Invertebrate Biology

VOLUME 132 | NUMBER 1 | 2013

An international journal of the American Microscopical Society

and the Division of Invertebrate Zoology/SICB

VOLU

ME

132 |NUM

BER

1|

2013

Invertebrate BiologyVOLUME 132 | NUMBER 1 | 2013

CONTENTS

1–13 The triradiate sucking pharynx in animal phylogenyClaus Nielsen

14–26 Neural correlates of settlement in veliger larvae of the gastropod, Crepidula fornicataJacob R. Penniman, Margaret K. Doll, and Anthony Pires

27–37 Androdioecy and hermaphroditism in five species of clam shrimps (Crustacea: Branchiopoda:Spinicaudata) from India and Thailand

Justin S. Brantner, Donald W. Ott, R. Joel Duff, La-orsri Sanoamuang, Gulli Palli Simhachalam, K. K. Subhash Babu, and

Stephen C. Weeks

38–45 Morphological diversity of setae on the second maxilliped of fiddler crabs (Decapoda: Ocypodidae)from the southwestern Atlantic coast

Karine Delevati Colpo and Maria Lucia Negreiros-Fransozo

46–51 Population dynamics of a threatened giant millipede: implications for restorationJames M. Lawrence, Michael J. Samways, Janine A. Kelly, and Jock Henwood

52–61 Inverted sand dollars actively orient themselves in flow to increase likelihood of rightingAdam R. Hardy and Rachel A. Merz

62–68 The anus as a second mouth: anal suspension feeding by an oral deposit-feeding sea cucumberWilliam. B. Jaeckle and Richard. R. Strathmann

69–80 Growing or reproducing in a temperate sea: optimization of resource allocation in a colonial ascidianSusanna López-Legentil, Patrick M. Erwin, Marta Velasco, and Xavier Turon

COVER ILLUSTRATION Effective monitoring and conservation of animal populations requires knowledge of their dynamics, but these long time-series dataare relatively rare in the literature, especially for threatened invertebrates. In this issue (pp. 46–51), Lawrence, Samways, Kelly, andHenwood describe a long time-series study of the population dynamics of the Seychelles Giant Millipede, Sechelleptus seychellarum, a large (the specimens pictured on the cover are ~20 cm in length) millipede endemic to granitic islands of theSeychelles. For 11 years, they monitored populations of this species on Cousine Island, the only Seychelles granitic island that isfree of potentially predatory invasive mammals. Millipedes were most abundant and active during high rainfall months, leadingthe authors to suggest that any population manipulations (e.g., translocations, augmentations) should be done during this season.In addition, they suggest that control efforts for the invasive African big-headed ant, which involve the use of a pesticide that mayaffect millipedes, should be confined to low rainfall months, when millipede activity is at its lowest. (Image by James Lawrence.)

ISSN (Print): 1077-8306ISSN (online): 1744-7410

InvertebrateBiolog

y

wileyonlinelibrary.com/journal/ivb

ivb_132_1_oc_OC.qxd 3/5/2013 12:05 PM Page 1

Invertebrate Biology

VOLUME 132 | NUMBER 1 | 2013

An international journal of the American Microscopical Society

and the Division of Invertebrate Zoology/SICB

VOLU

ME

132 |NUM

BER

1|

2013

Invertebrate BiologyVOLUME 132 | NUMBER 1 | 2013

CONTENTS

1–13 The triradiate sucking pharynx in animal phylogenyClaus Nielsen

14–26 Neural correlates of settlement in veliger larvae of the gastropod, Crepidula fornicataJacob R. Penniman, Margaret K. Doll, and Anthony Pires

27–37 Androdioecy and hermaphroditism in five species of clam shrimps (Crustacea: Branchiopoda:Spinicaudata) from India and Thailand

Justin S. Brantner, Donald W. Ott, R. Joel Duff, La-orsri Sanoamuang, Gulli Palli Simhachalam, K. K. Subhash Babu, and

Stephen C. Weeks

38–45 Morphological diversity of setae on the second maxilliped of fiddler crabs (Decapoda: Ocypodidae)from the southwestern Atlantic coast

Karine Delevati Colpo and Maria Lucia Negreiros-Fransozo

46–51 Population dynamics of a threatened giant millipede: implications for restorationJames M. Lawrence, Michael J. Samways, Janine A. Kelly, and Jock Henwood

52–61 Inverted sand dollars actively orient themselves in flow to increase likelihood of rightingAdam R. Hardy and Rachel A. Merz

62–68 The anus as a second mouth: anal suspension feeding by an oral deposit-feeding sea cucumberWilliam. B. Jaeckle and Richard. R. Strathmann

69–80 Growing or reproducing in a temperate sea: optimization of resource allocation in a colonial ascidianSusanna López-Legentil, Patrick M. Erwin, Marta Velasco, and Xavier Turon

COVER ILLUSTRATION Effective monitoring and conservation of animal populations requires knowledge of their dynamics, but these long time-series dataare relatively rare in the literature, especially for threatened invertebrates. In this issue (pp. 46–51), Lawrence, Samways, Kelly, andHenwood describe a long time-series study of the population dynamics of the Seychelles Giant Millipede, Sechelleptus seychellarum, a large (the specimens pictured on the cover are ~20 cm in length) millipede endemic to granitic islands of theSeychelles. For 11 years, they monitored populations of this species on Cousine Island, the only Seychelles granitic island that isfree of potentially predatory invasive mammals. Millipedes were most abundant and active during high rainfall months, leadingthe authors to suggest that any population manipulations (e.g., translocations, augmentations) should be done during this season.In addition, they suggest that control efforts for the invasive African big-headed ant, which involve the use of a pesticide that mayaffect millipedes, should be confined to low rainfall months, when millipede activity is at its lowest. (Image by James Lawrence.)

ISSN (Print): 1077-8306ISSN (online): 1744-7410

InvertebrateBiolog

y

wileyonlinelibrary.com/journal/ivb

ivb_132_1_oc_OC.qxd 3/5/2013 12:05 PM Page 1