Marine Ecology-An Evolutionary Perspective最新文献

{"title":"Evaluation of phenolic content of wrack debris on estuarine beaches: The effect on upper beach macrofauna","authors":"Marina Gómez,&nbsp;Francisco Barreiro,&nbsp;Jesús López,&nbsp;Mariano Lastra","doi":"10.1111/maec.12692","DOIUrl":"10.1111/maec.12692","url":null,"abstract":"<p>Wrack supply represents the main organic input in sandy beaches ecosystems and is a common feature of beaches around the world. The chemical composition of the wrack is important in determining the extent and rate of the decay; in particular, phenolic compounds may affect consumption rates by wrack-associated macrofauna and, consequently, modify the nutrient processing and recycling in sandy beaches. The aim of this research was to investigate the possible links between phenolic content of wrack supplies and the macrofaunal community inhabiting them. To achieve this, patches of wrack in three beaches of the NW coast of Spain were analysed and the phenolic contents and macrofaunal distribution, both at spatial and temporal scales, were assessed. Wrack and macrofaunal samples were collected along two shore-parallel transects, coinciding with the wrack lines of previous tidal deposition. The results showed a general spatial distribution in the phenolic content of the beach-cast according to their tidal position on the beach. Thus, two distinct zones were identified: the “spring-tide deposited” zone located in the upper beach close to the base of the dunes and composed by wrack material with the lowest phenolic concentrations; and a “freshly deposited” zone with wrack deposits containing the highest concentrations of deterrent compounds. Nevertheless, only supratidal grazers, mostly linked to fresh deposits, have shown a slightly negative association between their abundance and the increasing phenolic contents of the stranded macroalgae. The lack of a consistent pattern in macrofaunal occupation of fresh and decayed drift lines detected suggests the species could be selecting habitats for reasons other than phenolic content.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"43 1","pages":"40-53"},"PeriodicalIF":1.1,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12692","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45224574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consistent genetic divergence observed among pelagic Sargassum morphotypes in the western North Atlantic","authors":"Skye Dibner,&nbsp;Lindsay Martin,&nbsp;Thierry Thibaut,&nbsp;Didier Aurelle,&nbsp;Aurélie Blanfuné,&nbsp;Kerry Whittaker,&nbsp;Laura Cooney,&nbsp;Jeffrey M. Schell,&nbsp;Deborah S. Goodwin,&nbsp;Amy N. S. Siuda","doi":"10.1111/maec.12691","DOIUrl":"10.1111/maec.12691","url":null,"abstract":"<p><i>Sargassum natans</i> and <i>Sargassum fluitans</i> are uniquely holopelagic macroalgae, providing open ocean nursery and foraging habitat for commercially and ecologically important species. Recent basin-wide changes in pelagic <i>Sargassum</i> diversity and distribution have manifested in proliferation of a previously rare morphotype, <i>Sargassum natans VIII</i>, to rival biomass levels of historically dominant <i>S</i>. <i>natans I</i> and <i>S</i>. <i>fluitans III</i>. Precise genetic identification of these morphotypes can improve accuracy and interpretation of ecological studies as well as clarify evolutionary history and population connectivity. For 139 field samples collected from the subtropical and tropical North Atlantic, three mitochondrial genes (cox3, nad6, and mt16S rRNA) were used to examine genetic divergence among the three common pelagic <i>Sargassum</i> morphotypes. These gene sequences successfully differentiated among morphotypes regardless of geographic origin, confirming <i>in situ</i> morphology-based identifications. <i>Sargassum natans I</i> and <i>S</i>. <i>natans VIII</i> exhibited divergence consistent with that between the <i>S</i>. <i>natans</i>-complex and <i>S</i>. <i>fluitans III</i>. Phylogenetic analysis of these samples also indicated evolutionary divergence between <i>Sargassum</i> morphologies. The genetic divergence among morphotypes, compared with benthic <i>Sargassum</i> species, suggested that taxonomic reclassification of the three most common pelagic morphotypes may be warranted.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"43 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12691","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42121503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inter-sexual comparison of body biomass, proximate biochemical composition, and fatty acid profiles of new juvenile squat lobsters (Pleuroncodes monodon) in the Southeast Pacific Ocean","authors":"Fabián Guzmán-Rivas,&nbsp;Marco Quispe-Machaca,&nbsp;Luis Olavarría,&nbsp;Maximiliano Zilleruelo,&nbsp;Ángel Urzúa","doi":"10.1111/maec.12690","DOIUrl":"10.1111/maec.12690","url":null,"abstract":"<p>In the wide distribution range of the red squat lobster <i>Pleuroncodes monodon</i> in the Southeast Pacific Ocean, there is an important nursery area on the southern coast of Chile. The new juvenile individuals from this nursery area are directly recruited into the adult squat lobster population, which is exploited by industrial fisheries. Despite the importance of new <i>P</i>. <i>monodon</i> juveniles for recruitment estimations in fishery management models, their bioenergetic condition and/or nutritional status at the onset of their benthic phase remain unknown, as are the differences in the biochemical composition and energy reserves of the two sexes, which could help explain the cost of the first breeding event in females. Therefore, in new juvenile squat lobsters with the same degree of immaturity, we quantified and compared between the sexes (female vs. male): the size (cephalothorax length, CL), body biomass (dry weight and organic matter), biochemical composition (proteins, glucose, and lipids), and fatty acid profiles (FAs). The results indicate that the CL of new juveniles was similar between the sexes, while the dry weight and organic matter presented significant differences, with higher values in new juvenile females (NJF) than new juvenile males (NJM). Similarly, the NJF had a higher content of proteins, glucose, and lipids than NJM. The FAs also showed significant differences between the sexes; the NJF had a higher content than NJM in all fatty acid classes (i.e., saturated, monounsaturated, and polyunsaturated), with the FAs DHA (C22:6n-3), EPA (C20:5n-3), oleic (C18:1n-9), palmitic (C16:0), and eicosatrienoic (C20:3n-3) significantly contributing to the differentiation of FA profiles between the sexes. All of the aforementioned differences among the multiple variables of the bioenergetic condition can indicate biochemical adaptations in the storage capacity of energy reserves, particularly among NJF that must support the high energy cost of the first reproductive event (characterized by embryo production and incubation), which occurs during the austral winter, a period predominated by cold-water temperatures and scarce food availability in the habitat. Overall, our findings have significant implications in fishery management models. In this case, defining the bioenergetic condition of the new juvenile squat lobsters can aid in predicting the density and stability of the adult population, which is exploited by commercial fisheries.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"43 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12690","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41910088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiannual trends of toxic and potentially toxic microalgae (Ostreopsis cf. ovata, Prorocentrum lima, and Coolia monotis) in Sfax coasts (North of Gabes Gulf, Tunisia)","authors":"Moncer Malika,&nbsp;Ben Brahim Mounir,&nbsp;Mahfoudhi Mabrouka,&nbsp;Dammak Walha Lamia,&nbsp;Bel Hassen Malika,&nbsp;Hamza Asma","doi":"10.1111/maec.12682","DOIUrl":"10.1111/maec.12682","url":null,"abstract":"<p>During the last decades, microalgae communities have presented significant changes in their structure and taxa composition along the Mediterranean littoral shallow waters. Despite numerous studies conducted to characterize these changes at various levels, it has always been very difficult to disentangle the effects of physicochemical factors from the meteorological ones. The main purpose of this work was to evaluate possible changes, over a 17-year scale (1997–2013), in diversity and abundance of three toxic and potentially toxic microalgae related to changes in environmental parameters on Sfax coasts, a pole of shellfish production in Tunisia. In this 17-year span, a chronological series of data showed that a clear disparity from one year to another was observed in the abundance of studied species. The distribution of these species has been subjected to a seasonal cycle. The studied microalgae, especially <i>Prorocentrum lima</i>, seem to have significant relationships with many physicochemical and meteorological parameters.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"42 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46708160","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}

{"title":"Ecological studies of colonized invertebrate communities on cultivated seaweeds in a typical mariculture zone, China","authors":"Qing Wang,&nbsp;Hui Ren,&nbsp;Yufeng Yang","doi":"10.1111/maec.12681","DOIUrl":"10.1111/maec.12681","url":null,"abstract":"<p>The invertebrate communities on floating cultivated seaweeds were studied by both field surveys and experiments in order to analyze community structure in a typical mariculture zone, Nanao, South China. Samples of invertebrates were collected from the water and the thalli of the seaweeds, <i>Gracilaria lemaneiformis</i> and <i>G. chouae</i>. The results showed that both species were rapidly colonized by invertebrates after being introduced into the mariculture region. The communities on the seaweeds were significantly different from those in the ambient waters. Invertebrate abundance was much higher in the seaweed than in the water. The high proportion of larvae indicates that these species are using the seaweed thalli as a platform for reproduction. Therefore, large-scale seaweed cultivation is beneficial for colonization of invertebrates and shelters higher numbers of copepod larvae than in the sea. This drives ecological changes in the invertebrate communities in coastal ecosystems and facilitates interactions with other communities and higher trophic levels in the cultivated seaweed food web. We propose a conceptual model that summarizes the results from this study and guides future studies on the relationships between seaweed and the invertebrate community.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"42 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44959390","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}

{"title":"Bioerosion and its relationship with skeletal density of Platygyra daedalea and Porites harrisoni in Larak Island, Persian Gulf","authors":"Hamed Mashhadi,&nbsp;Jafar Seyfabadi,&nbsp;Hamid Rezai Marnani,&nbsp;Mehdi Ghodrati Shojaei","doi":"10.1111/maec.12686","DOIUrl":"10.1111/maec.12686","url":null,"abstract":"<p>Due to the extreme environmental conditions in the Persian Gulf, the bioerosion rate in the coral reefs of the region deem to be higher than the other regions, which may disturb the balance between the processes of the reef growth and destruction. The bioerosion rate in <i>Platygyra daedalea</i> and <i>Porites harrisoni</i> in three stations of Larak Island (Hormuz Strait, 56°39′35.7″ E &amp; 26°88′65.17″ N) was assessed in 2017. This study also examined the effect of skeletal density on the severity of bioerosion rate. For this purpose, five coral pieces of each species were collected from the stations. Each piece was cut in the direction of the longest central axis with a thickness of about 7 mm, and their photographs were taken. The bioeroded area was evaluated by ImageJ 1.44 software, and the freezing method was used to measure the skeletal density. A total of four groups of macrobioeroders were found in both coral species, including bivalves, polychaetes, sponges, and barnacles. Also, increased skeletal density was positively correlated with bioerosion in <i>P</i>. <i>daedalea</i>, but not in <i>P</i>. <i>harrisoni</i>. This indicates that some bioeroders prefer denser corals for various reasons. Evidence from this research suggests that skeletal density was the most important factor affecting the degree of bioerosion rate. However, other environmental factors such as depth may also affect the bioerosion rate to certain degrees.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"42 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43316398","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}

{"title":"Advances in the study of the trophic niche of batoids with distribution in Mexican waters","authors":"Francisco Serrano-Flores,&nbsp;Yassir E. Torres-Rojas,&nbsp;Matthew J. Ajemian,&nbsp;Manuel Mendoza-Carranza,&nbsp;Juan C. Pérez-Jiménez","doi":"10.1111/maec.12687","DOIUrl":"10.1111/maec.12687","url":null,"abstract":"<p>Batoid (rays and skates) populations are declining worldwide, with unknown ecological consequences due to lacking consolidated data on the trophic ecology of these species. Such trends are particularly disconcerting in Mexican waters, where batoids are heavily exploited by commercial fisheries. To assess the current state of knowledge of batoid diet in this region, we conducted a meta-analysis of 54 published stomach content analysis studies. Trophic niche was assessed from 44 total species, including variations due to sex, ontogeny, season, and region, as well as trophic overlap among species. The species assessed belonged to the taxonomic families Urotrygonidae, Dasyatidae, Potamotrygonidae, Mobulidae, Rhinopteridae, Aetobatidae, Gymnuridae, Rhinobatidae, Rajidae, Arhyncobatidae, and Narcinidae. Most of the diet studies to date were conducted in the Mexican Pacific (<i>n</i> = 24), whereas only three studies have come from the Mexican Atlantic, with 27 additional studies coming from other American countries from the tropical and subtropical region. Crustaceans were reported in more than 50% of the species assessed and were also generally the most important prey item, with either high (76%–100%) and medium-high (51%–75%) importance based on dietary indices from the literature reviewed. While the diet of 40 species (91%) consisted of more than one prey type, feeding strategy analysis (Levin and Shannon–Wiener indices) of 27 species indicated that 25 were specialists and two generalists. Species diets varied with ontogeny (20%), sex (11%), region (11%), and seasonality (9%). According to the reviewed studies, interspecific diet overlap was evident in 36% of species, mainly in the family Urotrygonidae. Batoids were grouped into four trophic guilds: crustacivores (68.1%), annelidivores (primarily polychaetes) (13.6%), molluscivores (11.3%), and piscivores (6.8%), based on the literature reviewed. This study showed that most of the batoids had a specialist crustacean-based diet. Future research should focus on species devoid of dietary data to encapsulate the trophic niche breadth of this group in Mexican waters, particularly from the Mexican Atlantic and surrounding regions.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"42 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46608268","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}

{"title":"Environmental influences on the cyanobacterial mat formation in the mangrove ecosystems along the southwest coast of India","authors":"Niya Benny,&nbsp;Lathika Cicily Thomas,&nbsp;Kunnatholickal Balakrishnan Padmakumar","doi":"10.1111/maec.12685","DOIUrl":"10.1111/maec.12685","url":null,"abstract":"<p>Mangrove forests are highly diverse niches playing fundamental roles in ecosystem sustainability, particularly in the tropics. Benthic realms in mangrove forest sustain a wide variety of autotrophs among which cyanobacteria forms a major component. The present study discusses the spatiotemporal variabilities in benthic cyanobacterial assemblage in selected mangrove ecosystems (Kannur—S1, Kochi—S2 and Kollam—S3 were sampled for 1 year, 2018 to 2019) along the south-west coast of India. A total of nine cyanobacterial species belonging to six genera were identified, which included mainly non-heterocystous forms like <i>Oscillatoria irrigua</i>, <i>Phormidium chalybeum</i>, <i>Geitlerinema bigranulatum</i>, <i>Oscillatoria sancta</i>, <i>Spirulina major</i>, <i>Trichodesmium</i> sp., whereas heterocystous cyanobacteria included <i>Nostoc</i> sp. <i>Oscillatoria irrigua</i> was the major species distributed in all the mangrove ecosystems. Temporal variations were observed in the distribution with pre-monsoon (PRM) and monsoon (MON) seasons having higher numerical density and lesser diversity of benthic cyanophytes with lesser abundance and comparatively higher diversity during post-monsoon (POM). Regionally, S2 observed higher numerical abundance with higher dominance, whereas S3 observed less abundance with high diversity. Physico-chemical parameters of sediment and pore water analysis observed that sediment temperature positively correlated with cyanobacterial abundance, whereas a negative correlation was observed with dissolved oxygen and pore water dissolved nitrate. Pore water salinity also influenced the community composition of cyanobacteria with heterocystous cyanobacteria in comparatively less saline conditions. Hence, the study emphasis spatiotemporal variabilities in the benthic cyanobacterial assemblage of mangrove ecosystems in relation to environmental variables.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"42 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48386342","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}

{"title":"Phytoplankton ecology in different coastal habitats along the northern Bay of Bengal","authors":"Subrata Sarker,&nbsp;Tania Sultana,&nbsp;Nazrul Islam,&nbsp;Md Sanwar Hossain,&nbsp;ANM Samiul Huda,&nbsp;KM Zulkarnain,&nbsp;SM Sharifuzzaman","doi":"10.1111/maec.12679","DOIUrl":"10.1111/maec.12679","url":null,"abstract":"<p>Knowledge on phytoplankton dynamics is important to understand the trophodynamics of aquatic ecosystems. But, the topic remains poorly studied in the context of tropical coastal habitats. The present study describes the community structure and drivers of phytoplankton in different coastal habitats along the northern Bay of Bengal. Data were collected on phytoplankton, zooplankton and a range of environmental variables from the estuarine, mangroves and coral habitats of Bangladesh during dry season from October 2020 to March 2021. Our study found that eco-hydrological characteristics of the estuarine, mangroves and coral habitats differ from each other, although phytoplankton assemblages in these habitats commonly dominated by diatoms. In the estuary, the main diatom taxa included <i>Coscinodiscus</i>, whereas <i>Ceratium</i> and <i>Chaetoceros</i> were dominant in the coral habitat, and <i>Coscinodiscus</i> and <i>Chaetoceros</i> in the mangroves habitat. The concentration of micronutrients (silicate, nitrate and phosphate) was the most important driver of phytoplankton among all habitats. Zooplankton had a vital role in regulating the phytoplankton community composition in the coral habitat. These results suggest that the phytoplankton dynamics across tropical coastal habitats is largely driven by nutrients, which, when compared, have less influence on the growth of phytoplankton in temperate region.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"42 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47411189","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}

{"title":"Sea turtle research and conservation. Lessons from working in the field. Nahill, B., (Ed.) Oxford: Elsevier (Academic Press), 2021. 224 pp. Paperback: US$97.75. ISBN 9780128210307; Ebook: US$97.75. ISBN: 9780128210291","authors":"Michael Stachowitsch","doi":"10.1111/maec.12684","DOIUrl":"10.1111/maec.12684","url":null,"abstract":"","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"43 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44356446","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}