal) from April 2004 to May 2002. The gut contents of 856 individuals were analysed and quantified with numerical and gravimetric methods, as well as with some complementary indices and measures (vacuity, fullness and relative importance). In this study, this species fed mainly on Copepoda, Mysidacea, small caridean grass shrimps (Hippolytidae and Palaemonidae) and small fishes (Gobiidae) and to a lesser degree on other small invertebrates. No significant differences were found between the diets of males and females. However, significant differences in the fullness indexes of both sexes were observed during the reproductive period. Significant differences in the diet among seasons were also verified but no seasonal trends were discovered. Snout length showed a linear increase with growth while mouth area and total length displayed an allometric relation. Mouth shape varied between an ellipse and an almost perfect circle. The increase in mouth area and snout length as S. typhle grows contributed to the observed ontogenic diet shift with specimens smaller than 10 cm feeding almost exclusively on Copepoda, medium sized specimens feeding mainly on Hippolytidae and Mysidacea, while larger specimens preyed on Hippolytidae, Palaemonidae and Gobiidae. Prey size generally increased with size of S. typhle. (c) 2007 Elsevier Ltd. All rights reserved
Sammy De Grave - One of the best experts on this subject based on the ideXlab platform.
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The family Anchistioididae Borradaile, 1915 (Decapoda: Caridea) is a synonym of Palaemonidae Rafinesque, 1815 based on molecular and morphological evidence
Journal of Crustacean Biology, 2020Co-Authors: Lai Him Chow, Sammy De Grave, Ling Ming TsangAbstract:AbstractSeveral systematic revisions of the superfamily Palaemonoidea Rafinesque, 1815 (Natantia) have been published, with molecular studies complementing morphological examination. Yet, the true systematic positions of two families within the superfamily have remained uncertain, one of these being Anchistioididae Borradaile, 1915, the second being Desmocarididae Borradaile, 1915. We constructed a further phylogeny of Palaemonoidea based on two mitochondrial and five nuclear markers to resolve this issue. AnchistioidesPaulson, 1875 (the sole genus of Anchistioididae) is recovered nested within Palaemonidae Rafinesque, 1815, calling into question the validity of Anchistioididae as a distinct family. We also review the morphological characters that have been used to support family level status of Anchistioides including mouthparts adaptations, telson ornamentation, larval morphology, the presence of an appendix interna on the first pleopod in both sexes, and the mandible with a distally flared molar process. Although the latter two characters appear to be synapomorphic to the genus, we contend that these are ambiguous and not well founded to support the family-level status of the genus. As a consequence, and supported by the phylogenetic results, Anchistioididae is herein considered to be a synonym of Palaemonidae.
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On the systematic status of Isopericlimenaeus Marin, 2012 and its type species, Periclimenaeus gorgonidarum (Balss, 1913) (Crustacea: Decapoda: Palaemonidae).
Zootaxa, 2019Co-Authors: Jin-ho Park, Sammy De Grave, Won KimAbstract:The palaemonid genus Isopericlimenaeus is currently comprised of only the type species, Isopericlimenaeus gorgonidarum , with the diagnostic character of the genus being the presence of a molar and fossa structure on both second chelipeds. Periclimenaeus uropodialis is a closely related species, which has either been considered a synonym of I. gorgonidarum or placed as a valid species in the related genus, Periclimenaeus . During fieldwork in the Philippines, Taiwan and Korea, several species of Periclimenaeus and other sponge associated shrimps belonging to the family Palaemonidae were collected, including I. gorgonidarum and P. uropodialis . Based on a morphological and molecular comparison, it is demonstrated that both taxa are conspecific and that Isopericlimenaeus is a junior synonym of Periclimenaeus .
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Further records of burrow-associated palaemonid shrimps (Decapoda: Palaemonidae).
Zootaxa, 2019Co-Authors: Arthur Anker, Sammy De GraveAbstract:Despite the ubiquitous nature of symbiosis in palaemonid shrimps (Caridea: Palaemonidae) which live in or on varied invertebrate hosts, such as echinoderms, sponges, ascidians, hard and soft corals, etc., very few taxa have been recorded living in burrows constructed by other animals. This is in sharp contrast to the rich burrow-dwelling diversity in the Alpheidae, in which numerous genera associate with a great variety of burrowing animals, including stomatopods (Hayashi 2002; Ďuris & Anker 2014), echiurans (Anker et al. 2005, 2015), other alpheid shrimps (e.g. De Grave 2004; Anker & Marin 2006), and especially numerous ghost and mud shrimps (e.g. Anker, 2011; Anker & Lazarus 2015).
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Notes on the shrimp genus Palaemon Weber, 1795 (Crustacea, Decapoda, Palaemonidae) and related genera from Taiwan
2018Co-Authors: Ashelby, Christopher W., Sammy De Grave, Lin Wei-cheng, Chan Tin-yamAbstract:Ashelby, Christopher W., Lin, Wei-Cheng, Grave, Sammy De, Chan, Tin-Yam (2018): Notes on the shrimp genus Palaemon Weber, 1795 (Crustacea, Decapoda, Palaemonidae) and related genera from Taiwan. Zootaxa 4446 (4): 575-595, DOI: https://doi.org/10.11646/zootaxa.4446.4.1
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Let's be pals again: major systematic changes in Palaemonidae (Crustacea: Decapoda)
PeerJ, 2015Co-Authors: Sammy De Grave, Charles H. J. M. Fransen, Timothy J. PageAbstract:In recent years the systematic position of genera in the shrimp families Gnathophyllidae and Hymenoceridae has been under debate, with phylogenetic studies suggesting the families are not real family level units. Here, we review the molecular evidence as well as the morphological characters used to distinguish both families, leading to the conclusion that neither family is valid. Further, we studied the structural details of the single morphological character which distinguishes the two subfamilies (Palaemoninae, Pontoniinae) in Palaemonidae, as well as their phylogenetic relationship. As the supposed character distinction plainly does not hold true and supported by the phylogenetic results, the recognition of subfamilies in Palaemonidae is not warranted. As a consequence, all three supra-generic taxa (Gnathophyllidae, Hymenoceridae, Pontoniinae) are thus herein formally synonymised with Palaemonidae.
Horká Ivona - One of the best experts on this subject based on the ideXlab platform.
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Evoluce, ekologie a systematika symbiotických krevet (Crustacea: Decapoda: Caridea)
Univerzita Karlova Přírodovědecká fakulta, 2017Co-Authors: Horká IvonaAbstract:Disertační práce je zaměřena na symbiotické vztahy krevet z infrařádu Caridea se zástupci z různých kmenů bezobratlých. V současné době je v rámci Caridea známo pět čeledí se symbiotickými druhy. Ekologický významná a druhově nejpočetnější je čeleď Palaemonidae, která podle tradičního pojetí zahrnuje i podčeleď Pontoniinae s většinou symbiotických druhů. Její zástupce můžeme nalézt ve slaných a brakických vodách, od mírného pásu po pás tropický, s nejvyšší druhovou diverzitou v Indo-západotichomořské geografické oblasti a západním Atlantiku. Disertační práce je rozdělena na dvě části, ekologicko-evoluční a systematickou. Ekologická část přináší nové poznatky o evoluci symbiotických vazeb u krevet z čeledi Palaemonidae. V Kapitole 1 jsme potvrdili, že kolonizace nového hostitele, mnohdy z jiného kmene, se u symbiotických krevet této skupiny v průběhu evoluce vyskytuje opakovaně a sehrává významnou roli při její diverzifikaci. Stejně tak přechod z ektosymbiotického způsobu života na endosymbiotický, spojený se vznikem adaptací souvisejících s celkovým tvarem těla, se v evoluci Palaemonidae objevuje opakovaně. Návrat k volnému způsobu života je vzácný a vyskytuje se výjimečně u fylogenetických linií s ektosymbiotickými zástupci. Výsledky fylogenetické analýzy mimo jiné ukázaly na polyfylii u několika...This thesis is focused on symbiotic associations of caridean shrimps with a variety of marine animals of different phyla. Currently, five caridean families comprise symbiotic species. Palaemonidae (including the traditionally recognised subfamily Pontoniinae of predominantly symbiotic species) is the most species-rich and ecologically important of them. Its representatives live from temperate to tropical marine or brackish waters, with the highest diversity in the Indo-West Pacific biogeographic area and the western Atlantic. The thesis is composed of two parts, one focusing on ecology and evolutionary biology, the other on systematics. The first part consists of three studies providing new knowledge on the evolution of symbioses in palaemonid shrimps. We confirmed that inter-phylum host-switching events and colonization of new hosts likely played a major role in the evolution of palaemonid symbiotic shrimps and these evolved multiple times (Chapter 1). Similarly, the switching from ecto- to endosymbiotic mode, associated with new body forms and ecological adaptations, occurred several times in palaemonid evolution. Reversal back to a free-living mode is rare, occasionally observed among ectosymbiotic lineages. Our results also confirm the necessity of systematic revision of this group,...Katedra ekologieDepartment of EcologyPřírodovědecká fakultaFaculty of Scienc
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Evoluce, ekologie a systematika symbiotických krevet (Crustacea: Decapoda: Caridea)
Univerzita Karlova Přírodovědecká fakulta, 2017Co-Authors: Horká IvonaAbstract:This thesis is focused on symbiotic associations of caridean shrimps with a variety of marine animals of different phyla. Currently, five caridean families comprise symbiotic species. Palaemonidae (including the traditionally recognised subfamily Pontoniinae of predominantly symbiotic species) is the most species-rich and ecologically important of them. Its representatives live from temperate to tropical marine or brackish waters, with the highest diversity in the Indo-West Pacific biogeographic area and the western Atlantic. The thesis is composed of two parts, one focusing on ecology and evolutionary biology, the other on systematics. The first part consists of three studies providing new knowledge on the evolution of symbioses in palaemonid shrimps. We confirmed that inter-phylum host-switching events and colonization of new hosts likely played a major role in the evolution of palaemonid symbiotic shrimps and these evolved multiple times (Chapter 1). Similarly, the switching from ecto- to endosymbiotic mode, associated with new body forms and ecological adaptations, occurred several times in palaemonid evolution. Reversal back to a free-living mode is rare, occasionally observed among ectosymbiotic lineages. Our results also confirm the necessity of systematic revision of this group,...Disertační práce je zaměřena na symbiotické vztahy krevet z infrařádu Caridea se zástupci z různých kmenů bezobratlých. V současné době je v rámci Caridea známo pět čeledí se symbiotickými druhy. Ekologický významná a druhově nejpočetnější je čeleď Palaemonidae, která podle tradičního pojetí zahrnuje i podčeleď Pontoniinae s většinou symbiotických druhů. Její zástupce můžeme nalézt ve slaných a brakických vodách, od mírného pásu po pás tropický, s nejvyšší druhovou diverzitou v Indo-západotichomořské geografické oblasti a západním Atlantiku. Disertační práce je rozdělena na dvě části, ekologicko-evoluční a systematickou. Ekologická část přináší nové poznatky o evoluci symbiotických vazeb u krevet z čeledi Palaemonidae. V Kapitole 1 jsme potvrdili, že kolonizace nového hostitele, mnohdy z jiného kmene, se u symbiotických krevet této skupiny v průběhu evoluce vyskytuje opakovaně a sehrává významnou roli při její diverzifikaci. Stejně tak přechod z ektosymbiotického způsobu života na endosymbiotický, spojený se vznikem adaptací souvisejících s celkovým tvarem těla, se v evoluci Palaemonidae objevuje opakovaně. Návrat k volnému způsobu života je vzácný a vyskytuje se výjimečně u fylogenetických linií s ektosymbiotickými zástupci. Výsledky fylogenetické analýzy mimo jiné ukázaly na polyfylii u několika...Katedra ekologieDepartment of EcologyFaculty of SciencePřírodovědecká fakult
