Pub Date : 2023-01-31DOI: 10.1163/15685403-bja10263
K. Izawa
Bomolochus bellones Burmeister, 1835 is redescribed based on specimens recovered from the bucco-branchial cavity of the Pacific saury, Cololabis saira (Actinopterygii, Beloniformes, Scomberesocidae), in Japan. The male, copepodid V female, copepodid IV female, and copepodid III male of the species are described. The postantennal processes and lateral processes have appeared in the female at copepodid V.
{"title":"Redescription of Bomolochus bellones Burmeister, 1835 (Copepoda, Cyclopoida, Bomolochidae) recovered from Cololabis saira (Brevoort, 1856) (Actinopterygii) in Japan, with descriptions of the male and copepodids V-III of the species","authors":"K. Izawa","doi":"10.1163/15685403-bja10263","DOIUrl":"https://doi.org/10.1163/15685403-bja10263","url":null,"abstract":"\u0000Bomolochus bellones Burmeister, 1835 is redescribed based on specimens recovered from the bucco-branchial cavity of the Pacific saury, Cololabis saira (Actinopterygii, Beloniformes, Scomberesocidae), in Japan. The male, copepodid V female, copepodid IV female, and copepodid III male of the species are described. The postantennal processes and lateral processes have appeared in the female at copepodid V.","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44593019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-31DOI: 10.1163/15685403-bja10271
Myung-Hwa Shin
During a scientific survey, a new species of phoxocepalid amphipod, Paraphoxus jejuensis sp. nov., was found in the tidal flat of Jeju Island, Korea. Paraphoxus jejuensis sp. nov. is distinguished from its congeneric species by the following features: the presence of a conical-form of incisor on the right mandible, an expanded and subovate basis of pereopod 5, the presence of a single plumose facial seta on epimeron 2, the presence of a few baso-facial setae on the peduncle of uropod 1, the absence of marginal spines and setae on the rami of uropod 2, and the presence of two subapical spines on each lobe of the telson. This new species is described and illustrated herein.
{"title":"A new species of Paraphoxus (Amphipoda, Phoxocephalidae) from Jeju Island, Korea","authors":"Myung-Hwa Shin","doi":"10.1163/15685403-bja10271","DOIUrl":"https://doi.org/10.1163/15685403-bja10271","url":null,"abstract":"During a scientific survey, a new species of phoxocepalid amphipod, Paraphoxus jejuensis sp. nov., was found in the tidal flat of Jeju Island, Korea. Paraphoxus jejuensis sp. nov. is distinguished from its congeneric species by the following features: the presence of a conical-form of incisor on the right mandible, an expanded and subovate basis of pereopod 5, the presence of a single plumose facial seta on epimeron 2, the presence of a few baso-facial setae on the peduncle of uropod 1, the absence of marginal spines and setae on the rami of uropod 2, and the presence of two subapical spines on each lobe of the telson. This new species is described and illustrated herein.","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46383738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10253
P. Ng, P. Clark
Pilumnus lanuginosus Klunzinger, 1913 is a rarely reported pilumnid crab known only from the Red Sea. Although placed in Heteropilumnus De Man, 1895, since 1933 this species is here transferred to Pseudolitochira Ward, 1942. The lateral parts of the posterior epistome margin in this small-sized species are concave, entire and devoid of fissures or clefts, which is a Pseudolitochira character. As the types of Pilumnus lanuginosus are no longer extant, a male from the Red Sea is designated as the neotype of the species.
{"title":"The generic assignment of Pilumnus lanuginosus Klunzinger, 1913 (Brachyura, Pilumnidae)","authors":"P. Ng, P. Clark","doi":"10.1163/15685403-bja10253","DOIUrl":"https://doi.org/10.1163/15685403-bja10253","url":null,"abstract":"\u0000Pilumnus lanuginosus Klunzinger, 1913 is a rarely reported pilumnid crab known only from the Red Sea. Although placed in Heteropilumnus De Man, 1895, since 1933 this species is here transferred to Pseudolitochira Ward, 1942. The lateral parts of the posterior epistome margin in this small-sized species are concave, entire and devoid of fissures or clefts, which is a Pseudolitochira character. As the types of Pilumnus lanuginosus are no longer extant, a male from the Red Sea is designated as the neotype of the species.","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44352984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10256
Ryota Hayashi
{"title":"A comment on Williams Jr. & Bunkley-Williams (2022): the reported organism was not a turtle barnacle","authors":"Ryota Hayashi","doi":"10.1163/15685403-bja10256","DOIUrl":"https://doi.org/10.1163/15685403-bja10256","url":null,"abstract":"","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42483618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10254
K. Izawa
Bomolochus decapteri Yamaguti, 1936 is redescribed based on specimens recovered from the bucco-branchial cavity of three species of Carangidae (Pisces, Perciformes), the roughear scad Decapterus tabl Berry, 1968, the whitefin trevally Carangoides equula (Temminck & Schlegel, 1844), and the Japanese jack mackerel Trachurus japonicus (Temminck & Schlegel, 1844) in Japan. The male of the species is described for the first time. The possession of postantennal processes and lateral processes was verified in the genus, next to Nothobomolochus.
{"title":"Redescription of Bomolochus decapteri Yamaguti, 1936 (Copepoda, Cyclopoida, Bomolochidae) recovered from three species of Carangidae (Pisces, Perciformes) in Japan, with the first description of the male of the species","authors":"K. Izawa","doi":"10.1163/15685403-bja10254","DOIUrl":"https://doi.org/10.1163/15685403-bja10254","url":null,"abstract":"\u0000Bomolochus decapteri Yamaguti, 1936 is redescribed based on specimens recovered from the bucco-branchial cavity of three species of Carangidae (Pisces, Perciformes), the roughear scad Decapterus tabl Berry, 1968, the whitefin trevally Carangoides equula (Temminck & Schlegel, 1844), and the Japanese jack mackerel Trachurus japonicus (Temminck & Schlegel, 1844) in Japan. The male of the species is described for the first time. The possession of postantennal processes and lateral processes was verified in the genus, next to Nothobomolochus.","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45017571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10234
K. Izawa
Nothobomolochus oomenatsutobi sp. nov. is described based on specimens of both sexes recovered from the bucco-branchial cavity of the limpid-wing flyingfish Cheilopogon unicolor (Valenciennes, 1847) in Japan. This species was dealt with previously as N. cypseluri (Yamaguti, 1953) by Izawa (2020).
{"title":"Nothobomolochus oomenatsutobi sp. nov. (Copepoda, Cyclopoida, Bomolochidae) parasitic on the limpid-wing flyingfish Cheilopogon unicolor (Valenciennes, 1847) (Beloniformes, Exocoetidae) in Japan","authors":"K. Izawa","doi":"10.1163/15685403-bja10234","DOIUrl":"https://doi.org/10.1163/15685403-bja10234","url":null,"abstract":"\u0000Nothobomolochus oomenatsutobi sp. nov. is described based on specimens of both sexes recovered from the bucco-branchial cavity of the limpid-wing flyingfish Cheilopogon unicolor (Valenciennes, 1847) in Japan. This species was dealt with previously as N. cypseluri (Yamaguti, 1953) by Izawa (2020).","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45769374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10240
Patricio R. De los Ríos-Escalante, Pedro Jara-Seguel, Á. Contreras, M. Latsague, G. Lara, Carlos Leal-Bastidas
The crayfishes of Chile are endemic species and have been poorly studied with respect to their biology. The available literature is restricted to species descriptions, whereas there is no information about other biological topics such as ectocommensals and parasites, which can affect crayfishes. The aim of the present study was to do a literature review and update the information about ectocommensals and parasites that have been reported from Chilean crayfishes. The literature mentioned the presence of Temnocephala chilensis (Platyhelminthes), Stratiodrilus pugnaxi (Polychaeta) and Protozoa such as species of the genera Operculigera and Lagenophrys as ectocommensals for Parastacus pugnax and Samastacus spinifrons. As an endoparasite, Psorospermium haeckelii was reported, a unicellular eukaryotic organism that was found in P. pugnax ovaria. An additional analysis of collected specimens of P. pugnax and S. spinifrons revealed the presence of T. chilensis, albeit at a low incidence. Ecological, biogeographical and evolutionary topics are discussed considering the case of a marked microendemism of an organism associated with Chilean crayfishes.
{"title":"A review of ectocommensals and parasites of Chilean crayfishes (Decapoda, Parastacidae), with emphasis on Temnocephala chilensis (Moquin-Tandon, 1846) (Platyhelminthes)","authors":"Patricio R. De los Ríos-Escalante, Pedro Jara-Seguel, Á. Contreras, M. Latsague, G. Lara, Carlos Leal-Bastidas","doi":"10.1163/15685403-bja10240","DOIUrl":"https://doi.org/10.1163/15685403-bja10240","url":null,"abstract":"\u0000The crayfishes of Chile are endemic species and have been poorly studied with respect to their biology. The available literature is restricted to species descriptions, whereas there is no information about other biological topics such as ectocommensals and parasites, which can affect crayfishes. The aim of the present study was to do a literature review and update the information about ectocommensals and parasites that have been reported from Chilean crayfishes. The literature mentioned the presence of Temnocephala chilensis (Platyhelminthes), Stratiodrilus pugnaxi (Polychaeta) and Protozoa such as species of the genera Operculigera and Lagenophrys as ectocommensals for Parastacus pugnax and Samastacus spinifrons. As an endoparasite, Psorospermium haeckelii was reported, a unicellular eukaryotic organism that was found in P. pugnax ovaria. An additional analysis of collected specimens of P. pugnax and S. spinifrons revealed the presence of T. chilensis, albeit at a low incidence. Ecological, biogeographical and evolutionary topics are discussed considering the case of a marked microendemism of an organism associated with Chilean crayfishes.","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41729603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10229
Bee Yan Lee, Z. Jaafar
{"title":"In Memoriam Ng Ngan Kee (1966-2022)","authors":"Bee Yan Lee, Z. Jaafar","doi":"10.1163/15685403-bja10229","DOIUrl":"https://doi.org/10.1163/15685403-bja10229","url":null,"abstract":"","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44109679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10233
Jose Josileen, Gidda Maheswarudu, P. Jinesh
Charybdis (Archias) omanensis septentrionalis Türkay & Spiridonov, 2006, has recently been recorded from the Arabian Sea, while the first record of the species was from the Red Sea. The specimens were collected in a shrimp trawl from a depth of 65-68 metres from the southwest coast of the Arabian Sea, off Kerala, India. The species size ranged between 17 and 37 mm carapace width, from 11 to 22.5 mm carapace length and in total weight between 0.39 and 5.53 g. The interrelationships between various morphometric characters, viz., carapace width and length and chelar propodus length and height in males, as well as carapace width and length and abdominal width and length in females, were estimated for the species and it was found that most relationships are positive and highly significant. In the carapace width/length-weight relationship, the estimated b values for carapace width-weight in males, females and pooled, were 2.674, 2.719 and 2.783, respectively, and for carapace length-weight they were 2.601, 2.588 and 2.681, respectively. The results show a significant deviation from an isometric growth pattern. An analysis of covariance indicated that there is a significant difference between sexes with respect to the carapace width/length-weight relationship. The relative condition factor values estimated in males and females were 0.9794 ± 0.16 and 1.1280 ± 0.26, respectively, also recording a significant variation () between sexes.
Charybdis (Archias) omanensis septentrionalis t (rkay & Spiridonov, 2006)最近在阿拉伯海被记录到，而该物种的第一次记录是在红海。这些标本是用虾拖网从印度喀拉拉邦阿拉伯海西南海岸65-68米深的地方收集的。甲宽17 ~ 37 mm，甲长11 ~ 22.5 mm，总重0.39 ~ 5.53 g。分析了雄性甲壳宽度和长度与螯足长度和高度、雌性甲壳宽度和长度与腹部宽度和长度之间的相互关系，发现大多数关系为正相关且极显著。在甲宽长重关系中，雄性、雌性和合群的甲宽重b值分别为2.674、2.719和2.783，甲长重b值分别为2.601、2.588和2.681。结果显示了与等长生长模式的显著偏差。协方差分析表明，在甲壳宽度/长度-重量关系方面，两性之间存在显著差异。男性和女性的相对条件因子值分别为0.9794±0.16和1.1280±0.26，性别差异也显著()。
{"title":"Morphometrics, length-weight relationship and relative condition factor in Charybdis (Archias) omanensis septentrionalis Türkay & Spiridonov, 2006 (Brachyura, Portunidae) from the Arabian Sea","authors":"Jose Josileen, Gidda Maheswarudu, P. Jinesh","doi":"10.1163/15685403-bja10233","DOIUrl":"https://doi.org/10.1163/15685403-bja10233","url":null,"abstract":"\u0000Charybdis (Archias) omanensis septentrionalis Türkay & Spiridonov, 2006, has recently been recorded from the Arabian Sea, while the first record of the species was from the Red Sea. The specimens were collected in a shrimp trawl from a depth of 65-68 metres from the southwest coast of the Arabian Sea, off Kerala, India. The species size ranged between 17 and 37 mm carapace width, from 11 to 22.5 mm carapace length and in total weight between 0.39 and 5.53 g. The interrelationships between various morphometric characters, viz., carapace width and length and chelar propodus length and height in males, as well as carapace width and length and abdominal width and length in females, were estimated for the species and it was found that most relationships are positive and highly significant. In the carapace width/length-weight relationship, the estimated b values for carapace width-weight in males, females and pooled, were 2.674, 2.719 and 2.783, respectively, and for carapace length-weight they were 2.601, 2.588 and 2.681, respectively. The results show a significant deviation from an isometric growth pattern. An analysis of covariance indicated that there is a significant difference between sexes with respect to the carapace width/length-weight relationship. The relative condition factor values estimated in males and females were 0.9794 ± 0.16 and 1.1280 ± 0.26, respectively, also recording a significant variation () between sexes.","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":"332 9","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41258771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.1163/15685403-bja10235
A. Frizzera, C. G. Samartino, Aldo M. Santo, J. Bojko, F. Cremonte, N. Vázquez
Pollution, biological invasions and climate change pose the greatest threats to biodiversity worldwide. Few studies explore the interlink between invasive species and local pollution sites. This study describes the type and cytochemical properties of haemocytes from invasive Carcinus maenas on the southwestern Atlantic coast (Argentina). Moreover, the morphology of haemocytes and the total haemocyte count (THC) as well as the differential haemocyte count (DHC) of crabs sampled at clean or unpolluted and polluted sites were compared, to determine whether environmental stresses were evident in their haemocytes. Our results revealed two groups or subpopulations of haemocytes: hyalinocytes, as well as granulocytes and semi-granulocytes. The type of haemocyte from crabs from both sites showed no differences in their morphology. For cytochemical assays, only neutral red dye showed a more intense staining of crab haemocytes at the polluted site. All haemocytes were positive to Periodic Acid-Schiff and Sudan Black. THC of crabs from the clean site were significantly higher, as well as having a significantly higher proportion of hyalinocytes and a lower proportion of granular cells. This study provides a baseline immunological assessment for C. maenas haemocytes, suggesting a differential haemocytic response to environmental stress.
{"title":"Haemocyte characterization in invasive Carcinus maenas (Linnaeus, 1758) (Decapoda, Portunidae) from unpolluted vs polluted sites in Argentina","authors":"A. Frizzera, C. G. Samartino, Aldo M. Santo, J. Bojko, F. Cremonte, N. Vázquez","doi":"10.1163/15685403-bja10235","DOIUrl":"https://doi.org/10.1163/15685403-bja10235","url":null,"abstract":"\u0000Pollution, biological invasions and climate change pose the greatest threats to biodiversity worldwide. Few studies explore the interlink between invasive species and local pollution sites. This study describes the type and cytochemical properties of haemocytes from invasive Carcinus maenas on the southwestern Atlantic coast (Argentina). Moreover, the morphology of haemocytes and the total haemocyte count (THC) as well as the differential haemocyte count (DHC) of crabs sampled at clean or unpolluted and polluted sites were compared, to determine whether environmental stresses were evident in their haemocytes. Our results revealed two groups or subpopulations of haemocytes: hyalinocytes, as well as granulocytes and semi-granulocytes. The type of haemocyte from crabs from both sites showed no differences in their morphology. For cytochemical assays, only neutral red dye showed a more intense staining of crab haemocytes at the polluted site. All haemocytes were positive to Periodic Acid-Schiff and Sudan Black. THC of crabs from the clean site were significantly higher, as well as having a significantly higher proportion of hyalinocytes and a lower proportion of granular cells. This study provides a baseline immunological assessment for C. maenas haemocytes, suggesting a differential haemocytic response to environmental stress.","PeriodicalId":10834,"journal":{"name":"Crustaceana","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44793750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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