Pub Date : 2023-03-01DOI: 10.15298/invertzool.20.1.04
W. Dionisio-da-Silva, C. Albuquerque, Deckker P De, Lira A.F. Araujo, D. de
. Large females are usually associated with substantial provisioning of offspring. However, the finitude of resources generally results in a trade-off between investment in offspring size and number in many taxa. Such incidences are poorly investigated in iteroparous species, which produce multiple broods throughout their lifespan. Thus, we produced a model to predict how maternal traits (female size and mass) are associated with offspring traits (number and mass) in an iteroparous scorpion. To this end, we used a sample of 166 juveniles from 20 Tityus pusillus Pocock, 1893 females collected from a fragment in the Brazilian Atlantic rainforest. Our results showed that maternal traits (e.g. size and mass) were not correlated with provisioning, and no statistical correlation was found between total offspring mass and offspring size. Similar to congeneric species,
{"title":"Reproductive investment in the Brazilian scorpion Tityus pusillus Pocock, 1893 (Scorpiones: Buthidae): Do larger females produce better offspring?","authors":"W. Dionisio-da-Silva, C. Albuquerque, Deckker P De, Lira A.F. Araujo, D. de","doi":"10.15298/invertzool.20.1.04","DOIUrl":"https://doi.org/10.15298/invertzool.20.1.04","url":null,"abstract":". Large females are usually associated with substantial provisioning of offspring. However, the finitude of resources generally results in a trade-off between investment in offspring size and number in many taxa. Such incidences are poorly investigated in iteroparous species, which produce multiple broods throughout their lifespan. Thus, we produced a model to predict how maternal traits (female size and mass) are associated with offspring traits (number and mass) in an iteroparous scorpion. To this end, we used a sample of 166 juveniles from 20 Tityus pusillus Pocock, 1893 females collected from a fragment in the Brazilian Atlantic rainforest. Our results showed that maternal traits (e.g. size and mass) were not correlated with provisioning, and no statistical correlation was found between total offspring mass and offspring size. Similar to congeneric species,","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80398889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.15298/invertzool.20.1.01
I. Jirkov
. Illustrated descriptions of eight taxa of species rank of Ampharete similar to Ampharete finmarchica , five based on type materials, including Ampharete britayevi sp.n., others based on topotypes. A key for their identification is provided. Based on morphological data, it is proposed to erected these species as Ampharete (superspecies finmarchica ). Of the 8 species in the superspecies, seven inhabit the Northern Pacific and one ( A. kerguelensis ) the Southern Hemisphere, therefore, it is likely that this group is of North Pacific origin, different species of which arose in different biomes.
{"title":"Revision of Ampharete (superspecies finmarchica) (Annelida: Ampharetidae)","authors":"I. Jirkov","doi":"10.15298/invertzool.20.1.01","DOIUrl":"https://doi.org/10.15298/invertzool.20.1.01","url":null,"abstract":". Illustrated descriptions of eight taxa of species rank of Ampharete similar to Ampharete finmarchica , five based on type materials, including Ampharete britayevi sp.n., others based on topotypes. A key for their identification is provided. Based on morphological data, it is proposed to erected these species as Ampharete (superspecies finmarchica ). Of the 8 species in the superspecies, seven inhabit the Northern Pacific and one ( A. kerguelensis ) the Southern Hemisphere, therefore, it is likely that this group is of North Pacific origin, different species of which arose in different biomes.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"21 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89553849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.15298/invertzool.20.1.03
K. Tabachnick, L. Menshenina, H. Ehrlich
: Members of the family Rossellidae are the main contributors to the hexacti-nellid fauna and even to the macrobenthic fauna in the deep waters of the North Pacific. Representatives of this family often reach a larger size than other Hexactinellida, Porifera and even other representatives of benthic invertebrates. Description of Rossellidae from the Bering Sea collected by trawls, submersibles and remotely operated vehicles (ROVs) during the expeditions of RVs ‘Akademik M.A. Lavrentyev’ and ‘Akademik Mstislav Keldysh’ are given. Subgenera, species and subspecies in five genera are described and include: Acanthascus ( Acanthascus ) alani profundus ; A. ( Acanthascus ) alani microdiscoctasterus ssp.n.; Acanthascus ( Rhabdocalyptus ) bore-alis ; Acanthascus ( Rhabdocalyptus ) heteraster ; Acanthascus ( Rhabdocalyptus ) mirabilis ; Acanthascus ( Staurocalyptus ) tylotus ; Aulosaccus
:玫瑰科的成员是北太平洋深水中六栖动物区系甚至大型底栖动物区系的主要贡献者。这个家族的代表经常达到比其他的Hexactinellida, Porifera甚至其他底栖无脊椎动物的代表更大的尺寸。介绍了“Akademik M.A. Lavrentyev”号和“Akademik Mstislav Keldysh”号游船在白令海通过拖网渔船、潜水器和遥控车辆(rov)采集的Rossellidae。描述了五个属的亚属、种和亚种，包括:深棘棘(Acanthascus);棘豆属(ananthascus);棘棘(Rhabdocalyptus);棘棘(Rhabdocalyptus)杂交种;棘(Rhabdocalyptus) miracabilis;棘花(Staurocalyptus);Aulosaccus
{"title":"Rossellidae (Porifera: Hexactinellida) from the Bering Sea and off Bering Island","authors":"K. Tabachnick, L. Menshenina, H. Ehrlich","doi":"10.15298/invertzool.20.1.03","DOIUrl":"https://doi.org/10.15298/invertzool.20.1.03","url":null,"abstract":": Members of the family Rossellidae are the main contributors to the hexacti-nellid fauna and even to the macrobenthic fauna in the deep waters of the North Pacific. Representatives of this family often reach a larger size than other Hexactinellida, Porifera and even other representatives of benthic invertebrates. Description of Rossellidae from the Bering Sea collected by trawls, submersibles and remotely operated vehicles (ROVs) during the expeditions of RVs ‘Akademik M.A. Lavrentyev’ and ‘Akademik Mstislav Keldysh’ are given. Subgenera, species and subspecies in five genera are described and include: Acanthascus ( Acanthascus ) alani profundus ; A. ( Acanthascus ) alani microdiscoctasterus ssp.n.; Acanthascus ( Rhabdocalyptus ) bore-alis ; Acanthascus ( Rhabdocalyptus ) heteraster ; Acanthascus ( Rhabdocalyptus ) mirabilis ; Acanthascus ( Staurocalyptus ) tylotus ; Aulosaccus","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91208407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.15298/invertzool.20.1.05
S. Fadlaoui, M. Melhaoui
: The present study aims to determine, for the first time, the annual breeding cycle and the biochemical changes in the gonads of the North African freshwater crab, Potamon algeriense (Bott, 1967). Monthly collections were carried out by hand, from October 2018 to September 2019 in Oued Zegzel, a mountain stream in the Northeast of Morocco. The gonad size reached high values in the dry season (June to September) showing the maximum breeding activity during these months. By June, the gonads of most of the individuals attained full maturity where the spawning began. Spawning terminated by the end of September then the gonads entered a quiescent period. Histological observations of the gonads revealed that the ripening of the gonads started during March and extended up to May. During the maturation of the gonads, protein, fat
{"title":"Breeding cycle and seasonal biochemical changes in the gonads of the North African freshwater crab Potamon algeriense (Bott, 1967) (Brachyura: Potamidae)","authors":"S. Fadlaoui, M. Melhaoui","doi":"10.15298/invertzool.20.1.05","DOIUrl":"https://doi.org/10.15298/invertzool.20.1.05","url":null,"abstract":": The present study aims to determine, for the first time, the annual breeding cycle and the biochemical changes in the gonads of the North African freshwater crab, Potamon algeriense (Bott, 1967). Monthly collections were carried out by hand, from October 2018 to September 2019 in Oued Zegzel, a mountain stream in the Northeast of Morocco. The gonad size reached high values in the dry season (June to September) showing the maximum breeding activity during these months. By June, the gonads of most of the individuals attained full maturity where the spawning began. Spawning terminated by the end of September then the gonads entered a quiescent period. Histological observations of the gonads revealed that the ripening of the gonads started during March and extended up to May. During the maturation of the gonads, protein, fat","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72690075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.15298/invertzool.20.1.07
Yu.S. Tokarev, A. Ignatieva, I. Grushevaya, V.Yu. Kryukov, Yu. M. Malysh
: The microsporidium Nosema pyrausta (Paillot) Weiser, 1961 is an important mortality factor of the stem borers of the genus Ostrinia and may be used to control other lepidopteran pests. Rearing conditions (temperature regime and diet composition) of the laboratory host Ostrinia furnacalis (Guenée, 1854) (Pyraloidea: Crambidae)
{"title":"Spore yield of the microsporidium Nosema pyrausta (Paillot) Weiser, 1961 is influenced the insect host rearing temperature and diet composition","authors":"Yu.S. Tokarev, A. Ignatieva, I. Grushevaya, V.Yu. Kryukov, Yu. M. Malysh","doi":"10.15298/invertzool.20.1.07","DOIUrl":"https://doi.org/10.15298/invertzool.20.1.07","url":null,"abstract":": The microsporidium Nosema pyrausta (Paillot) Weiser, 1961 is an important mortality factor of the stem borers of the genus Ostrinia and may be used to control other lepidopteran pests. Rearing conditions (temperature regime and diet composition) of the laboratory host Ostrinia furnacalis (Guenée, 1854) (Pyraloidea: Crambidae)","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86205841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.01
A. Granovitch
: The 200th anniversary of the Department of Zoology of St. Petersburg State University and the 150th anniversary of its daughter Department of Invertebrate Zoology are decent reasons to consider the important historical phenomenon. The history of the Department is the story of development of Zoology, the story of revolutionary changes in society. But, at the same time, it is the story of the continuity of generations of zoologists. The article presents a brief historical review of two centuries, but also contains elements of analysis: the long and fruitful existence of the zoological department makes it possible to trace the main trends in its development. Many of its features are likely to be common to the logic of evolution of “biodiversity departments”, but of course, each department with a long history is unique. Here is a historical case study. I hope that reflection on historical events can help identify the trends and even the reasons of the Department’s sustainability throughout this considerable time interval.
{"title":"Department of Invertebrate Zoology, and 200 years of zoological history at Saint Petersburg University","authors":"A. Granovitch","doi":"10.15298/invertzool.19.4.01","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.01","url":null,"abstract":": The 200th anniversary of the Department of Zoology of St. Petersburg State University and the 150th anniversary of its daughter Department of Invertebrate Zoology are decent reasons to consider the important historical phenomenon. The history of the Department is the story of development of Zoology, the story of revolutionary changes in society. But, at the same time, it is the story of the continuity of generations of zoologists. The article presents a brief historical review of two centuries, but also contains elements of analysis: the long and fruitful existence of the zoological department makes it possible to trace the main trends in its development. Many of its features are likely to be common to the logic of evolution of “biodiversity departments”, but of course, each department with a long history is unique. Here is a historical case study. I hope that reflection on historical events can help identify the trends and even the reasons of the Department’s sustainability throughout this considerable time interval.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84483971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.05
A. Maltseva, M.A.Z. Panova, M. Varfolomeeva, D. V. Vikhreva, D. Smutin, P. A. Pavlova, G. Maslakov, L. Danilov, N. Mikhailova, A. Granovitch, А . Л . Мальцева, М . А . З . Панова, М . А . Варфоломеева, Д . В . Вихрева, Д . В . Смутин, П . А . Павлова, Г . П . Маслаков, Л . Г . Данилов, Н . А . Михайлова, А . И . Гранович
: Phylogeographic studies of evolutionary young species co-existing over a vast geographic area can provide insights in the process of evolutionary divergence and its cohesiveness in different parts of the species ranges. The Littorina snails of the ‘saxatilis’ cryptic group diverged in near-glacial time, and tend to live in sympatry. L. saxatilis is widely distributed on both sides of the North Atlantic, while L. arcana and L. compressa
{"title":"Phylogeography of the closely related Littorina (Neritrema) species in the North-East Atlantic","authors":"A. Maltseva, M.A.Z. Panova, M. Varfolomeeva, D. V. Vikhreva, D. Smutin, P. A. Pavlova, G. Maslakov, L. Danilov, N. Mikhailova, A. Granovitch, А . Л . Мальцева, М . А . З . Панова, М . А . Варфоломеева, Д . В . Вихрева, Д . В . Смутин, П . А . Павлова, Г . П . Маслаков, Л . Г . Данилов, Н . А . Михайлова, А . И . Гранович","doi":"10.15298/invertzool.19.4.05","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.05","url":null,"abstract":": Phylogeographic studies of evolutionary young species co-existing over a vast geographic area can provide insights in the process of evolutionary divergence and its cohesiveness in different parts of the species ranges. The Littorina snails of the ‘saxatilis’ cryptic group diverged in near-glacial time, and tend to live in sympatry. L. saxatilis is widely distributed on both sides of the North Atlantic, while L. arcana and L. compressa","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88154177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.07
E. Temereva, T. Kuzmina, Е . Н . Темерева, Т . В . Кузьмина
: The lophophore is a tentaculated organ — a specificity of Lophophorata. Since molecular phylogeny has yielded contradictory data on the monophyly of lophophor-ates, results of comparative morphology are used here to shed light on the question about the homology of the lophophore in different groups of lophophorates. We compare the morphology of the lophophore and the organization of its coelomic, nervous, and muscular systems in three different phyla of lophophorates: phoronids, bryozoans, and brachiopods. The morphology of the lophophore and the structure of all lophophoral organ systems are examined in respect to the standard criteria of homology. The comparative analysis supports the homology of the lophophore and suggests the monophyly of the lophophorates. We present a hypothetical scenario of lophophore evolution based on our analyses. Accordingly, the ancestral lophophore of lophophorates had a horseshoe-shaped brachial axis and was innervated by supraenteric and subenteric nerve centers, which were connected by circumenteric connectives and a circumoral nerve. This ancestral lophophore then evolved in three different phyla by two pathways: (i) by complication and (ii) by simplification.
{"title":"Homology of the lophophore and its evolution within lophophorates","authors":"E. Temereva, T. Kuzmina, Е . Н . Темерева, Т . В . Кузьмина","doi":"10.15298/invertzool.19.4.07","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.07","url":null,"abstract":": The lophophore is a tentaculated organ — a specificity of Lophophorata. Since molecular phylogeny has yielded contradictory data on the monophyly of lophophor-ates, results of comparative morphology are used here to shed light on the question about the homology of the lophophore in different groups of lophophorates. We compare the morphology of the lophophore and the organization of its coelomic, nervous, and muscular systems in three different phyla of lophophorates: phoronids, bryozoans, and brachiopods. The morphology of the lophophore and the structure of all lophophoral organ systems are examined in respect to the standard criteria of homology. The comparative analysis supports the homology of the lophophore and suggests the monophyly of the lophophorates. We present a hypothetical scenario of lophophore evolution based on our analyses. Accordingly, the ancestral lophophore of lophophorates had a horseshoe-shaped brachial axis and was innervated by supraenteric and subenteric nerve centers, which were connected by circumenteric connectives and a circumoral nerve. This ancestral lophophore then evolved in three different phyla by two pathways: (i) by complication and (ii) by simplification.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83017581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.06
S. Shchenkov, S. Denisova, M. Nesterenko, V. Lebedenkov, D. E. Kharytonau
: Xiphidiocercariae is a non-taxonomic group of digenean larvae. These small cercariae are characterized by complex morphology, which complicates their accurate identification. Recently, we have devoted a series of papers to the least studied groups of xiphidiocercariae — Cercariae virgulae and Cercariae microcotylae . Here we present the morphological description and molecular phylogenetic analysis of the new microcotylous cercaria. We have identified morphological features that allow us to distinguish this larva from all previously described cercariae. This species lacks virgula organ and possesses three pairs of penetration glands and Y-shaped excretory bladder. Molecular phylogenetic analysis performed with 28S rDNA and cox 1 mtDNA sequences made it possible to confirm the taxonomic position of this cercaria within the family Prosthogonimidae, and to determine its species identity as
{"title":"Morphological description and phylogenetic position of xiphidiate cercaria of Prosthogonimus pellucidus (Trematoda: Digenea)","authors":"S. Shchenkov, S. Denisova, M. Nesterenko, V. Lebedenkov, D. E. Kharytonau","doi":"10.15298/invertzool.19.4.06","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.06","url":null,"abstract":": Xiphidiocercariae is a non-taxonomic group of digenean larvae. These small cercariae are characterized by complex morphology, which complicates their accurate identification. Recently, we have devoted a series of papers to the least studied groups of xiphidiocercariae — Cercariae virgulae and Cercariae microcotylae . Here we present the morphological description and molecular phylogenetic analysis of the new microcotylous cercaria. We have identified morphological features that allow us to distinguish this larva from all previously described cercariae. This species lacks virgula organ and possesses three pairs of penetration glands and Y-shaped excretory bladder. Molecular phylogenetic analysis performed with 28S rDNA and cox 1 mtDNA sequences made it possible to confirm the taxonomic position of this cercaria within the family Prosthogonimidae, and to determine its species identity as","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91329655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.02
G. A. Barmasova, Z. I. Starunova, E. Novikova, V. Starunov
: Catecholamines (CA) are known to play an important role in the physiology of most invertebrates. Here we provide the results on catecholaminergic systems study of two annelid species: Pygospio elegans (Spionidae) and Platynereis dumerilii (Nereididae). The nervous system was studied with the histochemical method of monoamine condensation with glyoxylic acid in combination with confocal laser scanning microscopy. Both animals possess developed catecholaminergic systems with similar general organization. However, in P. dumerilii considerably fewer cells were detected. In both species, CA-positive cells were found in the brain, ventral nerve cord as well as in the stomatogastric system, body wall, palps, prostomium, and regions around the chaetae. According to the cell morphology and their location in the most agile parts of
{"title":"Organization of catecholaminergic system of Pygospio elegans and Platynereis dumerilii (Annelida)","authors":"G. A. Barmasova, Z. I. Starunova, E. Novikova, V. Starunov","doi":"10.15298/invertzool.19.4.02","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.02","url":null,"abstract":": Catecholamines (CA) are known to play an important role in the physiology of most invertebrates. Here we provide the results on catecholaminergic systems study of two annelid species: Pygospio elegans (Spionidae) and Platynereis dumerilii (Nereididae). The nervous system was studied with the histochemical method of monoamine condensation with glyoxylic acid in combination with confocal laser scanning microscopy. Both animals possess developed catecholaminergic systems with similar general organization. However, in P. dumerilii considerably fewer cells were detected. In both species, CA-positive cells were found in the brain, ventral nerve cord as well as in the stomatogastric system, body wall, palps, prostomium, and regions around the chaetae. According to the cell morphology and their location in the most agile parts of","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88676704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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